/* ========================================
   Design System
   ======================================== */
:root,
[data-theme="dark"] {
  --color-bg: #070b10;
  --color-bg-alt: #0c1219;
  --color-surface: rgba(18, 26, 36, 0.88);
  --color-surface-solid: #121a24;
  --color-surface-hover: #1a2433;
  --color-border: rgba(148, 163, 184, 0.12);
  --color-text: #e8eef5;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  --color-accent: #14b8a6;
  --color-accent-light: #2dd4bf;
  --color-accent-warm: #fbbf24;
  --color-accent-glow: rgba(20, 184, 166, 0.18);
  --color-accent-border: rgba(20, 184, 166, 0.35);
  --color-accent-border-subtle: rgba(20, 184, 166, 0.22);
  --color-white: #ffffff;
  --color-on-accent: #070b10;
  --color-header-bg: rgba(7, 11, 16, 0.82);
  --color-overlay: rgba(0, 0, 0, 0.65);
  --color-hero-glow: rgba(20, 184, 166, 0.08);
  --color-mesh-1: rgba(20, 184, 166, 0.12);
  --color-mesh-2: rgba(6, 182, 212, 0.08);
  --color-mesh-3: rgba(251, 191, 36, 0.05);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
}

[data-theme="light"] {
  --color-bg: #f4f7fb;
  --color-bg-alt: #e9eef5;
  --color-surface: rgba(255, 255, 255, 0.82);
  --color-surface-solid: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: rgba(15, 23, 42, 0.1);
  --color-text: #1e293b;
  --color-text-muted: #475569;
  --color-text-dim: #64748b;
  --color-accent: #0d9488;
  --color-accent-light: #0f766e;
  --color-accent-warm: #d97706;
  --color-accent-glow: rgba(13, 148, 136, 0.14);
  --color-accent-border: rgba(13, 148, 136, 0.38);
  --color-accent-border-subtle: rgba(13, 148, 136, 0.28);
  --color-white: #0f172a;
  --color-on-accent: #ffffff;
  --color-header-bg: rgba(244, 247, 251, 0.88);
  --color-overlay: rgba(15, 23, 42, 0.45);
  --color-hero-glow: rgba(13, 148, 136, 0.1);
  --color-mesh-1: rgba(13, 148, 136, 0.1);
  --color-mesh-2: rgba(6, 182, 212, 0.07);
  --color-mesh-3: rgba(217, 119, 6, 0.06);

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
}

:root {
  --shadow-glow: 0 0 48px var(--color-accent-glow);

  --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.75rem;
  --font-size-5xl: 3.5rem;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --header-height: 72px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1100px;
}

/* ========================================
   Reset & Base
   ======================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
  position: relative;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black, transparent 70%);
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 40% at 15% 20%, var(--color-mesh-1), transparent 55%),
    radial-gradient(ellipse 45% 35% at 85% 10%, var(--color-mesh-2), transparent 50%),
    radial-gradient(ellipse 40% 30% at 70% 85%, var(--color-mesh-3), transparent 55%);
  pointer-events: none;
  z-index: -2;
}

::selection {
  background: var(--color-accent-glow);
  color: var(--color-white);
}

main {
  counter-reset: section;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

ul {
  list-style: none;
}

strong {
  color: var(--color-white);
  font-weight: 600;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-md);
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.nav__logo:hover {
  color: var(--color-white);
}

.nav__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #06b6d4 100%);
  color: var(--color-on-accent);
  font-size: var(--font-size-sm);
  font-weight: 700;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 14px var(--color-accent-glow);
}

.nav__logo-text {
  display: none;
}

.nav__end {
  display: contents;
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  z-index: 1001;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.theme-toggle:hover {
  color: var(--color-accent-light);
  border-color: var(--color-accent-border);
}

.theme-toggle__icon--moon {
  display: none;
}

[data-theme="light"] .theme-toggle__icon--sun {
  display: none;
}

[data-theme="light"] .theme-toggle__icon--moon {
  display: block;
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 1001;
}

.nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(300px, 85vw);
  height: 100vh;
  background: var(--color-bg-alt);
  border-left: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: calc(var(--header-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
  gap: var(--space-sm);
  transition: right var(--transition);
  z-index: 999;
}

.nav__menu--open {
  right: 0;
}

.nav__link {
  display: block;
  padding: var(--space-sm) var(--space-md);
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-white);
  background: var(--color-surface);
}

.nav__link--active {
  color: var(--color-accent-light);
}

.nav__link--cta {
  color: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-full);
  text-align: center;
  margin-top: var(--space-md);
}

.nav__link--cta:hover {
  background: var(--color-accent);
  color: var(--color-on-accent);
}

.nav__overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.nav__overlay--visible {
  opacity: 1;
  visibility: visible;
}

/* ========================================
   Hero
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--space-3xl)) 0 var(--space-3xl);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 55% at 20% 0%, var(--color-mesh-1), transparent 60%),
    radial-gradient(ellipse 50% 45% at 90% 30%, var(--color-mesh-2), transparent 55%),
    radial-gradient(ellipse 40% 35% at 60% 100%, var(--color-mesh-3), transparent 50%);
  pointer-events: none;
  overflow: hidden;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: float-orb 18s ease-in-out infinite;
}

.hero__orb--1 {
  width: 320px;
  height: 320px;
  top: 8%;
  left: -5%;
  background: var(--color-accent);
}

.hero__orb--2 {
  width: 260px;
  height: 260px;
  top: 35%;
  right: -8%;
  background: #06b6d4;
  animation-delay: -6s;
}

.hero__orb--3 {
  width: 180px;
  height: 180px;
  bottom: 10%;
  left: 35%;
  background: var(--color-accent-warm);
  animation-delay: -12s;
  opacity: 0.35;
}

@keyframes float-orb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(24px, -18px) scale(1.05); }
  66% { transform: translate(-16px, 12px) scale(0.95); }
}

.hero__layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-2xl);
  align-items: center;
}

.hero__content {
  position: relative;
}

.hero__visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.hero__avatar-wrap {
  position: relative;
  width: min(280px, 70vw);
  aspect-ratio: 1;
  padding: 4px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-light), #06b6d4 45%, var(--color-accent-warm));
  box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.hero__avatar {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--color-bg);
  box-shadow: none;
}

.hero__card {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
  min-width: 240px;
}

.hero__card-label {
  display: block;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
  margin-bottom: var(--space-xs);
}

.hero__card strong {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-white);
  margin-bottom: 2px;
}

.hero__card-role {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.hero__greeting {
  font-size: var(--font-size-sm);
  color: var(--color-accent-light);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.hero__name {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, var(--font-size-5xl));
  font-weight: 400;
  line-height: 1.08;
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-white) 20%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="light"] .hero__name {
  background: linear-gradient(135deg, #0f172a 20%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__title {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: var(--space-lg);
  min-height: 1.5em;
}

.hero__cursor {
  color: var(--color-accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-dim);
  max-width: 560px;
  margin-bottom: var(--space-2xl);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.hero__social {
  display: flex;
  gap: var(--space-lg);
}

.hero__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  color: var(--color-text-dim);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: color var(--transition), transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.hero__social a:hover {
  color: var(--color-accent-light);
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #0891b2 100%);
  color: var(--color-on-accent);
  border-color: transparent;
  box-shadow: 0 4px 16px var(--color-accent-glow);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-accent-light) 0%, #06b6d4 100%);
  color: var(--color-on-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn--outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  border-color: transparent;
  gap: var(--space-sm);
}

.btn--ghost:hover {
  color: var(--color-accent-light);
  background: var(--color-accent-glow);
}

.btn--sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn--full {
  width: 100%;
}

.hero__actions .btn--ghost {
  display: inline-flex;
  align-items: center;
}

/* ========================================
   Sections — subtitles
   ======================================== */

