/*
 * =====================================================
 * Portfolio Hirwa
 * =====================================================
 */

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

:root {
  --bg: #ffffff;
  --bg2: #f7f8fa;
  --bg3: #eef1f6;
  --cyan: #007aff;
  --cyan-dark: #0055cc;
  --orange: #ff6b35;
  --accent: #007aff;
  --text: #0a0e1a;
  --text2: #3a4358;
  --text3: #6b7a99;
  --muted: #6b7a99;
  --card: #f7f8fa;
  --surface: rgba(0, 122, 255, 0.05);
  --border: rgba(0, 122, 255, 0.15);
  --border2: rgba(0, 0, 0, 0.08);
  --grad: linear-gradient(135deg, #007aff, #0055cc);
  --grad-warm: linear-gradient(135deg, #ff6b35, #ff3b00);
  --font-display:
    system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Helvetica Neue", Arial, sans-serif;
  --font-mono:
    ui-monospace, "SF Mono", SFMono-Regular, Menlo, Monaco, "Cascadia Code",
    Consolas, monospace;
  --font-serif: ui-serif, "Georgia", "Times New Roman", Times, serif;
  --shadow: 0 2px 20px rgba(0, 122, 255, 0.1);
  --shadow-lg: 0 8px 40px rgba(0, 122, 255, 0.15);
}

[data-theme="dark"] {
  --bg: #0d1117;
  --bg2: #161b22;
  --bg3: #21262d;
  --text: #e6edf3;
  --text2: #b1bac4;
  --text3: #8b949e;
  --muted: #8b949e;
  --card: #161b22;
  --surface: rgba(0, 122, 255, 0.08);
  --border: rgba(0, 122, 255, 0.25);
  --border2: rgba(255, 255, 255, 0.1);
  --shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  cursor: none;
  overflow-x: hidden;
}

/* ============================
           CUSTOM CURSOR
        ============================ */
#cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10001;
  transform: translate(-50%, -50%);
  mix-blend-mode: difference;
  will-change: transform;
}

#cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  width: 40px;
  height: 40px;
  border: 1.5px solid rgba(0, 122, 255, 0.4);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transform: translate(-50%, -50%);
  will-change:
    transform, width, height, border-radius, border-color, background-color;
  background: transparent;
  transition:
    width 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    height 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    border-radius 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.3s,
    background-color 0.3s;
}

/* ============================
           LOADING SCREEN
        ============================ */
#loader {
  position: fixed;
  inset: 0;
  background: #ffffff;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 1.5rem;
}

#loader.hide {
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.5s ease,
    visibility 0.5s ease;
}

.loader-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 4rem;
  color: var(--cyan);
  letter-spacing: -0.05em;
  animation: loaderPulse 1.4s ease-in-out infinite;
}

@keyframes loaderPulse {
  0%,
  100% {
    opacity: 0.3;
    transform: scale(0.96);
  }
  50% {
    opacity: 1;
    transform: scale(1);
  }
}

.loader-bar {
  width: 120px;
  height: 2px;
  background: var(--bg3);
  border-radius: 2px;
  overflow: hidden;
}

.loader-bar::after {
  content: "";
  display: block;
  width: 40%;
  height: 100%;
  background: var(--cyan);
  border-radius: 2px;
  animation: loaderSlide 1s ease-in-out infinite;
}

@keyframes loaderSlide {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(350%);
  }
}

/* ============================
           NAVIGATION
        ============================ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 4rem;
  background: var(--bg);
  opacity: 0.98;
  transition:
    background 0.3s,
    border-color 0.3s;
  border-bottom: 0.5px solid var(--border2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.3s ease;
}

nav.scrolled {
  padding: 0.8rem 4rem;
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--text);
  letter-spacing: -0.04em;
}

.nav-logo span {
  color: var(--cyan);
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text3);
  text-decoration: none;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--cyan);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  background: var(--cyan);
  color: #fff;
  border: none;
  padding: 0.55rem 1.2rem;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition:
    background 0.2s,
    transform 0.2s;
  text-decoration: none;
}

.nav-cta:hover {
  background: var(--cyan-dark);
  transform: translateY(-1px);
}

