/* =============================================
   MIN SI THU HTUT — Portfolio v4 (Light+Dark)
   ============================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── LIGHT THEME (default) ── */
:root {
  --bg:         #f8f9ff;
  --bg2:        #eef0fb;
  --card:       rgba(255,255,255,0.85);
  --card-hover: rgba(255,255,255,1);
  --border:     rgba(0,0,0,0.08);
  --border-h:   rgba(108,99,255,0.45);
  --accent:     #6c63ff;
  --accent2:    #5b52e0;
  --green:      #16a34a;
  --cyan:       #0891b2;
  --text:       #111827;
  --muted:      #6b7280;
  --subtle:     #d1d5db;
  --white:      #111827;
  --grad:       linear-gradient(135deg, #6c63ff 0%, #a78bfa 100%);
  --grad2:      linear-gradient(135deg, #0891b2 0%, #6c63ff 100%);
  --font:       'Inter', sans-serif;
  --radius:     16px;
  --radius-sm:  10px;
  --shadow:     0 4px 24px rgba(108,99,255,0.1);
  --shadow-lg:  0 16px 48px rgba(108,99,255,0.15);
  --nav-bg:     rgba(248,249,255,0.92);
  --hero-grid:  rgba(0,0,0,0.04);
  --blob1:      rgba(108,99,255,0.12);
  --blob2:      rgba(8,145,178,0.08);
  --blob3:      rgba(167,139,250,0.07);
  --modal-bg:   #ffffff;
  --loader-bg:  #f8f9ff;
  --phone-bg:   #0e1020;
}

/* ── DARK THEME ── */
[data-theme="dark"] {
  --bg:         #080b12;
  --bg2:        #0c0f18;
  --card:       rgba(255,255,255,0.03);
  --card-hover: rgba(255,255,255,0.06);
  --border:     rgba(255,255,255,0.07);
  --border-h:   rgba(124,111,252,0.5);
  --accent:     #7c6ffc;
  --accent2:    #b8a9ff;
  --green:      #4ade80;
  --cyan:       #22d3ee;
  --text:       #f0f0f8;
  --muted:      #737898;
  --subtle:     #3d4166;
  --white:      #ffffff;
  --shadow:     0 4px 24px rgba(0,0,0,0.3);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.4);
  --nav-bg:     rgba(8,11,18,0.92);
  --hero-grid:  rgba(255,255,255,0.025);
  --blob1:      rgba(124,111,252,0.18);
  --blob2:      rgba(34,211,238,0.1);
  --blob3:      rgba(184,169,255,0.08);
  --modal-bg:   #10131e;
  --loader-bg:  #080b12;
  --phone-bg:   #0e1020;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.5s ease, color 0.5s ease;
}

/* All transitioning elements */
nav, section, footer, .card, .btn, .tag, .ptag, .detail-item,
.skill-cat, .tl-card, .contact-card, .proj-icon-card, .modal-box {
  transition: background 0.5s ease, border-color 0.4s ease, color 0.4s ease, box-shadow 0.4s ease;
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 3px; }

/* ── PAGE LOADER ── */
#page-loader {
  position: fixed; inset: 0;
  background: var(--loader-bg);
  display: flex; align-items: center; justify-content: center;
  z-index: 9999;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}
#page-loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-ring {
  width: 52px; height: 52px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  position: relative;
}
.loader-ring::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 2px solid transparent;
  border-bottom-color: var(--cyan);
  border-radius: 50%;
  animation: spin 1.2s linear infinite reverse;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── SCROLL PROGRESS ── */
#scroll-progress {
  position: fixed; top: 0; left: 0;
  height: 3px; width: 0%;
  background: var(--grad);
  z-index: 300;
  border-radius: 0 2px 2px 0;
  transition: width 0.08s linear;
  box-shadow: 0 0 8px rgba(108,99,255,0.5);
}

/* ── CURSOR GLOW ── */
#cursor-glow {
  position: fixed;
  width: 420px; height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108,99,255,0.07) 0%, transparent 70%);
  pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 0;
  transition: left 0.1s ease, top 0.1s ease;
}
[data-theme="dark"] #cursor-glow {
  background: radial-gradient(circle, rgba(124,111,252,0.07) 0%, transparent 70%);
}

/* ── THEME TOGGLE ── */
.theme-toggle {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
  flex-shrink: 0;
  box-shadow: var(--shadow);
}
.theme-toggle:hover {
  background: var(--accent);
  color: #fff;
  transform: rotate(20deg) scale(1.1);
  border-color: var(--accent);
}

/* ── NAV ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0; z-index: 200;
  padding: 0 40px;
  transition: background 0.4s, border-color 0.4s, backdrop-filter 0.4s;
}
#navbar.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow);
}
.nav-inner {
  max-width: 1160px; margin: 0 auto; height: 68px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.nav-logo {
  font-weight: 800; font-size: 1rem; letter-spacing: 3px;
  background: var(--grad);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  transition: opacity 0.2s;
}
.nav-logo:hover { opacity: 0.75; }
.nav-links { display: flex; gap: 32px; list-style: none; margin-right: auto; margin-left: 48px; }
.nav-links a {
  color: var(--muted); text-decoration: none; font-size: 0.875rem;
  font-weight: 500; letter-spacing: 0.5px; position: relative; transition: color 0.25s;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0;
  width: 0; height: 2px; background: var(--accent);
  border-radius: 1px; transition: width 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--text); }

.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--muted); border-radius: 2px; transition: all 0.3s;
}

/* ── HERO ── */
#hero {
  min-height: 100vh; display: flex; align-items: center;
  position: relative; overflow: hidden; padding: 120px 40px 80px;
}
.bg-blob {
  position: absolute; border-radius: 50%;
  filter: blur(80px); pointer-events: none; z-index: 0;
}
.blob-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--blob1) 0%, transparent 70%);
  top: -100px; right: -100px;
  animation: float1 12s ease-in-out infinite;
}
.blob-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--blob2) 0%, transparent 70%);
  bottom: -100px; left: -100px;
  animation: float2 15s ease-in-out infinite;
}
.blob-3 {
  width: 300px; height: 300px;
  background: radial-gradient(circle, var(--blob3) 0%, transparent 70%);
  top: 40%; left: 40%;
  animation: float3 10s ease-in-out infinite;
}
@keyframes float1 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-40px,30px)} }
@keyframes float2 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(30px,-40px)} }
@keyframes float3 { 0%,100%{transform:translate(0,0)} 50%{transform:translate(-20px,20px)} }

