/* ============================================================
   IMPORTS
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ============================================================
   CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Colors */
  --color-bg:           #0a0f1e;
  --color-surface:      #111827;
  --color-surface-2:    #1e293b;
  --color-surface-3:    #243044;
  --color-accent:       #06b6d4;
  --color-accent-2:     #10b981;
  --color-accent-glow:  rgba(6, 182, 212, 0.18);
  --color-accent-2-glow:rgba(16, 185, 129, 0.15);
  --color-text:         #f1f5f9;
  --color-text-muted:   #94a3b8;
  --color-text-dim:     #64748b;
  --color-border:       #1e293b;
  --color-border-light: #2d3f55;
  --color-error:        #f87171;
  --color-success:      #34d399;
  --color-warning:      #fbbf24;

  /* Typography */
  --font-sans:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', ui-monospace, monospace;

  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;
  --text-4xl:   2.25rem;
  --text-5xl:   3rem;
  --text-6xl:   3.75rem;
  --text-7xl:   4.5rem;

  --leading-tight:  1.25;
  --leading-snug:   1.375;
  --leading-normal: 1.5;
  --leading-relaxed:1.625;

  --font-weight-light:    300;
  --font-weight-normal:   400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;
  --font-weight-extrabold:800;
  --font-weight-black:    900;

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm:   0.25rem;
  --radius-md:   0.5rem;
  --radius-lg:   0.75rem;
  --radius-xl:   1rem;
  --radius-2xl:  1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.7);
  --shadow-accent: 0 0 24px var(--color-accent-glow);
  --shadow-accent-2: 0 0 24px var(--color-accent-2-glow);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
  --transition-spring: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Layout */
  --container-max:   1200px;
  --nav-height:      4.5rem;
  --section-padding: var(--space-24);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ============================================================
   SELECTION
   ============================================================ */
::selection {
  background: var(--color-accent);
  color: var(--color-bg);
}

/* ============================================================
   SCROLLBAR
   ============================================================ */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-surface-2);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* ============================================================
   LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--space-12);
  }
}

/* ============================================================
   FADE-UP ANIMATION
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s var(--transition-slow), transform 0.6s var(--transition-slow);
}

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

/* Staggered delays for children */
.fade-up:nth-child(1) { transition-delay: 0ms; }
.fade-up:nth-child(2) { transition-delay: 80ms; }
.fade-up:nth-child(3) { transition-delay: 160ms; }
.fade-up:nth-child(4) { transition-delay: 240ms; }
.fade-up:nth-child(5) { transition-delay: 320ms; }
.fade-up:nth-child(6) { transition-delay: 400ms; }

[style*="--item-index: 0"] { transition-delay: 0ms; }
[style*="--item-index: 1"] { transition-delay: 100ms; }
[style*="--item-index: 2"] { transition-delay: 200ms; }
[style*="--item-index: 3"] { transition-delay: 300ms; }
[style*="--item-index: 4"] { transition-delay: 400ms; }

[style*="--card-index: 0"] { transition-delay: 0ms; }
[style*="--card-index: 1"] { transition-delay: 100ms; }
[style*="--card-index: 2"] { transition-delay: 200ms; }
[style*="--card-index: 3"] { transition-delay: 300ms; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-bg);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.3);
}

.btn--primary:hover {
  background: #22d3ee;
  box-shadow: 0 0 32px rgba(6, 182, 212, 0.5);
  transform: translateY(-2px);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border-light);
}

.btn--secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: 0 0 16px var(--color-accent-glow);
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: var(--text-base);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.nav--scrolled {
  background: rgba(10, 15, 30, 0.85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  box-shadow: 0 1px 0 var(--color-border), var(--shadow-md);
}

.nav__inner {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

@media (min-width: 1024px) {
  .nav__inner {
    padding-inline: var(--space-12);
  }
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-text);
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

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

.nav__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-black);
  color: var(--color-bg);
  font-family: var(--font-mono);
}

.nav__links {
  display: none;
  align-items: center;
  gap: var(--space-1);
}

@media (min-width: 768px) {
  .nav__links {
    display: flex;
  }
}

.nav__link {
  position: relative;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 80%;
  height: 1.5px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base);
}

.nav__link:hover {
  color: var(--color-text);
  background: rgba(255,255,255,0.04);
}

