/* ═══════════════════════════════════════════════════════════
   PortfolioOS — "Invisible Power" Design System
   Version: 1.0 | Domain: portfolio.sy
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ── CSS Custom Properties (Design Tokens) ── */
:root {
  /* Brand Palette — Blue */
  --primary: #2563eb;
  --primary-container: #1d4ed8;
  --on-primary: #ffffff;
  --secondary: #6366f1;
  --secondary-container: #4f46e5;
  --tertiary: #f59e0b;
  --tertiary-container: #d97706;

  /* Surface Hierarchy — Light White */
  --surface: #ffffff;
  --surface-dim: #f8fafc;
  --surface-bright: #ffffff;
  --surface-container-lowest: #f1f5f9;
  --surface-container-low: #f8fafc;
  --surface-container: #f1f5f9;
  --surface-container-high: #e8eef6;
  --surface-container-highest: #dde5ef;
  --surface-variant: #e2e8f0;

  /* On-Surface */
  --on-surface: #0f172a;
  --on-surface-variant: #64748b;
  --on-background: #0f172a;
  --inverse-surface: #1e293b;
  --inverse-on-surface: #f1f5f9;

  /* Outline */
  --outline: #94a3b8;
  --outline-variant: #cbd5e1;

  /* Error */
  --error: #ef4444;
  --error-container: #fef2f2;
  --on-error: #ffffff;

  /* Functional */
  --success: #10b981;
  --warning: #f59e0b;
  --info: #3b82f6;

  /* Typography */
  --font-headline: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing (4px base) */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 32px;
  --space-xl: 64px;
  --space-2xl: 128px;

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

  /* Shadows (Ambient) */
  --shadow-ambient: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-primary: 0 8px 24px rgba(37,99,235,0.2);
  --shadow-elevated: 0 20px 48px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-editorial: 700ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Global Reset ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--surface);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection {
  background: rgba(37, 99, 235, 0.2);
  color: var(--on-surface);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  color: inherit;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  outline: none;
}

ul, ol {
  list-style: none;
}

/* ── Typography Scale ── */
.display-lg {
  font-family: var(--font-headline);
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 0.95;
}

.display-md {
  font-family: var(--font-headline);
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.0;
}

.headline-lg {
  font-family: var(--font-headline);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.headline-md {
  font-family: var(--font-headline);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.title-lg {
  font-family: var(--font-headline);
  font-size: 1.375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.title-md {
  font-family: var(--font-headline);
  font-size: 1.125rem;
  font-weight: 500;
}

.body-lg {
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
}

.body-md {
  font-size: 0.875rem;
  font-weight: 400;
  line-height: 1.5;
}

.body-sm {
  font-size: 0.8125rem;
  font-weight: 400;
}

.label-lg {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.label-sm {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.label-xs {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* ── Color Utilities ── */
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-tertiary { color: var(--tertiary); }
.text-muted { color: var(--on-surface-variant); }
.text-dim { color: rgba(100,116,139,0.6); }
.text-outline { color: var(--outline); }
.text-error { color: var(--error); }
.text-success { color: var(--success); }

.bg-surface { background-color: var(--surface); }
.bg-surface-low { background-color: var(--surface-container-low); }
.bg-surface-container { background-color: var(--surface-container); }
.bg-surface-high { background-color: var(--surface-container-high); }
.bg-surface-highest { background-color: var(--surface-container-highest); }
.bg-surface-lowest { background-color: var(--surface-container-lowest); }

/* ── Glass Panel ── */
.glass-panel {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-ambient);
  border: 1px solid rgba(226,232,240,0.8);
}

/* ── Primary Gradient ── */
.gradient-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
}

.gradient-primary-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
  color: var(--on-primary);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-secondary {
  background: transparent;
  color: var(--on-surface);
  border: 1px solid #e2e8f0;
}

.btn-secondary:hover {
  background: var(--surface-container);
}

.btn-ghost {
  background: transparent;
  color: var(--on-surface-variant);
  padding: 8px 16px;
}

