/* =====================================================
   ApexCloud CSS Framework v1.0
   Built from the ApexCloud brand identity
   ===================================================== */

/* --------------------------------------------------
   1. DESIGN TOKENS
   -------------------------------------------------- */
:root {
  /* Brand Colors */
  --ac-cyan:        #00C6FF;
  --ac-sky:         #29ABE2;
  --ac-blue:        #0072FF;
  --ac-indigo:      #2250C4;
  --ac-navy:        #0D1B4B;
  --ac-navy-light:  #1A2F6E;

  /* Semantic Colors */
  --ac-success:     #16A34A;
  --ac-success-bg:  #DCFCE7;
  --ac-warning:     #D97706;
  --ac-warning-bg:  #FEF3C7;
  --ac-danger:      #DC2626;
  --ac-danger-bg:   #FEE2E2;
  --ac-info:        #0072FF;
  --ac-info-bg:     #EFF6FF;

  /* Neutral Grays */
  --ac-gray-50:   #F8FAFC;
  --ac-gray-100:  #F1F5F9;
  --ac-gray-200:  #E2E8F0;
  --ac-gray-300:  #CBD5E1;
  --ac-gray-400:  #94A3B8;
  --ac-gray-500:  #64748B;
  --ac-gray-600:  #475569;
  --ac-gray-700:  #334155;
  --ac-gray-800:  #1E293B;
  --ac-gray-900:  #0F172A;

  /* Brand Gradient */
  --ac-gradient:        linear-gradient(135deg, #00C6FF 0%, #0072FF 50%, #0D1B4B 100%);
  --ac-gradient-text:   linear-gradient(135deg, #00C6FF 0%, #0072FF 60%);
  --ac-gradient-subtle: linear-gradient(135deg, #EFF6FF 0%, #DBEAFE 100%);

  /* Surfaces */
  --ac-surface:       #FFFFFF;
  --ac-surface-raised:#FFFFFF;
  --ac-surface-inset: #F8FAFC;
  --ac-bg:            #F1F5F9;

  /* Typography */
  --ac-font-sans:  'DM Sans', 'Segoe UI', system-ui, sans-serif;
  --ac-font-mono:  'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes */
  --ac-text-xs:   0.75rem;
  --ac-text-sm:   0.875rem;
  --ac-text-base: 1rem;
  --ac-text-lg:   1.125rem;
  --ac-text-xl:   1.25rem;
  --ac-text-2xl:  1.5rem;
  --ac-text-3xl:  1.875rem;
  --ac-text-4xl:  2.25rem;

  /* Spacing */
  --ac-space-1:  0.25rem;
  --ac-space-2:  0.5rem;
  --ac-space-3:  0.75rem;
  --ac-space-4:  1rem;
  --ac-space-5:  1.25rem;
  --ac-space-6:  1.5rem;
  --ac-space-8:  2rem;
  --ac-space-10: 2.5rem;
  --ac-space-12: 3rem;
  --ac-space-16: 4rem;

  /* Border Radius */
  --ac-radius-sm:   0.25rem;
  --ac-radius-md:   0.5rem;
  --ac-radius-lg:   0.75rem;
  --ac-radius-xl:   1rem;
  --ac-radius-2xl:  1.5rem;
  --ac-radius-full: 9999px;

  /* Shadows */
  --ac-shadow-sm:  0 1px 2px rgba(13,27,75,0.06), 0 1px 3px rgba(13,27,75,0.10);
  --ac-shadow-md:  0 4px 6px rgba(13,27,75,0.07), 0 2px 4px rgba(13,27,75,0.06);
  --ac-shadow-lg:  0 10px 15px rgba(13,27,75,0.08), 0 4px 6px rgba(13,27,75,0.05);
  --ac-shadow-xl:  0 20px 25px rgba(13,27,75,0.10), 0 8px 10px rgba(13,27,75,0.06);
  --ac-shadow-glow:0 0 0 3px rgba(0,114,255,0.25);

  /* Borders */
  --ac-border-color: var(--ac-gray-200);
  --ac-border: 1px solid var(--ac-border-color);

