/* ==========================================================================
   components.css — Navbar, buttons, cards, badges, forms, modal, tabs, footer
   ========================================================================== */

/* ---- Scroll progress bar -------------------------------------------------- */
.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  height: 3px;
  width: 0%;
  background: var(--gradient);
  z-index: 200;
  transition: width 0.1s linear;
}

/* ---- Navbar --------------------------------------------------------------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}
.nav .container { display: flex; align-items: center; justify-content: space-between; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.02em;
}
.brand .logo {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  border-radius: 10px;
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 6px 18px rgba(17, 100, 102, 0.5);
  animation: float 5s var(--ease) infinite;
}

.nav-links { display: flex; align-items: center; gap: 0.35rem; }
.nav-links a {
  position: relative;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0.9rem; right: 0.9rem; bottom: 0.32rem;
  height: 2px;
  background: var(--gradient);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }
.nav-links a.active { color: var(--text); }

.nav-actions { display: flex; align-items: center; gap: 0.6rem; }

.icon-btn {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  transition: transform 0.25s var(--ease-back), background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.icon-btn:hover { background: var(--surface-strong); border-color: var(--border-strong); transform: translateY(-2px); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 20px; height: 20px; }
.theme-toggle .sun { display: none; }
[data-theme="light"] .theme-toggle .sun { display: block; }
[data-theme="light"] .theme-toggle .moon { display: none; }

.nav-toggle { display: none; }

/* LinkedIn action button accent */
.icon-btn.linkedin:hover {
  color: #0a66c2;
  border-color: color-mix(in srgb, #0a66c2 55%, transparent);
}

/* ---- Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform 0.25s var(--ease-back), box-shadow 0.3s var(--ease),
    background 0.3s var(--ease), border-color 0.3s var(--ease);
  will-change: transform;
}
.btn svg { width: 18px; height: 18px; }
.btn:active { transform: scale(0.96); }

.btn-primary {
  background: var(--gradient);
  color: #fff;
  background-size: 180% 180%;
  box-shadow: 0 10px 28px rgba(17, 100, 102, 0.42);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(17, 100, 102, 0.58);
  animation: gradientShift 3s var(--ease) infinite;
}

.btn-ghost {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { background: var(--surface-strong); border-color: var(--border-strong); transform: translateY(-2px); }

.btn-danger { background: color-mix(in srgb, var(--danger) 16%, transparent); color: #ffb4b4; border-color: color-mix(in srgb, var(--danger) 40%, transparent); }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 26%, transparent); }

.btn-sm { padding: 0.5rem 0.9rem; font-size: 0.85rem; }
.btn-block { width: 100%; justify-content: center; }

/* ---- Badges / chips ------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.32rem 0.75rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--brand-3);
  border: 1px solid color-mix(in srgb, var(--brand-3) 30%, transparent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.badge.ppt { color: #ff9d6c; background: rgba(255, 157, 108, 0.12); border-color: rgba(255, 157, 108, 0.35); }
.badge.video { color: #7dd3fc; background: rgba(125, 211, 252, 0.12); border-color: rgba(125, 211, 252, 0.35); }
.badge.pdf { color: #fca5a5; background: rgba(252, 165, 165, 0.12); border-color: rgba(252, 165, 165, 0.35); }
.badge.article { color: #c4b5fd; background: rgba(196, 181, 253, 0.12); border-color: rgba(196, 181, 253, 0.35); }

.chip {
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  transition: all 0.25s var(--ease);
}
.chip:hover { color: var(--text); border-color: var(--border-strong); }
.chip.active { background: var(--gradient); color: #fff; border-color: transparent; }

/* ---- Cards ---------------------------------------------------------------- */
.card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  overflow: hidden;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.35s var(--ease);
  pointer-events: none;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.card:hover::before { opacity: 1; }

.feature-card { text-align: left; }
.feature-icon {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  border-radius: 16px;
  background: var(--accent-soft);
  color: var(--brand-2);
  margin-bottom: 1.1rem;
  transition: transform 0.4s var(--ease-back);
}
.feature-card:hover .feature-icon { transform: rotate(-8deg) scale(1.08); }
.feature-card h3 { margin-bottom: 0.5rem; }

/* Article/media card */
.post-card { display: flex; flex-direction: column; padding: 0; cursor: pointer; }
.post-thumb {
  aspect-ratio: 16 / 9;
  background: var(--gradient);
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  color: #fff;
}
.post-thumb .thumb-icon { width: 56px; height: 56px; opacity: 0.9; }
.post-thumb::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.25), transparent 60%);
}
.post-thumb.type-video { background: linear-gradient(135deg, #0ea5e9, #2563eb); }
.post-thumb.type-ppt { background: linear-gradient(135deg, #f97316, #db2777); }
.post-thumb.type-pdf { background: linear-gradient(135deg, #ef4444, #b91c1c); }
.post-thumb.type-article { background: var(--gradient); }
.post-body { padding: 1.3rem 1.4rem 1.5rem; display: flex; flex-direction: column; gap: 0.7rem; flex: 1; }
.post-body h3 { font-size: 1.2rem; }
.post-meta { display: flex; align-items: center; gap: 0.8rem; font-size: 0.8rem; color: var(--text-dim); margin-top: auto; }
.post-excerpt { color: var(--text-muted); font-size: 0.92rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ---- Forms ---------------------------------------------------------------- */
.field { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.2rem; }
.field label { font-weight: 600; font-size: 0.9rem; color: var(--text); }
.field .hint { font-size: 0.8rem; color: var(--text-dim); }

