/* =========================================
   APIP ROMLI — PORTFOLIO CSS
   Author: Apip Romli
   Stack: Pure CSS, AOS, FontAwesome
   ========================================= */

/* === CSS VARIABLES (DARK / LIGHT THEME) === */
:root {
  /* Dark Mode (default) */
  --bg:          #0d0d1a;
  --bg-alt:      #0f0f20;
  --surface:     #14142b;
  --surface2:    #1c1c38;
  --surface3:    #22223f;
  --border:      rgba(56, 189, 248, 0.18);

  --accent:      #3b82f6;
  --accent-2:    #38bdf8;
  --accent-grad: linear-gradient(135deg, #3b82f6 0%, #38bdf8 100%);
  --accent-glow: rgba(59, 130, 246, 0.28);

  --text:        #e2e8f0;
  --text-muted:  #94a3b8;
  --text-subtle: #64748b;

  --white:       #ffffff;
  --radius:      14px;
  --radius-sm:   8px;
  --shadow:      0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.5);

  --nav-height:  68px;
  --transition:  0.3s ease;
}

/* Light Mode Variables */
[data-theme="light"] {
  --bg:          #f8fafc;
  --bg-alt:      #f1f5f9;
  --surface:     #ffffff;
  --surface2:    #f8fafc;
  --surface3:    #f1f5f9;
  --border:      rgba(56, 189, 248, 0.22);

  --text:        #0f172a;
  --text-muted:  #475569;
  --text-subtle: #64748b;

  --shadow:      0 4px 20px rgba(0,0,0,0.08);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.12);
  --accent-glow: rgba(59, 130, 246, 0.18);
}

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

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

body {
  font-family: 'Poppins', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

img { max-width: 100%; display: block; }
a  { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

/* Scrollbar */
::-webkit-scrollbar       { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 99px; }

/* === UTILITY === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-2 { margin-top: 2rem; }

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: all var(--transition);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: white;
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: inherit;
}

.btn:hover::after { opacity: 0.08; }

.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--accent-glow);
}

.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

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

.btn-full { width: 100%; justify-content: center; }

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(13, 13, 26, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border);
}

[data-theme="light"] .navbar.scrolled {
  background: rgba(248, 250, 252, 0.85);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 28px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Logo */
.nav-logo {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  transition: opacity var(--transition);
}

.nav-logo:hover { opacity: 0.85; }
.logo-bracket { color: var(--accent-2); }
.logo-accent  { color: var(--accent); }

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  position: relative;
  padding: 6px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 50px;
  transition: color var(--transition), background var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent-grad);
  border-radius: 99px;
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
}

.nav-link.active::after,
.nav-link:hover::after { width: 60%; }

/* Controls */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.theme-toggle {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}

.theme-toggle:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  transform: rotate(20deg);
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0 12px;
  height: 38px;
  border-radius: 50px;
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  transition: all var(--transition);
  cursor: pointer;
}

.lang-toggle i { font-size: 0.85rem; }

.lang-toggle:hover {
  background: var(--accent-grad);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px var(--accent-glow);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 32px;
  padding: 4px;
}

.bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 99px;
  transition: all var(--transition);
}

.hamburger.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Nav */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 8px 0 16px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}

.nav-mobile.open {
  display: flex;
  max-height: 300px;
}

.nav-mobile .nav-link {
  padding: 12px 28px;
  border-radius: 0;
  font-size: 0.95rem;
}

.nav-mobile .nav-link::after { display: none; }
.nav-mobile .nav-link:hover { background: var(--surface2); color: var(--accent); }

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--nav-height) + 40px) 28px 60px;
  max-width: 1200px;
  margin: 0 auto;
  gap: 40px;
  position: relative;
  overflow: hidden;
}

/* Particle Background */
.hero-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.hero-bg::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.12) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  border-radius: 50%;
}

.hero-bg::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(56,189,248,0.1) 0%, transparent 70%);
  bottom: 100px;
  left: -100px;
  border-radius: 50%;
}

/* Particles */
.particles {
  position: absolute;
  inset: 0;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0.5;
  animation: float linear infinite;
}

@keyframes float {
  0%   { transform: translateY(0) rotate(0); opacity: 0; }
  10%  { opacity: 0.5; }
  90%  { opacity: 0.3; }
  100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; }
}