  /* Transitions */
  --ac-transition: 150ms ease;
  --ac-transition-md: 250ms ease;

  /* Z-index */
  --ac-z-dropdown: 1000;
  --ac-z-modal:    1050;
  --ac-z-toast:    1100;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ac-surface:       #1E293B;
    --ac-surface-raised:#273549;
    --ac-surface-inset: #0F172A;
    --ac-bg:            #0F172A;
    --ac-border-color:  #334155;

    --ac-gray-50:  #1E293B;
    --ac-gray-100: #273549;
    --ac-gray-200: #334155;
    --ac-gray-300: #475569;
    --ac-gray-400: #64748B;
    --ac-gray-500: #94A3B8;
    --ac-gray-600: #CBD5E1;
    --ac-gray-700: #E2E8F0;
    --ac-gray-800: #F1F5F9;
    --ac-gray-900: #F8FAFC;

    --ac-info-bg:    rgba(0,114,255,0.15);
    --ac-success-bg: rgba(22,163,74,0.15);
    --ac-warning-bg: rgba(217,119,6,0.15);
    --ac-danger-bg:  rgba(220,38,38,0.15);
  }
}

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

html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  font-family: var(--ac-font-sans);
  font-size: var(--ac-text-base);
  line-height: 1.6;
  color: var(--ac-gray-800);
  background-color: var(--ac-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg { display: block; max-width: 100%; }
a { color: var(--ac-blue); text-decoration: none; transition: color var(--ac-transition); }
a:hover { color: var(--ac-indigo); text-decoration: underline; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
button { cursor: pointer; }

/* --------------------------------------------------
   3. TYPOGRAPHY
   -------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--ac-font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--ac-navy);
  letter-spacing: -0.02em;
}
@media (prefers-color-scheme: dark) {
  h1, h2, h3, h4, h5, h6 { color: var(--ac-gray-900); }
}

h1 { font-size: var(--ac-text-4xl); }
h2 { font-size: var(--ac-text-3xl); }
h3 { font-size: var(--ac-text-2xl); }
h4 { font-size: var(--ac-text-xl); }
h5 { font-size: var(--ac-text-lg); }
h6 { font-size: var(--ac-text-base); }

p { margin-bottom: var(--ac-space-4); color: var(--ac-gray-600); }
p:last-child { margin-bottom: 0; }

strong, b { font-weight: 700; color: var(--ac-gray-800); }
em, i { font-style: italic; }
small, .ac-text-sm { font-size: var(--ac-text-sm); }
code {
  font-family: var(--ac-font-mono);
  font-size: 0.875em;
  background: var(--ac-gray-100);
  color: var(--ac-indigo);
  padding: 0.15em 0.4em;
  border-radius: var(--ac-radius-sm);
}
pre {
  font-family: var(--ac-font-mono);
  font-size: var(--ac-text-sm);
  background: var(--ac-gray-900);
  color: var(--ac-cyan);
  padding: var(--ac-space-4) var(--ac-space-5);
  border-radius: var(--ac-radius-lg);
  overflow-x: auto;
  line-height: 1.7;
}

.ac-lead { font-size: var(--ac-text-xl); color: var(--ac-gray-600); font-weight: 400; }
.ac-caption { font-size: var(--ac-text-xs); color: var(--ac-gray-500); }
.ac-overline { font-size: var(--ac-text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; color: var(--ac-blue); }

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

/* --------------------------------------------------
   4. LAYOUT
   -------------------------------------------------- */
.ac-container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--ac-space-6); }
.ac-container-sm { max-width: 768px; }
.ac-container-lg { max-width: 1400px; }

.ac-section { padding: var(--ac-space-16) 0; }
.ac-section-sm { padding: var(--ac-space-8) 0; }

/* Grid */
.ac-grid { display: grid; gap: var(--ac-space-6); }
.ac-grid-2 { grid-template-columns: repeat(2, 1fr); }
.ac-grid-3 { grid-template-columns: repeat(3, 1fr); }
.ac-grid-4 { grid-template-columns: repeat(4, 1fr); }
.ac-grid-auto { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