#hero::before {
  content: ''; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--hero-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--hero-grid) 1px, transparent 1px);
  background-size: 60px 60px; z-index: 0;
  animation: gridPan 30s linear infinite;
}
@keyframes gridPan { 0%{background-position:0 0} 100%{background-position:60px 60px} }

/* Particles canvas */
#particles { position: absolute; inset: 0; z-index: 0; pointer-events: none; }

.hero-content {
  max-width: 1160px; margin: 0 auto; width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  gap: 80px; position: relative; z-index: 1;
}
.hero-text { flex: 1; }

.hero-badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(108,99,255,0.08);
  border: 1px solid rgba(108,99,255,0.25);
  color: var(--accent); font-size: 0.8rem; font-weight: 600;
  letter-spacing: 0.5px; padding: 6px 14px; border-radius: 20px; margin-bottom: 24px;
  animation: fadeInDown 0.6s ease 0.3s both;
  transition: background 0.3s, box-shadow 0.3s;
}
.hero-badge:hover { background: rgba(108,99,255,0.14); box-shadow: 0 4px 16px rgba(108,99,255,0.2); }
.hero-badge .dot {
  width: 6px; height: 6px; background: var(--green);
  border-radius: 50%; animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(0.8)} }

.hero-name {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem); font-weight: 900;
  line-height: 1.05; letter-spacing: -1px; margin-bottom: 16px; color: var(--text);
  animation: fadeInUp 0.6s ease 0.5s both;
  transition: color 0.5s;
}
.hero-name .highlight {
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text;
  background-size: 200% 200%; animation: gradShift 4s ease infinite;
  display: inline-block;
}
@keyframes gradShift { 0%,100%{background-position:0% 50%} 50%{background-position:100% 50%} }

.hero-title {
  font-size: clamp(1rem,2vw,1.2rem); font-weight: 400;
  color: var(--muted); min-height: 1.8rem; margin-bottom: 24px;
  animation: fadeInUp 0.6s ease 0.7s both; transition: color 0.5s;
}
.typed-text { color: var(--accent); font-weight: 500; }
.cursor { color: var(--accent); animation: blink 1s step-end infinite; }
@keyframes blink { 50%{opacity:0} }

.hero-desc {
  color: var(--muted); max-width: 500px; font-size: 1rem;
  line-height: 1.8; margin-bottom: 40px;
  animation: fadeInUp 0.6s ease 0.9s both; transition: color 0.5s;
}

.hero-cta {
  display: flex; align-items: center; gap: 16px;
  flex-wrap: wrap; margin-bottom: 48px;
  animation: fadeInUp 0.6s ease 1.1s both;
}
.btn {
  padding: 13px 28px; border-radius: var(--radius-sm); font-weight: 600;
  font-size: 0.9rem; text-decoration: none; display: inline-flex;
  align-items: center; gap: 8px; letter-spacing: 0.2px;
  position: relative; overflow: hidden;
  transition: transform 0.25s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.25s, background 0.4s, border-color 0.4s;
}
.btn::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(255,255,255,0.15); opacity: 0;
  transition: opacity 0.2s; border-radius: inherit;
}
.btn:hover::before { opacity: 1; }
.btn-ripple {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,0.35);
  transform: scale(0); animation: ripple 0.6s linear;
  pointer-events: none;
}
@keyframes ripple { to { transform: scale(4); opacity: 0; } }
.btn-primary {
  background: var(--grad); color: #fff; border: none;
  box-shadow: 0 4px 20px rgba(108,99,255,0.35);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 8px 32px rgba(108,99,255,0.5); }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-3px); box-shadow: var(--shadow); }

.hero-socials {
  display: flex; align-items: center; gap: 8px;
  animation: fadeInUp 0.6s ease 1.3s both;
}
.social-link {
  width: 42px; height: 42px; display: flex; align-items: center; justify-content: center;
  border: 1.5px solid var(--border); border-radius: var(--radius-sm);
  color: var(--muted); text-decoration: none; font-size: 1rem;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
  background: var(--card);
}
.social-link:hover {
  border-color: var(--accent); color: var(--accent);
  background: rgba(108,99,255,0.08);
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 20px rgba(108,99,255,0.2);
}

.hero-image { flex-shrink: 0; position: relative; animation: fadeInRight 0.8s ease 0.5s both; }
.profile-wrap { position: relative; width: 340px; height: 340px; }
.profile-glow {
  position: absolute; inset: -20px; border-radius: 50%;
  background: radial-gradient(circle, rgba(108,99,255,0.18) 0%, transparent 70%);
  animation: glow-pulse 4s ease-in-out infinite;
}
@keyframes glow-pulse { 0%,100%{opacity:0.6;transform:scale(1)} 50%{opacity:1;transform:scale(1.05)} }
.profile-ring {
  position: relative; width: 100%; height: 100%;
  border-radius: 50%; padding: 3px; background: var(--grad);
}
.profile-photo {
  width: 100%; height: 100%; border-radius: 50%; object-fit: cover;
  border: 4px solid var(--bg); display: block; transition: border-color 0.5s;
}
.profile-ring:hover .profile-photo { transform: scale(1.03); transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), border-color 0.5s; }

.float-chip {
  position: absolute; background: var(--card);
  border: 1px solid var(--border); border-radius: 12px;
  padding: 10px 16px; font-size: 0.8rem; font-weight: 600;
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
  backdrop-filter: blur(10px); box-shadow: var(--shadow);
  transition: background 0.5s, border-color 0.4s;
}
.chip-1 { top: 20px; left: -60px; animation: chip-float 6s ease-in-out infinite; }
.chip-2 { bottom: 40px; right: -50px; animation: chip-float 6s ease-in-out infinite 1.5s; }
.chip-3 { bottom: -10px; left: -40px; animation: chip-float 6s ease-in-out infinite 3s; }
@keyframes chip-float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
.chip-accent { color: var(--accent); }
.chip-green  { color: var(--green); }
.chip-cyan   { color: var(--cyan); }