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

.nav__link--active::after {
  transform: translateX(-50%) scaleX(1);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__lang-toggle {
  padding: var(--space-1) var(--space-3);
  border: 1.5px solid var(--color-border-light);
  border-radius: var(--radius-md);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  transition: all var(--transition-fast);
  background: transparent;
}

.nav__lang-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-glow);
}

.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

@media (min-width: 768px) {
  .nav__hamburger {
    display: none;
  }
}

.nav__hamburger:hover {
  background: rgba(255,255,255,0.06);
}

.nav__hamburger-bar {
  width: 18px;
  height: 1.5px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  transform-origin: center;
}

.nav__hamburger--open .nav__hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger--open .nav__hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger--open .nav__hamburger-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile nav */
@media (max-width: 767px) {
  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 15, 30, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-4) var(--space-6);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
  }

  .nav__links--open {
    display: flex;
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
  }
}

/* ============================================================
   SECTION BASE
   ============================================================ */
.section {
  padding-top: calc(var(--nav-height) + var(--section-padding));
  padding-bottom: var(--section-padding);
}

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

.section__header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-16);
}

.section__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  color: var(--color-accent);
  letter-spacing: 0.12em;
  opacity: 0.7;
}

.section__title {
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

@media (min-width: 768px) {
  .section__title {
    font-size: var(--text-4xl);
  }
}

.section__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--color-border-light), transparent);
  min-width: 2rem;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: var(--nav-height);
  padding-bottom: var(--space-16);
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(6, 182, 212, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6, 182, 212, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
  pointer-events: none;
}

.hero__particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

/* Floating particles */
.hero__particles::before,
.hero__particles::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
}

.hero__particles::before {
  width: 320px;
  height: 320px;
  top: 15%;
  right: 10%;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.08) 0%, transparent 70%);
  animation-delay: 0s;
}

.hero__particles::after {
  width: 240px;
  height: 240px;
  bottom: 20%;
  left: 5%;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.hero__container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
}

@media (min-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  letter-spacing: 0.06em;
  width: fit-content;
}

.hero__badge-icon {
  font-size: 0.6rem;
  color: var(--color-accent-2);
}

.hero__greeting {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-normal);
}

.hero__name {
  font-size: clamp(2.5rem, 6vw, var(--text-7xl));
  font-weight: var(--font-weight-black);
  letter-spacing: -0.04em;
  line-height: var(--leading-tight);
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 60%, var(--color-accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__role-wrapper {
  font-family: var(--font-mono);
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-2xl));
  color: var(--color-accent-2);
  font-weight: var(--font-weight-medium);
  min-height: 2rem;
  display: flex;
  align-items: center;
  gap: 0;
}

.hero__role-prefix {
  color: var(--color-text-dim);
  margin-right: 0.25em;
}

.hero__cursor {
  color: var(--color-accent);
  animation: blink 1.1s step-end infinite;
  font-weight: var(--font-weight-light);
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero__location {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.hero__location-icon {
  width: 1rem;
  height: 1rem;
  color: var(--color-accent);
  flex-shrink: 0;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  padding-top: var(--space-2);
}

/* Terminal */
.hero__visual {
  display: none;
}

@media (min-width: 1024px) {
  .hero__visual {
    display: flex;
    align-items: center;
    justify-content: center;
  }
}

.hero__terminal {
  width: 100%;
  max-width: 500px;
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl), 0 0 60px rgba(6, 182, 212, 0.06);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.hero__terminal-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-2);
  border-bottom: 1px solid var(--color-border);
}

.hero__terminal-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.hero__terminal-dot--red    { background: #ff5f57; }
.hero__terminal-dot--yellow { background: #febc2e; }
.hero__terminal-dot--green  { background: #28c840; }

.hero__terminal-title {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-left: auto;
  margin-right: auto;
}

.hero__terminal-body {
  padding: var(--space-4) var(--space-5);
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.hero__terminal-line {
  display: flex;
  align-items: center;
  gap: 0.25em;
}

.hero__terminal-prompt {
  color: var(--color-accent-2);
  user-select: none;
  flex-shrink: 0;
}

.hero__terminal-cmd {
  color: var(--color-text);
}

.hero__terminal-output {
  padding-left: 0;
}

.hero__terminal-result {
  color: var(--color-accent);
  font-size: var(--text-xs);
  opacity: 0.9;
}

