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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  padding-top: 0;
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.4s ease, color 0.4s ease;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}



/* =========================
    THEME VARIABLES
========================= */
:root {
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

html[data-theme="light"] {
  --text-color: #1a1a2e;
  --text-secondary: #64748b;
  --bg-color: #f0f2f5;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f8fafc;
  --bg-elevated: #ffffff;
  --card-bg: rgba(255, 255, 255, 0.85);
  --card-bg-solid: #ffffff;
  --card-border: rgba(0, 0, 0, 0.06);
  --border-color: #e2e8f0;
  --border-color-subtle: rgba(0, 0, 0, 0.04);
  --button-bg: #4f46e5;
  --button-bg-hover: #4338ca;
  --button-text: #ffffff;
  --link-color: #4f46e5;
  --link-color-hover: #e83c77;
  --muted-text-color: #94a3b8;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --page-gradient: linear-gradient(135deg, #f0f2f5 0%, #e8ecf4 50%, #f5f0f8 100%);
  --navbar-bg: rgba(255, 255, 255, 0.72);
  --navbar-border: rgba(0, 0, 0, 0.06);
  --interactive-item-bg: #ecfdf5;
  --interactive-item-text: #1a1a2e;
  --interactive-detail-bg: #f0fdf4;
  --interactive-item-bg-active: #d1fae5;
  --conceptual-card-bg: #f8fafc;
  --conceptual-card-text: #1e293b;
  --conceptual-card-detail-bg: #ffffff;
  --conceptual-card-bg-active: #eef2ff;
  --badge-bg: #eef2ff;
  --badge-text: #4f46e5;
  --section-divider: #e2e8f0;
  --tag-bg: #f1f5f9;
  --tag-text: #475569;
  --hero-overlay: rgba(255, 255, 255, 0.6);
  --logo-pill-bg: #d1d5db;
}

html[data-theme="dark"] {
  --text-color: #dde1e7;
  --text-secondary: #8a9ab0;
  --bg-color: #0a0a0a;
  --bg-surface: #111111;
  --bg-surface-hover: #1a1a1a;
  --bg-elevated: #141414;
  --card-bg: rgba(18, 18, 18, 0.92);
  --card-bg-solid: #141414;
  --card-border: rgba(255, 255, 255, 0.07);
  --border-color: #242424;
  --border-color-subtle: rgba(255, 255, 255, 0.03);
  --button-bg: #6366f1;
  --button-bg-hover: #818cf8;
  --button-text: #ffffff;
  --link-color: #818cf8;
  --link-color-hover: #f9a8d4;
  --muted-text-color: #4a5568;
  --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --page-gradient: linear-gradient(160deg, #0a0a0a 0%, #0e0e0e 40%, #111116 70%, #0a0a0a 100%);
  --navbar-bg: rgba(8, 8, 8, 0.88);
  --navbar-border: rgba(255, 255, 255, 0.05);
  --interactive-item-bg: #0d1f17;
  --interactive-item-text: #dde1e7;
  --interactive-detail-bg: #0d1f17;
  --interactive-item-bg-active: #122b1e;
  --conceptual-card-bg: #141414;
  --conceptual-card-text: #dde1e7;
  --conceptual-card-detail-bg: #0a0a0a;
  --conceptual-card-bg-active: #1a1a2e;
  --badge-bg: #1a1a2e;
  --badge-text: #a5b4fc;
  --section-divider: #242424;
  --tag-bg: #141414;
  --tag-text: #8a9ab0;
  --hero-overlay: rgba(0, 0, 0, 0.7);
  --logo-pill-bg: #2a2a2a;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--page-gradient);
  z-index: -1;
  transition: background 0.4s ease;
}

.nav-separator {
  width: 1px;
  height: 20px;
  background-color: var(--border-color);
  margin: 0 0.25rem;
  opacity: 0.5;
}

html[data-theme="light"] body.uploadit {
  --page-gradient: linear-gradient(135deg, #e8ecf4 0%, #f0e6f6 30%, #fce4ec 55%, #e0f2f1 80%, #e8f5e9 100%);
}
html[data-theme="dark"] body.uploadit {
  --page-gradient: linear-gradient(135deg, #312e81 0%, #581c87 25%, #831843 50%, #0d9488 75%, #064e3b 100%);
}

