/* ===== Stripe-Inspired Design System for Pan-NPCSMC ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

:root {
  --primary: #533afd;
  --primary-deep: #4434d4;
  --primary-press: #2e2b8c;
  --primary-soft: #665efd;
  --primary-bg-subdued: #b9b9f9;
  --brand-dark-900: #1c1e54;
  --ruby: #ea2261;
  --magenta: #f96bee;
  --lemon: #9b6829;
  --canvas: #ffffff;
  --canvas-soft: #f6f9fc;
  --canvas-cream: #f5e9d4;
  --hairline: #e3e8ee;
  --hairline-input: #a8c3de;
  --ink: #0d253d;
  --ink-secondary: #273951;
  --ink-mute: #64748d;
  --ink-mute-2: #61718a;
  --on-primary: #ffffff;
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-xxl: 32px;
  --spacing-huge: 64px;
  --rounded-xs: 4px;
  --rounded-sm: 6px;
  --rounded-md: 8px;
  --rounded-lg: 12px;
  --rounded-xl: 16px;
  --rounded-pill: 9999px;
  --shadow-1: 0 1px 3px rgba(0,55,112,0.08);
  --shadow-2: 0 8px 24px rgba(0,55,112,0.08), 0 2px 6px rgba(0,55,112,0.04);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 300;
  font-size: 15px;
  line-height: 1.4;
  color: var(--ink);
  background: var(--canvas);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01";
  letter-spacing: 0;
}

/* ===== Gradient Mesh Backdrop ===== */
.gradient-mesh {
  position: relative;
  width: 100%;
  min-height: 320px;
  overflow: hidden;
  background: linear-gradient(135deg,
    #f5e9d4 0%,
    #f5d4a8 15%,
    #e8d5f5 30%,
    #d5d5f9 45%,
    #533afd 60%,
    #ea2261 80%,
    #f96bee 100%
  );
  background-size: 200% 200%;
  animation: meshShift 20s ease-in-out infinite;
}

.gradient-mesh::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 140%;
  height: 200%;
  background:
    radial-gradient(ellipse 40% 50% at 20% 30%, rgba(245,233,212,0.6) 0%, transparent 70%),
    radial-gradient(ellipse 35% 45% at 50% 20%, rgba(249,107,238,0.3) 0%, transparent 70%),
    radial-gradient(ellipse 45% 55% at 75% 35%, rgba(83,58,253,0.35) 0%, transparent 70%),
    radial-gradient(ellipse 30% 40% at 85% 50%, rgba(234,34,97,0.3) 0%, transparent 70%);
  filter: blur(60px);
  z-index: 0;
}

.gradient-mesh::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50%;
  background: linear-gradient(to bottom, transparent 0%, var(--canvas) 100%);
  z-index: 1;
}

@keyframes meshShift {
  0%, 100% { background-position: 0% 50%; }
  25% { background-position: 50% 0%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 50% 100%; }
}

/* ===== Navigation ===== */
.nav-bar {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  font-size: 22px;
  font-weight: 300;
  letter-spacing: -0.64px;
  color: var(--ink);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo img {
  width: 28px;
  height: 28px;
  border-radius: var(--rounded-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-links a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 300;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--primary); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--rounded-pill);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1;
  cursor: pointer;
  text-decoration: none;
  border: none;
  transition: all 0.2s ease;
  white-space: nowrap;
  letter-spacing: 0;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn-primary:hover { background: var(--primary-deep); }
.btn-primary:active { background: var(--primary-press); }

.btn-secondary {
  background: var(--canvas);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.btn-secondary:hover { background: var(--canvas-soft); }

.btn-on-dark {
  background: var(--brand-dark-900);
  color: var(--on-primary);
}