.section__subtitle {
  color: var(--color-text-dim);
  font-size: var(--font-size-lg);
  max-width: 560px;
  margin-top: calc(-1 * var(--space-2xl));
  margin-bottom: var(--space-3xl);
}

/* ========================================
   Sections
   ======================================== */
.section {
  padding: var(--space-4xl) 0;
  counter-increment: section;
  position: relative;
}

.section--alt {
  background:
    linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.section--alt::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, 90%);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-accent-border), transparent);
  pointer-events: none;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, var(--font-size-4xl));
  font-weight: 400;
  color: var(--color-white);
  margin-bottom: var(--space-3xl);
  letter-spacing: -0.02em;
  position: relative;
  display: inline-block;
}

.section__title::before {
  content: '0' counter(section);
  display: block;
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent-light);
  margin-bottom: var(--space-sm);
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 72px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), #06b6d4);
  border-radius: 2px;
}

/* ========================================
   Scroll Reveal
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   About
   ======================================== */
.about__grid {
  display: grid;
  gap: var(--space-2xl);
}

.about__text p {
  margin-bottom: var(--space-md);
  color: var(--color-text-muted);
}

.about__text p:last-child {
  margin-bottom: 0;
}

.about__highlights {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.about__stat {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.about__stat:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.about__stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: var(--font-size-4xl);
  font-weight: 400;
  background: linear-gradient(135deg, var(--color-accent-light), #06b6d4);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

[data-theme="light"] .about__stat-number {
  background: linear-gradient(135deg, var(--color-accent), #0891b2);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about__stat-label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
  margin-top: var(--space-xs);
}

/* ========================================
   Skills
   ======================================== */
.skills-core {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-xl);
  margin-bottom: var(--space-xl);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-glow);
}

.skills-core__label {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
}

.skills-core__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skills-core__list li {
  padding: 0.45rem 1rem;
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
}

.skills__grid {
  display: grid;
  gap: var(--space-lg);
}

.skill-card {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.skill-card--backend {
  border-top: 3px solid rgba(239, 68, 68, 0.55);
}

.skill-card--frontend {
  border-top: 3px solid rgba(96, 165, 250, 0.55);
}

.skill-card--infra {
  border-top: 3px solid rgba(251, 191, 36, 0.55);
}

.skill-card--product {
  border-top: 3px solid var(--color-accent-border);
}

.skill-card:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.skill-card__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.skill-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
  margin-bottom: var(--space-md);
  line-height: 1.5;
}

.skill-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.skill-tag {
  padding: 0.3rem 0.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.skill-tag--primary {
  background: var(--color-accent-glow);
  border-color: var(--color-accent-border-subtle);
  color: var(--color-text);
  font-weight: 500;
}

.skill-card:hover .skill-tag {
  border-color: var(--color-accent-border-subtle);
}

.skills__footnote {
  margin-top: var(--space-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
  text-align: center;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ========================================
   Timeline (Experience)
   ======================================== */
.timeline {
  position: relative;
  padding-left: var(--space-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-2xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__marker {
  position: absolute;
  left: calc(-1 * var(--space-xl) + 2px);
  top: 8px;
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--color-accent-glow);
}

.timeline__item--current .timeline__marker {
  box-shadow: 0 0 0 4px var(--color-accent-glow), 0 0 12px var(--color-accent);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}

.timeline__content {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.timeline__content:hover {
  border-color: var(--color-accent-border);
  box-shadow: var(--shadow-sm);
}

.timeline__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.timeline__role {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-white);
}

.timeline__company {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
}

.timeline__company a {
  color: var(--color-text-muted);
}

.timeline__company a:hover {
  color: var(--color-accent-light);
}

.timeline__date {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--color-accent-light);
  font-weight: 500;
  white-space: nowrap;
}

.timeline__bullets {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.timeline__bullets li {
  position: relative;
  padding-left: var(--space-lg);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.timeline__bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0.6;
}

