/* === Polkadot Brand: CSS Variables === */
:root {
  /* Typography */
  --font-body: 'DM Sans', sans-serif;
  --font-display: 'DM Serif Display', serif;

  /* Grey Scale */
  --grey-50:  #FAFAF9;
  --grey-100: #F5F5F4;
  --grey-200: #E7E5E4;
  --grey-300: #D6D3D1;
  --grey-400: #A8A29E;
  --grey-500: #78716C;
  --grey-600: #57534E;
  --grey-800: #292524;
  --grey-900: #1C1917;
  --grey-950: #0F0F0F;

  /* Accent */
  --pink: #FF2867;

  /* Semantic (Light Mode) */
  --bg: var(--grey-50);
  --surface: #FFFFFF;
  --text: var(--grey-900);
  --text-muted: var(--grey-600);
  --border: var(--grey-200);
  --accent: var(--pink);
  --accent-hover: #E6164F;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 50px rgba(0,0,0,0.12);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: var(--grey-950);
    --surface: var(--grey-900);
    --text: var(--grey-50);
    --text-muted: var(--grey-400);
    --border: var(--grey-800);
    --accent-hover: #FF5088;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.5);
  }
}

/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
}

h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2.5rem;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--accent-hover);
}

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

/* === Layout === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

main {
  min-height: 100vh;
}

/* === Buttons === */
button, .btn {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  line-height: 1.4;
}

.btn-primary {
  background: var(--accent);
  color: white;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--text-muted);
  background: var(--surface);
}

.btn-danger {
  background: #DC2626;
  color: white;
}
.btn-danger:hover {
  background: #B91C1C;
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  padding: var(--space-xs) var(--space-sm);
}
.btn-ghost:hover {
  color: var(--text);
  background: var(--surface);
}

.btn-sm {
  font-size: 0.8125rem;
  padding: 6px var(--space-md);
}

.btn-full {
  width: 100%;
}

.btn-icon {
  padding: var(--space-xs);
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
}
.btn-icon:hover {
  color: var(--text);
  background: var(--grey-100);
}
.btn-danger-icon:hover {
  color: #DC2626;
  background: rgba(220, 38, 38, 0.1);
}

@media (prefers-color-scheme: dark) {
  .btn-icon:hover {
    background: var(--grey-800);
  }
  .btn-danger-icon:hover {
    background: rgba(220, 38, 38, 0.2);
  }
}

/* === Forms === */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-xs);
  color: var(--text);
}

.form-input {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  width: 100%;
  padding: 10px var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 40, 103, 0.1);
}
.form-input::placeholder {
  color: var(--grey-400);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-error {
  color: #DC2626;
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: rgba(220, 38, 38, 0.08);
  border-radius: var(--radius-sm);
}

/* === Layout === */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.app-content {
  margin-left: 240px;
  flex: 1;
  min-width: 0;
  transition: margin-left var(--transition-normal);
}

/* === Sidebar === */
.app-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--border);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: transform var(--transition-normal), width var(--transition-normal);
}

.sidebar-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
}
.logo:hover {
  color: var(--text);
}

.logo-mark {
  flex-shrink: 0;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-md) 0;
  overflow-y: auto;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 400;
  border: none;
  border-left: 3px solid transparent;
  background: none;
  width: 100%;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.sidebar-link svg {
  flex-shrink: 0;
}
.sidebar-link:hover {
  color: var(--text);
  background: var(--grey-100);
}
.sidebar-link.router-link-active {
  color: var(--text);
  border-left-color: var(--accent);
  background: var(--grey-100);
}

@media (prefers-color-scheme: dark) {
  .sidebar-link:hover,
  .sidebar-link.router-link-active {
    background: var(--grey-800);
  }
}

.sidebar-footer {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border);
}

.sidebar-credit {
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Mobile toggle */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: var(--space-md);
  left: var(--space-md);
  z-index: 201;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  color: var(--text);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  align-items: center;
  justify-content: center;
}

.sidebar-backdrop {
  display: none;
}

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeIn 0.6s ease forwards;
}
.fade-in:nth-child(2) { animation-delay: 0.1s; }
.fade-in:nth-child(3) { animation-delay: 0.2s; }
.fade-in:nth-child(4) { animation-delay: 0.3s; }

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cardReveal {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

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

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* === Hero Section === */
.hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-4xl) 0 var(--space-3xl);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 680px;
}

.hero-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-lg);
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--accent);
  border-radius: var(--radius-full);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
  color: var(--text);
}

.hero-title-accent {
  color: var(--accent);
  font-style: italic;
}

.hero-subtitle {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: var(--space-2xl);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  line-height: 1;
  color: var(--text);
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-top: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

.hero-decoration {
  position: absolute;
  top: -40px;
  right: -60px;
  width: 500px;
  height: 500px;
  pointer-events: none;
  z-index: 0;
}