.btn-on-dark:hover { opacity: 0.9; }

.btn-sm {
  font-size: 14px;
  padding: 6px 12px;
}

.btn-danger {
  background: var(--ruby);
  color: var(--on-primary);
}

.btn-danger:hover { opacity: 0.85; }

/* ===== Hero Section ===== */
.hero {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 40px var(--spacing-xl) 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 56px;
  font-weight: 300;
  letter-spacing: -1.4px;
  line-height: 1.03;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: 16px;
  font-weight: 300;
  line-height: 1.4;
  color: var(--ink-secondary);
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
  letter-spacing: 0;
}

/* ===== Container ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* ===== Section ===== */
.section {
  padding: var(--spacing-huge) 0;
}

.section-soft {
  background: var(--canvas-soft);
}

.section-cream {
  background: var(--canvas-cream);
}

.section-dark {
  background: var(--brand-dark-900);
  color: var(--on-primary);
}

.section-title {
  font-size: 32px;
  font-weight: 300;
  letter-spacing: -0.64px;
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}

.section-title-light { color: var(--on-primary); }

/* ===== Cards ===== */
.card {
  background: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  border: 1px solid var(--hairline);
  box-shadow: var(--shadow-1);
}

.card-cream {
  background: var(--canvas-cream);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
}

.card-dashboard {
  background: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-2);
}

/* ===== File Browser ===== */
.file-browser {
  margin-top: -40px;
  position: relative;
  z-index: 5;
}

.browser-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.browser-title {
  font-size: 26px;
  font-weight: 300;
  letter-spacing: -0.26px;
  line-height: 1.12;
  color: var(--ink);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 300;
  color: var(--ink-mute);
  letter-spacing: -0.36px;
  font-feature-settings: "tnum";
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}

.breadcrumb a:hover { text-decoration: underline; }

.breadcrumb span { color: var(--ink-mute-2); }

/* ===== File Card Grid ===== */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.file-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--rounded-lg);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-1);
}

.file-card:hover {
  border-color: var(--primary-soft);
  box-shadow: var(--shadow-2);
}

.file-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--rounded-md);
  font-size: 20px;
  flex-shrink: 0;
  font-weight: 400;
}

.file-card-icon.folder { background: #f0ecff; color: var(--primary); }
.file-card-icon.image { background: #fdf0f4; color: var(--ruby); }
.file-card-icon.document { background: #eef4ff; color: #3b82f6; }
.file-card-icon.video { background: #fef3e4; color: #f59e0b; }
.file-card-icon.archive { background: #f0f4f0; color: #10b981; }
.file-card-icon.other { background: var(--canvas-soft); color: var(--ink-mute); }

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

.file-card-name {
  font-size: 15px;
  font-weight: 300;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-card-name.is-file-link {
  color: var(--primary);
}

.file-card-meta {
  font-size: 13px;
  font-weight: 400;
  color: var(--ink-mute);
  letter-spacing: -0.39px;
  font-feature-settings: "tnum";
  margin-top: 2px;
}

.file-card-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s;
}

.file-card:hover .file-card-actions { opacity: 1; }

.icon-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--ink-mute);
  border-radius: var(--rounded-pill);
  cursor: pointer;
  font-size: 16px;
  transition: all 0.2s;
}

.icon-btn:hover {
  background: var(--canvas-soft);
  color: var(--primary);
}
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}


/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: var(--spacing-huge) var(--spacing-xl);
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-lg);
  opacity: 0.4;
  font-weight: 300;
}

.empty-state h3 {
  font-size: 20px;
  font-weight: 300;
  letter-spacing: -0.2px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  color: var(--ink-mute);
  font-size: 15px;
}

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

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 300;
  color: var(--ink-secondary);
  margin-bottom: var(--spacing-xs);
}

.text-input {
  width: 100%;
  padding: 8px 12px;
  background: var(--canvas);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  font-weight: 300;
  border: 1px solid var(--hairline-input);
  border-radius: var(--rounded-sm);
  outline: none;
  transition: border-color 0.2s;
  line-height: 1.4;
}

.text-input:focus {
  border-color: var(--primary);
}

/* ===== Login Page ===== */
.login-container {
  max-width: 420px;
  margin: 80px auto;
  padding: 0 var(--spacing-xl);
}