/* ========================================
   Projects
   ======================================== */
.projects__grid {
  display: grid;
  gap: var(--space-lg);
}

.project-card {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card--featured {
  border-color: var(--color-accent-border);
}

.project-card__visual {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--color-bg);
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
}

.project-card__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.4s ease;
}

.project-card__visual--mobile {
  background: #eef2f7;
}

.project-card__visual--mobile img {
  object-fit: contain;
  object-position: center top;
  padding: var(--space-md) var(--space-xl) 0;
}

[data-theme="dark"] .project-card__visual--mobile {
  background: #0f1620;
}

.project-card:hover .project-card__visual img {
  transform: scale(1.02);
}

.project-card__live {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 0.2rem 0.6rem;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: #22c55e;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.project-card__top {
  padding: var(--space-sm) var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.project-card__top--laravel {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.12), rgba(249, 115, 22, 0.06));
}

.project-card__top--nextjs {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.15), rgba(100, 116, 139, 0.08));
}

.project-card__top--flutter {
  background: linear-gradient(135deg, rgba(2, 86, 155, 0.12), rgba(19, 185, 253, 0.06));
}

.project-card__body {
  padding: var(--space-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card__category {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-dim);
  margin-bottom: var(--space-xs);
}

.project-card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0;
}

.project-card:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.project-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.project-card__badge {
  flex-shrink: 0;
  padding: 0.2rem 0.6rem;
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent-light);
}

.project-card__highlight {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent-light);
  margin-bottom: var(--space-sm);
}

.project-card__icon {
  color: var(--color-accent-light);
}

.project-card__link {
  color: var(--color-text-dim);
  transition: color var(--transition);
}

.project-card__link:hover {
  color: var(--color-accent-light);
}

.project-card__desc {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  flex: 1;
}

.project-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: auto;
  padding-top: var(--space-md);
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.project-card__tags li {
  padding: 0.25rem 0.65rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  color: var(--color-accent-light);
  font-weight: 500;
}

.projects__more {
  text-align: center;
  margin-top: var(--space-2xl);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  transition: gap var(--transition);
}

.link-arrow:hover {
  gap: var(--space-md);
  color: var(--color-accent);
}

.link-arrow:hover {
  gap: var(--space-md);
  color: var(--color-accent);
}

/* ========================================
   Production Work
   ======================================== */
.work-group {
  margin-bottom: var(--space-3xl);
}

.work-group:last-child {
  margin-bottom: 0;
}

.work-group__header {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.work-group__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  color: var(--color-white);
}

.work-group__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
}

.work-group__platform {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  white-space: nowrap;
}

.work__grid {
  display: grid;
  gap: var(--space-lg);
}

.case-study {
  margin-top: var(--space-xl);
  padding: var(--space-xl);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: calc(var(--header-height) + var(--space-lg));
}

.case-study__header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.case-study__label {
  display: inline-block;
  margin-bottom: var(--space-sm);
  padding: 0.25rem 0.65rem;
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-light);
}

.case-study__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  color: var(--color-white);
  line-height: 1.25;
  margin-bottom: var(--space-sm);
}

.case-study__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
}

.case-study__meta a {
  color: var(--color-accent-light);
  font-weight: 500;
}

.case-study__grid {
  display: grid;
  gap: var(--space-lg);
}

.case-study__block-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-light);
  margin-bottom: var(--space-sm);
}

.case-study__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-md);
}

.case-study__text:last-child {
  margin-bottom: 0;
}

.case-study__block--outcome {
  padding: var(--space-lg);
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-md);
}

.case-study__block--outcome .case-study__text {
  color: var(--color-text);
}

.case-study__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.case-study__tags li {
  padding: 0.25rem 0.65rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.work-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  color: inherit;
  text-decoration: none;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.work-card:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  color: inherit;
}

.work-card__visual {
  position: relative;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.work-card__visual--image {
  height: auto;
  aspect-ratio: 16 / 9;
  background: var(--color-bg);
}