/* =========================
    STEP-SPECIFIC BACKGROUNDS
========================= */
body.step-1-active,
body.step-2-active,
body.step-3-active {
  background: none !important;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}
body.step-1-active::before,
body.step-2-active::before,
body.step-3-active::before {
  background: none;
}
body.step-1-active .container,
body.step-2-active .container,
body.step-3-active .container {
  background-color: transparent !important;
}
body.step-1-active[data-theme="light"] { background-image: url("img/step1light.f1988a67b07b.png"); }
body.step-1-active[data-theme="dark"]  { background-image: url("img/step1dark.3420bfd2fe55.png"); }
body.step-2-active[data-theme="light"] { background-image: url("img/step2light.92dcf846ee28.png"); }
body.step-2-active[data-theme="dark"]  { background-image: url("img/step2dark.d76e04eb1aed.png"); }
body.step-3-active[data-theme="light"] { background-image: url("img/step3light.81d87ea51345.png"); }
body.step-3-active[data-theme="dark"]  { background-image: url("img/step3dark.6df6f350a969.png"); }

/* =========================
    CONTAINERS & UTILITIES
========================= */
.container {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  min-height: 100vh;
  color: var(--text-color);
  padding: 2rem 1rem !important;
  max-width: 1200px;
  z-index: 0;
}

.custom-container,
.login-custom-container,
.login-container,
.upload-container,
.login-list {
  display: grid;
  justify-content: center;
  text-align: center;
}

.course-list {
  display: grid;
  justify-content: end;
  min-height: 0px !important;
  align-items: stretch;
  align-content: center;
  text-align: center;
}

.custom-margin-bottom {
  width: 100%;
}

/* =========================
    HOME / LOGIN PAGE
========================= */

/* hero strip */
.home-hero {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
}

.home-hero-logo {
  height: 56px;
  width: auto;
  margin-bottom: 0.75rem;
}

.home-hero-title {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-color);
  margin-bottom: 0.25rem;
}

.home-hero-title span {
  color: var(--link-color);
}

.home-hero-sub {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

/* nav card grid */
.home-nav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  padding: 1.25rem 0 2rem;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

.home-nav-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.4rem;
  padding: 1.5rem 1rem;
  border-radius: var(--radius-lg);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: var(--text-color);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.home-nav-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--link-color);
  color: var(--text-color);
  text-decoration: none;
}

.home-nav-card--accent {
  border-color: var(--link-color);
}

.home-nav-icon {
  font-size: 1.75rem;
  color: var(--link-color);
  margin-bottom: 0.25rem;
}

.home-nav-label {
  font-size: 1rem;
  font-weight: 600;
}

.home-nav-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* login card (unauthenticated) */
.login-page-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: calc(100vh - 120px);
  padding: 1rem;
}

.login-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 400px;
}

.login-card-logo {
  text-align: center;
  margin-bottom: 1.25rem;
}

.login-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.25rem;
}

.login-card-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: 1.5rem;
}

.login-form .form-label {
  font-weight: 500;
  font-size: 0.9rem;
}

.login-card-footer {
  font-size: 0.85rem;
  text-align: center;
  color: var(--text-secondary);
  margin-top: 1.25rem;
  margin-bottom: 0;
}

.login-card-footer a {
  color: var(--link-color);
  text-decoration: none;
  font-weight: 500;
}

.login-card-footer a:hover {
  text-decoration: underline;
}

/* in-page section panel */
.home-section-panel {
  width: 100%;
}

.home-section-panel-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.home-panel-back {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  gap: 0.35rem;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-color);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

.home-panel-back:hover {
  background: var(--bg-surface-hover);
  border-color: var(--link-color);
  color: var(--link-color);
}

.home-panel-title {
  flex: 1;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin: 0;
}

.home-panel-open-link {
  display: inline-flex;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.8rem;
  opacity: 0.6;
  transition: opacity var(--transition-fast), color var(--transition-fast);
  flex-shrink: 0;
}

.home-panel-open-link:hover {
  opacity: 1;
  color: var(--link-color);
}

.home-panel-body {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.home-panel-loading {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* =========================
    SIDEBAR NAVIGATION
========================= */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 260px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  z-index: 1050;
  display: flex;
  flex-direction: column;
  transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

/* ── Header ── */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0.75rem;
  border-bottom: 1px solid var(--border-color-subtle);
  flex-shrink: 0;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none !important;
  color: var(--text-color) !important;
  overflow: hidden;
}

.sidebar-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  object-fit: cover;
}

.sidebar-brand-text {
  font-size: 0.95rem;
  font-weight: 700;
  white-space: nowrap;
  transition: opacity 0.2s ease;
}

.sidebar-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  width: 28px;
  height: 28px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast), transform 0.3s ease;
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--bg-surface-hover);
  color: var(--text-color);
}

