/* ============================================
   NanoURL — Design System (base.css)
   Premium Dark Mode + Glassmorphism
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* ---- CSS Custom Properties ---- */
:root {
  /* Core Colors */
  --bg-primary: #07070f;
  --bg-secondary: #0c0c1d;
  --bg-tertiary: #12122a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-glass: rgba(255, 255, 255, 0.05);
  --bg-glass-heavy: rgba(255, 255, 255, 0.08);

  /* Accent Gradient */
  --accent-primary: #6C63FF;
  --accent-secondary: #FF6584;
  --accent-gradient: linear-gradient(135deg, #6C63FF 0%, #FF6584 100%);
  --accent-gradient-reverse: linear-gradient(135deg, #FF6584 0%, #6C63FF 100%);
  --accent-glow: rgba(108, 99, 255, 0.3);

  /* Status Colors */
  --success: #00D9A3;
  --success-bg: rgba(0, 217, 163, 0.1);
  --warning: #FFB547;
  --warning-bg: rgba(255, 181, 71, 0.1);
  --error: #FF4757;
  --error-bg: rgba(255, 71, 87, 0.1);
  --info: #2ED8FF;
  --info-bg: rgba(46, 216, 255, 0.1);

  /* Text */
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0C8;
  --text-muted: #6B6B8D;
  --text-on-accent: #FFFFFF;

  /* Borders */
  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-light: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(108, 99, 255, 0.3);

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(108, 99, 255, 0.15);
  --shadow-glow-accent: 0 0 40px rgba(108, 99, 255, 0.25);

  /* Glass */
  --glass-blur: 20px;
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);

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

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ---- Typography ---- */
h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.03em;
}

h2 {
  font-size: 2.25rem;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.5rem;
  letter-spacing: -0.01em;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1rem;
}

p {
  color: var(--text-secondary);
}

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

a:hover {
  color: var(--accent-secondary);
}

/* ---- Glass Card ---- */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: var(--bg-glass-heavy);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow: var(--shadow-glow);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-on-accent);
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(108, 99, 255, 0.45);
}

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

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
}

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

.btn-ghost:hover {
  background: var(--bg-glass);
  color: var(--text-primary);
}

.btn-danger {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(255, 71, 87, 0.2);
}

.btn-danger:hover {
  background: rgba(255, 71, 87, 0.2);
}

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

.btn-lg {
  padding: 16px 32px;
  font-size: 1.0625rem;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* Shimmer effect on buttons */
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.15), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover::before {
  left: 100%;
}

/* ---- Inputs ---- */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.input-group label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.input {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 0.9375rem;
  transition: all var(--transition-fast);
  outline: none;
}

.input:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
  background: rgba(255, 255, 255, 0.06);
}

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

.input-error {
  border-color: var(--error) !important;
  box-shadow: 0 0 0 3px rgba(255, 71, 87, 0.15) !important;
}

.error-text {
  color: var(--error);
  font-size: 0.8125rem;
  margin-top: 4px;
}

/* ---- Badge ---- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-free {
  background: var(--bg-glass);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.badge-pro {
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent-primary);
  border: 1px solid rgba(108, 99, 255, 0.3);
}

.badge-business {
  background: rgba(255, 181, 71, 0.15);
  color: var(--warning);
  border: 1px solid rgba(255, 181, 71, 0.3);
}

.badge-active {
  background: var(--success-bg);
  color: var(--success);
}

.badge-expired {
  background: var(--error-bg);
  color: var(--error);
}

/* ---- Toggle Switch ---- */
.toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
  border: 1px solid var(--border-subtle);
}

.toggle-slider::before {
  content: '';
  position: absolute;
  height: 20px;
  width: 20px;
  left: 2px;
  bottom: 2px;
  background: white;
  border-radius: 50%;
  transition: var(--transition-spring);
}

.toggle input:checked+.toggle-slider {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.toggle input:checked+.toggle-slider::before {
  transform: translateX(22px);
}

/* ---- Toast Notifications ---- */
.toast-container {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: 14px 20px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  background: var(--bg-glass-heavy);
  backdrop-filter: blur(20px);
  border: var(--glass-border);
  color: var(--text-primary);
  animation: slideIn 0.3s ease, fadeOut 0.3s ease 3.7s forwards;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  min-width: 300px;
  box-shadow: var(--shadow-lg);
}

.toast-success {
  border-left: 3px solid var(--success);
}

.toast-error {
  border-left: 3px solid var(--error);
}

.toast-warning {
  border-left: 3px solid var(--warning);
}

.toast-info {
  border-left: 3px solid var(--info);
}

/* ---- Modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 5000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border: var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  width: 90%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.95) translateY(20px);
  transition: transform var(--transition-spring);
  box-shadow: var(--shadow-lg);
}

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

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

.modal-header h3 {
  font-size: 1.25rem;
}

.modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-glass);
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--bg-glass-heavy);
  color: var(--text-primary);
}

/* ---- Skeleton Loading ---- */
.skeleton {
  background: linear-gradient(90deg,
      rgba(255, 255, 255, 0.04) 25%,
      rgba(255, 255, 255, 0.08) 50%,
      rgba(255, 255, 255, 0.04) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ---- Animations ---- */
@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
    transform: translateX(50px);
  }
}

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

  100% {
    background-position: 200% 0;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

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

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

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

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

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

.mt-sm {
  margin-top: var(--space-sm);
}

.mt-md {
  margin-top: var(--space-md);
}

.mt-lg {
  margin-top: var(--space-lg);
}

.mt-xl {
  margin-top: var(--space-xl);
}

.mb-md {
  margin-bottom: var(--space-md);
}

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

.w-full {
  width: 100%;
}

.hidden {
  display: none !important;
}

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

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

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .container {
    padding: 0 var(--space-md);
  }
}