/**
 * ============================================
 * AdNaviFlow - Main Global Stylesheet
 * ============================================
 * Файл: /app/css/main.css
 * Цел: Глобални CSS variables, utility класове, компонентни стилове
 * Връзки: Зарежда се във всички страници
 * ============================================
 */

/* ============================================
   CSS CUSTOM PROPERTIES (VARIABLES)
   ============================================ */

:root {
  /* --- COLORS --- */
  
  /* Primary Colors */
  --color-primary: #60a5fa;
  --color-primary-dark: #3b82f6;
  --color-primary-light: #93c5fd;
  
  /* Accent Colors */
  --color-accent-primary: #ff7f00;
  --color-accent-secondary: #f97316;
  --color-accent-hover: #fb923c;
  
  /* Background Colors */
  --color-bg-primary: #0a0f1c;
  --color-bg-secondary: #0f172a;
  --color-bg-tertiary: #1e293b;
  --color-bg-card: #0f172a;
  --color-bg-hover: #1a2335;
  
  /* Gradients */
  --gradient-primary: radial-gradient(circle at top, #1e3a8a, #0a0f1c);
  --gradient-card: linear-gradient(135deg, #1e3a8a 0%, #0a0f1c 100%);
  
  /* Text Colors */
  --color-text-primary: #ffffff;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-text-disabled: #64748b;
  
  /* Border Colors */
  --color-border-primary: #ff7f00;
  --color-border-secondary: #334155;
  --color-border-light: #1e293b;
  
  /* Status Colors */
  --color-success: #22c55e;
  --color-success-bg: rgba(34, 197, 94, 0.15);
  --color-success-border: rgba(34, 197, 94, 0.4);
  --color-success-text: #86efac;
  
  --color-error: #ef4444;
  --color-error-bg: rgba(239, 68, 68, 0.15);
  --color-error-border: rgba(239, 68, 68, 0.4);
  --color-error-text: #fca5a5;
  
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.15);
  --color-warning-border: rgba(245, 158, 11, 0.4);
  --color-warning-text: #fcd34d;
  
  --color-info: #3b82f6;
  --color-info-bg: rgba(59, 130, 246, 0.15);
  --color-info-border: rgba(59, 130, 246, 0.4);
  --color-info-text: #93c5fd;
  
  /* --- SPACING --- */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-7: 1.75rem;   /* 28px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  
  /* --- TYPOGRAPHY --- */
  --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: 'Inter', sans-serif;
  --font-family-mono: 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  
  --font-weight-normal: 300;
  --font-weight-medium: 400;
  --font-weight-semibold: 500;
  --font-weight-bold: 500;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;
  
  /* --- BORDER RADIUS --- */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.5rem;     /* 8px */
  --radius-lg: 0.75rem;    /* 12px */
  --radius-xl: 1rem;       /* 16px */
  --radius-2xl: 1.25rem;   /* 20px */
  --radius-full: 9999px;
  
  /* --- SHADOWS --- */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
  --shadow-accent: 0 0 30px rgba(255, 127, 0, 0.15);
  --shadow-accent-hover: 0 0 15px rgba(255, 127, 0, 0.3);
  
  /* --- TRANSITIONS --- */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
  
  /* --- Z-INDEX --- */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

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

body {
  margin: 0;
  padding: 0;
  background: var(--gradient-primary);
  color: var(--color-text-primary);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  min-height: 100vh;
  font-weight: 300;
  color: var(--color-text-primary);
}

body.light-theme {
  color: #0f172a;
}
/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

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-4);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

strong, b {
  font-weight: var(--font-weight-bold);
}

small {
  font-size: var(--font-size-sm);
}

/* ============================================
   CARDS & CONTAINERS
   ============================================ */

.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-accent);
}

.card-header {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border-secondary);
}

.card-body {
  margin-bottom: var(--space-6);
}

.card-footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-secondary);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.container-sm {
  max-width: 600px;
}

.container-lg {
  max-width: 1400px;
}

/* ============================================
   FORMS & INPUTS
   ============================================ */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-secondary);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-primary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-accent-hover);
}

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

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-checkbox,
.form-radio {
  margin-right: var(--space-2);
  accent-color: var(--color-accent-primary);
}
.input-error {
    border-color: var(--color-error-text) !important;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-family-base);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  text-decoration: none;
  user-select: none;
}

.btn-primary {
  background: var(--color-bg-secondary);
  color: var(--color-accent-secondary);
  border-color: var(--color-accent-primary);
}

.btn-primary:hover {
  background: var(--color-bg-hover);
  box-shadow: var(--shadow-accent-hover);
  text-decoration: none;
}

.btn-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border-color: var(--color-border-secondary);
}

.btn-secondary:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-accent-primary);
  text-decoration: none;
}