.sidebar.collapsed .sidebar-toggle {
  transform: rotate(180deg);
}

/* ── Search ── */
.sb-search {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 10px 4px;
  padding: 6px 10px;
  border-radius: 8px;
  background: var(--bg-surface-hover);
  border: 1px solid transparent;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.sb-search:focus-within {
  border-color: var(--link-color);
  background: var(--bg-surface);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.08);
}

.sb-search-icon {
  font-size: 0.68rem;
  color: var(--text-secondary);
  flex-shrink: 0;
  opacity: 0.5;
}

.sb-search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-color);
  font-family: inherit;
  min-width: 0;
}

.sb-search input::placeholder {
  color: var(--text-secondary);
  opacity: 0.5;
}

.sb-search-kbd {
  font-family: inherit;
  font-size: 0.58rem;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  background: var(--bg-surface);
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
  line-height: 1.4;
}

/* ── Nav ── */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 0.35rem 0.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.sidebar-nav::-webkit-scrollbar {
  width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

/* ── Groups ── */
.sb-group {
  margin-bottom: 2px;
}

.sb-group-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 6px 10px;
  background: none;
  border: none;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.15s ease;
  margin-top: 4px;
}

.sb-group-toggle:hover {
  background: var(--bg-surface-hover);
}

.sb-group-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--dot);
  flex-shrink: 0;
  box-shadow: 0 0 6px var(--dot);
}

.sb-group-label {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  opacity: 0.7;
  white-space: nowrap;
  flex: 1;
  text-align: left;
}

.sb-group-count {
  font-size: 0.56rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-surface-hover);
  border: 1px solid var(--border-color);
  padding: 0 5px;
  border-radius: 6px;
  line-height: 1.5;
  opacity: 0.6;
}

.sb-group-chevron {
  font-size: 0.5rem;
  color: var(--text-secondary);
  opacity: 0.4;
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.sb-group-items:not(.open) + .sb-group-toggle .sb-group-chevron,
.sb-group-toggle[aria-expanded="false"] .sb-group-chevron {
  transform: rotate(-90deg);
}

/* Group items container */
.sb-group-items {
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
  max-height: 0;
  opacity: 0;
}

.sb-group-items.open {
  max-height: 600px;
  opacity: 1;
}

/* ── Links ── */
.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 10px;
  border-radius: 8px;
  color: var(--text-color);
  text-decoration: none !important;
  font-size: 0.78rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease, transform 0.15s ease;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  background: none;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}

.sidebar-link:hover {
  background: var(--bg-surface-hover);
  color: var(--link-color) !important;
  transform: translateX(2px);
}

.sidebar-link.active,
.sidebar-link.sidebar-active {
  background: linear-gradient(135deg, rgba(79,70,229,0.08), rgba(139,92,246,0.06));
  color: var(--link-color) !important;
  font-weight: 600;
}

.sidebar-link.active::before,
.sidebar-link.sidebar-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  bottom: 15%;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, #6366f1, #8b5cf6);
  box-shadow: 0 0 8px rgba(99, 102, 241, 0.4);
}

/* ── Icon wrappers ── */
.sb-icon-wrap {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  flex-shrink: 0;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sidebar-link:hover .sb-icon-wrap {
  transform: scale(1.1);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.sidebar-link.active .sb-icon-wrap,
.sidebar-link.sidebar-active .sb-icon-wrap {
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.sb-icon--blue    { background: rgba(59,130,246,.10); color: #3b82f6; }
.sb-icon--indigo  { background: rgba(99,102,241,.10); color: #6366f1; }
.sb-icon--violet  { background: rgba(139,92,246,.10); color: #8b5cf6; }
.sb-icon--sky     { background: rgba(14,165,233,.10); color: #0ea5e9; }
.sb-icon--emerald { background: rgba(16,185,129,.10); color: #10b981; }
.sb-icon--green   { background: rgba(34,197,94,.10); color: #22c55e; }
.sb-icon--cyan    { background: rgba(6,182,212,.10); color: #06b6d4; }
.sb-icon--teal    { background: rgba(20,184,166,.10); color: #14b8a6; }
.sb-icon--pink    { background: rgba(236,72,153,.10); color: #ec4899; }
.sb-icon--rose    { background: rgba(244,63,94,.10); color: #f43f5e; }
.sb-icon--amber   { background: rgba(245,158,11,.10); color: #f59e0b; }
.sb-icon--orange  { background: rgba(249,115,22,.10); color: #f97316; }
.sb-icon--red     { background: rgba(239,68,68,.10); color: #ef4444; }