.work-card__visual--image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  display: block;
}

.work-card__visual--warm {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(249, 115, 22, 0.1));
}

.work-card__visual--blue {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(37, 99, 235, 0.1));
}

.work-card__visual--purple {
  background: linear-gradient(135deg, rgba(139, 92, 246, 0.2), rgba(124, 58, 237, 0.1));
}

.work-card__visual--teal {
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.25), rgba(13, 148, 136, 0.1));
}

.work-card__initial {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-white);
  opacity: 0.9;
}

.work-card__live {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  padding: 0.2rem 0.6rem;
  background: rgba(34, 197, 94, 0.15);
  border: 1px solid rgba(34, 197, 94, 0.4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: #22c55e;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.work-card__body {
  padding: var(--space-xl);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.work-card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

.work-card__domain {
  font-size: var(--font-size-sm);
  color: var(--color-accent-light);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.work-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: var(--space-md);
}

.work-card__cta {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
}

.work-card:hover .work-card__cta {
  color: var(--color-accent);
}

/* ========================================
   Testimonials
   ======================================== */
.testimonials__grid {
  display: grid;
  gap: var(--space-lg);
}

.testimonial {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin: 0;
  position: relative;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.testimonial:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.testimonial::before {
  content: '\201C';
  position: absolute;
  top: var(--space-sm);
  left: var(--space-md);
  font-size: 4.5rem;
  line-height: 1;
  font-family: var(--font-display);
  color: var(--color-accent);
  opacity: 0.22;
}

.testimonial__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-lg);
  padding-top: var(--space-md);
  font-style: italic;
}

.testimonial__author strong {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-white);
  font-style: normal;
  margin-bottom: 2px;
}

.testimonial__author span {
  font-size: var(--font-size-xs);
  color: var(--color-text-dim);
}

.testimonials__more {
  text-align: center;
  margin-top: var(--space-2xl);
}

@media (min-width: 640px) {
  .work__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .work-group__header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

@media (min-width: 1024px) {
  .testimonials__grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .case-study__grid {
    grid-template-columns: repeat(3, 1fr);
    align-items: start;
  }
}

/* ========================================
   Certifications & Education
   ======================================== */
.certs__summary {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.certs__summary-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-lg);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
}

.certs__summary-number {
  font-family: var(--font-display);
  font-size: var(--font-size-3xl);
  font-weight: 400;
  color: var(--color-accent-light);
  line-height: 1;
}

.certs__summary-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-dim);
}

.certs__layout {
  display: grid;
  gap: var(--space-2xl);
  align-items: start;
}

.certs__main {
  display: grid;
  gap: var(--space-xl);
}

.cert-group__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.cert-group__brand {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: 800;
  letter-spacing: 0.04em;
}

.cert-group__brand--aws {
  background: rgba(255, 153, 0, 0.15);
  border: 1px solid rgba(255, 153, 0, 0.35);
  color: #ff9900;
}

.cert-group__brand--hr {
  background: rgba(0, 200, 83, 0.12);
  border: 1px solid rgba(0, 200, 83, 0.3);
  color: #00c853;
}

.cert-group__brand--td {
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60a5fa;
}

.cert-group__title {
  font-family: var(--font-display);
  font-size: var(--font-size-xl);
  font-weight: 400;
  color: var(--color-white);
  margin-bottom: 2px;
}

.cert-group__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
}

.certs__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.cert-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
  color: inherit;
  text-decoration: none;
}

.cert-item:hover {
  border-color: var(--color-accent-border);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  color: inherit;
}

.cert-item__body {
  flex: 1;
  min-width: 0;
}

.cert-item__link {
  flex-shrink: 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  white-space: nowrap;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition), transform var(--transition);
}