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  z-index: 1002;
  background: none;
  border: none;
  color: var(--text);
}

.nav-hamburger span {
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

#nav-toggle {
  display: none;
}

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Mobile Menu Overlay */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  width: 100%;
  min-height: 100vh;
  background: rgba(255, 255, 255, 0.95);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 0.3s,
    visibility 0.3s;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  overflow-y: auto;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

[data-theme="dark"] .mobile-menu {
  background: rgba(13, 17, 23, 0.95);
}

.mobile-menu-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 2001;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 0.5px solid var(--border2);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
  transition:
    background 0.3s,
    border-color 0.3s;
}

.mobile-menu-close:hover {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #fff;
}

.mobile-menu-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: 2rem;
  padding: 5rem 2rem;
  transform: translateY(-30px);
  transition: transform 0.5s ease;
}

.mobile-menu.open .mobile-menu-content {
  transform: translateY(0);
}

.mobile-nav-link {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text3);
  text-decoration: none;
  transition:
    color 0.3s,
    transform 0.3s;
}

.mobile-nav-link:hover {
  color: var(--cyan);
  transform: scale(1.1);
}

.mobile-nav-cta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--cyan);
  color: #fff;
  padding: 1rem 2.5rem;
  border-radius: 8px;
  text-decoration: none;
  margin-top: 1rem;
  transition:
    background 0.3s,
    transform 0.3s;
}

.mobile-nav-cta:hover {
  background: var(--cyan-dark);
  transform: translateY(-2px);
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 0.5px solid var(--border2);
  border-radius: 8px;
  padding: 0.4rem;
  cursor: pointer;
  color: var(--text3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    color 0.3s,
    border-color 0.3s;
}

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

[data-theme="dark"] .icon-sun {
  display: block;
}
[data-theme="dark"] .icon-moon {
  display: none;
}
.icon-sun {
  display: none;
}
.icon-moon {
  display: block;
}

/* ============================
           HERO
        ============================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8rem 4rem 6rem;
  overflow: hidden;
  background: var(--bg);
}

#grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

#particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-orb {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(0, 122, 255, 0.08) 0%,
    transparent 70%
  );
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orbPulse 6s ease-in-out infinite;
  pointer-events: none;
}

.hero-orb-2 {
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(
    circle,
    rgba(255, 107, 53, 0.06) 0%,
    transparent 70%
  );
  border-radius: 50%;
  top: 20%;
  right: 15%;
  animation: orbDrift 9s ease-in-out infinite;
  pointer-events: none;
}

@keyframes orbPulse {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.15);
    opacity: 0.7;
  }
}

@keyframes orbDrift {
  0%,
  100% {
    transform: translate(0, 0);
  }
  33% {
    transform: translate(-20px, 20px);
  }
  66% {
    transform: translate(20px, -10px);
  }
}

.hero-content {
  position: relative;
  z-index: 10;
  text-align: center;
  max-width: 900px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  border: 1px solid var(--border);
  padding: 0.45rem 1rem;
  border-radius: 100px;
  background: rgba(0, 122, 255, 0.05);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.6s ease forwards 0.3s;
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--cyan);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

.profile-photo-wrapper {
  margin-bottom: 1.5rem;
  display: inline-block;
  position: relative;
}

.profile-photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--bg);
  box-shadow:
    0 0 0 3px var(--cyan),
    var(--shadow-lg);
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.45s;
}

.profile-photo:hover {
  transform: scale(1.05);
  box-shadow:
    0 0 0 4px var(--cyan-dark),
    0 8px 30px rgba(0, 122, 255, 0.3);
}

@media (max-width: 600px) {
  .profile-photo {
    width: 110px;
    height: 110px;
  }
}

.hero-title-main {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4rem, 10vw, 8rem);
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--text);
  display: block;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.6s;
}

.hero-title-main span {
  color: var(--cyan);
}

.hero-title-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: clamp(1.2rem, 2.5vw, 2.5rem);
  color: var(--text2);
  margin-top: 0.4rem;
  display: block;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 0.85s;
}

.hero-tagline {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text3);
  letter-spacing: 0.05em;
  margin-top: 1.8rem;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 1.1s;
}