[data-theme="dark"] .sb-icon--blue    { background: rgba(59,130,246,.15); }
[data-theme="dark"] .sb-icon--indigo  { background: rgba(99,102,241,.15); }
[data-theme="dark"] .sb-icon--violet  { background: rgba(139,92,246,.15); }
[data-theme="dark"] .sb-icon--sky     { background: rgba(14,165,233,.15); }
[data-theme="dark"] .sb-icon--emerald { background: rgba(16,185,129,.15); }
[data-theme="dark"] .sb-icon--green   { background: rgba(34,197,94,.15); }
[data-theme="dark"] .sb-icon--cyan    { background: rgba(6,182,212,.15); }
[data-theme="dark"] .sb-icon--teal    { background: rgba(20,184,166,.15); }
[data-theme="dark"] .sb-icon--pink    { background: rgba(236,72,153,.15); }
[data-theme="dark"] .sb-icon--rose    { background: rgba(244,63,94,.15); }
[data-theme="dark"] .sb-icon--amber   { background: rgba(245,158,11,.15); }
[data-theme="dark"] .sb-icon--orange  { background: rgba(249,115,22,.15); }
[data-theme="dark"] .sb-icon--red     { background: rgba(239,68,68,.15); }

/* Legacy icon-only links (footer) */
.sidebar-link > i:first-child:not(.sb-icon-wrap i) {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.78rem;
  opacity: 0.55;
  flex-shrink: 0;
  transition: opacity 0.15s ease;
}

.sidebar-link:hover > i:first-child:not(.sb-icon-wrap i),
.sidebar-link.active > i:first-child:not(.sb-icon-wrap i) {
  opacity: 1;
}

/* ── NEW badge ── */
.sb-badge-new {
  font-size: 0.5rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 1px 6px;
  border-radius: 6px;
  background: linear-gradient(135deg, #f43f5e, #ec4899);
  color: #fff;
  line-height: 1.5;
  margin-left: auto;
  flex-shrink: 0;
  animation: sbBadgePulse 2s ease-in-out infinite;
}

@keyframes sbBadgePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

/* ── Description tooltip for expanded mode ── */
.sidebar-link[data-desc]::after {
  content: attr(data-desc);
  display: none;
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  padding: 5px 10px;
  border-radius: 8px;
  font-size: 0.68rem;
  font-weight: 500;
  white-space: nowrap;
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  z-index: 9999;
  pointer-events: none;
}

.sidebar-link[data-desc]:hover::after {
  display: block;
  animation: sbTipIn 0.15s ease both;
}

/* ── Collapsed-mode generic tooltip ── */
.sb-tooltip {
  position: fixed;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.74rem;
  font-weight: 600;
  background: var(--bg-elevated);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
  z-index: 9999;
  pointer-events: none;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
}

.sb-tooltip.visible {
  opacity: 1;
  transform: translateX(0);
}

.sb-tooltip .sb-tip-desc {
  display: block;
  font-size: 0.62rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-top: 1px;
}

@keyframes sbTipIn {
  from { opacity: 0; transform: translateY(-50%) translateX(-4px); }
  to   { opacity: 1; transform: translateY(-50%) translateX(0); }
}

.sidebar-text {
  transition: opacity 0.2s ease;
  overflow: hidden;
}

/* ── Danger link ── */
.sb-link--danger:hover {
  color: #ef4444 !important;
  background: rgba(239, 68, 68, 0.06);
}

/* ── Footer ── */
.sidebar-footer {
  border-top: 1px solid var(--border-color-subtle);
  padding: 0.5rem;
  flex-shrink: 0;
}

.sb-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  margin-bottom: 4px;
  transition: background 0.15s ease;
  cursor: default;
}

.sb-user:hover {
  background: var(--bg-surface-hover);
}

.sb-avatar {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  flex-shrink: 0;
  text-transform: uppercase;
}

.sb-user-info {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: opacity 0.2s ease;
}

.sb-user-name {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sb-user-role {
  font-size: 0.6rem;
  color: var(--text-secondary);
  opacity: 0.6;
}