.scroll-hint {
  position: absolute; bottom: 36px; left: 50%; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  z-index: 1; color: var(--muted); font-size: 0.75rem;
  animation: fadeIn 1s ease 2s both;
}
.scroll-mouse {
  width: 22px; height: 36px; border: 2px solid var(--subtle);
  border-radius: 11px; position: relative; transition: border-color 0.4s;
}
.scroll-mouse::after {
  content: ''; position: absolute; top: 5px; left: 50%;
  transform: translateX(-50%); width: 3px; height: 6px;
  background: var(--accent); border-radius: 2px;
  animation: scroll-anim 2s ease-in-out infinite;
}
@keyframes scroll-anim { 0%{top:5px;opacity:1} 100%{top:18px;opacity:0} }

/* ── SHARED SECTION ── */
section { padding: 110px 40px; }
section#skills    { background: var(--bg2); transition: background 0.5s; }
section#experience{ background: var(--bg2); transition: background 0.5s; }
.container { max-width: 1160px; margin: 0 auto; }

.section-header { text-align: center; margin-bottom: 72px; }
.section-label {
  display: inline-block; font-size: 0.75rem; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase; color: var(--accent);
  margin-bottom: 14px; position: relative; transition: color 0.4s;
}
.section-label::before, .section-label::after { content: '—'; margin: 0 8px; opacity: 0.4; }
.section-title {
  font-size: clamp(2rem,3.5vw,2.8rem); font-weight: 800;
  letter-spacing: -0.5px; color: var(--text); margin-bottom: 14px;
  transition: color 0.5s;
}
.section-sub { color: var(--muted); max-width: 480px; margin: 0 auto; font-size: 0.95rem; transition: color 0.4s; }

/* ── ABOUT ── */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
.about-text p { color: var(--muted); margin-bottom: 18px; font-size: 0.975rem; line-height: 1.85; transition: color 0.4s; }
.about-text strong { color: var(--text); font-weight: 600; transition: color 0.4s; }
.about-stats {
  display: flex; margin-top: 40px;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  transition: border-color 0.4s;
}
.stat {
  flex: 1; padding: 20px; text-align: center;
  border-right: 1px solid var(--border); background: var(--card);
  transition: background 0.5s, border-color 0.4s, transform 0.3s;
}
.stat:last-child { border-right: none; }
.stat:hover { background: var(--card-hover); transform: translateY(-2px); }
.stat-num {
  display: block; font-size: 2rem; font-weight: 800;
  background: var(--grad); -webkit-background-clip: text;
  -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.2;
}
.stat-label { font-size: 0.78rem; color: var(--muted); font-weight: 500; transition: color 0.4s; }
.about-details { display: flex; flex-direction: column; gap: 12px; }
.detail-item {
  display: flex; align-items: flex-start; gap: 16px;
  padding: 18px 20px; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.25s, background 0.25s, transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.25s;
}
.detail-item:hover { border-color: var(--border-h); background: var(--card-hover); transform: translateX(6px); box-shadow: var(--shadow); }
.detail-icon {
  width: 38px; height: 38px; display: flex; align-items: center; justify-content: center;
  background: rgba(108,99,255,0.1); border-radius: 8px; flex-shrink: 0;
  transition: background 0.25s, transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.detail-item:hover .detail-icon { background: rgba(108,99,255,0.2); transform: scale(1.15) rotate(-5deg); }
.detail-icon i { font-size: 1rem; background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.detail-label { font-size: 0.72rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); margin-bottom: 2px; transition: color 0.4s; }
.detail-value { font-size: 0.9rem; color: var(--text); font-weight: 500; transition: color 0.4s; }

/* ── SKILLS ── */
.skills-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.skill-cat {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  transition: border-color 0.3s, transform 0.35s cubic-bezier(0.34,1.56,0.64,1), background 0.4s, box-shadow 0.3s;
  position: relative; overflow: hidden;
}
.skill-cat::after {
  content: ''; position: absolute; inset: 0; background: var(--grad);
  opacity: 0; transition: opacity 0.3s; z-index: 0;
}
.skill-cat:hover { border-color: var(--border-h); transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.skill-cat:hover::after { opacity: 0.04; }
.skill-cat-header { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; position: relative; z-index: 1; }
.skill-cat-icon {
  width: 40px; height: 40px; border-radius: 10px; display: flex;
  align-items: center; justify-content: center; font-size: 1rem; flex-shrink: 0;
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.skill-cat:hover .skill-cat-icon { transform: scale(1.2) rotate(-8deg); }
.icon-purple { background: rgba(108,99,255,0.12); color: var(--accent); }
.icon-cyan   { background: rgba(8,145,178,0.12);   color: var(--cyan); }
.icon-green  { background: rgba(22,163,74,0.12);   color: var(--green); }
.icon-pink   { background: rgba(219,39,119,0.1);   color: #db2777; }
.icon-orange { background: rgba(234,88,12,0.1);    color: #ea580c; }
.icon-blue   { background: rgba(37,99,235,0.1);    color: #2563eb; }
[data-theme="dark"] .icon-purple { background: rgba(124,111,252,0.15); color: #b8a9ff; }
[data-theme="dark"] .icon-cyan   { background: rgba(34,211,238,0.12);  color: #22d3ee; }
[data-theme="dark"] .icon-green  { background: rgba(74,222,128,0.12);  color: #4ade80; }
[data-theme="dark"] .icon-pink   { background: rgba(244,114,182,0.12); color: #f472b6; }
[data-theme="dark"] .icon-orange { background: rgba(251,146,60,0.12);  color: #fb923c; }
[data-theme="dark"] .icon-blue   { background: rgba(96,165,250,0.12);  color: #60a5fa; }
.skill-cat-title { font-size: 0.95rem; font-weight: 700; color: var(--text); position: relative; z-index: 1; transition: color 0.4s; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 7px; position: relative; z-index: 1; }
.tag {
  background: rgba(108,99,255,0.06); border: 1px solid rgba(108,99,255,0.15);
  color: var(--muted); border-radius: 6px; padding: 4px 11px;
  font-size: 0.82rem; font-weight: 500; cursor: default;
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
[data-theme="dark"] .tag { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.08); }
.tag:hover { border-color: var(--accent); color: var(--accent); background: rgba(108,99,255,0.1); transform: scale(1.08) translateY(-2px); box-shadow: 0 4px 12px rgba(108,99,255,0.15); }