.login-card {
  background: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  box-shadow: var(--shadow-2);
  border: 1px solid var(--hairline);
}

.login-card h2 {
  font-size: 26px;
  font-weight: 300;
  letter-spacing: -0.26px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
}

.login-card .subtitle {
  font-size: 15px;
  color: var(--ink-mute);
  margin-bottom: var(--spacing-xl);
}

.error-msg {
  background: #fef2f2;
  color: #dc2626;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--rounded-sm);
  font-size: 14px;
  margin-bottom: var(--spacing-lg);
  display: none;
}

/* ===== Share Page ===== */
.share-container {
  max-width: 600px;
  margin: 80px auto;
  padding: 0 var(--spacing-xl);
}

.share-card {
  background: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  box-shadow: var(--shadow-2);
  border: 1px solid var(--hairline);
  text-align: center;
}

.share-file-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-xl);
  border-radius: var(--rounded-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 36px;
  font-weight: 300;
}

.share-file-name {
  font-size: 22px;
  font-weight: 300;
  letter-spacing: -0.22px;
  color: var(--ink);
  margin-bottom: var(--spacing-sm);
  word-break: break-all;
}

.share-file-size {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-mute);
  letter-spacing: -0.42px;
  font-feature-settings: "tnum";
  margin-bottom: var(--spacing-xl);
}

/* ===== Upload Zone ===== */
.upload-zone {
  border: 2px dashed var(--hairline-input);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: var(--spacing-xl);
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--primary);
  background: rgba(83,58,253,0.02);
}

.upload-zone-text {
  font-size: 15px;
  color: var(--ink-mute);
}

.upload-zone-text strong {
  color: var(--primary);
  font-weight: 400;
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.4);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal {
  background: var(--canvas);
  border-radius: var(--rounded-lg);
  padding: var(--spacing-xxl);
  box-shadow: var(--shadow-2);
  max-width: 480px;
  width: 90%;
}

.modal h3 {
  font-size: 20px;
  font-weight: 300;
  letter-spacing: -0.2px;
  color: var(--ink);
  margin-bottom: var(--spacing-lg);
}

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

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--ink);
  color: var(--on-primary);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--rounded-pill);
  font-size: 14px;
  font-weight: 300;
  z-index: 200;
  box-shadow: var(--shadow-2);
  animation: slideUp 0.3s ease;
  letter-spacing: 0;
}

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

/* ===== Admin Toolbar ===== */
.admin-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero h1 { font-size: 36px; letter-spacing: -0.96px; }
  .file-grid { grid-template-columns: 1fr; }
  .nav-bar { flex-wrap: wrap; gap: var(--spacing-sm); }
  .browser-header { flex-direction: column; align-items: flex-start; }
  .section { padding: var(--spacing-xxl) 0; }
  .section-title { font-size: 26px; letter-spacing: -0.26px; }
  .gradient-mesh { min-height: 240px; }
}

/* ===== Footer ===== */
.footer {
  background: var(--canvas);
  color: var(--ink-mute);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: -0.39px;
  padding: var(--spacing-huge) var(--spacing-xl);
  text-align: center;
  border-top: 1px solid var(--hairline);
}

/* ===== Pill Tag ===== */
.pill-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  background: var(--primary-bg-subdued);
  color: var(--primary-deep);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.1px;
  text-transform: uppercase;
  border-radius: var(--rounded-pill);
}

/* ===== Link ===== */
.link-on-light {
  color: var(--primary);
  text-decoration: none;
  font-size: 15px;
  font-weight: 300;
}

.link-on-light:hover { text-decoration: underline; }

/* ===== Loading spinner ===== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--hairline);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* ===== Utility ===== */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }

/* ===== Progress bar ===== */
.progress-bar {
  width: 100%;
  height: 4px;
  background: var(--hairline);
  border-radius: 2px;
  overflow: hidden;
  margin-top: var(--spacing-sm);
}

.progress-bar-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s;
}

/* ===== User badge ===== */
.user-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 14px;
  color: var(--ink-secondary);
}