@media (max-width: 768px) {
  .ac-grid-2, .ac-grid-3, .ac-grid-4 { grid-template-columns: 1fr; }
}

/* Flex */
.ac-flex { display: flex; }
.ac-flex-center { display: flex; align-items: center; justify-content: center; }
.ac-flex-between { display: flex; align-items: center; justify-content: space-between; }
.ac-flex-col { display: flex; flex-direction: column; }
.ac-gap-2 { gap: var(--ac-space-2); }
.ac-gap-3 { gap: var(--ac-space-3); }
.ac-gap-4 { gap: var(--ac-space-4); }

/* Spacing utilities */
.ac-mt-4  { margin-top: var(--ac-space-4); }
.ac-mt-8  { margin-top: var(--ac-space-8); }
.ac-mb-4  { margin-bottom: var(--ac-space-4); }
.ac-mb-8  { margin-bottom: var(--ac-space-8); }
.ac-p-4   { padding: var(--ac-space-4); }
.ac-p-6   { padding: var(--ac-space-6); }
.ac-p-8   { padding: var(--ac-space-8); }
.ac-px-4  { padding-left: var(--ac-space-4); padding-right: var(--ac-space-4); }
.ac-py-4  { padding-top: var(--ac-space-4); padding-bottom: var(--ac-space-4); }

/* --------------------------------------------------
   5. BUTTONS
   -------------------------------------------------- */
.ac-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--ac-space-2);
  font-family: var(--ac-font-sans);
  font-size: var(--ac-text-sm);
  font-weight: 600;
  line-height: 1;
  padding: 0.625rem 1.25rem;
  border-radius: var(--ac-radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--ac-transition);
  white-space: nowrap;
  user-select: none;
  letter-spacing: 0.01em;
}
.ac-btn:focus-visible { outline: none; box-shadow: var(--ac-shadow-glow); }
.ac-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Primary */
.ac-btn-primary {
  background: var(--ac-gradient);
  color: #fff;
  border-color: transparent;
}
.ac-btn-primary:hover {
  filter: brightness(1.08);
  box-shadow: var(--ac-shadow-md);
  color: #fff;
  text-decoration: none;
}
.ac-btn-primary:active { filter: brightness(0.95); }

/* Secondary */
.ac-btn-secondary {
  background: var(--ac-surface);
  color: var(--ac-navy);
  border-color: var(--ac-gray-300);
}
.ac-btn-secondary:hover {
  background: var(--ac-gray-50);
  border-color: var(--ac-blue);
  color: var(--ac-blue);
  text-decoration: none;
}

/* Ghost */
.ac-btn-ghost {
  background: transparent;
  color: var(--ac-blue);
  border-color: transparent;
}
.ac-btn-ghost:hover { background: var(--ac-info-bg); text-decoration: none; }

/* Outline */
.ac-btn-outline {
  background: transparent;
  color: var(--ac-blue);
  border-color: var(--ac-blue);
}
.ac-btn-outline:hover {
  background: var(--ac-blue);
  color: #fff;
  text-decoration: none;
}

/* Danger */
.ac-btn-danger {
  background: var(--ac-danger);
  color: #fff;
  border-color: transparent;
}
.ac-btn-danger:hover { filter: brightness(1.08); color: #fff; text-decoration: none; }

/* Sizes */
.ac-btn-sm  { font-size: var(--ac-text-xs); padding: 0.4rem 0.875rem; }
.ac-btn-lg  { font-size: var(--ac-text-base); padding: 0.875rem 1.75rem; }
.ac-btn-xl  { font-size: var(--ac-text-lg); padding: 1rem 2.25rem; border-radius: var(--ac-radius-lg); }
.ac-btn-block { width: 100%; }
.ac-btn-icon { padding: 0.625rem; }
.ac-btn-icon.ac-btn-sm { padding: 0.4rem; }