.hero-tagline span {
  color: var(--orange);
  margin: 0 0.3rem;
}

.hero-typewriter {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
  letter-spacing: 0.04em;
  min-height: 1.2rem;
  margin-top: 0.6rem;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 1.3s;
}

.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 0.9rem;
  background: var(--cyan);
  margin-left: 2px;
  vertical-align: middle;
  animation: cursorBlink 1s step-end infinite;
}

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

.hero-cta-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 2rem;
}

.hero-cta {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  background: var(--cyan);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 1.5s;
  transition:
    background 0.25s,
    transform 0.2s,
    box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}

.hero-cta:hover {
  background: var(--cyan-dark);
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--shadow-lg);
}

.hero-cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 2rem;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  border: 0.5px solid var(--border2);
  cursor: pointer;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 1.7s;
  transition:
    border-color 0.25s,
    background 0.25s,
    transform 0.2s;
}

.hero-cta-secondary:hover {
  border-color: var(--cyan);
  background: rgba(0, 122, 255, 0.04);
  transform: translateY(-2px);
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.scroll-indicator {
  position: absolute;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  opacity: 0;
  animation: fadeUp 0.7s ease forwards 2.2s;
  z-index: 1;
}

.scroll-indicator span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 32px;
  background: linear-gradient(to bottom, var(--cyan), transparent);
  animation: scrollAnim 2s ease-in-out infinite;
}

@keyframes scrollAnim {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
  51% {
    transform: scaleY(1);
    transform-origin: bottom;
  }
  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ============================
           SECTIONS GENERAL
        ============================ */
section {
  padding: 7rem 4rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-tag::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--cyan);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.04em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 2rem;
}

.section-title em {
  font-family: var(--font-serif);
  font-style: italic;
  color: var(--cyan);
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
}

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

/* ============================
           ABOUT SECTION
        ============================ */
#about {
  background: var(--bg);
  border-top: 0.5px solid var(--border2);
}

.about-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6rem;
  align-items: center;
}

.about-text p {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--text2);
  margin-top: 1.5rem;
}

.stat-cards {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.stat-card {
  flex: 1;
  min-width: 100px;
  background: var(--bg2);
  border: 0.5px solid var(--border2);
  border-top: 2px solid var(--cyan);
  border-radius: 8px;
  padding: 1.2rem;
  text-align: center;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.stat-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.2rem;
  color: var(--cyan);
  letter-spacing: -0.04em;
  display: block;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: 0.3rem;
  display: block;
}

.about-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-visual svg {
  width: 100%;
  max-width: 400px;
}

/* ============================
           SKILLS SECTION
        ============================ */
#skills {
  background: var(--bg2);
  border-top: 0.5px solid var(--border2);
}

.skills-header {
  max-width: 1200px;
  margin: 0 auto 3.5rem;
}

.skill-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.skill-filter-btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  border: 0.5px solid var(--border2);
  background: var(--bg2);
  color: var(--text3);
  cursor: pointer;
  transition: all 0.25s;
}

.skill-filter-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.skill-filter-btn.active {
  background: var(--cyan);
  color: #fff;
  border-color: var(--cyan);
}

.skills-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  background: var(--bg);
  border: 0.5px solid var(--border2);
  border-radius: 12px;
  padding: 2rem;
  transition:
    border-color 0.3s,
    transform 0.3s,
    box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}

.skill-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.skill-card:hover::before {
  opacity: 1;
}

.skill-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 122, 255, 0.08);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  border: 0.5px solid var(--border);
}

.skill-icon svg {
  width: 24px;
  height: 24px;
}

.skill-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.03em;
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.2rem;
}

.skill-bar {
  width: 100%;
  height: 4px;
  background: var(--bg3);
  border-radius: 4px;
  margin-top: 0.6rem;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  width: var(--skill-pct);
  background: var(--grad);
  border-radius: 4px;
  animation: barGrow 1.2s ease-out forwards;
  transform-origin: left;
}