/* Scroll hint */
.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero__scroll-line {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, transparent, var(--color-accent), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0% { opacity: 0; transform: scaleY(0) translateY(-50%); }
  50% { opacity: 1; transform: scaleY(1) translateY(0); }
  100% { opacity: 0; transform: scaleY(0) translateY(50%); }
}

/* ============================================================
   ABOUT
   ============================================================ */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (min-width: 1024px) {
  .about__grid {
    grid-template-columns: 3fr 2fr;
  }
}

.about__summary {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
}

.about__details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.about__detail {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-fast);
}

.about__detail:hover {
  border-color: var(--color-border-light);
}

.about__detail-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: var(--font-mono);
}

.about__detail-value {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
}

.about__card {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-8));
}

.about__card-inner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  box-shadow: var(--shadow-lg);
  transition: box-shadow var(--transition-base);
}

.about__card-inner:hover {
  box-shadow: var(--shadow-lg), var(--shadow-accent);
}

.about__avatar {
  position: relative;
  width: 120px;
  height: 120px;
}

.about__avatar-initials {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-black);
  color: var(--color-bg);
  letter-spacing: -0.04em;
  position: relative;
  z-index: 1;
}

.about__avatar-ring {
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1.5px solid rgba(6, 182, 212, 0.3);
  animation: spin-slow 20s linear infinite;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.about__stats {
  display: flex;
  gap: var(--space-6);
  width: 100%;
  justify-content: center;
}

.about__stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  text-align: center;
}

.about__stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-black);
  font-family: var(--font-mono);
  color: var(--color-accent);
  line-height: 1;
}

.about__stat-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .skills__grid {
    grid-template-columns: 1fr 1fr;
  }
}

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

.skills__category {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.skills__category:hover {
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-md), 0 0 20px rgba(6, 182, 212, 0.04);
}

.skills__category-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.skills__category-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: var(--color-accent-glow);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
}

.skills__category-icon svg {
  width: 1rem;
  height: 1rem;
}

.skills__category-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.skills__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-pill {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  transition: all var(--transition-fast);
  cursor: default;
}

.skill-pill:hover {
  background: var(--color-accent-glow);
  border-color: rgba(6, 182, 212, 0.4);
  color: var(--color-accent);
  transform: translateY(-1px);
}

/* ============================================================
   EXPERIENCE
   ============================================================ */
.experience__timeline {
  position: relative;
  padding-left: 2.5rem;
}

.experience__timeline::before {
  content: '';
  position: absolute;
  top: 0.75rem;
  bottom: 0;
  left: 0.5625rem;
  width: 1.5px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-border), transparent);
}

.experience__item {
  position: relative;
  margin-bottom: var(--space-8);
}

.experience__item:last-child {
  margin-bottom: 0;
}

.experience__dot {
  position: absolute;
  left: -2.5rem;
  top: 1.25rem;
  width: 1.25rem;
  height: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.experience__dot-inner {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 5px var(--color-border-light), 0 0 12px var(--color-accent-glow);
  transition: all var(--transition-base);
}

.experience__item:hover .experience__dot-inner {
  background: var(--color-accent-2);
  box-shadow: 0 0 0 4px var(--color-bg), 0 0 0 5px rgba(16, 185, 129, 0.4), 0 0 16px var(--color-accent-2-glow);
}

.experience__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.experience__card:hover {
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}

.experience__card-header {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

@media (min-width: 640px) {
  .experience__card-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.experience__role {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.experience__company-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.experience__company {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
}

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

.experience__location {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.experience__location svg {
  width: 0.75rem;
  height: 0.75rem;
  flex-shrink: 0;
}

.experience__period {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  background: var(--color-surface-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  white-space: nowrap;
  flex-shrink: 0;
  align-self: flex-start;
}

.experience__period svg {
  width: 0.75rem;
  height: 0.75rem;
  flex-shrink: 0;
}

.experience__bullets {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.experience__bullet {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.experience__bullet-icon {
  color: var(--color-accent);
  font-size: 0.6rem;
  flex-shrink: 0;
  margin-top: 0.4rem;
}