/* --------------------------------------------------
   6. BADGES & TAGS
   -------------------------------------------------- */
.ac-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: var(--ac-text-xs);
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--ac-radius-full);
  letter-spacing: 0.03em;
}

.ac-badge-blue    { background: var(--ac-info-bg);    color: var(--ac-indigo); }
.ac-badge-green   { background: var(--ac-success-bg); color: var(--ac-success); }
.ac-badge-yellow  { background: var(--ac-warning-bg); color: var(--ac-warning); }
.ac-badge-red     { background: var(--ac-danger-bg);  color: var(--ac-danger);  }
.ac-badge-navy    { background: var(--ac-navy);        color: #fff; }
.ac-badge-gradient{ background: var(--ac-gradient);    color: #fff; }
.ac-badge-gray    { background: var(--ac-gray-100);   color: var(--ac-gray-600); }

.ac-badge-dot::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

/* --------------------------------------------------
   7. CARDS
   -------------------------------------------------- */
.ac-card {
  background: var(--ac-surface);
  border-radius: var(--ac-radius-xl);
  border: var(--ac-border);
  box-shadow: var(--ac-shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--ac-transition-md);
}
.ac-card:hover { box-shadow: var(--ac-shadow-md); }

.ac-card-header {
  padding: var(--ac-space-5) var(--ac-space-6);
  border-bottom: var(--ac-border);
}
.ac-card-body { padding: var(--ac-space-6); }
.ac-card-footer {
  padding: var(--ac-space-4) var(--ac-space-6);
  border-top: var(--ac-border);
  background: var(--ac-gray-50);
}

/* Card Variants */
.ac-card-elevated { box-shadow: var(--ac-shadow-lg); }
.ac-card-flat    { box-shadow: none; }

.ac-card-gradient {
  background: var(--ac-gradient);
  color: #fff;
  border: none;
}
.ac-card-gradient h1,
.ac-card-gradient h2,
.ac-card-gradient h3,
.ac-card-gradient h4 { color: #fff; }
.ac-card-gradient p { color: rgba(255,255,255,0.8); }

.ac-card-inset { background: var(--ac-surface-inset); }

/* Interactive card */
.ac-card-clickable {
  cursor: pointer;
  transition: transform var(--ac-transition), box-shadow var(--ac-transition-md);
}
.ac-card-clickable:hover {
  transform: translateY(-2px);
  box-shadow: var(--ac-shadow-lg);
}

/* --------------------------------------------------
   8. FORM ELEMENTS
   -------------------------------------------------- */
.ac-form-group { margin-bottom: var(--ac-space-5); }

.ac-label {
  display: block;
  font-size: var(--ac-text-sm);
  font-weight: 600;
  color: var(--ac-gray-700);
  margin-bottom: var(--ac-space-2);
}
.ac-label-required::after { content: ' *'; color: var(--ac-danger); }

.ac-input,
.ac-select,
.ac-textarea {
  display: block;
  width: 100%;
  font-family: var(--ac-font-sans);
  font-size: var(--ac-text-sm);
  color: var(--ac-gray-800);
  background: var(--ac-surface);
  border: 1.5px solid var(--ac-gray-300);
  border-radius: var(--ac-radius-md);
  padding: 0.6rem 0.875rem;
  line-height: 1.5;
  transition: border-color var(--ac-transition), box-shadow var(--ac-transition);
  outline: none;
}
.ac-input::placeholder { color: var(--ac-gray-400); }
.ac-input:hover { border-color: var(--ac-gray-400); }
.ac-input:focus {
  border-color: var(--ac-blue);
  box-shadow: 0 0 0 3px rgba(0,114,255,0.15);
}
.ac-input-error { border-color: var(--ac-danger); }
.ac-input-error:focus { box-shadow: 0 0 0 3px rgba(220,38,38,0.15); }
.ac-input-success { border-color: var(--ac-success); }

.ac-textarea { min-height: 120px; resize: vertical; }
.ac-select { cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24'%3E%3Cpath fill='%2394A3B8' d='M7 10l5 5 5-5z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.75rem center; padding-right: 2.5rem; }