.btn-ghost:hover {
  color: var(--on-surface);
  background: rgba(37,99,235,0.05);
}

.btn-danger {
  background: var(--error-container);
  color: var(--error);
}

.btn-danger:hover {
  background: var(--error);
  color: var(--on-error);
}

/* Toggle Switch */
.toggle {
  width: 44px; height: 24px;
  background: var(--outline-variant);
  border-radius: 12px;
  position: relative;
  cursor: pointer;
  transition: background 0.3s ease;
}

.toggle::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  background: white;
  border-radius: 50%;
  top: 3px; left: 3px;
  transition: transform 0.3s ease;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

.toggle.active {
  background: var(--primary);
}

.toggle.active::after {
  transform: translateX(20px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
  border-radius: var(--radius-2xl);
}

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-md);
  width: 36px;
  height: 36px;
}

.btn-full { width: 100%; }

/* ── Form Inputs ── */
.input-field {
  width: 100%;
  background: var(--surface-container-low);
  border: 1px solid transparent;
  border-radius: var(--radius-xl);
  padding: 14px 16px;
  color: var(--on-surface);
  font-size: 0.875rem;
  transition: all var(--transition-base);
}

.input-field::placeholder {
  color: var(--outline-variant);
}

.input-field:focus {
  background: var(--surface-container-high);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-label {
  display: block;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--on-surface-variant);
  margin-bottom: 8px;
  padding-left: 4px;
}

.input-group {
  position: relative;
  margin-bottom: 20px;
}

.input-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--outline-variant);
  font-size: 18px;
  pointer-events: none;
}

.select-field {
  width: 100%;
  background: var(--surface-container-high);
  border: none;
  border-radius: var(--radius-lg);
  padding: 10px 14px;
  color: var(--on-surface);
  font-size: 0.875rem;
  appearance: none;
  cursor: pointer;
}

.checkbox-field {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid #cbd5e1;
  background: var(--surface-container-low);
  cursor: pointer;
  accent-color: var(--primary);
}

/* ── Cards ── */
.card {
  background: var(--surface-container-low);
  border-radius: var(--radius-2xl);
  padding: var(--space-lg);
  transition: background var(--transition-slow);
}

.card:hover {
  background: var(--surface-container);
}

.card-bordered {
  border: 1px solid #e2e8f0;
}

.card-elevated {
  background: var(--surface-container);
  box-shadow: var(--shadow-ambient);
}

.card-active {
  border: 2px solid var(--primary);
  background: var(--surface-container-high);
}

/* ── Stat Card ── */
.stat-card {
  background: var(--surface-container-low);
  border-radius: var(--radius-2xl);
  padding: 24px;
  border: 1px solid rgba(70, 69, 84, 0.05);
  transition: all var(--transition-base);
}

.stat-card:hover {
  background: var(--surface-container);
  transform: translateY(-2px);
}

.stat-card .stat-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  margin-bottom: 16px;
}

.stat-card .stat-value {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}

.stat-card .stat-label {
  font-size: 0.8125rem;
  color: var(--on-surface-variant);
}

.stat-card .stat-change {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
}

.stat-change.positive { color: var(--success); }
.stat-change.negative { color: var(--error); }

/* ── Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-primary {
  background: rgba(192, 193, 255, 0.15);
  color: var(--primary);
}

.badge-success {
  background: rgba(74, 222, 128, 0.15);
  color: var(--success);
}

.badge-warning {
  background: rgba(255, 183, 131, 0.15);
  color: var(--tertiary);
}

.badge-error {
  background: rgba(255, 180, 171, 0.15);
  color: var(--error);
}

.badge-draft {
  background: rgba(148, 163, 184, 0.15);
  color: var(--outline);
}

.badge-pro {
  background: linear-gradient(135deg, var(--primary), var(--primary-container));
  color: white;
}

/* ── Sidebar ── */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: var(--surface-container-lowest);
  border-right: 1px solid #e2e8f0;
  display: flex;
  flex-direction: column;
  padding: 24px 12px;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 40;
}