.btn-success {
  background: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.btn-success:hover {
  background: #16a34a;
  text-decoration: none;
}

.btn-danger {
  background: var(--color-error);
  color: white;
  border-color: var(--color-error);
}

.btn-danger:hover {
  background: #dc2626;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--color-accent-secondary);
  border-color: var(--color-accent-primary);
}

.btn-outline:hover {
  background: var(--color-bg-hover);
  text-decoration: none;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

.btn-block {
  width: 100%;
  display: block;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   ALERTS & MESSAGES
   ============================================ */

.alert {
  padding: var(--space-4);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  font-size: var(--font-size-sm);
}

.alert-success {
  background: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-text);
}

.alert-error {
  background: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
}

.alert-warning {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
}

.alert-info {
  background: var(--color-info-bg);
  border: 1px solid var(--color-info-border);
  color: var(--color-info-text);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

/* Text Colors */
.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success-text); }
.text-error { color: var(--color-error-text); }
.text-warning { color: var(--color-warning-text); }

/* Font Weights */
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

/* Display */
.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; }

/* Flexbox */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.align-end { align-items: flex-end; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* Margin */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

/* Padding */
.p-0 { padding: 0; }
.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }
.p-8 { padding: var(--space-8); }

/* Width */
.w-full { width: 100%; }
.w-auto { width: auto; }

/* Height */
.h-full { height: 100%; }
.h-screen { height: 100vh; }

/* Position */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Border Radius */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 768px) {
  .hide-mobile { display: none; }
  .card { padding: var(--space-6); }
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
}

@media (min-width: 769px) {
  .hide-desktop { display: none; }
}

/* ============================================
   SCROLLBAR STYLING
   ============================================ */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-secondary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-primary);
}

/* ============================================
   LIGHT THEME
   ============================================ */

body.light-theme {
  --color-bg-primary: #f1f5f9;
  --color-bg-secondary: #ffffff;
  --color-bg-tertiary: #e2e8f0;
  --color-bg-card: #ffffff;
  --color-bg-hover: #f8fafc;

  --gradient-primary: radial-gradient(circle at top, #dbeafe, #f1f5f9);

  --color-text-primary: #0f172a;
  --color-text-secondary: #334155;
  --color-text-muted: #64748b;
  --color-text-disabled: #94a3b8;

  --color-border-secondary: #cbd5e1;
  --color-border-light: #e2e8f0;

  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.08);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);

  --color-success-bg: rgba(34,197,94,0.1);
  --color-error-bg: rgba(239,68,68,0.1);
  --color-warning-bg: rgba(245,158,11,0.1);
  --color-info-bg: rgba(59,130,246,0.1);
  --color: #0f172a;
}


body.light-theme .form-textarea {
  background: #f8fafc;
  color: #0f172a;
  border-color: #cbd5e1;
}

body.light-theme .btn-primary {
  background: #ffffff;
}

body.light-theme .btn-secondary {
  background: #e2e8f0;
  color: #0f172a;
}

body.light-theme .alert-success {
  background: rgba(34,197,94,0.15);
  border-color: rgba(34,197,94,0.5);
  color: #166534;
}

body.light-theme .alert-error {
  background: rgba(239,68,68,0.15);
  border-color: rgba(239,68,68,0.5);
  color: #991b1b;
}

body.light-theme .alert-warning {
  background: rgba(245,158,11,0.15);
  border-color: rgba(245,158,11,0.5);
  color: #92400e;
}

body.light-theme .auth-card {
  background: #ffffff;
  border-color: #e2e8f0;
}

body.light-theme .form-input,
body.light-theme .form-select {
  background: #f8fafc;
  color: #0f172a;
  border-color: #cbd5e1;
}

/* Theme Toggle Button */
.theme-toggle {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  z-index: var(--z-fixed);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-secondary);
  border-radius: var(--radius-full);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.2rem;
  transition: all var(--transition-base);
}

.theme-toggle:hover {
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-accent-hover);
}

/* ============================================
   LOADING SPINNER
   ============================================ */

.spinner {
  border: 3px solid var(--color-border-secondary);
  border-top-color: var(--color-accent-primary);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

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

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border: 1px solid var(--color-success-border);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
  border: 1px solid var(--color-warning-border);
}

.badge-danger {
  background: var(--color-error-bg);
  color: var(--color-error-text);
  border: 1px solid var(--color-error-border);
}

.badge-muted {
  background: var(--color-bg-tertiary);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border-secondary);
}

body.light-theme .badge-success { color: #166534; }
body.light-theme .badge-warning { color: #92400e; }
body.light-theme .badge-danger  { color: #991b1b; }

/* ============================================
   END OF MAIN.CSS
   ============================================ */