.input, .textarea, .select {
  width: 100%;
  padding: 0.8rem 1rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}
.input:focus, .textarea:focus, .select:focus {
  outline: none;
  border-color: var(--brand-2);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.textarea { resize: vertical; min-height: 140px; font-family: var(--font-mono); font-size: 0.9rem; line-height: 1.6; }

/* ---- Dropzone ------------------------------------------------------------- */
.dropzone {
  position: relative;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 6vw, 3.5rem);
  text-align: center;
  background: var(--surface);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), transform 0.3s var(--ease);
  cursor: pointer;
}
.dropzone:hover { border-color: var(--brand-2); background: var(--accent-soft); }
.dropzone.dragover {
  border-color: var(--brand-3);
  background: var(--accent-soft);
  transform: scale(1.01);
  box-shadow: var(--shadow-glow);
}
.dropzone .dz-icon {
  width: 68px; height: 68px;
  margin: 0 auto 1rem;
  display: grid; place-items: center;
  border-radius: 20px;
  background: var(--gradient);
  color: #fff;
  animation: float 4s var(--ease) infinite;
}
.dropzone h3 { margin-bottom: 0.4rem; }
.dropzone .dz-formats { margin-top: 1rem; display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; }

/* ---- Tabs ----------------------------------------------------------------- */
.tabs {
  display: inline-flex;
  gap: 0.3rem;
  padding: 0.35rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  margin-bottom: 2rem;
}
.tab {
  padding: 0.6rem 1.3rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.25s var(--ease), background 0.25s var(--ease);
}
.tab.active { background: var(--gradient); color: #fff; box-shadow: 0 8px 20px rgba(17, 100, 102, 0.42); }
.tab:not(.active):hover { color: var(--text); background: var(--surface); }

.tab-panel { animation: fadeInUp 0.5s var(--ease) both; }

/* ---- Modal ---------------------------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: 1.2rem;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s var(--ease), visibility 0.3s;
}
.modal.open { opacity: 1; visibility: visible; }
.modal-box {
  width: min(920px, 100%);
  max-height: 88vh;
  overflow: auto;
  background: var(--bg-elev);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transform: translateY(24px) scale(0.98);
  transition: transform 0.4s var(--ease-back);
}
.modal.open .modal-box { transform: translateY(0) scale(1); }
.modal-head {
  position: sticky; top: 0;
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.modal-body { padding: 1.5rem; }
.modal-body .preview-frame { width: 100%; aspect-ratio: 16 / 9; border: 0; border-radius: var(--radius); background: #000; }
.modal-body video { width: 100%; border-radius: var(--radius); background: #000; }

/* Wide modal + full slide viewer for presentations */
.modal-box.wide { width: min(1180px, 96vw); }
.ppt-embed {
  width: 100%;
  height: 76vh;
  min-height: 420px;
  border: 0;
  border-radius: var(--radius);
  background: #000;
}
.req-form {
  margin-top: 1rem;
  padding: 1.1rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.req-form .field:last-of-type { margin-bottom: 1rem; }

/* ---- Toast ---------------------------------------------------------------- */
.toast-wrap {
  position: fixed;
  bottom: 1.5rem; right: 1.5rem;
  z-index: 400;
  display: flex; flex-direction: column; gap: 0.7rem;
}
.toast {
  display: flex; align-items: center; gap: 0.7rem;
  padding: 0.85rem 1.1rem;
  background: var(--bg-elev-2);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--success);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 0.9rem; font-weight: 600;
  animation: slideInRight 0.4s var(--ease-back) both;
}
.toast.error { border-left-color: var(--danger); }
.toast.leaving { animation: slideOutRight 0.35s var(--ease) forwards; }

/* ---- Empty state ---------------------------------------------------------- */
.empty {
  text-align: center;
  padding: clamp(2.5rem, 8vw, 4.5rem);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
}
.empty .empty-icon {
  width: 80px; height: 80px; margin: 0 auto 1.2rem;
  display: grid; place-items: center;
  border-radius: 24px;
  background: var(--accent-soft);
  color: var(--brand-2);
  animation: pulse 3s var(--ease) infinite;
}

/* ---- Footer --------------------------------------------------------------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding-block: 3rem 2rem;
}
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; margin-bottom: 2.5rem; }
.footer h4 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-dim); margin-bottom: 1rem; }
.footer a { color: var(--text-muted); display: block; padding: 0.28rem 0; transition: color 0.2s var(--ease), transform 0.2s var(--ease); }
.footer a:hover { color: var(--text); transform: translateX(4px); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 1.6rem; border-top: 1px solid var(--border); color: var(--text-dim); font-size: 0.85rem; flex-wrap: wrap; gap: 1rem; }

@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-toggle { display: grid; }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.6rem;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-140%);
    transition: transform 0.4s var(--ease);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { padding: 0.85rem 1rem; }
  .nav-links a::after { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .brand { font-size: 1rem; }
  .brand .logo { width: 30px; height: 30px; }
  .nav-actions { gap: 0.4rem; }
  .nav-actions .btn-primary { display: none; }
}