.cert-item:hover .cert-item__link {
  opacity: 1;
  transform: translateX(0);
}

.cert-item__rank {
  flex-shrink: 0;
  padding: 0.2rem 0.55rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.cert-item__rank--top {
  background: rgba(251, 191, 36, 0.12);
  border-color: rgba(251, 191, 36, 0.35);
  color: var(--color-accent-warm);
}

.cert-item__badge {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  font-size: var(--font-size-xs);
  font-weight: 800;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.cert-item__badge--aws {
  background: rgba(255, 153, 0, 0.15);
  color: #ff9900;
}

.cert-item__badge--hr {
  background: rgba(0, 200, 83, 0.12);
  color: #00c853;
}

.cert-item__badge--td {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
}

.cert-item strong {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-white);
}

.cert-item__issuer {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-dim);
  margin-top: 2px;
}

.certs__aside {
  display: grid;
  gap: var(--space-lg);
  min-width: 0;
}

.education-panel {
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  background:
    linear-gradient(135deg, var(--color-accent-glow), transparent 55%),
    var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  min-width: 0;
}

.education-panel__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.education-panel__lead {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.education-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: border-color var(--transition);
}

.education-card:hover {
  border-color: var(--color-accent-border-subtle);
}

.education-card__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-accent-glow);
  color: var(--color-accent-light);
  border-radius: var(--radius-md);
}

.education-card__body {
  flex: 1;
  min-width: 0;
}

.education-card strong {
  display: block;
  font-size: var(--font-size-base);
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: var(--space-xs);
  color: var(--color-white);
}

.education-card__school {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.education-card__location {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
}

.certs__note {
  padding: var(--space-md) var(--space-lg);
  border-left: 3px solid var(--color-accent-border);
  background: var(--color-accent-glow);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.certs__note p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin: 0;
}

@media (max-width: 767px) {
  .cert-item__link {
    opacity: 1;
    transform: none;
  }
}

/* ========================================
   Contact
   ======================================== */
.contact__layout {
  display: grid;
  gap: var(--space-xl);
  align-items: start;
}

.contact-panel {
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.contact-panel--info {
  border-color: var(--color-accent-border-subtle);
  background:
    linear-gradient(135deg, var(--color-accent-glow), transparent 55%),
    var(--color-surface);
}

.contact-panel__header {
  margin-bottom: var(--space-xl);
}

.contact-panel__title {
  font-family: var(--font-display);
  font-size: var(--font-size-2xl);
  font-weight: 400;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
}

.contact-panel__lead {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  line-height: 1.65;
  max-width: 36rem;
}

.contact-form {
  padding: 0;
  background: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
}

.form-row {
  display: grid;
  gap: var(--space-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-row .form-group {
  margin-bottom: 0;
}

.form-row + .form-group {
  margin-top: var(--space-md);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-dim);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-error {
  margin-top: var(--space-xs);
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: #ef4444;
  line-height: 1.4;
  min-height: 0;
}

.form-error:empty {
  display: none;
}

.form-group input.input--invalid,
.form-group textarea.input--invalid {
  border-color: #ef4444;
}

.form-group input.input--invalid:focus,
.form-group textarea.input--invalid:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-honeypot {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  overflow: hidden;
}

.form-status {
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  min-height: 1.25em;
}

.form-status--success {
  color: #22c55e;
}

.form-status--error {
  color: #ef4444;
}

.contact__aside {
  display: grid;
  gap: var(--space-lg);
}

.contact__availability {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin: var(--space-lg) 0;
}

.contact__availability li {
  padding: 0.35rem 0.85rem;
  background: var(--color-bg);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-accent-light);
  letter-spacing: 0.02em;
}

.contact__quick {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.contact__channels {
  display: grid;
  gap: var(--space-sm);
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.contact-channel:hover {
  border-color: var(--color-accent-border);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  color: inherit;
}

.contact-channel--static {
  cursor: default;
}

.contact-channel--static:hover {
  transform: none;
  box-shadow: none;
}

.contact-channel__icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-accent-glow);
  border: 1px solid var(--color-accent-border-subtle);
  border-radius: var(--radius-sm);
  color: var(--color-accent-light);
}