.ac-form-hint { font-size: var(--ac-text-xs); color: var(--ac-gray-500); margin-top: var(--ac-space-1); }
.ac-form-error { font-size: var(--ac-text-xs); color: var(--ac-danger); margin-top: var(--ac-space-1); }

/* Checkbox & Radio */
.ac-checkbox,
.ac-radio {
  display: inline-flex;
  align-items: center;
  gap: var(--ac-space-2);
  cursor: pointer;
  font-size: var(--ac-text-sm);
  color: var(--ac-gray-700);
}
.ac-checkbox input[type="checkbox"],
.ac-radio input[type="radio"] {
  width: 18px; height: 18px;
  accent-color: var(--ac-blue);
  cursor: pointer;
}

/* Toggle */
.ac-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--ac-space-3);
  cursor: pointer;
  font-size: var(--ac-text-sm);
  color: var(--ac-gray-700);
}
.ac-toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.ac-toggle-track {
  width: 44px; height: 24px;
  background: var(--ac-gray-300);
  border-radius: var(--ac-radius-full);
  transition: background var(--ac-transition);
  flex-shrink: 0;
}
.ac-toggle-thumb {
  position: absolute;
  left: 3px;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  box-shadow: var(--ac-shadow-sm);
  transition: transform var(--ac-transition);
}
.ac-toggle input:checked ~ .ac-toggle-track { background: var(--ac-blue); }
.ac-toggle input:checked ~ .ac-toggle-thumb { transform: translateX(20px); }

/* Range */
.ac-range { width: 100%; accent-color: var(--ac-blue); cursor: pointer; }

/* --------------------------------------------------
   9. ALERTS
   -------------------------------------------------- */
.ac-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--ac-space-3);
  padding: var(--ac-space-4) var(--ac-space-5);
  border-radius: var(--ac-radius-lg);
  border-left: 4px solid;
  font-size: var(--ac-text-sm);
}
.ac-alert-title { font-weight: 700; margin-bottom: var(--ac-space-1); }

.ac-alert-info    { background: var(--ac-info-bg);    color: var(--ac-indigo); border-color: var(--ac-blue); }
.ac-alert-success { background: var(--ac-success-bg); color: var(--ac-success); border-color: var(--ac-success); }
.ac-alert-warning { background: var(--ac-warning-bg); color: var(--ac-warning); border-color: var(--ac-warning); }
.ac-alert-danger  { background: var(--ac-danger-bg);  color: var(--ac-danger);  border-color: var(--ac-danger); }

/* --------------------------------------------------
   10. NAVBAR
   -------------------------------------------------- */
.ac-navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--ac-space-6);
  height: 64px;
  background: var(--ac-surface);
  border-bottom: var(--ac-border);
  box-shadow: var(--ac-shadow-sm);
  position: sticky;
  top: 0;
  z-index: var(--ac-z-dropdown);
}
.ac-navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--ac-space-3);
  font-size: var(--ac-text-lg);
  font-weight: 800;
  color: var(--ac-navy);
  text-decoration: none;
  letter-spacing: -0.03em;
}
.ac-navbar-brand:hover { text-decoration: none; color: var(--ac-navy); }
.ac-navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--ac-space-1);
  list-style: none;
}
.ac-navbar-link {
  font-size: var(--ac-text-sm);
  font-weight: 500;
  color: var(--ac-gray-600);
  padding: 0.4rem 0.75rem;
  border-radius: var(--ac-radius-md);
  transition: all var(--ac-transition);
  cursor: pointer;
}
.ac-navbar-link:hover,
.ac-navbar-link.active { background: var(--ac-info-bg); color: var(--ac-blue); text-decoration: none; }

