@tailwind base;
@tailwind components;
@tailwind utilities;

/* -------------------------------------------------------------------------- */
/*                           PREMIUM DESIGN SYSTEM                            */
/* -------------------------------------------------------------------------- */

:root {
  /* Colors - Slate Dark Theme (Premium) */
  --bg-body: #0f172a;
  /* Slate 900 */
  --bg-surface: #1e293b;
  /* Slate 800 */
  --bg-surface-elevated: #28364d;
  /* Slate 750 (Custom) */

  --primary: #3b82f6;
  /* Blue 500 */
  --primary-hover: #2563eb;
  /* Blue 600 */
  --secondary: #64748b;
  /* Slate 500 */

  --text-main: #f8fafc;
  /* Slate 50 */
  --text-muted: #94a3b8;
  /* Slate 400 */

  --border-subtle: rgba(148, 163, 184, 0.1);
  --border-highlight: rgba(148, 163, 184, 0.2);

  /* Shadows (Soft & Heavy) */
  --shadow-soft: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.25);

  /* Layout Rules */
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  /* Cards */
  --radius-xl: 24px;
  /* Tool Container */
  --radius-pill: 9999px;
  /* Buttons */
}

/* -------------------------------------------------------------------------- */
/*                                GLOBAL RESET                                */
/* -------------------------------------------------------------------------- */

body {
  background-color: var(--bg-body);
  color: var(--text-main);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  letter-spacing: -0.025em;
}

/* -------------------------------------------------------------------------- */
/*                                 COMPONENTS                                 */
/* -------------------------------------------------------------------------- */

/* Premium Buttons */
/* Premium Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: 1px solid transparent;
  user-select: none;
  white-space: nowrap;
}

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

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3);
}

/* Primary Button (Solid Blue) */
.btn-primary {
  background-color: var(--primary);
  color: white;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.5);
}

/* Secondary Button (Outlined/Dark) */
.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-muted);
  border-color: var(--border-highlight);
}

.btn-secondary:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-soft);
}

/* Ghost Button (Transparent) */
.btn-ghost {
  background-color: transparent;
  color: var(--text-muted);
  padding: 8px 16px;
}

.btn-ghost:hover {
  background-color: var(--border-subtle);
  color: var(--text-main);
}

/* Icon Button (Square/Circle) */
.btn-icon {
  padding: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background-color: var(--bg-surface);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.btn-icon:hover {
  background-color: var(--primary);
  border-color: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

/* Sizes */
.btn-lg {
  padding: 16px 32px;
  font-size: 1.1rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* Full Width Helper */
.btn-full {
  width: 100%;
}

/* Tool Cards (All Tools Page) */
.tool-grid-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-grid-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-highlight);
  box-shadow: var(--shadow-soft), var(--shadow-glow);
  background-color: var(--bg-surface-elevated);
}

/* Main Tool Container (The App Box) */
.tool-app-container {
  background-color: var(--bg-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
  padding: 32px;
  /* Desktop default */
  position: relative;
  overflow: hidden;
}

/* Form Elements */
input[type="text"],
input[type="number"],
textarea,
select {
  @apply bg-slate-900 border border-slate-700 text-white w-full transition-all duration-200 outline-none shadow-inner;
  padding: 16px;
  border-radius: var(--radius-md);
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

/* Modern Range Slider */
input[type=range] {
  @apply h-2 bg-slate-700 rounded-full appearance-none cursor-pointer;
}

input[type=range]::-webkit-slider-thumb {
  @apply appearance-none w-6 h-6 bg-blue-500 rounded-full shadow-lg border-4 border-slate-900 transition-transform duration-200;
}

input[type=range]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

/* Modern Toggle Switch (using Checkbox) */
.toggle-switch {
  @apply relative inline-flex items-center cursor-pointer;
}

.toggle-switch input {
  @apply sr-only;
}

.toggle-track {
  @apply w-11 h-6 bg-slate-700 rounded-full peer-focus:outline-none peer-focus:ring-4 peer-focus:ring-blue-800 transition-colors duration-200;
}

.toggle-switch input:checked+.toggle-track {
  @apply bg-blue-600;
}

.toggle-knob {
  @apply absolute top-[2px] left-[2px] bg-white border border-gray-300 rounded-full h-5 w-5 transition-transform duration-200;
}

.toggle-switch input:checked+.toggle-track .toggle-knob {
  @apply translate-x-full border-white;
}

/* Note: CSS-only toggle needs specific HTML structure, using simplified version in tools */

/* -------------------------------------------------------------------------- */
/*                                UTILITIES                                   */
/* -------------------------------------------------------------------------- */

.section-padding {
  padding-top: 48px;
  padding-bottom: 48px;
}

.container-standard {
  @apply max-w-7xl mx-auto px-4;
}

/* Toast Notification (JS) */
.toast {
  @apply fixed bottom-8 left-1/2 transform -translate-x-1/2 bg-slate-800 text-white px-6 py-3 rounded-full shadow-2xl border border-slate-700 flex items-center gap-3 transition-all duration-300 z-50 translate-y-20 opacity-0;
}

.toast.show {
  @apply translate-y-0 opacity-100;
}

/* Animations */
@keyframes pulse-glow {

  0%,
  100% {
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
  }

  50% {
    box-shadow: 0 0 25px rgba(59, 130, 246, 0.5);
  }
}

/* Mobile Adjustments */
@media (max-width: 768px) {
  .tool-app-container {
    padding: 24px 16px;
    border-radius: var(--radius-lg);
  }
}