/* =============================================================
   ShortLink Pro — Stylesheet
   Dark theme, purple + blue gradient, glassmorphism
   ============================================================= */

:root {
  --bg-base: #0B0E1A;
  --bg-elevated: #12162A;
  --purple: #8B5CF6;
  --purple-light: #A78BFA;
  --blue: #3B82F6;
  --blue-light: #60A5FA;
  --gradient-main: linear-gradient(135deg, #8B5CF6 0%, #3B82F6 100%);
  --gradient-glow: linear-gradient(135deg, rgba(139,92,246,0.35), rgba(59,130,246,0.35));

  --text-primary: #F1F2F8;
  --text-secondary: #9CA3C4;
  --text-muted: #6B7290;

  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-bg-solid: rgba(18, 22, 42, 0.7);

  --success: #34D399;
  --danger: #F87171;
  --warning: #FBBF24;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --font-display: 'Clash', 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  --shadow-glow: 0 8px 32px rgba(139, 92, 246, 0.25);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
}

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

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* =============================================================
   Ambient Background Orbs
   ============================================================= */
.bg-orbs {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  animation: float 18s ease-in-out infinite;
}

.orb-1 {
  width: 420px; height: 420px;
  background: var(--purple);
  top: -100px; left: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 380px; height: 380px;
  background: var(--blue);
  bottom: -120px; right: -80px;
  animation-delay: 4s;
}

.orb-3 {
  width: 300px; height: 300px;
  background: #6366F1;
  top: 40%; left: 60%;
  animation-delay: 8s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(40px, -30px) scale(1.08); }
  66% { transform: translate(-30px, 40px) scale(0.95); }
}

@media (prefers-reduced-motion: reduce) {
  .orb { animation: none; }
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* =============================================================
   Glassmorphism
   ============================================================= */
.glass {
  background: var(--glass-bg-solid);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* =============================================================
   Buttons
   ============================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  padding: 13px 22px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-main);
  color: #fff;
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(139, 92, 246, 0.55);
}

.btn-primary:active { transform: translateY(0); }

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-block { width: 100%; }

.btn-ghost {
  background: var(--glass-bg);
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}

.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
}

.btn-sm { padding: 9px 16px; font-size: 13px; }

.btn-icon {
  padding: 9px;
  border-radius: 10px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-icon.danger:hover { color: var(--danger); background: rgba(248,113,113,0.12); }
.btn-icon.success:hover { color: var(--success); background: rgba(52,211,153,0.12); }

/* =============================================================
   Login Page
   ============================================================= */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 420px;
  text-align: center;
}

.login-card {
  padding: 44px 36px;
  animation: cardIn 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(24px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.login-icon {
  width: 72px; height: 72px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-glow);
  border-radius: 20px;
  border: 1px solid rgba(139,92,246,0.3);
}

.login-card h1 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-sub {
  color: var(--text-secondary);
  font-size: 14.5px;
  margin-bottom: 28px;
}

.login-footer {
  margin-top: 24px;
  color: var(--text-muted);
  font-size: 12.5px;
}

.status-emoji { font-size: 48px; margin-bottom: 8px; }

/* =============================================================
   Form Elements
   ============================================================= */
.input-group { margin-bottom: 18px; text-align: left; }

.input-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.input-group input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 14.5px;
  transition: all 0.2s ease;
}

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

.input-group input:focus {
  outline: none;
  border-color: var(--purple);
  background: rgba(139,92,246,0.06);
  box-shadow: 0 0 0 3px rgba(139,92,246,0.15);
}

.password-field { position: relative; }

.password-field input { padding-right: 46px; }

.toggle-pass {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  padding: 4px;
}

.toggle-pass:hover { color: var(--text-primary); }

.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 500;
  margin-bottom: 20px;
  text-align: left;
}

.alert-error {
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: #FCA5A5;
}

.alert-success {
  background: rgba(52,211,153,0.1);
  border: 1px solid rgba(52,211,153,0.3);
  color: #6EE7B7;
}

/* =============================================================
   App Shell
   ============================================================= */
.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  margin: 16px 16px 0;
  border-radius: var(--radius-md);
  position: sticky;
  top: 16px;
  z-index: 50;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.3px;
}

.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

/* =============================================================
   Stats Grid
   ============================================================= */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: transform 0.25s ease;
}

.stat-card:hover { transform: translateY(-3px); }

.stat-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.icon-purple { background: rgba(139,92,246,0.15); }
.icon-green { background: rgba(52,211,153,0.15); }
.icon-red { background: rgba(248,113,113,0.15); }
.icon-blue { background: rgba(59,130,246,0.15); }
.icon-orange { background: rgba(251,191,36,0.15); }
.icon-pink { background: rgba(236,72,153,0.15); }