/* Hero Content */
.hero-content {
  flex: 1;
  max-width: 620px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.82rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 20px;
  animation: pulse-border 2s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50%       { box-shadow: 0 0 0 6px transparent; }
}

.hero-name {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.hero-profession {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 20px;
  min-height: 2rem;
}

.typed-text {
  color: var(--accent);
  font-weight: 600;
}

.cursor {
  display: inline-block;
  color: var(--accent-2);
  animation: blink 0.9s step-end infinite;
}

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

.hero-desc {
  font-size: 0.97rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-socials {
  display: flex;
  gap: 12px;
}

.hero-socials a {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--surface2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-muted);
  transition: all var(--transition);
}

.hero-socials a:hover {
  background: var(--accent-grad);
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

/* Hero Image */
.hero-image {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-container {
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.avatar-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  background: var(--accent-grad) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: rotate 12s linear infinite;
}

.avatar-ring.ring-2 {
  inset: 15px;
  border: 1px solid transparent;
  background: linear-gradient(135deg, #38bdf8, #3b82f6) border-box;
  animation: rotate 8s linear infinite reverse;
  opacity: 0.6;
}

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

.avatar-icon {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--surface2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  color: var(--accent);
  border: 3px solid var(--accent);
  box-shadow: 0 0 60px var(--accent-glow);
  position: relative;
  z-index: 2;
  overflow: hidden;
}

.avatar-icon img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  display: block;
}

/* Tech Badges floating */
.tech-badge {
  position: absolute;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--accent);
  box-shadow: var(--shadow);
  z-index: 3;
}

.badge-1 { top: 10px;   right: 20px;  color: #ff2d20; animation: float-badge 4s ease-in-out infinite; }
.badge-2 { top: 50px;   left: 10px;   color: #42b883; animation: float-badge 5s ease-in-out infinite 0.5s; }
.badge-3 { bottom: 30px; left: 20px;  color: #3776ab; animation: float-badge 4.5s ease-in-out infinite 1s; }
.badge-4 { bottom: 10px; right: 30px; color: #f7df1e; animation: float-badge 5.5s ease-in-out infinite 1.5s; }
.badge-5 { top: 50%;    right: -10px; color: #e2e8f0; animation: float-badge 4.2s ease-in-out infinite 0.8s; }

@keyframes float-badge {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-10px); }
}

/* Scroll Indicator */
.scroll-down {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-subtle);
  font-size: 0.78rem;
  letter-spacing: 1px;
  animation: bounce 2s ease-in-out infinite;
}

.scroll-mouse {
  width: 24px;
  height: 36px;
  border: 2px solid var(--text-subtle);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--accent);
  border-radius: 99px;
  animation: scroll-wheel 1.5s ease-in-out infinite;
}

@keyframes scroll-wheel {
  0%   { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(12px); opacity: 0; }
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(-6px); }
}

/* === SECTION COMMON === */
.section {
  padding: 100px 0;
}

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

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  padding: 5px 16px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-line {
  width: 60px;
  height: 4px;
  background: var(--accent-grad);
  border-radius: 99px;
  margin: 0 auto;
}

/* === ABOUT SECTION === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.about-card-visual {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
  box-shadow: var(--shadow);
  position: sticky;
  top: calc(var(--nav-height) + 20px);
}

.about-avatar {
  width: 110px;
  height: 110px;
  background: var(--surface2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: var(--accent);
  margin: 0 auto 24px;
  border: 3px solid transparent;
  background-clip: padding-box;
  box-shadow: 0 0 0 3px var(--accent), 0 0 30px var(--accent-glow);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.stat-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 8px;
  text-align: center;
  transition: transform var(--transition);
}

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

.stat-number {
  display: block;
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  line-height: 1.3;
}

.about-subtitle {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 16px;
}

.about-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.85;
  margin-bottom: 16px;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 28px 0;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.detail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.detail-item i {
  color: var(--accent);
  font-size: 0.9rem;
  margin-top: 3px;
  flex-shrink: 0;
}

.detail-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.detail-value {
  display: block;
  font-size: 0.87rem;
  color: var(--text);
  font-weight: 500;
  margin-top: 2px;
}