.sb-footer-actions {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

/* ── Search hidden match ── */
.sidebar-link.sb-hidden {
  display: none;
}

.sb-group.sb-hidden {
  display: none;
}

/* ── Collapsed state ── */
.sidebar.collapsed {
  width: 64px;
}

.sidebar.collapsed .sidebar-brand-text,
.sidebar.collapsed .sidebar-text,
.sidebar.collapsed .sb-group-label,
.sidebar.collapsed .sb-group-count,
.sidebar.collapsed .sb-group-chevron,
.sidebar.collapsed .sb-badge-new,
.sidebar.collapsed .sb-user-info,
.sidebar.collapsed .sb-search-kbd {
  opacity: 0;
  pointer-events: none;
  width: 0;
  overflow: hidden;
}

.sidebar.collapsed .sb-search {
  padding: 6px;
  justify-content: center;
  margin: 8px 6px 4px;
}

.sidebar.collapsed .sb-search input {
  width: 0;
  padding: 0;
}

.sidebar.collapsed .sb-search-icon {
  font-size: 0.78rem;
}

.sidebar.collapsed .sidebar-header {
  justify-content: center;
  padding: 0.85rem 0.5rem;
}

.sidebar.collapsed .sidebar-brand {
  display: none;
}

.sidebar.collapsed .sidebar-link {
  justify-content: center;
  padding: 6px;
  gap: 0;
}

.sidebar.collapsed .sidebar-link::before {
  display: none;
}

/* Hide desc tooltip in collapsed since we use the floating tooltip */
.sidebar.collapsed .sidebar-link[data-desc]:hover::after {
  display: none;
}

.sidebar.collapsed .sb-icon-wrap {
  width: 32px;
  height: 32px;
  font-size: 0.82rem;
}

.sidebar.collapsed .sb-group-toggle {
  justify-content: center;
  padding: 4px;
}

.sidebar.collapsed .sb-group-dot {
  width: 18px;
  height: 2px;
  border-radius: 1px;
  box-shadow: none;
  opacity: 0.3;
}

.sidebar.collapsed .sb-group-items {
  max-height: 600px;
  opacity: 1;
}

.sidebar.collapsed .sb-user {
  justify-content: center;
  padding: 8px;
}

.sidebar.collapsed .sidebar-link > i:first-child:not(.sb-icon-wrap i) {
  width: 32px;
  height: 32px;
  font-size: 0.88rem;
}

/* ── Entrance animation ── */
@keyframes sbSlideIn {
  from { opacity: 0; transform: translateX(-6px); }
  to   { opacity: 1; transform: translateX(0); }
}

.sidebar-link {
  animation: sbSlideIn 0.3s ease both;
}

.sb-group:nth-child(2) .sidebar-link { animation-delay: 0.04s; }
.sb-group:nth-child(3) .sidebar-link { animation-delay: 0.08s; }
.sb-group:nth-child(4) .sidebar-link { animation-delay: 0.12s; }

/* ── Main content ── */
.main-content {
  min-height: 100vh;
  transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.has-sidebar .main-content {
  margin-left: 260px;
}

body.has-sidebar.sidebar-collapsed .main-content {
  margin-left: 64px;
}

/* Guest top bar (unauthenticated) */
.guest-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

.guest-brand {
  text-decoration: none !important;
}

/* Mobile topbar */
.mobile-topbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 1040;
  background: var(--navbar-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--navbar-border);
  padding: 0.5rem 1rem;
  align-items: center;
  gap: 0.75rem;
}

.mobile-hamburger {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.mobile-hamburger:hover {
  background: var(--bg-surface-hover);
}

.mobile-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none !important;
  color: var(--text-color) !important;
  font-weight: 700;
  font-size: 0.9rem;
}

/* Sidebar overlay for mobile */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1049;
  backdrop-filter: blur(2px);
}

.sidebar-overlay.active {
  display: block;
  animation: sidebarFadeIn 0.3s ease forwards;
}

@keyframes sidebarFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Mobile responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-xl);
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  body.has-sidebar .main-content {
    margin-left: 0;
  }

  .mobile-topbar {
    display: flex;
  }

  .sidebar-toggle {
    display: none;
  }
}

/* =========================
    BUTTONS
========================= */
.btn {
  color: var(--button-text);
  border-radius: var(--radius-sm);
  padding: 0.55rem 1.25rem;
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  border: none;
  transition: all var(--transition-fast);
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}
.btn:active {
  transform: translateY(0);
}

.btn-primary,
.btn-primary:hover {
  background: var(--button-bg);
  color: var(--button-text);
}
.btn-primary:hover {
  background: var(--button-bg-hover);
}

.btn-upload {
  width: 100%;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  background: var(--accent-gradient);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
}
.btn-upload:hover {
  box-shadow: var(--shadow-md);
}