.sidebar-brand {
  padding: 0 12px 24px;
}

.sidebar-brand .brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--on-surface);
}

.sidebar-brand .brand-plan {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  transition: all var(--transition-base);
  position: relative;
}

.sidebar-link:hover {
  background: rgba(37, 99, 235, 0.06);
  color: var(--on-surface);
}

.sidebar-link.active {
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
}

.sidebar-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: var(--primary);
  border-radius: 0 2px 2px 0;
}

.sidebar-link .material-symbols-outlined {
  font-size: 20px;
}

.sidebar-footer {
  padding-top: 16px;
  border-top: 1px solid #e2e8f0;
  margin-top: auto;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-lg);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--on-primary);
}

.sidebar-user-info .name {
  font-size: 0.8125rem;
  font-weight: 600;
}

.sidebar-user-info .email {
  font-size: 0.6875rem;
  color: var(--on-surface-variant);
}

/* ── Top Navbar ── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 72px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  box-shadow: var(--shadow-ambient);
}

.navbar-brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--primary);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: #64748b;
  transition: color var(--transition-base);
}

.navbar-links a:hover {
  color: var(--on-surface);
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ── Dashboard Header ── */
.dash-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

.dash-header .header-left .label-sm {
  color: var(--primary);
  margin-bottom: 4px;
}

.dash-header .header-left h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* ── Table ── */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
  text-align: left;
  padding: 12px 16px;
  border-bottom: 1px solid #e2e8f0;
}

.data-table td {
  padding: 16px;
  font-size: 0.875rem;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
}

.data-table tr:hover td {
  background: rgba(37, 99, 235, 0.03);
}

/* ── Toggle Switch ── */
.toggle {
  width: 40px;
  height: 22px;
  background: var(--surface-container-high);
  border-radius: var(--radius-full);
  position: relative;
  cursor: pointer;
  transition: background var(--transition-base);
}

.toggle.active {
  background: var(--primary);
}

.toggle::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: white;
  top: 3px;
  left: 3px;
  transition: transform var(--transition-base);
}

.toggle.active::after {
  transform: translateX(18px);
}

/* ── Progress Bar ── */
.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--surface-container-high);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

.progress-bar-fill.primary { background: var(--primary); }
.progress-bar-fill.tertiary { background: var(--tertiary); }
.progress-bar-fill.success { background: var(--success); }
.progress-bar-fill.warning { background: var(--warning); }

/* ── Tabs ── */
.tabs {
  display: flex;
  border-bottom: 1px solid #e2e8f0;
}

.tab {
  flex: 1;
  padding: 14px 20px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
  text-align: center;
  transition: color var(--transition-base);
  position: relative;
}

.tab:hover {
  color: var(--on-surface);
}

.tab.active {
  color: var(--primary);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary);
}

/* ── Filter Pills ── */
.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-pill {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  border: 1px solid #e2e8f0;
  transition: all var(--transition-base);
  cursor: pointer;
}

.filter-pill:hover {
  background: var(--surface-container);
  color: var(--on-surface);
}

.filter-pill.active {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

/* ── Modal / Dialog ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.modal-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--surface-container);
  border-radius: var(--radius-2xl);
  padding: 32px;
  max-width: 520px;
  width: 90%;
  box-shadow: var(--shadow-elevated);
  transform: translateY(20px);
  transition: transform var(--transition-base);
}

.modal-overlay.show .modal {
  transform: translateY(0);
}

/* ── Toast / Notification ── */
.toast-container {
  position: fixed;
  top: 24px;
  right: 24px;
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--surface-container-highest);
  backdrop-filter: blur(24px);
  border-radius: var(--radius-lg);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.875rem;
  box-shadow: var(--shadow-elevated);
  animation: toastIn 0.3s ease forwards;
  border: 1px solid #e2e8f0;
}

.toast.out {
  animation: toastOut 0.3s ease forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(100px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100px); }
}

/* ── Decorative Blurs ── */
.blur-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(120px);
}