/* ── PROJECT ICON CARDS ── */
.proj-cards-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
.proj-icon-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 20px; padding: 32px 28px; cursor: pointer;
  display: flex; flex-direction: column; gap: 14px;
  position: relative; overflow: hidden;
  transition: border-color 0.3s, transform 0.35s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.35s, background 0.4s;
}
.proj-icon-card::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 30%, var(--ic-bg, rgba(108,99,255,0.08)) 0%, transparent 70%);
  opacity: 0; transition: opacity 0.4s;
}
.proj-icon-card::after {
  content: ''; position: absolute;
  bottom: 0; left: 0; right: 0; height: 3px;
  background: var(--grad);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1);
}
.proj-icon-card:hover { border-color: var(--border-h); transform: translateY(-10px); box-shadow: var(--shadow-lg); background: var(--card-hover); }
.proj-icon-card:hover::before { opacity: 1; }
.proj-icon-card:hover::after { transform: scaleX(1); }
.pic-icon-wrap {
  width: 60px; height: 60px; border-radius: 16px;
  background: var(--ic-bg, rgba(108,99,255,0.1));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; color: var(--ic, var(--accent));
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s;
}
.proj-icon-card:hover .pic-icon-wrap { transform: scale(1.2) rotate(-10deg); box-shadow: 0 8px 24px rgba(108,99,255,0.25); }
.pic-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--ic, var(--accent));
  transition: color 0.4s;
}
.proj-icon-card h3 { font-size: 1rem; font-weight: 700; color: var(--text); line-height: 1.35; margin: 0; transition: color 0.3s; }
.proj-icon-card:hover h3 { color: var(--ic, var(--accent)); }
.proj-icon-card > p { color: var(--muted); font-size: 0.85rem; line-height: 1.65; flex: 1; margin: 0; transition: color 0.4s; }
.pic-cta {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.82rem; font-weight: 600; color: var(--ic, var(--accent));
  margin-top: 4px; transition: gap 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.proj-icon-card:hover .pic-cta { gap: 14px; }

/* ── PROJECT MODAL ── */
.proj-modal {
  position: fixed; inset: 0; z-index: 500;
  display: flex; align-items: center; justify-content: center;
  padding: 24px; pointer-events: none; opacity: 0;
  transition: opacity 0.35s ease;
}
.proj-modal.open { pointer-events: all; opacity: 1; }
.modal-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); cursor: pointer;
  transition: background 0.4s;
}
[data-theme="light"] .modal-backdrop { background: rgba(0,0,0,0.4); }
.modal-box {
  position: relative; background: var(--modal-bg);
  border: 1px solid var(--border); border-radius: 24px;
  width: 100%; max-width: 900px; max-height: 90vh;
  display: grid; grid-template-columns: 1fr 1fr; overflow: hidden;
  box-shadow: 0 40px 100px rgba(0,0,0,0.25);
  transform: scale(0.9) translateY(24px);
  transition: transform 0.45s cubic-bezier(0.34,1.56,0.64,1), background 0.4s, border-color 0.4s;
}
.proj-modal.open .modal-box { transform: scale(1) translateY(0); }
.modal-close {
  position: absolute; top: 14px; right: 14px;
  width: 36px; height: 36px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: 50%; color: var(--muted); font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 10;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.modal-close:hover { background: #ef4444; border-color: #ef4444; color: #fff; transform: rotate(90deg) scale(1.1); }
.modal-media { overflow: hidden; background: var(--bg); position: relative; }
.modal-media .img-slider { height: 100%; min-height: 380px; }
.modal-single-img { width: 100%; height: 100%; object-fit: contain; object-position: center; background: var(--bg2); display: block; min-height: 380px; transition: background 0.5s; }
.modal-media-phones {
  display: flex !important; align-items: center; justify-content: center;
  background: linear-gradient(135deg, #0e1020 0%, #141830 100%); min-height: 380px;
}
.modal-media-phones .phone-mockups-wrap { position: relative; min-height: unset; padding: 28px 16px; background: transparent; }
.modal-info {
  padding: 40px 36px; display: flex; flex-direction: column;
  gap: 16px; overflow-y: auto; justify-content: center;
  background: var(--modal-bg); transition: background 0.4s;
}
.modal-info h3 { font-size: 1.4rem; font-weight: 800; color: var(--text); line-height: 1.25; transition: color 0.4s; }
.modal-info p { color: var(--muted); font-size: 0.9rem; line-height: 1.75; transition: color 0.4s; }
.modal-info p strong { color: var(--text); font-weight: 600; transition: color 0.4s; }
.modal-info .project-tags { display: flex; flex-wrap: wrap; gap: 7px; }

/* ── IMAGE SLIDER ── */
.img-slider { position: relative; overflow: hidden; background: var(--bg2); height: 440px; }
.img-slider-card { height: 220px; }
.slider-track { display: flex; height: 100%; transition: transform 0.55s cubic-bezier(0.4,0,0.2,1); }
.slide-img { min-width: 100%; width: 100%; height: 100%; object-fit: cover; object-position: center top; display: block; flex-shrink: 0; }
/* Screenshot-based sliders — show full image without cropping */
#slider-billing .slide-img,
#slider-ai .slide-img { object-fit: contain; object-position: center center; background: var(--bg2); }
.slider-dots { position: absolute; bottom: 14px; left: 50%; transform: translateX(-50%); display: flex; gap: 7px; z-index: 5; }
.sdot { width: 7px; height: 7px; background: rgba(0,0,0,0.25); border-radius: 4px; cursor: pointer; transition: background 0.3s, width 0.3s, transform 0.3s; }
[data-theme="dark"] .sdot { background: rgba(255,255,255,0.3); }
.sdot.active { background: var(--accent); width: 20px; transform: scale(1.1); }
.slider-btn {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 36px; height: 36px; background: var(--card);
  border: 1px solid var(--border); border-radius: 50%; color: var(--text);
  font-size: 0.85rem; display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 5; opacity: 0;
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.img-slider:hover .slider-btn { opacity: 1; }
.slider-btn:hover { background: var(--accent); border-color: var(--accent); color: #fff; transform: translateY(-50%) scale(1.15); }
.slider-prev { left: 12px; } .slider-next { right: 12px; }