/* --------------------------------------------------
   11. TABLE
   -------------------------------------------------- */
.ac-table-wrapper { overflow-x: auto; border-radius: var(--ac-radius-xl); border: var(--ac-border); }
.ac-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--ac-text-sm);
}
.ac-table th {
  text-align: left;
  font-weight: 700;
  font-size: var(--ac-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ac-gray-500);
  background: var(--ac-gray-50);
  padding: var(--ac-space-3) var(--ac-space-5);
  border-bottom: var(--ac-border);
  white-space: nowrap;
}
.ac-table td {
  padding: var(--ac-space-4) var(--ac-space-5);
  border-bottom: 1px solid var(--ac-gray-100);
  color: var(--ac-gray-700);
}
.ac-table tr:last-child td { border-bottom: none; }
.ac-table tbody tr:hover td { background: var(--ac-gray-50); }
.ac-table-striped tbody tr:nth-child(even) td { background: var(--ac-gray-50); }

/* --------------------------------------------------
   12. MODAL
   -------------------------------------------------- */
.ac-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13,27,75,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--ac-z-modal);
  padding: var(--ac-space-4);
}
.ac-modal {
  background: var(--ac-surface);
  border-radius: var(--ac-radius-2xl);
  box-shadow: var(--ac-shadow-xl);
  width: 100%;
  max-width: 520px;
  overflow: hidden;
}
.ac-modal-header {
  padding: var(--ac-space-6);
  border-bottom: var(--ac-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.ac-modal-header h4 { margin: 0; }
.ac-modal-body { padding: var(--ac-space-6); }
.ac-modal-footer {
  padding: var(--ac-space-4) var(--ac-space-6);
  border-top: var(--ac-border);
  background: var(--ac-gray-50);
  display: flex;
  justify-content: flex-end;
  gap: var(--ac-space-3);
}

/* --------------------------------------------------
   13. AVATAR & PROGRESS
   -------------------------------------------------- */
.ac-avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-weight: 700;
  background: var(--ac-gradient);
  color: #fff;
  overflow: hidden;
  flex-shrink: 0;
}
.ac-avatar-sm  { width: 32px; height: 32px; font-size: 0.75rem; }
.ac-avatar-md  { width: 40px; height: 40px; font-size: 0.875rem; }
.ac-avatar-lg  { width: 56px; height: 56px; font-size: 1.125rem; }
.ac-avatar-xl  { width: 80px; height: 80px; font-size: 1.5rem; }
.ac-avatar img { width: 100%; height: 100%; object-fit: cover; }

.ac-progress { height: 8px; background: var(--ac-gray-200); border-radius: var(--ac-radius-full); overflow: hidden; }
.ac-progress-bar {
  height: 100%;
  background: var(--ac-gradient);
  border-radius: var(--ac-radius-full);
  transition: width var(--ac-transition-md);
}
.ac-progress-sm { height: 4px; }
.ac-progress-lg { height: 12px; }

/* --------------------------------------------------
   14. STAT CARD
   -------------------------------------------------- */
.ac-stat {
  background: var(--ac-surface);
  border-radius: var(--ac-radius-xl);
  border: var(--ac-border);
  padding: var(--ac-space-6);
}
.ac-stat-label { font-size: var(--ac-text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ac-gray-500); margin-bottom: var(--ac-space-2); }
.ac-stat-value { font-size: var(--ac-text-3xl); font-weight: 800; color: var(--ac-navy); letter-spacing: -0.04em; line-height: 1; margin-bottom: var(--ac-space-2); }
.ac-stat-change { font-size: var(--ac-text-sm); font-weight: 600; }
.ac-stat-up   { color: var(--ac-success); }
.ac-stat-down { color: var(--ac-danger); }

/* --------------------------------------------------
   15. HERO
   -------------------------------------------------- */
.ac-hero {
  background: var(--ac-gradient);
  padding: var(--ac-space-16) var(--ac-space-6);
  text-align: center;
  color: #fff;
}
.ac-hero h1, .ac-hero h2, .ac-hero h3 { color: #fff; }
.ac-hero p { color: rgba(255,255,255,0.8); }

/* --------------------------------------------------
   16. DIVIDER
   -------------------------------------------------- */
.ac-divider {
  border: none;
  border-top: var(--ac-border);
  margin: var(--ac-space-6) 0;
}
.ac-divider-label {
  display: flex;
  align-items: center;
  gap: var(--ac-space-3);
  color: var(--ac-gray-400);
  font-size: var(--ac-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: var(--ac-space-6) 0;
}
.ac-divider-label::before,
.ac-divider-label::after { content: ''; flex: 1; border-top: var(--ac-border); }