.hero-grid-pattern {
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 30% 40%, rgba(255, 40, 103, 0.08) 0%, transparent 60%),
    radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 100% 100%, 32px 32px;
  border-radius: 50%;
  opacity: 0.6;
}

@media (prefers-color-scheme: dark) {
  .hero-grid-pattern {
    background-image:
      radial-gradient(circle at 30% 40%, rgba(255, 40, 103, 0.12) 0%, transparent 60%),
      radial-gradient(circle, var(--grey-800) 1px, transparent 1px);
    background-size: 100% 100%, 32px 32px;
  }
}

/* === Skills Section === */
.skills-section {
  padding: var(--space-2xl) 0 var(--space-4xl);
}

.section-header {
  margin-bottom: var(--space-2xl);
}

.section-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

/* === Filter Pills === */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-2xl);
}

.filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-pill:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.filter-pill.active {
  color: white;
  background: var(--accent);
  border-color: var(--accent);
}

.filter-count {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.7;
  background: rgba(0,0,0,0.06);
  padding: 1px 7px;
  border-radius: var(--radius-full);
}

.filter-pill.active .filter-count {
  background: rgba(255,255,255,0.2);
}

/* === Skills Grid === */
.skills-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

/* === Skill Card === */
.skill-card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-normal);
  opacity: 0;
  transform: translateY(24px) scale(0.96);
  animation: cardReveal 0.5s ease forwards;
}

.skill-card:hover {
  transform: translateY(-4px) scale(1);
  box-shadow: var(--shadow-xl);
  border-color: transparent;
}


.skill-card-body {
  padding: var(--space-xl);
}

.skill-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.skill-category-badge {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--grey-100);
  color: var(--grey-600);
}

@media (prefers-color-scheme: dark) {
  .skill-category-badge {
    background: var(--grey-800);
    color: var(--grey-400);
  }
}

.skill-level {
  display: flex;
  gap: 4px;
}

.level-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: all var(--transition-fast);
}

.level-dot.active {
  background: var(--grey-600);
  transform: scale(1.1);
}

@media (prefers-color-scheme: dark) {
  .level-dot.active {
    background: var(--grey-400);
  }
}

.skill-card-title {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--text);
}

.skill-card-description {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.skill-card-description p {
  margin: 0;
}

.skill-level-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: capitalize;
}


/* === Empty & Loading States === */
.empty-state {
  text-align: center;
  padding: var(--space-4xl) var(--space-xl);
}

.empty-icon {
  color: var(--grey-300);
  margin-bottom: var(--space-lg);
}

@media (prefers-color-scheme: dark) {
  .empty-icon {
    color: var(--grey-600);
  }
}

.empty-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.empty-text {
  color: var(--text-muted);
  max-width: 400px;
  margin: 0 auto;
}

.loading-state {
  text-align: center;
  padding: var(--space-3xl);
  color: var(--text-muted);
}

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin: 0 auto var(--space-md);
  animation: spin 0.8s linear infinite;
}

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

/* === Login View === */
.login-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: var(--space-xl) 0;
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-lg);
}

.login-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.login-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.login-subtitle {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.login-form {
  margin-bottom: var(--space-lg);
}

.login-footer {
  text-align: center;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.875rem;
}
.back-link:hover {
  color: var(--text);
}

/* === Dashboard View === */
.dashboard-view {
  padding: var(--space-2xl) 0;
}

.dashboard-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-2xl);
}

.dashboard-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

.dashboard-subtitle {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.dashboard-table-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.dashboard-table {
  width: 100%;
  border-collapse: collapse;
}

.dashboard-table th {
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.dashboard-table td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  vertical-align: middle;
}

.dashboard-table tr:last-child td {
  border-bottom: none;
}

.dashboard-table tr:hover td {
  background: rgba(0,0,0,0.01);
}

@media (prefers-color-scheme: dark) {
  .dashboard-table tr:hover td {
    background: rgba(255,255,255,0.02);
  }
}

.fw-500 {
  font-weight: 500;
}

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

.text-right {
  text-align: right;
}

.table-badge {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: capitalize;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: var(--grey-100);
  color: var(--grey-600);
}

@media (prefers-color-scheme: dark) {
  .table-badge {
    background: var(--grey-800);
    color: var(--grey-400);
  }
}

/* === Modal === */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-lg);
}

.modal {
  background: var(--surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 540px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  animation: modalIn 0.25s ease;
}

.modal-sm {
  max-width: 400px;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl) var(--space-xl) var(--space-md);
}

.modal-title {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 600;
}

.modal-body {
  padding: 0 var(--space-xl) var(--space-xl);
}

.modal-body p {
  margin-bottom: var(--space-lg);
  color: var(--text-muted);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
}