.detail-open {
  color: #22c55e !important;
  font-weight: 600;
}

/* Experience Timeline */
.about-experience { margin-top: 8px; }

.exp-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.exp-title i { color: var(--accent); }

.exp-list { position: relative; padding-left: 20px; }

.exp-list::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
}

.exp-item {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  position: relative;
}

.exp-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-grad);
  flex-shrink: 0;
  margin-top: 4px;
  position: absolute;
  left: -19px;
  box-shadow: 0 0 8px var(--accent-glow);
}

.exp-content { padding-left: 2px; }

.exp-role {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.exp-company {
  display: block;
  font-size: 0.83rem;
  color: var(--accent);
  font-weight: 500;
  margin-top: 2px;
}

.exp-period {
  display: block;
  font-size: 0.78rem;
  color: var(--text-subtle);
  margin-top: 2px;
}

/* === SKILLS SECTION === */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: start;
}

.skills-subtitle {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.skills-subtitle i { color: var(--accent); }

/* Skill Bars */
.skill-bar-item { margin-bottom: 22px; }

.skill-bar-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

.skill-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-name i { color: var(--accent-2); width: 18px; text-align: center; }

.skill-percent {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent);
}

.skill-bar-bg {
  height: 8px;
  background: var(--surface2);
  border-radius: 99px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.skill-bar-fill {
  height: 100%;
  width: 0;
  background: var(--accent-grad);
  border-radius: 99px;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.skill-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  from { left: -100%; }
  to   { left: 200%; }
}

/* Skill Icon Cards */
.skills-icons-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-bottom: 28px;
}

.skill-icon-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 8px;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}

.skill-icon-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.skill-icon-card i {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 6px;
}

.skill-icon-card span {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Soft Skills Tags */
.soft-skills-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  transition: all var(--transition);
}

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

/* === PROJECTS SECTION === */
.project-filters {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 8px 22px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent-grad);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 12px 40px var(--accent-glow);
}

.project-card.hide {
  display: none;
}

.project-card-inner {
  padding: 26px;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 18px;
}

.project-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  color: var(--accent);
}

.project-links {
  display: flex;
  gap: 10px;
}

.project-links a {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: all var(--transition);
}

.project-links a:hover {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.project-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}

.project-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 18px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 18px;
}

.ptag {
  display: inline-block;
  padding: 3px 10px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--accent);
  font-family: 'Courier New', monospace;
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.project-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.badge-ai       { background: rgba(56,189,248,0.15);  color: #38bdf8; border: 1px solid rgba(56,189,248,0.3); }
.badge-web      { background: rgba(59,130,246,0.15);  color: #3b82f6; border: 1px solid rgba(59,130,246,0.3); }
.badge-system   { background: rgba(34,197,94,0.15);   color: #22c55e; border: 1px solid rgba(34,197,94,0.3); }
.badge-fullstack { background: rgba(251,191,36,0.15); color: #f59e0b; border: 1px solid rgba(251,191,36,0.3); }

.project-year {
  font-size: 0.78rem;
  color: var(--text-subtle);
  font-weight: 600;
}

.github-cta {
  text-align: center;
  padding: 40px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.github-cta p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

/* === CONTACT SECTION === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 60px;
  align-items: start;
}

.contact-intro {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 28px;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
}

.contact-card:hover {
  transform: translateX(6px);
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.contact-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--accent-grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
}

.contact-card-info { flex: 1; }

.contact-card-label {
  display: block;
  font-size: 0.72rem;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.contact-card-value {
  display: block;
  font-size: 0.88rem;
  color: var(--text);
  font-weight: 500;
  margin-top: 3px;
  word-break: break-all;
}

.contact-arrow {
  color: var(--text-subtle);
  font-size: 0.8rem;
  transition: transform var(--transition), color var(--transition);
}

.contact-card:hover .contact-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

/* Contact Form */
.contact-form-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 8px;
}

.required { color: #ef4444; }

.input-wrap {
  position: relative;
}

.input-wrap i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subtle);
  font-size: 0.85rem;
  pointer-events: none;
}

.textarea-wrap i {
  top: 14px;
  transform: none;
}

.input-wrap input,
.input-wrap textarea {
  width: 100%;
  padding: 12px 14px 12px 40px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 0.9rem;
  transition: all var(--transition);
  resize: vertical;
  outline: none;
}