/* ── PHONE MOCKUPS ── */
.phone-mockups-wrap {
  display: flex !important; align-items: center; justify-content: center;
  padding: 32px 20px; background: var(--phone-bg);
  position: relative; overflow: hidden; min-height: 440px;
}
.phone-mockups-wrap::before {
  content: ''; position: absolute; inset: 0;
  background: radial-gradient(ellipse at 50% 50%, rgba(108,99,255,0.08) 0%, transparent 70%);
}
.phone-mockup {
  width: 135px; height: 285px; border-radius: 24px;
  border: 2.5px solid rgba(255,255,255,0.15); overflow: hidden;
  position: relative; box-shadow: 0 16px 48px rgba(0,0,0,0.5);
  flex-shrink: 0; background: #000;
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.4s, opacity 0.4s;
}
.phone-mockup::before {
  content: ''; position: absolute; top: 8px; left: 50%;
  transform: translateX(-50%); width: 36px; height: 4px;
  background: rgba(255,255,255,0.2); border-radius: 2px; z-index: 2;
}
.phone-mockup img { width: 100%; height: 100%; object-fit: cover; object-position: top; display: block; }
.pm-back  { transform: translateX(30px) rotate(8deg) scale(0.88); z-index: 1; opacity: 0.7; }
.pm-mid   { transform: translateX(0px) rotate(3deg) scale(0.94); z-index: 2; opacity: 0.85; }
.pm-front { transform: translateX(-20px) rotate(-3deg) scale(1); z-index: 3; }
.phone-mockups-wrap:hover .pm-back  { transform: translateX(55px) rotate(10deg) scale(0.9); opacity: 0.8; }
.phone-mockups-wrap:hover .pm-mid   { transform: translateX(0) rotate(3deg) scale(0.97); opacity: 0.92; }
.phone-mockups-wrap:hover .pm-front { transform: translateX(-40px) rotate(-5deg) scale(1.05); box-shadow: 0 24px 64px rgba(108,99,255,0.35); }

/* ── TIMELINE ── */
.timeline { max-width: 860px; margin: 0 auto; position: relative; }
.timeline::before {
  content: ''; position: absolute; left: 19px; top: 8px; bottom: 0;
  width: 2px; background: linear-gradient(to bottom, var(--accent) 0%, rgba(108,99,255,0.15) 100%);
  transition: background 0.4s;
}
.tl-item { display: flex; gap: 36px; margin-bottom: 40px; position: relative; }
.tl-left { flex-shrink: 0; width: 40px; display: flex; flex-direction: column; align-items: center; }
.tl-dot {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--bg2); border: 2px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; z-index: 1;
  transition: transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s, background 0.4s;
}
.tl-item:hover .tl-dot { transform: scale(1.25); box-shadow: 0 0 24px rgba(108,99,255,0.4); }
.tl-dot i { font-size: 0.9rem; color: var(--accent); transition: color 0.4s; }
.tl-dot.edu { border-color: var(--cyan); }
.tl-dot.edu i { color: var(--cyan); }
.tl-item:hover .tl-dot.edu { box-shadow: 0 0 24px rgba(8,145,178,0.35); }
.tl-card {
  flex: 1; background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 30px; margin-bottom: 8px;
  transition: border-color 0.25s, transform 0.3s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s, background 0.4s;
}
.tl-card:hover { border-color: var(--border-h); transform: translateX(8px); box-shadow: var(--shadow); }
.tl-period {
  font-size: 0.75rem; font-weight: 600; color: var(--accent);
  letter-spacing: 0.5px; margin-bottom: 8px;
  display: flex; align-items: center; gap: 6px; transition: color 0.4s;
}
.tl-period::before { content: ''; display: inline-block; width: 16px; height: 1px; background: var(--accent); transition: background 0.4s; }
.tl-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; transition: color 0.4s; }
.tl-company { font-size: 0.875rem; font-weight: 500; color: var(--accent); margin-bottom: 16px; transition: color 0.4s; }
.tl-card ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.tl-card ul li { color: var(--muted); font-size: 0.88rem; line-height: 1.65; display: flex; align-items: flex-start; gap: 10px; transition: color 0.4s; }
.tl-card ul li::before { content: ''; display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); margin-top: 8px; flex-shrink: 0; transition: background 0.4s; }
.tl-card p { color: var(--muted); font-size: 0.88rem; line-height: 1.65; transition: color 0.4s; }
.edu-badges { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 14px; }
.edu-badge {
  font-size: 0.78rem; padding: 3px 10px; border-radius: 5px; font-weight: 500;
  background: rgba(8,145,178,0.08); border: 1px solid rgba(8,145,178,0.2); color: var(--cyan);
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.edu-badge:hover { background: rgba(8,145,178,0.16); transform: scale(1.07) translateY(-2px); box-shadow: 0 4px 12px rgba(8,145,178,0.15); }