.blur-orb-primary {
  background: rgba(37, 99, 235, 0.06);
}

.blur-orb-secondary {
  background: rgba(99, 102, 241, 0.06);
}

/* ── Animations ── */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-24px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-fade-in { animation: fadeIn 0.5s ease forwards; }
.animate-slide-up { animation: slideUp 0.6s ease forwards; }
.animate-slide-down { animation: slideDown 0.6s ease forwards; }
.animate-scale-in { animation: scaleIn 0.4s ease forwards; }
.animate-pulse-soft { animation: pulse-soft 2s ease-in-out infinite; }

.stagger-1 { animation-delay: 0.1s; opacity: 0; }
.stagger-2 { animation-delay: 0.2s; opacity: 0; }
.stagger-3 { animation-delay: 0.3s; opacity: 0; }
.stagger-4 { animation-delay: 0.4s; opacity: 0; }
.stagger-5 { animation-delay: 0.5s; opacity: 0; }

/* ── Layout Utilities ── */
.page-wrapper {
  padding-top: 72px;
  min-height: 100vh;
}

.dash-wrapper {
  margin-left: 240px;
  padding: 32px;
  min-height: 100vh;
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-xs { gap: 4px; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 32px; }
.gap-xl { gap: 64px; }
.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.w-full { width: 100%; }
.h-full { height: 100%; }
.relative { position: relative; }
.absolute { position: absolute; }
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.hidden { display: none; }

.mt-xs { margin-top: 4px; }
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 32px; }
.mt-xl { margin-top: 64px; }
.mb-xs { margin-bottom: 4px; }
.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }
.mb-lg { margin-bottom: 32px; }
.mb-xl { margin-bottom: 64px; }

.p-sm { padding: 8px; }
.p-md { padding: 16px; }
.p-lg { padding: 32px; }
.p-xl { padding: 64px; }

.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Ghost border */
.ghost-border {
  border: 1px solid #e2e8f0;
}

/* ── Pricing card ── */
.pricing-card {
  background: var(--surface-container);
  border-radius: var(--radius-2xl);
  padding: 32px;
  text-align: left;
  display: flex;
  flex-direction: column;
  border: 1px solid #e2e8f0;
  transition: all var(--transition-base);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-ambient);
}

.pricing-card.featured {
  background: var(--surface-container-high);
  border: 2px solid var(--primary);
  position: relative;
}

.pricing-card .plan-tag {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--on-surface-variant);
  margin-bottom: 8px;
}

.pricing-card.featured .plan-tag {
  color: var(--primary);
}

.pricing-card .plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pricing-card .plan-price {
  display: flex;
  align-items: baseline;
  margin-top: 16px;
}

.pricing-card .plan-price .amount {
  font-size: 2rem;
  font-weight: 700;
}

.pricing-card .plan-price .period {
  font-size: 0.875rem;
  color: var(--on-surface-variant);
  margin-left: 4px;
}

.pricing-card .plan-features {
  margin: 24px 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pricing-card .plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--on-surface-variant);
}

.pricing-card .plan-features .material-symbols-outlined {
  font-size: 18px;
  color: var(--primary);
}

/* ── Divider ── */
.divider {
  display: flex;
  align-items: center;
  gap: 16px;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #e2e8f0;
}

.divider span {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--outline);
}

/* ── Password Strength ── */
.password-strength {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.password-strength .bar {
  flex: 1;
  height: 3px;
  border-radius: var(--radius-full);
  background: var(--surface-container-high);
  transition: background var(--transition-base);
}

.password-strength .bar.filled { background: var(--primary); }
.password-strength .bar.warn { background: var(--tertiary); }
.password-strength .bar.danger { background: var(--error); }

/* ── Dot Grid (Editor) ── */
.dot-grid {
  background-image: radial-gradient(circle, var(--surface-container-highest) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--surface-container-highest);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--outline-variant);
}

/* ── Save Gate Modal ── */
.save-gate-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(12px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.save-gate-overlay.show {
  opacity: 1;
  pointer-events: auto;
}