.contact-channel__body {
  flex: 1;
  min-width: 0;
}

.contact-channel__label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-dim);
  margin-bottom: 2px;
}

.contact-channel__value {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-white);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-channel__arrow {
  flex-shrink: 0;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition), transform var(--transition);
}

.contact-channel:hover .contact-channel__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ========================================
   Footer
   ======================================== */
.footer {
  border-top: 1px solid var(--color-border);
  background: linear-gradient(180deg, transparent, var(--color-bg-alt));
  padding: var(--space-2xl) 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  text-align: center;
}

.footer__copy {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
}

.footer__links {
  display: flex;
  gap: var(--space-lg);
}

.footer__links a {
  color: var(--color-text-dim);
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.footer__links a:hover {
  color: var(--color-accent-light);
}

/* ========================================
   Back to Top
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), #0891b2);
  color: var(--color-on-accent);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: background var(--transition), transform var(--transition), opacity var(--transition);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
}

.back-to-top--visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--color-accent-light);
  transform: translateY(-2px);
}

/* ========================================
   Responsive — Tablet
   ======================================== */
@media (min-width: 640px) {
  .about__highlights {
    grid-template-columns: repeat(4, 1fr);
  }

  .skills-core {
    flex-direction: row;
    align-items: center;
    gap: var(--space-xl);
  }

  .skills-core__label {
    flex-shrink: 0;
  }

  .skills__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .projects__grid {
    grid-template-columns: 1fr;
  }

  .timeline__header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }

  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }

  .certs__summary {
    grid-template-columns: repeat(4, 1fr);
  }
}

.skill-card,
.timeline__content,
.project-card,
.cert-item,
.education-card,
.case-study,
.contact-panel,
.contact-channel,
.about__stat {
  transition: background-color var(--transition), border-color var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.section--alt {
  transition: background-color var(--transition);
}

.header,
.footer {
  transition: background-color var(--transition), border-color var(--transition);
}

/* ========================================
   Responsive — Desktop
   ======================================== */
@media (min-width: 768px) {
  .nav__end {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
  }

  .nav__logo-text {
    display: inline;
  }

  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    width: auto;
    height: auto;
    background: none;
    border: none;
    flex-direction: row;
    align-items: center;
    padding: 0;
    gap: var(--space-xs);
  }

  .nav__link {
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
  }

  .nav__link--cta {
    margin-top: 0;
    margin-left: var(--space-sm);
  }

  .nav__link--active {
    box-shadow: inset 0 -2px 0 var(--color-accent);
  }

  .hero__layout {
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-3xl);
  }

  .hero__visual {
    align-items: flex-end;
  }

  .hero__name {
    font-size: var(--font-size-5xl);
  }

  .about__grid {
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
  }

  .certs__layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.8fr);
    gap: var(--space-2xl);
  }

  .contact__layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: var(--space-2xl);
    align-items: start;
  }

  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

@media (min-width: 1024px) {
  .skills__grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .projects__grid .project-card--featured {
    grid-column: 1 / -1;
  }

  .projects__grid .project-card--featured .project-card__body {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto 1fr auto;
    column-gap: var(--space-xl);
  }

  .projects__grid .project-card--featured .project-card__header {
    grid-column: 1;
  }

  .projects__grid .project-card--featured .project-card__highlight,
  .projects__grid .project-card--featured .project-card__desc {
    grid-column: 1;
  }

  .projects__grid .project-card--featured .project-card__tags {
    grid-column: 1;
    align-self: end;
  }

  .projects__grid .project-card--featured .project-card__actions {
    grid-column: 2;
    grid-row: 1 / -1;
    align-self: center;
    padding-top: 0;
  }
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__cursor,
  .timeline__item--current .timeline__marker,
  .hero__orb {
    animation: none;
  }

  .project-card:hover .project-card__visual img {
    transform: none;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}