/*!
 * ============================================================
 * 🎨 BUDLR BLOG - SOFT UI FRAMEWORK
 * ============================================================
 * Modern, elegant CSS framework with soft UI design principles
 * 
 * @package BudlrBlog
 * @version 1.0.0
 * @author Budlr Development Team
 */

/* ============================================================
   🎨 GLOBAL COLORS – Light Theme
   ============================================================ */
:root {
  /* 🌐 Background & Surfaces */
  --color-bg: #f5f6fa;           /* Main background: soft neutral, not white */
  --color-bg-alt: #ffffff;       /* Panels, Cards */
  --color-surface: #eef0f5;      /* Hover / light surfaces */
  --color-surface-alt: #e3e6ed;  /* Contrast elements / Table Header */
  --color-border: #d2d6e0;       /* Subtle dividers */

  /* ✍️ Text colors */
  --color-text: #1e2330;         /* Primary text – deep anthracite, not black */
  --color-text-muted: #5b6172;   /* Secondary text – soft, readable */
  --color-text-inverse: #ffffff; /* For buttons on dark background */

  /* 🌟 Accent & Brand Colors */
  --color-primary: #5865f2;         /* Main brand: soft indigo (modern, professional) */
  --color-primary-hover: #4752d6;   /* Darker hover */
  --color-accent: #f97316;          /* ✅ Accent color – warm, modern orange */
  --color-accent-hover: #ea580c;    /* Darker variant for hover */

  /* 🩹 States */
  --color-success: #16a34a;
  --color-warning: #eab308;
  --color-error: #dc2626;
  --color-info: #3b82f6;

  /* 🪄 Effects */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);
  --shadow-xl: 0 12px 32px rgba(0,0,0,0.1);

  /* 🪩 Animation */
  --transition-fast: 150ms ease;
  --transition-medium: 300ms ease;
  --transition-slow: 500ms ease;

  /* 📏 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;

  /* 📝 Typography */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;

  /* 🔄 Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
}

/* ============================================================
   🌙 DARK THEME – soft, not too contrasted
   ============================================================ */
[data-theme="dark"] {
  --color-bg: #12151e;           
  --color-bg-alt: #1a1e29;       
  --color-surface: #1e2230;      
  --color-surface-alt: #2b3143;  
  --color-border: #3c445a;

  --color-text: #f5f6fa;
  --color-text-muted: #aeb3c2;
  --color-text-inverse: #0f1117;

  --color-primary: #7c86f8;
  --color-primary-hover: #646ef2;
  --color-accent: #fb8b4a;
  --color-accent-hover: #f97316;

  --color-success: #22c55e;
  --color-warning: #facc15;
  --color-error: #f87171;
  --color-info: #60a5fa;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.45);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-xl: 0 12px 32px rgba(0,0,0,0.6);
}

/* ============================================================
   🔄 RESET & BASE STYLES
   ============================================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-medium), color var(--transition-medium);
}

/* ============================================================
   📝 TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

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

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

/* ============================================================
   🧱 LAYOUT COMPONENTS
   ============================================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

.row {
  display: flex;
  flex-wrap: wrap;
  margin: 0 calc(-1 * var(--space-sm));
}

.col {
  flex: 1;
  padding: 0 var(--space-sm);
}

.col-auto { flex: 0 0 auto; }
.col-1 { flex: 0 0 8.33333%; }
.col-2 { flex: 0 0 16.66667%; }
.col-3 { flex: 0 0 25%; }
.col-4 { flex: 0 0 33.33333%; }
.col-6 { flex: 0 0 50%; }
.col-8 { flex: 0 0 66.66667%; }
.col-9 { flex: 0 0 75%; }
.col-12 { flex: 0 0 100%; }

/* ============================================================
   🎴 CARDS & SURFACES
   ============================================================ */
.card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

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

.card-footer {
  padding: var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ============================================================
   🔘 BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  gap: var(--space-xs);
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-text-inverse);
}

.btn-accent:hover {
  background: var(--color-accent-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-outline:hover {
  background: var(--color-surface);
  border-color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
}

.btn-ghost:hover {
  background: var(--color-surface);
  color: var(--color-text);
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
}

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

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

.form-control {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-base);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(88, 101, 242, 0.1);
}

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

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* ============================================================
   🏷️ BADGES & TAGS
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  color: var(--color-text-muted);
}

.badge-primary {
  background: rgba(88, 101, 242, 0.1);
  color: var(--color-primary);
}

.badge-accent {
  background: rgba(249, 115, 22, 0.1);
  color: var(--color-accent);
}

.badge-success {
  background: rgba(22, 163, 74, 0.1);
  color: var(--color-success);
}

/* ============================================================
   📊 UTILITIES
   ============================================================ */

/* Spacing utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-xs); }
.m-2 { margin: var(--space-sm); }
.m-3 { margin: var(--space-md); }
.m-4 { margin: var(--space-lg); }
.m-5 { margin: var(--space-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }
.p-5 { padding: var(--space-xl); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

.fw-light { font-weight: 300; }
.fw-normal { font-weight: 400; }
.fw-medium { font-weight: 500; }
.fw-semibold { font-weight: 600; }
.fw-bold { font-weight: 700; }

/* Display utilities */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* Flex utilities */
.justify-content-start { justify-content: flex-start; }
.justify-content-center { justify-content: center; }
.justify-content-end { justify-content: flex-end; }
.justify-content-between { justify-content: space-between; }
.justify-content-around { justify-content: space-around; }

.align-items-start { align-items: flex-start; }
.align-items-center { align-items: center; }
.align-items-end { align-items: flex-end; }

.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }

/* ============================================================
   📱 RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-sm);
  }
  
  .row {
    margin: 0 calc(-1 * var(--space-xs));
  }
  
  .col {
    padding: 0 var(--space-xs);
  }
  
  .col-sm-12 { flex: 0 0 100%; }
  
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  h3 { font-size: var(--font-size-xl); }
  
  .card-body,
  .card-header,
  .card-footer {
    padding: var(--space-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-xs);
  }
  
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .btn + .btn {
    margin-top: var(--space-sm);
  }
}