.save-gate-box {
  background: var(--surface-container);
  border-radius: var(--radius-2xl);
  padding: 48px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow-elevated);
}

.save-gate-box .whatsapp-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: #25D366;
  color: white;
  border-radius: var(--radius-xl);
  font-weight: 600;
  font-size: 0.9375rem;
  margin-top: 24px;
  transition: all var(--transition-base);
}

.save-gate-box .whatsapp-btn:hover {
  background: #20bd5a;
  transform: translateY(-2px);
}

/* ── Auth Pages Shared Styles ── */
.auth-body {
  background: var(--surface-container-lowest);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.auth-nav {
  position: fixed;
  top: 0;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  z-index: 50;
  backdrop-filter: blur(24px);
}

.auth-nav .brand {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--on-surface);
}

.auth-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 96px 16px 48px;
}

.auth-card-wrap {
  width: 100%;
  max-width: 480px;
  position: relative;
}

.auth-card {
  padding: 40px;
  position: relative;
  z-index: 1;
}

.auth-icon {
  font-size: 56px;
  color: var(--primary);
  margin-bottom: 16px;
}

.auth-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-subtitle {
  margin-bottom: 32px;
}

.auth-footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  padding: 16px;
  text-align: center;
  backdrop-filter: blur(12px);
}

/* ── Common Page Components ── */
.page-header-label {
  letter-spacing: 0.15em;
}

.page-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-top: 4px;
}

.section-label {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
}

/* ── Social Divider ── */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 24px 0;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--outline-variant);
}

/* ── Google Sign-In Button ── */
.google-auth-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
  color: var(--on-surface);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
}

.google-auth-btn:hover {
  background: var(--surface-container-high);
  box-shadow: var(--shadow-ambient);
}

/* ── Responsive — Full Overhaul ── */

/* ─── Mobile Sidebar Toggle ─── */
.sidebar-toggle {
  display: none;
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  padding: 8px;
  cursor: pointer;
  z-index: 55;
}
.sidebar-toggle .material-symbols-outlined { font-size: 24px; color: var(--on-surface); }

.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 39;
}

/* ─── Fluid Typography ─── */
.display-lg  { font-size: clamp(2rem, 5vw + 0.5rem, 3.5rem); }
.display-md  { font-size: clamp(1.75rem, 4vw + 0.5rem, 2.75rem); }
.headline-lg { font-size: clamp(1.35rem, 3vw + 0.3rem, 2rem); }
.headline-md { font-size: clamp(1.2rem, 2.5vw + 0.3rem, 1.75rem); }
.title-lg    { font-size: clamp(1.1rem, 2vw + 0.2rem, 1.375rem); }
.page-title  { font-size: clamp(1.4rem, 3vw + 0.3rem, 2rem); }

/* ─── Base Responsive (1280px) ─── */
@media (max-width: 1280px) {
  .container { max-width: 1024px; }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Tablet (1024px) ─── */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    box-shadow: var(--shadow-elevated);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .sidebar-toggle { display: flex; }
  .sidebar-overlay.show { display: block; }

  .dash-wrapper {
    margin-left: 0;
    padding: 24px 20px;
  }

  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }

  .navbar { padding: 0 20px; }
  .navbar-links { display: none; }

  .dash-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .dash-header .header-left h1 { font-size: 1.5rem; }

  /* Filter pills scroll */
  .filter-pills {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }
  .filter-pills::-webkit-scrollbar { display: none; }
  .filter-pill { flex-shrink: 0; }

  /* Table horizontal scroll */
  .data-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .data-table { min-width: 700px; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── Small Tablet / Large Phone (768px) ─── */
@media (max-width: 768px) {
  html { font-size: 15px; }

  .container { padding: 0 16px; }
  .dash-wrapper { padding: 16px 12px; }

  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  .stat-card { padding: 16px; }
  .stat-card .stat-value { font-size: 1.5rem; }
  .stat-card .stat-icon { width: 32px; height: 32px; margin-bottom: 10px; }