/* ── CONTACT ── */
#contact { position: relative; overflow: hidden; }
#contact::before {
  content: ''; position: absolute; top: 50%; left: 50%;
  transform: translate(-50%,-50%); width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(108,99,255,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.contact-inner { max-width: 700px; margin: 0 auto; text-align: center; position: relative; z-index: 1; }
.contact-inner .section-header { margin-bottom: 48px; }
.contact-cards { display: flex; flex-direction: column; gap: 12px; }
.contact-card {
  display: flex; align-items: center; gap: 16px; padding: 20px 24px;
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); text-decoration: none; color: var(--text);
  position: relative; overflow: hidden;
  transition: all 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.contact-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--grad); transform: scaleY(0);
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1); border-radius: 0 2px 2px 0;
}
.contact-card:hover { border-color: var(--border-h); background: var(--card-hover); transform: translateX(10px); box-shadow: var(--shadow); }
.contact-card:hover::before { transform: scaleY(1); }
.contact-card-icon {
  width: 44px; height: 44px; border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
  background: rgba(108,99,255,0.08); color: var(--accent);
  transition: all 0.35s cubic-bezier(0.34,1.56,0.64,1);
}
.contact-card:hover .contact-card-icon { background: var(--accent); color: #fff; transform: scale(1.12) rotate(-8deg); }
.contact-label { font-size: 0.72rem; font-weight: 600; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); margin-bottom: 2px; transition: color 0.4s; }
.contact-value { font-size: 0.95rem; font-weight: 500; color: var(--text); transition: color 0.4s; }
.contact-arrow { margin-left: auto; color: var(--subtle); font-size: 0.9rem; transition: color 0.25s, transform 0.3s cubic-bezier(0.34,1.56,0.64,1); }
.contact-card:hover .contact-arrow { color: var(--accent); transform: translateX(6px); }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border); padding: 28px 40px;
  display: flex; align-items: center; justify-content: space-between;
  color: var(--muted); font-size: 0.82rem;
  background: var(--bg2); transition: background 0.5s, border-color 0.4s;
}
footer .foot-logo { background: var(--grad); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-weight: 800; letter-spacing: 2px; }
footer .foot-links { display: flex; gap: 16px; }
footer .foot-links a {
  color: var(--muted); text-decoration: none; font-size: 1.1rem;
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1); background: var(--card);
}
footer .foot-links a:hover { color: var(--accent); border-color: var(--accent); background: rgba(108,99,255,0.08); transform: translateY(-4px); box-shadow: var(--shadow); }

/* ── PTAG ── */
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.ptag {
  font-size: 0.78rem; font-weight: 500; color: var(--accent);
  background: rgba(108,99,255,0.08); border: 1px solid rgba(108,99,255,0.2);
  border-radius: 5px; padding: 3px 9px;
  transition: all 0.25s cubic-bezier(0.34,1.56,0.64,1);
}
.ptag:hover { background: var(--accent); color: #fff; transform: scale(1.08) translateY(-2px); box-shadow: 0 4px 12px rgba(108,99,255,0.3); }

/* ── REVEAL ANIMATIONS ── */
@keyframes fadeInUp    { from{opacity:0;transform:translateY(30px)}  to{opacity:1;transform:translateY(0)} }
@keyframes fadeInDown  { from{opacity:0;transform:translateY(-20px)} to{opacity:1;transform:translateY(0)} }
@keyframes fadeInLeft  { from{opacity:0;transform:translateX(-30px)} to{opacity:1;transform:translateX(0)} }
@keyframes fadeInRight { from{opacity:0;transform:translateX(30px)}  to{opacity:1;transform:translateX(0)} }
@keyframes fadeIn      { from{opacity:0} to{opacity:1} }
@keyframes scaleIn     { from{opacity:0;transform:scale(0.85)} to{opacity:1;transform:scale(1)} }
@keyframes slideUp     { from{opacity:0;transform:translateY(50px)} to{opacity:1;transform:translateY(0)} }

.reveal, .reveal-left, .reveal-right {
  opacity: 0; transform: translateY(32px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.reveal-left  { transform: translateX(-32px); }
.reveal-right { transform: translateX(32px); }
.reveal.visible, .reveal-left.visible, .reveal-right.visible { opacity: 1; transform: translate(0); }
.delay-1{transition-delay:0.1s} .delay-2{transition-delay:0.2s}
.delay-3{transition-delay:0.3s} .delay-4{transition-delay:0.4s}
.delay-5{transition-delay:0.5s}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .proj-cards-grid { grid-template-columns: repeat(2,1fr); }
  .modal-box { grid-template-columns: 1fr; max-width: 500px; }
  .modal-media .img-slider { min-height: 260px; }
  .modal-single-img { min-height: 260px; }
  .skills-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 860px) {
  section { padding: 80px 24px; }
  #hero { padding: 100px 24px 80px; }
  .hero-content { flex-direction: column-reverse; text-align: center; gap: 50px; }
  .hero-desc { margin: 0 auto 32px; }
  .hero-cta { justify-content: center; }
  .hero-socials { justify-content: center; }
  .profile-wrap { width: 260px; height: 260px; }
  .chip-1,.chip-2,.chip-3 { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  footer { flex-direction: column; gap: 16px; text-align: center; }
  .nav-links { margin-left: 24px; gap: 20px; }
}
@media (max-width: 640px) {
  #navbar { padding: 0 20px; }
  .nav-links { display: none; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: var(--nav-bg); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border); padding: 24px; gap: 22px; z-index: 200; margin: 0; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .skills-grid { grid-template-columns: 1fr; }
  .proj-cards-grid { grid-template-columns: 1fr; }
  .about-stats { flex-direction: row; }
  .tl-item { gap: 20px; }
  #cursor-glow { display: none; }
}

/* ── BACK TO TOP ── */
#back-to-top {
  position: fixed; bottom: 32px; right: 32px; z-index: 300;
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--grad); color: #fff; border: none;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; cursor: pointer;
  box-shadow: 0 8px 28px rgba(108,99,255,0.4);
  opacity: 0; transform: translateY(20px) scale(0.8);
  transition: opacity 0.35s, transform 0.35s cubic-bezier(0.34,1.56,0.64,1), box-shadow 0.3s;
  pointer-events: none;
}
#back-to-top.visible { opacity: 1; transform: translateY(0) scale(1); pointer-events: all; }
#back-to-top:hover { transform: translateY(-5px) scale(1.12); box-shadow: 0 14px 36px rgba(108,99,255,0.55); }
@media (max-width: 640px) { #back-to-top { bottom: 20px; right: 20px; } }