#theme-toggle-btn {
  transition: all 0.4s ease;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color) !important;
  font-size: 0.85rem;
  padding: 0.4rem 0.875rem;
}
#theme-toggle-btn:hover {
  background: var(--bg-surface-hover);
  transform: none;
  box-shadow: none;
}
#theme-toggle-btn.rotating {
  transform: rotate(180deg);
}

/* =========================
    TABLES & CARDS
========================= */
.list-group {
  --bs-list-group-color: var(--text-color);
  --bs-list-group-bg: transparent;
  --bs-list-group-border-color: var(--border-color);
  --bs-list-group-border-width: 1px;
  --bs-list-group-border-radius: var(--radius-md);
  --bs-list-group-item-padding-x: 1rem;
  --bs-list-group-item-padding-y: 0.75rem;
  --bs-list-group-action-hover-bg: var(--bg-surface-hover);
  --bs-list-group-action-active-color: var(--text-color);
}

.card,
.table,
.audio-entry,
.list-group-item {
  background-color: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--card-border) !important;
  transition: all var(--transition-base);
}

.card {
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
}

.card-body {
  text-align: left;
  padding: 1.5rem;
}

ul, ol {
  padding: 0 0 0 1.25rem;
}

.card-header {
  padding: 0;
  background-color: transparent;
  border-bottom: 1px solid var(--border-color-subtle);
}

.table thead th {
  text-align: center;
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

/* =========================
    FORMS & INPUTS
========================= */
.form {
  background-color: transparent !important;
}

.form-control {
  border-radius: var(--radius-sm);
  text-align: center;
  background-color: var(--bg-surface) !important;
  color: var(--text-color) !important;
  border: 1px solid var(--border-color);
  padding: 0.625rem 0.875rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-control:focus {
  border-color: var(--button-bg);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
  background-color: var(--bg-surface) !important;
}

/* =========================
    TYPOGRAPHY
========================= */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 400;
  line-height: 1.7;
}

.text-muted {
  color: var(--muted-text-color) !important;
}

.details {
  display: none;
  text-align: left;
}

.updated {
  color: var(--muted-text-color);
}

/* =========================
    LINKS
========================= */
a,
a:visited {
  text-decoration: none !important;
  color: var(--link-color);
  transition: color var(--transition-fast);
}

a:hover,
a:focus {
  color: var(--link-color-hover) !important;
  text-decoration: none !important;
}

/* =========================
    ACCORDIONS
========================= */
.accordion .collapse {
  transition: height 0.35s ease;
}

.accordion {
  overflow-anchor: none;
  background-color: transparent !important;
}

.accordion > .card {
  max-width: 100%;
  margin-bottom: 0.75rem;
  border: 1px solid var(--card-border) !important;
  background-color: var(--card-bg) !important;
  border-radius: var(--radius-lg) !important;
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.accordion > .card:hover {
  box-shadow: var(--shadow-md);
}

.list-group-item {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
}

.tech-logo {
  height: 100px;
  width: auto;
  max-width: 100px;
  object-fit: contain;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast);
}
.tech-logo:hover {
  transform: scale(1.08);
}

.accordion-company-logo {
  height: 80px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.accordion .btn-link {
  color: var(--text-color) !important;
  text-decoration: none !important;
  padding: 1rem 1.25rem;
  transition: background-color var(--transition-fast);
  border-radius: var(--radius-lg);
}
.accordion .btn-link:hover {
  background-color: var(--bg-surface-hover);
}
.accordion .btn-link:hover .accordion-company-logo {
  transform: scale(1.05);
}

.accordion .btn-link > span.me-2,
span.me-2 {
  font-size: 2rem;
}

/* =========================
    TOASTS & OVERLAYS
========================= */
#theme-transition-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: 9999;
}

.flash-light {
  background-color: white;
}
.flash-dark {
  background-color: black;
}

.toast-message {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--bg-elevated);
  color: var(--text-color);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.875rem;
  opacity: 0;
  transition: opacity 0.4s ease, transform 0.4s ease;
  z-index: 3000;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--card-border);
  transform: translateY(-10px);
}

.toast-message.show {
  opacity: 1;
  transform: translateY(0);
}

/* =========================
    PORTFOLIO SHOWCASE - HERO
========================= */
.portfolio-hero {
  text-align: center;
  padding: 3rem 1rem 2rem;
  margin-bottom: 2rem;
  width: 100%;
}

.portfolio-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.portfolio-hero .lead {
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.1rem;
}

@media (max-width: 767px) {
  .portfolio-hero h1 {
    font-size: 1.75rem;
  }
  .portfolio-hero .lead {
    font-size: 1rem;
  }
}