.skill-bar-yellow {
  background: linear-gradient(135deg, #f7df1e, #d4b800);
}
.skill-bar-cyan-light {
  background: linear-gradient(135deg, #61dafb, #21a0c8);
}
.skill-bar-green {
  background: linear-gradient(135deg, #689f38, #4e7a27);
}
.skill-bar-blue {
  background: linear-gradient(135deg, #2396ed, #1a73b5);
}

@keyframes barGrow {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

.skill-desc {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.7;
  color: var(--text3);
  margin-top: 0.7rem;
}

.skill-tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.skill-tags span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text2);
  background: var(--bg2);
  padding: 0.2rem 0.7rem;
  border-radius: 4px;
  border: 0.5px solid var(--border2);
}

/* ============================
           SERVICES SECTION
        ============================ */
.services-sub {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text3);
  margin-top: 0.8rem;
  margin-bottom: 3rem;
  max-width: 500px;
  line-height: 1.6;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

        .service-card {
            background: var(--bg2);
            border: 1px solid var(--border2);
            border-radius: 12px;
            padding: 2rem;
            transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
            position: relative;
            overflow: hidden;
        }

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}

        .service-card:hover {
            border-color: var(--cyan);
            transform: translateY(-4px);
            box-shadow: 0 0 0 2px var(--cyan), var(--shadow);
        }

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(0, 122, 255, 0.08);
  border: 0.5px solid rgba(0, 122, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan);
  margin-bottom: 1.2rem;
}

.service-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 0.6rem;
}

.service-desc {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text3);
  line-height: 1.7;
  margin-bottom: 1.2rem;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.service-tags span {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--cyan);
  background: rgba(0, 122, 255, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 0.5px solid var(--border);
}

/* ============================
           PROJECTS SECTION
        ============================ */
#projects {
  background: var(--bg);
  border-top: 0.5px solid var(--border2);
}

.project-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.filter-btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 6px;
  border: 0.5px solid var(--border2);
  background: var(--bg2);
  color: var(--text3);
  cursor: pointer;
  transition: all 0.25s;
}

.filter-btn:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

.filter-btn.active {
  background: var(--cyan);
  color: #fff;
  border-color: var(--cyan);
}

.skills-subsection {
  margin-top: 4rem;
}

.skills-subtitle {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.skills-subtitle em {
  font-style: italic;
  color: var(--cyan);
}

.form-confirm {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #34C759;
  min-height: 1.2em;
}

.btn-loader .spin {
  animation: spin 0.8s linear infinite;
}

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

.projects-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.project-card {
  background: var(--bg2);
  border: 0.5px solid var(--border2);
  border-radius: 10px;
  padding: 0;
  transition:
    border-color 0.3s,
    transform 0.3s,
    box-shadow 0.3s;
  position: relative;
  overflow: hidden;
}

.project-view {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg);
  color: var(--text);
  border: 0.5px solid var(--border2);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.3s, transform 0.3s, background 0.3s, color 0.3s;
  z-index: 2;
  text-decoration: none;
}

.project-card:hover .project-view {
  opacity: 1;
  transform: translateY(0);
}

.project-view:hover {
  background: var(--cyan);
  color: #fff;
  border-color: var(--cyan);
}

.project-thumb {
  width: 100%;
  height: 140px;
  object-fit: cover;
  display: block;
  border-bottom: 0.5px solid var(--border2);
}

.project-body {
  padding: 1.2rem;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-warm);
  opacity: 0;
  transition: opacity 0.3s;
}

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

.project-card:hover::before {
  opacity: 1;
}

.project-card:hover .project-desc {
  -webkit-line-clamp: unset;
  display: block;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}

.project-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  color: var(--text);
  letter-spacing: -0.03em;
}

.project-status {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  background: #dcfce7;
  color: #16a34a;
}

.project-desc {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 1.6;
  color: var(--text3);
  margin-top: 0.4rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-techs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-top: 0.7rem;
}

.project-techs span {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--cyan);
  background: rgba(0, 122, 255, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 0.5px solid var(--border);
}

.project-links {
  display: flex;
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.project-links a {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  text-decoration: none;
  letter-spacing: 0.06em;
  transition: color 0.2s;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.project-links a:hover {
  color: var(--cyan);
}

/* ============================
           EXPERIENCE SECTION
        ============================ */
#experience {
  background: var(--bg2);
  border-top: 0.5px solid var(--border2);
}