/* ============================================================
   EDUCATION
   ============================================================ */
.education__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .education__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.education__card {
  position: relative;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.education__card:hover {
  border-color: var(--color-border-light);
  box-shadow: var(--shadow-md), 0 0 20px rgba(6, 182, 212, 0.04);
  transform: translateY(-3px);
}

.education__card-number {
  position: absolute;
  top: var(--space-4);
  right: var(--space-5);
  font-family: var(--font-mono);
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-black);
  color: rgba(255,255,255,0.03);
  line-height: 1;
  pointer-events: none;
  user-select: none;
}

.education__card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.education__card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-4);
}

.education__degree {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.education__full-degree {
  font-size: var(--text-xs);
  color: var(--color-accent);
  margin-top: var(--space-1);
  font-family: var(--font-mono);
}

.education__period {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  background: rgba(255,255,255,0.04);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  flex-shrink: 0;
  align-self: flex-start;
}

.education__institution-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.education__institution {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent-2);
}

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

.education__location {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

.education__location svg {
  width: 0.75rem;
  height: 0.75rem;
  flex-shrink: 0;
}

.education__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-4);
}

.education__highlight {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.education__highlight-icon {
  color: var(--color-accent-2);
  font-size: 0.5rem;
  flex-shrink: 0;
  margin-top: 0.4rem;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-12);
  max-width: 560px;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
}

@media (min-width: 1024px) {
  .contact__grid {
    grid-template-columns: 1fr 2fr;
    align-items: start;
  }
}

.contact__info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.contact__info-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.contact__info-item:last-child {
  border-bottom: none;
}

.contact__info-item:hover {
  background: rgba(255,255,255,0.02);
}

.contact__info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-accent-glow);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__info-icon svg {
  width: 1.125rem;
  height: 1.125rem;
}

.contact__info-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

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

.contact__reveal-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast);
  font-family: var(--font-mono);
}

.contact__reveal-btn:hover {
  color: #22d3ee;
}

.contact__reveal-btn--revealed {
  font-family: var(--font-mono);
  color: var(--color-text);
  font-size: var(--text-xs);
}

.contact__reveal-btn--revealed:hover {
  color: var(--color-accent);
}

.contact__reveal-icon {
  width: 0.875rem;
  height: 0.875rem;
  flex-shrink: 0;
  opacity: 0.7;
}

.contact__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
  transition: color var(--transition-fast);
  word-break: break-all;
}

.contact__link:hover {
  color: #22d3ee;
}

.contact__link svg {
  width: 0.75rem;
  height: 0.75rem;
  flex-shrink: 0;
}

/* ============================================================
   FORM
   ============================================================ */
.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.contact__honeypot {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
}

.form-required {
  color: var(--color-accent);
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  caret-color: var(--color-accent);
}

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

.form-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.12);
}

.form-input--error {
  border-color: var(--color-error) !important;
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.12) !important;
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
  line-height: var(--leading-relaxed);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 1rem;
  font-weight: var(--font-weight-medium);
}

.form-status {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  display: none;
}

.form-status:not(:empty) {
  display: block;
}

.form-status--success {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: var(--color-success);
}

.form-status--error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--color-error);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0;
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 640px) {
  .footer__inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

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

.footer__copy a {
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.footer__copy a:hover {
  color: #22d3ee;
}

.footer__links {
  display: flex;
  gap: var(--space-4);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-accent);
}

/* ============================================================
   SKIP LINK (ACCESSIBILITY)
   ============================================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* ============================================================
   LOADING STATE
   ============================================================ */
#app-loading {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

#app-loading.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.loading-spinner__ring {
  width: 40px;
  height: 40px;
  border: 2px solid var(--color-border-light);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-spinner__text {
  font-size: var(--text-xs);
  font-family: var(--font-mono);
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

/* ============================================================
   RESPONSIVE UTILITIES
   ============================================================ */
@media (max-width: 639px) {
  :root {
    --section-padding: var(--space-16);
  }

  .section__title {
    font-size: var(--text-2xl);
  }

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

  .hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn--primary,
  .btn--secondary {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================================
   PRINT
   ============================================================ */
@media print {
  .nav, .hero__scroll-hint, .hero__visual, .hero__bg-grid, .hero__particles {
    display: none !important;
  }
  body {
    background: white;
    color: black;
  }
}