/* ── TOAST ── */
#toast {
  position: fixed; bottom: 100px; left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: var(--text); color: var(--bg);
  padding: 11px 22px; border-radius: var(--radius-sm);
  font-size: 0.85rem; font-weight: 600; letter-spacing: 0.2px;
  opacity: 0; pointer-events: none; z-index: 1000;
  transition: opacity 0.3s, transform 0.3s cubic-bezier(0.34,1.56,0.64,1);
  white-space: nowrap; display: flex; align-items: center; gap: 8px;
  box-shadow: var(--shadow-lg);
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── SIDE NAV DOTS ── */
#side-nav {
  position: fixed; right: 20px; top: 50%; transform: translateY(-50%);
  display: flex; flex-direction: column; gap: 16px; z-index: 150;
}
.sn-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--subtle); display: block; cursor: pointer;
  position: relative; text-decoration: none;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.sn-dot::before {
  content: attr(data-label);
  position: absolute; right: 20px; top: 50%;
  transform: translateY(-50%) translateX(6px);
  font-size: 0.7rem; font-weight: 600; color: var(--text);
  background: var(--card); border: 1px solid var(--border);
  padding: 4px 10px; border-radius: 6px; white-space: nowrap;
  pointer-events: none; opacity: 0;
  transition: opacity 0.2s, transform 0.2s; box-shadow: var(--shadow);
}
.sn-dot:hover::before { opacity: 1; transform: translateY(-50%) translateX(0); }
.sn-dot:hover { background: var(--accent); transform: scale(1.6); }
.sn-dot.active {
  background: var(--accent); transform: scale(1.8);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.2), 0 0 14px rgba(108,99,255,0.35);
}
@media (max-width: 1024px) { #side-nav { display: none; } }

/* ── RESUME BUTTON ── */
.btn-outline-accent {
  background: transparent; color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-outline-accent:hover {
  background: var(--accent); color: #fff;
  transform: translateY(-3px); box-shadow: 0 8px 24px rgba(108,99,255,0.35);
}

/* ── HERO SCROLL FADE ── */
.hero-content { will-change: transform, opacity; }

/* ── RESUME BUTTONS ── */
.resume-btns { display: flex; align-items: center; gap: 6px; }
.btn-resume-view {
  width: 44px; height: 44px; border-radius: var(--radius-sm);
  border: 1.5px solid var(--accent); color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  text-decoration: none; font-size: 0.95rem; background: transparent; flex-shrink: 0;
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.btn-resume-view:hover {
  background: var(--accent); color: #fff;
  transform: translateY(-3px) scale(1.1);
  box-shadow: 0 6px 20px rgba(108,99,255,0.35);
}

/* ── PROJECT FILTER ── */
.proj-filter {
  display: flex; align-items: center; justify-content: center;
  gap: 8px; flex-wrap: wrap; margin-bottom: 40px;
}
.pf-btn {
  padding: 8px 20px; border-radius: 20px;
  background: var(--card); border: 1.5px solid var(--border);
  color: var(--muted); font-size: 0.82rem; font-weight: 600;
  cursor: pointer; letter-spacing: 0.3px; font-family: var(--font);
  transition: all 0.3s cubic-bezier(0.34,1.56,0.64,1);
}
.pf-btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); background: rgba(108,99,255,0.06); }
.pf-btn.active {
  background: var(--grad); color: #fff; border-color: transparent;
  box-shadow: 0 4px 18px rgba(108,99,255,0.35); transform: translateY(-2px);
}

/* ── SKILL LEVEL BAR ── */
.skill-level-bar {
  width: 100%; height: 4px; background: var(--border);
  border-radius: 2px; overflow: visible; margin-bottom: 16px;
  position: relative; z-index: 1;
}
.skill-level-fill {
  height: 100%; width: 0%;
  background: var(--grad); border-radius: 2px;
  transition: width 1.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}
.skill-level-fill::after {
  content: '';
  position: absolute; right: -4px; top: -4px;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent), 0 0 20px rgba(108,99,255,0.4);
  opacity: 0; transition: opacity 0.3s 1s;
}
.skill-level-fill.filled::after { opacity: 1; }

/* ── CURSOR SPARKLE ── */
.spark {
  position: fixed; border-radius: 50%;
  pointer-events: none; z-index: 9998;
  transform: translate(-50%, -50%);
  animation: spark-out 0.72s ease forwards;
}
@keyframes spark-out {
  0%  { opacity: 0.9; transform: translate(-50%, -50%) scale(1); }
  100%{ opacity: 0;   transform: translate(calc(-50% + var(--dx)), calc(-50% + var(--dy))) scale(0); }
}
@media (max-width: 860px) { .spark { display: none; } }

/* ── SHIMMER on highlight ── */
@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}
.hero-name:hover .highlight {
  background: linear-gradient(90deg,
    var(--accent) 0%, #a78bfa 20%, #22d3ee 40%, #fb923c 60%, #a78bfa 80%, var(--accent) 100%);
  background-size: 300% auto;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  animation: shimmer 0.9s linear forwards;
}

/* ── ACHIEVEMENTS ── */
#achievements { background: var(--bg2); transition: background 0.5s; }
.ach-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 20px;
}
.ach-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 26px;
  display: flex; align-items: flex-start; gap: 18px;
  transition: border-color 0.3s, transform 0.35s cubic-bezier(0.34,1.56,0.64,1),
              box-shadow 0.35s, background 0.4s;
  position: relative; overflow: hidden; cursor: default;
}
.ach-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--ac-bg, rgba(124,111,252,0.06)) 0%, transparent 60%);
  opacity: 0; transition: opacity 0.4s;
}
.ach-card:hover { border-color: var(--border-h); transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.ach-card:hover::after { opacity: 1; }
.ach-icon {
  width: 52px; height: 52px; border-radius: 14px; flex-shrink: 0;
  background: var(--ac-bg, rgba(124,111,252,0.12));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem; color: var(--ac, var(--accent));
  transition: transform 0.35s cubic-bezier(0.34,1.56,0.64,1);
  position: relative; z-index: 1;
}
.ach-card:hover .ach-icon { transform: scale(1.18) rotate(-8deg); }
.ach-body { position: relative; z-index: 1; }
.ach-label {
  font-size: 0.68rem; font-weight: 700; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--ac, var(--accent));
  margin-bottom: 4px; transition: color 0.4s;
}
.ach-title {
  font-size: 1rem; font-weight: 700; color: var(--text);
  line-height: 1.3; margin-bottom: 5px; transition: color 0.4s;
}
.ach-sub {
  font-size: 0.82rem; color: var(--muted); line-height: 1.55;
  margin-bottom: 12px; transition: color 0.4s;
}
.ach-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.ach-tags span {
  font-size: 0.72rem; font-weight: 500; padding: 2px 9px;
  border-radius: 4px; background: rgba(108,99,255,0.07);
  border: 1px solid rgba(108,99,255,0.15); color: var(--muted);
  transition: all 0.25s;
}
.ach-card:hover .ach-tags span { border-color: var(--ac, var(--accent)); color: var(--ac, var(--accent)); }
@media (max-width: 1024px) { .ach-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 640px)  { .ach-grid { grid-template-columns: 1fr; } }