/* --------------------------------------------------
   17. SPINNER / SKELETON
   -------------------------------------------------- */
@keyframes ac-spin { to { transform: rotate(360deg); } }
.ac-spinner {
  width: 24px; height: 24px;
  border: 3px solid var(--ac-gray-200);
  border-top-color: var(--ac-blue);
  border-radius: 50%;
  animation: ac-spin 0.7s linear infinite;
  display: inline-block;
}
.ac-spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.ac-spinner-lg { width: 40px; height: 40px; border-width: 4px; }

@keyframes ac-skeleton { 0%,100%{opacity:1} 50%{opacity:.4} }
.ac-skeleton {
  background: var(--ac-gray-200);
  border-radius: var(--ac-radius-md);
  animation: ac-skeleton 1.5s ease-in-out infinite;
}

/* --------------------------------------------------
   18. TOOLTIP
   -------------------------------------------------- */
.ac-tooltip { position: relative; display: inline-flex; }
.ac-tooltip-text {
  visibility: hidden;
  opacity: 0;
  background: var(--ac-gray-900);
  color: #fff;
  font-size: var(--ac-text-xs);
  padding: 0.3rem 0.65rem;
  border-radius: var(--ac-radius-md);
  white-space: nowrap;
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  transition: opacity var(--ac-transition);
  z-index: var(--ac-z-toast);
}
.ac-tooltip:hover .ac-tooltip-text { visibility: visible; opacity: 1; }

/* --------------------------------------------------
   19. UTILITIES
   -------------------------------------------------- */
.ac-text-center { text-align: center; }
.ac-text-right  { text-align: right; }
.ac-text-left   { text-align: left; }

.ac-text-primary   { color: var(--ac-navy); }
.ac-text-secondary { color: var(--ac-gray-500); }
.ac-text-blue      { color: var(--ac-blue); }
.ac-text-success   { color: var(--ac-success); }
.ac-text-warning   { color: var(--ac-warning); }
.ac-text-danger    { color: var(--ac-danger); }
.ac-text-white     { color: #fff; }

.ac-fw-400 { font-weight: 400; }
.ac-fw-600 { font-weight: 600; }
.ac-fw-700 { font-weight: 700; }
.ac-fw-800 { font-weight: 800; }

.ac-rounded-sm   { border-radius: var(--ac-radius-sm); }
.ac-rounded-md   { border-radius: var(--ac-radius-md); }
.ac-rounded-lg   { border-radius: var(--ac-radius-lg); }
.ac-rounded-xl   { border-radius: var(--ac-radius-xl); }
.ac-rounded-full { border-radius: var(--ac-radius-full); }

.ac-shadow-sm { box-shadow: var(--ac-shadow-sm); }
.ac-shadow-md { box-shadow: var(--ac-shadow-md); }
.ac-shadow-lg { box-shadow: var(--ac-shadow-lg); }

.ac-bg-gradient { background: var(--ac-gradient); }
.ac-bg-subtle   { background: var(--ac-gradient-subtle); }
.ac-bg-surface  { background: var(--ac-surface); }

.ac-overflow-hidden { overflow: hidden; }
.ac-w-full  { width: 100%; }
.ac-h-full  { height: 100%; }
.ac-hidden  { display: none; }

/* --------------------------------------------------
   20. ANIMATIONS
   -------------------------------------------------- */
@keyframes ac-fade-in  { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes ac-slide-in { from { opacity: 0; transform: translateX(-12px); } to { opacity: 1; transform: none; } }
@keyframes ac-pop-in   { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }

.ac-animate-fade  { animation: ac-fade-in  0.3s ease both; }
.ac-animate-slide { animation: ac-slide-in 0.3s ease both; }
.ac-animate-pop   { animation: ac-pop-in   0.25s ease both; }