:root {
  --bg-dark: #0a0b10;
  --card-bg: rgba(255, 255, 255, 0.03);
  --card-border: rgba(255, 255, 255, 0.08);
  --accent: #4770FF;
  --accent-glow: rgba(71, 112, 255, 0.3);
  --text-main: #f0f2f5;
  --text-dim: rgba(240, 242, 245, 0.6);
  --glass-blur: blur(16px);
  --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
}

[data-theme="light"] {
  --bg-dark: #f8fafc;
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-border: rgba(0, 0, 0, 0.05);
  --text-main: #1e293b;
  --text-dim: #64748b;
  --accent: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.2);
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
  transition: background-color 0.5s ease;
}

/* ── Unified modal surface (Bootstrap modals) ── */
.ux-modal-surface {
  background: var(--card-bg);
  color: var(--text-main);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.35);
}

.ux-modal-surface .modal-title { color: var(--text-main); }
.ux-modal-surface .form-label { color: var(--text-main); opacity: 0.9; }
.ux-modal-surface .form-control,
.ux-modal-surface .form-select,
.ux-modal-surface textarea {
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--card-border);
  color: var(--text-main);
}
.ux-modal-surface .form-control::placeholder,
.ux-modal-surface textarea::placeholder { color: var(--text-dim); }
.ux-modal-surface .btn-close { filter: invert(1); opacity: 0.7; }
[data-theme="light"] .ux-modal-surface .btn-close { filter: none; }

/* ── Glassy Background ── */
#background-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.6;
}

.glow-orb {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  animation: orbFloat 20s infinite alternate;
}

/* ── Skeleton Loading ── */
.skeleton {
  background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
  background-size: 200% 100%;
  animation: skeletonLoading 1.5s infinite;
  border-radius: 8px;
}

@keyframes skeletonLoading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text { height: 1rem; margin-bottom: 0.5rem; width: 100%; }
.skeleton-title { height: 1.5rem; margin-bottom: 1rem; width: 60%; }
.skeleton-img { aspect-ratio: 16/9; width: 100%; }
.skeleton-circle { border-radius: 50%; width: 50px; height: 50px; }

/* ── Layout ── */
.app-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  gap: 2rem;
  padding: 2rem;
  min-height: 100vh;
}

@media (max-width: 1200px) {
  .app-container { flex-direction: column; padding: 1rem; }
}

/* ── Sidebar (Glass Card) ── */
.sidebar {
  width: 380px;
  flex-shrink: 0;
  height: calc(100vh - 4rem);
  position: sticky;
  top: 2rem;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

@media (max-width: 1200px) {
  .sidebar { width: 100%; height: auto; position: relative; top: 0; }
}

.profile-img-container {
  width: 160px;
  height: 160px;
  margin: 0 auto 1.5rem;
  border-radius: 24px;
  overflow: hidden;
  border: 2px solid var(--accent);
  padding: 8px;
  background: rgba(71, 112, 255, 0.05);
}

.profile-img-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 16px;
}

.sidebar h2 { font-size: 1.8rem; text-align: center; margin-bottom: 0.5rem; font-weight: 800; }
.sidebar p { font-size: 0.95rem; color: var(--text-dim); text-align: center; line-height: 1.6; margin-bottom: 2rem; }

.sidebar-nav { flex: 1; }
.sidebar-nav ul { list-style: none; }
.sidebar-nav li { margin-bottom: 0.5rem; }
.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-nav a:hover {
  background: var(--accent);
  color: #fff;
  transform: translateX(10px);
}

.sidebar-nav a.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 24px var(--accent-glow);
}

/* ── Main Content Area ── */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.content-card {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 3rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  animation: reveal 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes reveal {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-main) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ── Skills Grid ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 1.5rem;
}

.skill-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
}

.skill-item:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  transform: translateY(-5px) scale(1.05);
}

.skill-item img {
  width: 32px;
  height: 32px;
  margin-bottom: 0.5rem;
}

.skill-item span { font-size: 0.8rem; font-weight: 600; display: block; }

/* ── Vibe elements ── */
.vibe-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 100px;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

/* ── Theme Toggle ── */
.theme-toggle {
  position: fixed;
  top: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 100;
  transition: transform 0.3s;
}

.theme-toggle:hover { transform: scale(1.1); }

.lets-talk-icon-btn {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.lets-talk-icon-btn:hover {
  background: var(--accent-glow);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(71, 112, 255, 0.2);
}

.lets-talk-icon-btn i {
  width: 20px;
  height: 20px;
}

/* Success Modal Styles */
.glassy-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glassy-modal.visible {
  opacity: 1;
  visibility: visible;
}

.glassy-modal .modal-content {
  background: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  padding: 3rem;
  border-radius: 32px;
  text-align: center;
  max-width: 400px;
  width: 90%;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.glassy-modal.visible .modal-content {
  transform: translateY(0);
}

.glassy-modal .modal-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-glow);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.glassy-modal h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.glassy-modal p { color: var(--text-dim); margin-bottom: 2rem; line-height: 1.6; }

.glassy-modal button {
  background: var(--accent);
  color: white;
  border: none;
  padding: 1rem 2rem;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s;
}

.glassy-modal button:hover { transform: scale(1.05); }