  .navbar { height: 60px; padding: 0 16px; }
  .page-wrapper { padding-top: 60px; }
  .navbar-brand { font-size: 1.1rem; }

  /* Auth Pages */
  .auth-card { padding: 24px 20px; }
  .auth-title { font-size: 1.35rem; }
  .auth-main { padding: 80px 12px 32px; }
  .auth-nav { padding: 16px 20px; }

  /* Modal */
  .modal { padding: 24px; max-width: 100%; width: 95%; }
  .save-gate-box { padding: 28px 20px; }

  /* Toast */
  .toast-container {
    top: auto;
    bottom: 16px;
    right: 12px;
    left: 12px;
  }
  .toast { font-size: 0.8125rem; padding: 12px 16px; }

  /* Pricing */
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card { padding: 24px; }

  /* Buttons */
  .btn { padding: 10px 20px; font-size: 0.8125rem; }
  .btn-lg { padding: 12px 24px; font-size: 0.9rem; }
  .btn-sm { padding: 6px 14px; font-size: 0.75rem; }

  /* Tabs */
  .tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .tab { padding: 12px 14px; font-size: 0.575rem; white-space: nowrap; }

  .hidden-mobile { display: none !important; }
}

/* ─── Phone (480px) ─── */
@media (max-width: 480px) {
  html { font-size: 14px; }

  .container { padding: 0 12px; }
  .dash-wrapper { padding: 12px 8px; }

  .card { padding: 16px; border-radius: var(--radius-xl); }
  .stat-card { padding: 14px; }
  .stat-card .stat-value { font-size: 1.25rem; }

  .input-field { padding: 12px 14px; font-size: 0.8125rem; border-radius: var(--radius-lg); }
  .input-label { font-size: 0.625rem; }

  .navbar { height: 54px; }
  .page-wrapper { padding-top: 54px; }

  .pricing-card .plan-price .amount { font-size: 1.5rem; }
  .pricing-card .plan-features li { font-size: 0.8125rem; }

  .badge { font-size: 0.6rem; padding: 3px 8px; }

  /* Fix flex row-reverse issue on mobile for RTL */
  .flex.gap-lg { gap: 16px; }

  .modal { border-radius: var(--radius-xl); padding: 20px 16px; }
}

/* ─── Hover state for touch devices ─── */
@media (hover: none) and (pointer: coarse) {
  .btn-primary:hover { filter: none; transform: none; }
  .stat-card:hover { transform: none; }
  .pricing-card:hover { transform: none; }
  .card:hover { background: var(--surface-container-low); }
  .sidebar-link:hover { background: none; }
}

/* ─── Print Styles ─── */
@media print {
  .navbar, .sidebar, .toast-container, .modal-overlay { display: none !important; }
  .dash-wrapper { margin-left: 0; }
  body { background: white; font-size: 12pt; }
}

/* ── RTL Support ── */
html[dir="rtl"] {
  direction: rtl;
  text-align: right;
}

html[dir="rtl"] .sidebar {
  left: auto;
  right: 0;
  border-right: none;
  border-left: 1px solid var(--outline-variant);
}

html[dir="rtl"] .dash-wrapper {
  margin-left: 0;
  margin-right: 240px;
}

html[dir="rtl"] .sidebar-link span {
  margin-right: 0;
  margin-left: 12px;
}

html[dir="rtl"] .btn .material-symbols-outlined {
  margin-right: 0;
  margin-left: 6px;
}

@media (max-width: 1024px) {
  html[dir="rtl"] .dash-wrapper {
    margin-right: 0;
  }
  html[dir="rtl"] .sidebar {
    transform: translateX(100%);
  }
  html[dir="rtl"] .sidebar.open {
    transform: translateX(0);
  }
}

/* ═══════════════════════════════════════════════════════════
   DARK MODE
   ═══════════════════════════════════════════════════════════ */

html.dark {
  --primary: #60a5fa;
  --primary-container: #3b82f6;
  --on-primary: #0f172a;
  --secondary: #818cf8;
  --secondary-container: #6366f1;
  --tertiary: #fbbf24;
  --tertiary-container: #d97706;