.experience-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.timeline {
  position: relative;
  padding-left: 2.5rem;
  margin-top: 3rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 1.5px;
  background: var(--grad);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.1rem;
  top: 6px;
  width: 12px;
  height: 12px;
  background: var(--cyan);
  border-radius: 50%;
  border: 2px solid var(--bg2);
  box-shadow: 0 0 0 2px var(--cyan);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--cyan);
  letter-spacing: 0.06em;
}

.timeline-position {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  margin-top: 0.1rem;
}

.timeline-company {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text2);
}

.timeline-company a {
  color: var(--cyan);
  text-decoration: none;
}

.timeline-company a:hover {
  text-decoration: underline;
}

.timeline-company-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 0.2rem;
}

.timeline-company-logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
  border: 0.5px solid var(--border2);
  background: var(--bg);
}

.timeline-location {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  margin-top: 0.1rem;
}

.timeline-summary {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.8;
  color: var(--text3);
  margin-top: 0.7rem;
}

.timeline-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.7rem;
}

.timeline-skills span {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text2);
  background: var(--bg);
  padding: 0.2rem 0.7rem;
  border-radius: 4px;
  border: 0.5px solid var(--border2);
}

/* ============================
           CONTACT SECTION
        ============================ */
#contact {
  background: var(--bg);
  border-top: 0.5px solid var(--border2);
}

.contact-inner {
  max-width: 800px;
  margin: 0 auto;
}

.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.contact-card {
  background: var(--bg2);
  border: 0.5px solid var(--border2);
  border-radius: 10px;
  padding: 1.8rem;
  text-align: center;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.contact-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  background: rgba(0, 122, 255, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  color: var(--cyan);
}

.contact-card-icon svg {
  width: 22px;
  height: 22px;
}

.contact-card-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact-card-value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text);
  margin-top: 0.3rem;
}

.contact-card-value a {
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s;
}

.contact-card-value a:hover {
  color: var(--cyan);
}

.contact-social {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 3rem;
}

.contact-social a {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg2);
  border: 0.5px solid var(--border2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text3);
  text-decoration: none;
  transition: all 0.2s;
}

.contact-social a svg {
  width: 20px;
  height: 20px;
}

.contact-social a:hover {
  background: var(--cyan);
  color: #fff;
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.contact-form {
  margin-top: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.9rem 1.2rem;
  background: var(--bg2);
  border: 0.5px solid var(--border2);
  border-radius: 8px;
  color: var(--text);
  outline: none;
  transition:
    border-color 0.25s,
    box-shadow 0.25s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.08);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--text3);
}

.contact-form textarea {
  resize: vertical;
  min-height: 120px;
}

.contact-form button {
  align-self: flex-start;
}

@media (max-width: 600px) {
  .contact-form input,
  .contact-form textarea {
    font-size: 16px;
  }
  .contact-form button {
    align-self: stretch;
  }
}

/* ============================
           CTA FINAL
        ============================ */
#cta-final {
  background: var(--bg2);
  border-top: 0.5px solid var(--border2);
  padding: 8rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      ellipse at 20% 50%,
      rgba(0, 122, 255, 0.05) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 80% 50%,
      rgba(255, 107, 53, 0.04) 0%,
      transparent 50%
    );
  pointer-events: none;
}

.cta-inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.cta-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.5rem;
}

.cta-headline {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3rem, 8vw, 6rem);
  letter-spacing: -0.05em;
  color: var(--text);
  line-height: 0.95;
}

.cta-headline em {
  font-style: normal;
  color: var(--cyan);
}

.cta-sub {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--text3);
  margin-top: 1.5rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 3rem;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: var(--cyan);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: 6px;
  transition:
    background 0.2s,
    transform 0.2s;
  cursor: pointer;
}

.btn-primary:hover {
  background: var(--cyan-dark);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 2rem;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 0.5px solid var(--border2);
  border-radius: 6px;
  transition:
    border-color 0.2s,
    background 0.2s,
    color 0.2s,
    transform 0.2s;
  cursor: pointer;
}

.btn-secondary:hover,
.btn-secondary:focus {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