/* =========================
    PORTFOLIO TIMELINE
========================= */
.portfolio-timeline {
  position: relative;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1rem;
}

.portfolio-timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--accent-gradient);
  border-radius: 1px;
  opacity: 0.3;
}

@media (max-width: 767px) {
  .portfolio-timeline::before {
    left: 16px;
  }
}

/* =========================
    PORTFOLIO COMPANY CARD
========================= */
.company-card {
  position: relative;
  margin-bottom: 1.5rem;
  padding-left: 64px;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.company-card.animate-in {
  opacity: 1;
  transform: translateY(0);
}

.company-card-dot {
  position: absolute;
  left: 20px;
  top: 1.75rem;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-gradient);
  border: 3px solid var(--bg-color);
  z-index: 1;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.company-card:hover .company-card-dot {
  transform: scale(1.3);
  box-shadow: 0 0 0 5px rgba(79, 70, 229, 0.25);
}

@media (max-width: 767px) {
  .company-card {
    padding-left: 44px;
  }
  .company-card-dot {
    left: 9px;
    width: 16px;
    height: 16px;
  }
}

.company-card-inner {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.company-card-inner:hover {
  box-shadow: var(--shadow-lg);
  border-color: rgba(79, 70, 229, 0.15);
}

.company-card-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  user-select: none;
}

.company-card-header:hover {
  background-color: var(--bg-surface-hover);
}

.company-card-header .company-logo {
  height: 48px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
  background-color: var(--logo-pill-bg);
  padding: 6px 10px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
}

.company-card-header:hover .company-logo {
  transform: scale(1.05);
}

.company-card-header .company-info {
  flex: 1;
  min-width: 0;
}

.company-card-header .company-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.15rem;
  color: var(--text-color);
}

.company-card-header .company-info .company-role {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
  font-weight: 500;
}

.company-card-header .expand-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-surface-hover);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--transition-base), background-color var(--transition-fast);
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.company-card-header[aria-expanded="true"] .expand-icon,
.expand-icon.rotated {
  transform: rotate(180deg);
  background: var(--badge-bg);
  color: var(--badge-text);
}

.company-card-body {
  padding: 0 1.5rem 1.5rem;
}

.company-card-body h5 {
  display: none; /* Role already in header */
}

.company-card-body h6 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--link-color);
  margin: 1.5rem 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color-subtle);
}

.company-card-body h6:first-child {
  margin-top: 0.5rem;
}

.company-card-body ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.company-card-body ul li {
  position: relative;
  padding: 0.5rem 0 0.5rem 1.5rem;
  font-size: 0.925rem;
  line-height: 1.65;
  color: var(--text-color);
}

.company-card-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--link-color);
  opacity: 0.5;
}

.company-card-body ul li strong {
  color: var(--text-color);
  font-weight: 600;
}

.company-card-body p {
  font-size: 0.925rem;
  line-height: 1.65;
  color: var(--text-color);
}

.company-card-body small {
  color: var(--text-secondary);
}

.company-card-body hr {
  border: none;
  border-top: 1px solid var(--section-divider);
  margin: 1.5rem 0;
}

/* Industry badge */
.industry-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 99px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 0.75rem;
}

/* =========================
    CONCEPTUAL STAGE CARDS (Witheritelaw)
========================= */
.conceptual-stage-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--conceptual-card-bg);
  color: var(--conceptual-card-text);
}

.conceptual-stage-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(79, 70, 229, 0.2);
}

.conceptual-stage-card.active {
  border-left: 3px solid var(--link-color);
  background: var(--conceptual-card-bg-active);
}

.conceptual-stage-card-header {
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 0.95rem;
  color: inherit;
  margin-bottom: 0;
  gap: 0.5rem;
}

.conceptual-stage-card-header .inline-stage-icon {
  height: 32px;
}

html[data-theme="dark"] .inline-stage-icon,
html[data-theme="dark"] .main-title-logo,
html[data-theme="dark"] .button-logo,
html[data-theme="dark"] .accordion-company-logo {
  filter: brightness(0.9) invert(1);
}



.conceptual-stage-logos {
  display: flex;
  align-items: center;
  min-width: 140px;
  margin-right: 0.5rem;
  gap: 0.25rem;
}

.conceptual-stage-detail {
  display: none;
  padding: 0.75rem 0 0 0;
  margin-top: 0.75rem;
  border-top: 1px solid var(--border-color-subtle);
  color: var(--conceptual-card-text);
}