  --surface: #0f172a;
  --surface-dim: #0c1322;
  --surface-bright: #1e293b;
  --surface-container-lowest: #0c1322;
  --surface-container-low: #131c2e;
  --surface-container: #1a2538;
  --surface-container-high: #1e293b;
  --surface-container-highest: #253245;
  --surface-variant: #1e293b;

  --on-surface: #e2e8f0;
  --on-surface-variant: #94a3b8;
  --on-background: #e2e8f0;
  --inverse-surface: #f1f5f9;
  --inverse-on-surface: #1e293b;

  --outline: #64748b;
  --outline-variant: #334155;

  --error: #f87171;
  --error-container: #450a0a;
  --on-error: #ffffff;

  --success: #34d399;
  --warning: #fbbf24;
  --info: #60a5fa;

  --shadow-ambient: 0 4px 24px rgba(0,0,0,0.25);
  --shadow-primary: 0 8px 24px rgba(59,130,246,0.25);
  --shadow-elevated: 0 20px 48px rgba(0,0,0,0.35);
  color-scheme: dark;
}

html.dark body { background-color: var(--surface); color: var(--on-surface); }

html.dark .navbar {
  background: rgba(15, 23, 42, 0.92);
  box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

html.dark .glass-panel {
  background: rgba(15, 23, 42, 0.85);
  border-color: rgba(51, 65, 85, 0.6);
}

html.dark .btn-secondary {
  background: rgba(255,255,255,0.05);
  border-color: var(--outline-variant);
  color: var(--on-surface);
}
html.dark .btn-secondary:hover { background: rgba(255,255,255,0.1); }

html.dark .sidebar { border-right-color: var(--outline-variant); }
html.dark .data-table th { border-bottom-color: var(--outline-variant); }
html.dark .data-table td { border-bottom-color: rgba(51,65,85,0.3); }

html.dark img[src*="unsplash"] { opacity: 0.85; }

/* Dark mode toggle button */
.dark-toggle {
  width: 36px; height: 36px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  background: rgba(37,99,235,0.08);
  transition: all var(--transition-base);
}
.dark-toggle:hover { background: rgba(37,99,235,0.15); }

/* ═══════════════════════════════════════════════════════════
   LOADING STATES
   ═══════════════════════════════════════════════════════════ */

/* Skeleton */
.skeleton {
  background: linear-gradient(90deg, var(--surface-container) 25%, var(--surface-container-high) 50%, var(--surface-container) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite ease-in-out;
  border-radius: var(--radius-lg);
}

.skeleton-card {
  padding: 16px;
  border-radius: var(--radius-2xl);
  border: 1px solid var(--outline-variant);
  margin-bottom: 12px;
}

.skeleton-img {
  width: 100%; height: 160px;
  border-radius: var(--radius-xl);
  margin-bottom: 12px;
}

.skeleton-title {
  width: 60%; height: 20px;
  margin-bottom: 8px;
}

.skeleton-text {
  width: 90%; height: 14px;
}

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

/* Spinner */
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--outline-variant);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner-sm { width: 20px; height: 20px; border-width: 2px; }
.spinner-lg { width: 48px; height: 48px; border-width: 4px; }

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 64px 24px;
  opacity: 0.7;
}

/* ═══════════════════════════════════════════════════════════
   PAGE TRANSITIONS
   ═══════════════════════════════════════════════════════════ */

.page-enter {
  animation: fadeSlideIn 0.4s ease forwards;
}

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Smooth card entrance */
.card, .stat-card, .project-card-builder, .pricing-card {
  animation: fadeSlideIn 0.4s ease backwards;
}

.stat-card:nth-child(1) { animation-delay: 0.05s; }
.stat-card:nth-child(2) { animation-delay: 0.1s; }
.stat-card:nth-child(3) { animation-delay: 0.15s; }
.stat-card:nth-child(4) { animation-delay: 0.2s; }