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

/* ============================
           FOOTER
        ============================ */
footer {
  background: var(--bg);
  border-top: 0.5px solid var(--border2);
  padding: 2rem 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--text);
  letter-spacing: -0.04em;
}

.footer-brand span {
  color: var(--cyan);
}

.footer-info {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  letter-spacing: 0.06em;
  text-align: center;
}

.footer-info span {
  color: var(--cyan);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--text3);
  letter-spacing: 0.04em;
  text-align: right;
}

.footer-social {
  display: flex;
  gap: 0.8rem;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 0.5px solid var(--border2);
  color: var(--text3);
  transition:
    color 0.3s,
    border-color 0.3s,
    background 0.3s;
}

.footer-social a svg {
  width: 14px;
  height: 14px;
}

.footer-social a:hover {
  color: #fff;
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ============================
           FORMATION SECTION
        ============================ */
#formation {
  background: var(--bg);
  border-top: 0.5px solid var(--border2);
}

.formation-inner {
  max-width: 1200px;
  margin: 0 auto;
}

.formation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.formation-card {
  background: var(--bg2);
  border: 0.5px solid var(--border2);
  border-radius: 12px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition:
    border-color 0.3s,
    transform 0.3s,
    box-shadow 0.3s;
}

.formation-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad);
  opacity: 0;
  transition: opacity 0.3s;
}

.formation-card:hover {
  border-color: var(--cyan);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.formation-card:hover::before {
  opacity: 1;
}

.formation-year {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2rem;
  color: var(--cyan);
  letter-spacing: -0.04em;
  line-height: 1;
}

.formation-degree {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  margin-top: 0.8rem;
  letter-spacing: -0.02em;
}

.formation-school {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text2);
  margin-top: 0.4rem;
}

.formation-location {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text3);
  margin-top: 0.2rem;
}

@media (max-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .formation-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================
           RESPONSIVE
        ============================ */
@media (max-width: 900px) {
  nav {
    padding: 1rem 1.5rem;
  }

  .nav-links {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }

  nav.scrolled {
    padding: 0.8rem 1.5rem;
  }

  section {
    padding: 5rem 1.5rem;
  }

  #hero {
    padding: 7rem 1.5rem 4rem;
  }

  .hero-cta-group {
    margin-bottom: 2.5rem;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

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

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

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

  .contact-cards {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
    padding: 2rem 1.5rem;
  }

  .footer-social {
    justify-content: center;
  }

  .footer-copy {
    text-align: center;
  }

  .about-visual {
    order: -1;
  }

  #cta-final {
    padding: 5rem 1.5rem;
  }
}

@media (max-width: 600px) {
  .hero-title-main {
    font-size: 3rem;
  }
  .hero-title-sub {
    font-size: 1.2rem;
  }
  .stat-cards {
    flex-direction: column;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Newsletter */
.newsletter-form {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 1.5rem;
}

.newsletter-form input {
  flex: 1;
  min-width: 220px;
  max-width: 340px;
  padding: 0.9rem 1.2rem;
  border-radius: 12px;
  border: 0.5px solid var(--border2);
  background: var(--card);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.3s;
}

.newsletter-form input:focus {
  border-color: var(--accent);
}

.newsletter-btn {
  padding: 0.9rem 1.8rem;
  border-radius: 12px;
  border: none;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition:
    transform 0.3s,
    opacity 0.3s;
}

.newsletter-btn:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.newsletter-msg {
  width: 100%;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
  margin: 0;
  min-height: 1.2em;
}

.cta-desc {
  text-align: center;
  font-size: 1rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
}


/* BACK TO TOP */
#back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--cyan);
  background: var(--bg2);
  color: var(--cyan);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s, visibility 0.3s, transform 0.3s, background 0.2s;
  box-shadow: 0 4px 14px rgba(0,0,0,0.15);
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  background: var(--cyan);
  color: #fff;
}

/* NAV ACTIVE */
.nav-links a.active {
  color: var(--cyan);
}
.nav-links a.active::after {
  content: '';
  display: block;
  width: 100%;
  height: 2px;
  background: var(--cyan);
  margin-top: 2px;
  border-radius: 1px;
}