/* === API Guide View === */
.api-guide-view {
  padding: var(--space-2xl) 0;
}

.page-header {
  margin-bottom: var(--space-2xl);
}

.page-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
}

.api-section {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border);
}

.api-section:last-child {
  border-bottom: none;
}

.api-section-title {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.api-desc {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-md);
}

.api-desc code {
  font-size: 0.875rem;
  padding: 2px 6px;
  background: var(--grey-100);
  border-radius: var(--radius-sm);
}

@media (prefers-color-scheme: dark) {
  .api-desc code {
    background: var(--grey-800);
  }
}

.method-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  margin-right: var(--space-sm);
  vertical-align: middle;
  background: var(--grey-100);
  color: var(--grey-600);
}

@media (prefers-color-scheme: dark) {
  .method-badge {
    background: var(--grey-800);
    color: var(--grey-400);
  }
}

.endpoint {
  font-size: 0.875rem;
  color: var(--text-muted);
  vertical-align: middle;
}

.code-block {
  background: var(--grey-900);
  color: var(--grey-100);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-md);
  overflow-x: auto;
  font-size: 0.8125rem;
  line-height: 1.7;
}

@media (prefers-color-scheme: dark) {
  .code-block {
    background: var(--grey-800);
  }
}

.code-block pre {
  margin: 0;
}

.code-block code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
}

/* === 404 View === */
.not-found-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  text-align: center;
}

.not-found-code {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 6rem;
  line-height: 1;
  color: var(--accent);
  margin-bottom: var(--space-md);
}

.not-found-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.not-found-text {
  color: var(--text-muted);
  margin-bottom: var(--space-xl);
}

/* === Responsive === */
@media (max-width: 768px) {
  .app-content {
    margin-left: 0;
  }

  .app-sidebar {
    transform: translateX(-100%);
  }

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

  .sidebar-toggle {
    display: flex;
  }

  .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 199;
  }

  .hero {
    padding: var(--space-2xl) 0;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-stats {
    gap: var(--space-lg);
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .hero-decoration {
    display: none;
  }

  .skills-grid {
    grid-template-columns: 1fr;
  }

  .filter-bar {
    gap: 6px;
  }

  .filter-pill {
    padding: 6px 12px;
    font-size: 0.8125rem;
  }

  .dashboard-header {
    flex-direction: column;
    gap: var(--space-md);
  }

  .dashboard-table-wrap {
    overflow-x: auto;
  }

  .dashboard-table {
    min-width: 600px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .login-card {
    padding: var(--space-xl);
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.875rem;
  }

  .hero-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }

  .stat-divider {
    display: none;
  }

  .stat {
    flex-direction: row;
    align-items: baseline;
    gap: var(--space-sm);
  }

  .stat-number {
    font-size: 1.25rem;
  }

  .logo-text {
    font-size: 0.9375rem;
  }
}

/* === Sidebar Collapsed State === */
.app-sidebar.collapsed {
  width: 60px;
}

.app-sidebar.collapsed .sidebar-label {
  display: none;
}

.app-sidebar.collapsed .sidebar-header {
  padding: var(--space-sm);
  flex-direction: column;
  gap: var(--space-xs);
  align-items: center;
}

.app-sidebar.collapsed .sidebar-link {
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
}

.app-sidebar.collapsed ~ .app-content {
  margin-left: 60px;
}

.sidebar-collapse-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  padding: 0;
  border: none;
  background: none;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sidebar-collapse-btn:hover {
  color: var(--text);
  background: var(--grey-100);
}

@media (prefers-color-scheme: dark) {
  .sidebar-collapse-btn:hover {
    background: var(--grey-800);
  }
}

@media (min-width: 769px) {
  .sidebar-collapse-btn {
    display: flex;
  }
}

/* === iOS Install Overlay === */
.ios-install-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-lg);
}

.ios-install-card {
  background: var(--surface);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-xl);
  animation: modalIn 0.25s ease;
}

@media (max-width: 480px) {
  .ios-install-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .ios-install-card {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    max-width: 100%;
    animation: slideUp 0.3s ease;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.ios-install-title {
  font-family: var(--font-body);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.ios-install-desc {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-bottom: var(--space-lg);
}

.ios-install-steps {
  list-style: none;
  counter-reset: steps;
  padding: 0;
  margin-bottom: var(--space-xl);
}

.ios-install-steps li {
  counter-increment: steps;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  color: var(--text);
}

.ios-install-steps li::before {
  content: counter(steps);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--grey-100);
  border-radius: 50%;
  color: var(--text-muted);
}

@media (prefers-color-scheme: dark) {
  .ios-install-steps li::before {
    background: var(--grey-800);
  }
}

.ios-install-steps li:last-child {
  border-bottom: none;
}

/* === PWA Display Mode Utilities === */
@media (display-mode: standalone) {
  .hide-in-pwa { display: none !important; }
}
@media (display-mode: browser) {
  .hide-in-browser { display: none !important; }
}