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

.stat-value {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.5px;
  line-height: 1.2;
}

.stat-label {
  font-size: 12.5px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* =============================================================
   Panels
   ============================================================= */
.panel {
  padding: 26px;
  margin-bottom: 22px;
}

.panel-header {
  margin-bottom: 22px;
}

.panel-header h2 {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.panel-header-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.panel-header-flex h2 { margin-bottom: 0; }

/* =============================================================
   Search Box
   ============================================================= */
.search-box {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 220px;
}

.search-box svg {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.search-box input {
  width: 100%;
  padding: 10px 14px 10px 40px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13.5px;
}

.search-box input:focus {
  outline: none;
  border-color: var(--purple);
}

/* =============================================================
   Link Creation Form
   ============================================================= */
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-msg {
  margin-top: 12px;
  font-size: 13.5px;
  font-weight: 500;
}

.form-msg.success { color: var(--success); }
.form-msg.error { color: var(--danger); }

/* =============================================================
   Links List / Cards
   ============================================================= */
.links-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 120px;
}

.link-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  transition: all 0.25s ease;
  animation: fadeInUp 0.4s ease both;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.link-card:hover {
  border-color: rgba(139,92,246,0.35);
  background: rgba(139,92,246,0.04);
}

.link-card.disabled { opacity: 0.55; }

.link-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

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

.link-name {
  font-weight: 700;
  font-size: 15.5px;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.badge {
  font-size: 10.5px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.badge-active { background: rgba(52,211,153,0.15); color: var(--success); }
.badge-disabled { background: rgba(248,113,113,0.15); color: var(--danger); }

.link-short {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--blue-light);
  margin-bottom: 3px;
  word-break: break-all;
}

.link-original {
  font-size: 12.5px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 480px;
}

.link-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.link-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--glass-border);
}

.link-stat {
  text-align: center;
}

.link-stat-value {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.link-stat-label {
  font-size: 10.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-top: 2px;
}

.empty-state {
  text-align: center;
  padding: 50px 20px;
  color: var(--text-muted);
}

.empty-state-icon { font-size: 40px; margin-bottom: 12px; }

/* =============================================================
   Pagination
   ============================================================= */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border-radius: 8px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 13.5px;
  font-weight: 600;
  transition: all 0.2s ease;
}

.page-btn:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }

.page-btn.active {
  background: var(--gradient-main);
  color: #fff;
  border-color: transparent;
}

.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* =============================================================
   Loading Spinner
   ============================================================= */
.loading-spinner {
  display: flex;
  justify-content: center;
  padding: 40px 0;
}

.spinner {
  width: 32px; height: 32px;
  border: 3px solid rgba(139,92,246,0.15);
  border-top-color: var(--purple);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* =============================================================
   Modal
   ============================================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 7, 16, 0.75);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.modal-overlay.active { display: flex; opacity: 1; }

.modal {
  width: 100%;
  max-width: 460px;
  padding: 28px;
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal { transform: translateY(0) scale(1); }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}

.modal-header h3 { font-size: 17px; font-weight: 700; }

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
  padding: 4px;
}

.modal-close:hover { color: var(--text-primary); }

.qr-modal { max-width: 340px; text-align: center; }

.qr-content { display: flex; flex-direction: column; align-items: center; gap: 16px; }

#qrCodeCanvas {
  background: #fff;
  padding: 16px;
  border-radius: 14px;
}

.qr-link-text {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-secondary);
  word-break: break-all;
}

/* =============================================================
   Toast
   ============================================================= */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--glass-bg-solid);
  backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  box-shadow: var(--shadow-card);
  z-index: 300;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 90vw;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.toast.toast-success { border-color: rgba(52,211,153,0.4); }
.toast.toast-error { border-color: rgba(248,113,113,0.4); }

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 900px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: 1fr; }
  .link-original { max-width: 280px; }
}

@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-card { padding: 16px; }
  .stat-value { font-size: 21px; }
  .topbar { margin: 10px 10px 0; padding: 14px 18px; }
  .main-content { padding: 18px 12px 50px; }
  .panel { padding: 18px; }
  .link-actions { width: 100%; justify-content: flex-start; }
  .link-stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .link-original { max-width: 100%; }
  .search-box { width: 100%; }
  .panel-header-flex { flex-direction: column; align-items: stretch; }
}

@media (max-width: 400px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .login-card { padding: 32px 22px; }
}

/* Focus visibility for accessibility */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--purple-light);
  outline-offset: 2px;
}