/* ── CONTACT FORM ── */
.contact-form {
  margin-top: 36px; display: flex; flex-direction: column; gap: 16px;
  text-align: left;
}
.cf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .cf-row { grid-template-columns: 1fr; } }
.cf-field { display: flex; flex-direction: column; gap: 6px; }
.cf-field label {
  font-size: 0.78rem; font-weight: 600; letter-spacing: 0.5px;
  text-transform: uppercase; color: var(--muted); transition: color 0.4s;
}
.cf-field input, .cf-field textarea {
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 13px 16px;
  color: var(--text); font-family: var(--font); font-size: 0.9rem;
  outline: none; resize: vertical; width: 100%;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.4s, color 0.4s;
}
.cf-field input:focus, .cf-field textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(108,99,255,0.12);
}
.cf-field input.error, .cf-field textarea.error { border-color: #ef4444; box-shadow: 0 0 0 3px rgba(239,68,68,0.1); }
.cf-err { font-size: 0.75rem; color: #ef4444; min-height: 16px; transition: opacity 0.2s; }
.cf-submit { align-self: flex-start; min-width: 170px; justify-content: center; }
.cf-submit.loading { opacity: 0.7; pointer-events: none; }
.cf-success {
  display: flex; align-items: center; gap: 10px;
  color: var(--green); font-size: 0.88rem; font-weight: 600;
  background: rgba(22,163,74,0.08); border: 1px solid rgba(22,163,74,0.2);
  border-radius: var(--radius-sm); padding: 12px 18px;
  animation: fadeInUp 0.4s ease;
}
.cf-success.hidden { display: none; }

/* ── RESUME MODAL ── */
.resume-modal {
  position: fixed; inset: 0; z-index: 600;
  display: flex; align-items: center; justify-content: center;
  padding: 16px; pointer-events: none; opacity: 0;
  transition: opacity 0.35s ease;
}
.resume-modal.open { pointer-events: all; opacity: 1; }
.resume-modal-bd {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.75); backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px); cursor: pointer;
}
.resume-modal-box {
  position: relative; width: 100%; max-width: 860px; height: 90vh;
  background: var(--modal-bg); border: 1px solid var(--border);
  border-radius: 20px; overflow: hidden; display: flex; flex-direction: column;
  transform: scale(0.92) translateY(24px);
  transition: transform 0.45s cubic-bezier(0.34,1.56,0.64,1), background 0.4s;
  box-shadow: 0 40px 100px rgba(0,0,0,0.4);
}
.resume-modal.open .resume-modal-box { transform: scale(1) translateY(0); }
.resume-modal-hd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px; border-bottom: 1px solid var(--border);
  background: var(--bg2); font-size: 0.88rem; font-weight: 600;
  color: var(--muted); gap: 12px; transition: background 0.4s, border-color 0.4s;
}
.resume-modal-hd i { color: #ef4444; margin-right: 6px; }
#resume-iframe {
  flex: 1; border: none; width: 100%;
  background: var(--bg);
}

/* ── KEYBOARD SHORTCUTS ── */
#kb-hint {
  position: fixed; bottom: 32px; left: 32px; z-index: 200;
  font-size: 0.72rem; color: var(--muted);
  background: var(--card); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px;
  opacity: 0; animation: fadeIn 1s ease 4s forwards;
  transition: opacity 0.3s, background 0.4s; cursor: default;
}
#kb-hint kbd {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 4px; padding: 1px 6px; font-size: 0.7rem;
  font-family: monospace; color: var(--accent);
}
#kb-hint:hover { opacity: 0.3 !important; }
@media (max-width: 860px) { #kb-hint { display: none; } }

#kb-overlay {
  position: fixed; inset: 0; z-index: 700;
  display: flex; align-items: center; justify-content: center;
  pointer-events: none; opacity: 0;
  transition: opacity 0.3s ease;
}
#kb-overlay.open { pointer-events: all; opacity: 1; }
.kb-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,0.6); backdrop-filter: blur(12px);
  cursor: pointer;
}
.kb-box {
  position: relative; background: var(--modal-bg);
  border: 1px solid var(--border); border-radius: 20px;
  width: 100%; max-width: 420px; padding: 0;
  overflow: hidden;
  transform: scale(0.9) translateY(20px);
  transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1), background 0.4s;
  box-shadow: var(--shadow-lg);
}
#kb-overlay.open .kb-box { transform: scale(1) translateY(0); }
.kb-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 24px; border-bottom: 1px solid var(--border);
  font-weight: 700; font-size: 0.95rem; color: var(--text);
  background: var(--bg2); transition: background 0.4s, border-color 0.4s;
}
.kb-list { padding: 12px 16px; display: flex; flex-direction: column; gap: 2px; }
.kb-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px; font-size: 0.85rem;
  color: var(--muted); transition: background 0.2s;
}
.kb-row:hover { background: var(--card); }
.kb-row span { flex: 1; }
.kb-row kbd {
  background: var(--bg2); border: 1px solid var(--border);
  border-bottom-width: 2px; border-radius: 6px;
  padding: 3px 8px; font-size: 0.78rem; font-family: monospace;
  color: var(--accent); font-weight: 700; white-space: nowrap;
  transition: background 0.4s, border-color 0.4s;
}

/* ── TIMELINE DRAW ANIMATION ── */
.timeline::before {
  transform-origin: top;
  transform: scaleY(0);
  transition: transform 1.8s cubic-bezier(0.4,0,0.2,1);
}
.timeline.tl-drawn::before { transform: scaleY(1); }

/* ── NEON GLOW BORDER on cards ── */
@keyframes neon-border {
  0%,100% { box-shadow: 0 0 0 0 rgba(108,99,255,0); }
  50%      { box-shadow: 0 0 20px 2px rgba(108,99,255,0.25), var(--shadow-lg); }
}
.proj-icon-card:hover { animation: neon-border 2s ease-in-out infinite; }
.ach-card:hover       { animation: neon-border 2s ease-in-out infinite; }

/* ── ABOUT DETAIL CARD 3D TILT ── */
.detail-item { transform-style: preserve-3d; will-change: transform; }