.input-wrap input::placeholder,
.input-wrap textarea::placeholder {
  color: var(--text-subtle);
}

.input-wrap input:focus,
.input-wrap textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--surface);
}

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

.form-error {
  display: block;
  font-size: 0.78rem;
  color: #ef4444;
  margin-top: 5px;
  min-height: 18px;
}

.form-success {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: rgba(34,197,94,0.1);
  border: 1px solid rgba(34,197,94,0.3);
  border-radius: var(--radius-sm);
  color: #22c55e;
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: 16px;
}

.form-success.show { display: flex; }
.form-success i { font-size: 1.1rem; }

/* === FOOTER === */
.footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-tagline {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin: 14px 0 20px;
  line-height: 1.7;
}

.footer-socials {
  display: flex;
  gap: 10px;
}

.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: all var(--transition);
}

.footer-socials a:hover {
  background: var(--accent-grad);
  color: #fff;
  border-color: transparent;
}

.footer-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.footer-links ul,
.footer-contact ul { display: flex; flex-direction: column; gap: 10px; }

.footer-links a {
  font-size: 0.87rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}

.footer-links a i { font-size: 0.7rem; color: var(--accent); }
.footer-links a:hover { color: var(--accent); }

.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.87rem;
  color: var(--text-muted);
}

.footer-contact i { color: var(--accent); width: 16px; text-align: center; }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-bottom p {
  font-size: 0.83rem;
  color: var(--text-subtle);
}

/* === BACK TO TOP === */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--accent-grad);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  box-shadow: 0 4px 20px var(--accent-glow);
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
  pointer-events: none;
  z-index: 999;
}

.back-to-top.show {
  opacity: 1;
  transform: translateY(0);
  pointer-events: all;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px var(--accent-glow);
}

/* === RESPONSIVE === */

/* Tablet */
@media (max-width: 1024px) {
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid    { grid-template-columns: 1fr; gap: 40px; }
  .about-card-visual { position: static; max-width: 480px; margin: 0 auto; }
  .skills-grid   { grid-template-columns: 1fr; }
}

/* Mobile */
@media (max-width: 768px) {
  .nav-links      { display: none; }
  .hamburger      { display: flex; }

  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: calc(var(--nav-height) + 60px);
    gap: 50px;
    min-height: auto;
    padding-bottom: 80px;
  }

  .hero-content { max-width: 100%; }
  .hero-cta     { justify-content: center; }
  .hero-socials { justify-content: center; }

  .hero-image { order: -1; }
  .avatar-container { width: 220px; height: 220px; }
  .avatar-icon { width: 130px; height: 130px; font-size: 3rem; overflow: hidden; }

  .about-grid   { grid-template-columns: 1fr; }
  .about-details { grid-template-columns: 1fr; }

  .skills-grid  { grid-template-columns: 1fr; gap: 40px; }
  .skills-icons-grid { grid-template-columns: repeat(4, 1fr); }

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

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

  .footer-grid   { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .scroll-down { display: none; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 1.9rem; }
  .section   { padding: 70px 0; }
  .contact-form-wrap { padding: 24px 18px; }
  .skills-icons-grid { grid-template-columns: repeat(3, 1fr); }
  .about-stats { grid-template-columns: repeat(3, 1fr); }
  .stat-number { font-size: 1.3rem; }
  .avatar-container { width: 180px; height: 180px; }
  .avatar-icon { width: 110px; height: 110px; font-size: 2.5rem; overflow: hidden; }
  .badge-1, .badge-2, .badge-3, .badge-4, .badge-5 { width: 36px; height: 36px; font-size: 0.9rem; }
}

/* Light mode adjustments */
[data-theme="light"] .hero-bg::before {
  background: radial-gradient(circle, rgba(59,130,246,0.08) 0%, transparent 70%);
}

[data-theme="light"] .avatar-icon {
  background: #f1f5f9;
  box-shadow: 0 0 40px rgba(59,130,246,0.15);
}

[data-theme="light"] .skill-bar-bg { background: #e2e8f0; }
[data-theme="light"] .tech-badge   { background: #fff; }

/* AOS custom */
[data-aos] { will-change: transform, opacity; }