.conceptual-stage-detail p {
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.65;
}

.conceptual-stage-detail strong {
  color: inherit;
}

.flow-arrow {
  text-align: center;
  font-size: 1.25rem;
  color: var(--muted-text-color);
  margin: 0.25rem 0;
  opacity: 0.5;
}

.conceptual-project-flow .conceptual-stage-card {
  border-left: 3px solid transparent;
}
.conceptual-project-flow .conceptual-stage-card:hover {
  border-left-color: var(--link-color);
}

/* =========================
    MISC ELEMENTS
========================= */
.button-logo {
  height: 28px;
  width: auto;
  vertical-align: middle;
  margin-left: 6px;
}

.main-title-logo {
  height: 48px;
  width: auto;
  max-width: 280px;
  vertical-align: middle;
  margin-left: 10px;
}

.mini-app-item {
  background-color: var(--interactive-item-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  color: var(--interactive-item-text);
}

.mini-app-item::before {
  content: '+';
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-weight: bold;
  color: var(--text-secondary);
  font-size: 1.1em;
  transition: transform var(--transition-fast);
}

.mini-app-item.active::before {
  content: '−';
}

.mini-app-item:hover {
  background-color: var(--interactive-item-bg-active);
  border-color: rgba(79, 70, 229, 0.2);
  box-shadow: var(--shadow-xs);
}

.mini-app-item.active {
  background-color: var(--interactive-item-bg-active);
  border-color: var(--link-color);
}

.mini-app-detail {
  display: none;
  padding: 1rem 1.25rem;
  border: 1px solid var(--card-border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  margin-top: -0.5rem;
  margin-bottom: 0.75rem;
  background-color: var(--interactive-detail-bg);
  color: var(--interactive-item-text);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.03);
}

.conceptual-stage-showcase-image {
  height: 40px;
  width: auto;
  max-width: 100%;
  display: block;
  margin: 10px auto;
  border-radius: var(--radius-sm);
}

.inline-stage-icon {
  height: 56px;
  width: auto;
  vertical-align: middle;
  margin-right: 4px;
  object-fit: contain;
}

.stack-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  margin-top: 100px;
}

.portfolio-img {
  object-fit: cover;
  border-radius: var(--radius-md);
}

.progress {
  width: 100%;
  height: 8px;
  border-radius: 99px;
  overflow: hidden;
  background: var(--bg-surface-hover);
}

.progress-bar {
  background: var(--accent-gradient);
  border-radius: 99px;
}

.spinner-border {
  display: none;
  margin-left: 10px;
}

.row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 !important;
}

.ppt-carousel-container {
  width: 100%;
  overflow-x: auto;
  white-space: nowrap;
}

.ppt-slide {
  display: inline-block;
  margin-right: 10px;
}

.ppt-slide img {
  width: 500px;
  height: 262px;
  border-radius: var(--radius-md);
}

.scrolling-image-container {
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  margin-top: 20px;
}

.scrolling-image-wrapper {
  display: inline-block;
  animation: scroll-images 10s linear infinite;
}

.scrolling-image {
  height: 60px;
  margin-right: 10px;
}

@keyframes scroll-images {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

.haze {
  color: var(--text-color) !important;
  margin-bottom: 0 !important;
}

.haze-how {
  color: var(--text-color) !important;
}

/* Styling for rendered notebook content */
.notebook-render {
  /* Add any specific styling for the rendered notebook HTML here */
}

/* Show/hide for conceptual-stage-detail */
.conceptual-stage-detail {
  display: none;
  transition: all 0.3s;
}
.conceptual-stage-detail.show-detail {
  display: block;
}

/* =========================
    SCROLL-TRIGGERED ANIMATIONS
========================= */
.fade-in-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered entrance */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }
.stagger-5 { transition-delay: 0.25s; }

/* =========================
    RESPONSIVE REFINEMENTS
========================= */
@media (max-width: 575px) {
  .container {
    padding: 1rem 0.75rem !important;
  }
  .company-card-header {
    padding: 1rem;
    gap: 0.75rem;
  }
  .company-card-header .company-logo {
    height: 40px;
    max-width: 120px;
  }
  .company-card-header .company-info h3 {
    font-size: 0.95rem;
  }
  .company-card-body {
    padding: 0 1rem 1rem;
  }
  .conceptual-stage-card-header {
    font-size: 0.85rem;
    flex-wrap: wrap;
  }
  .conceptual-stage-logos {
    min-width: auto;
  }
  .inline-stage-icon {
    height: 36px;
  }
}