/**
 * Dark Mode Theme System
 * CSS Custom Properties for Light/Dark Mode Toggle
 */

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

:root {
  /* Dark Mode Colors (Default) */
  --color-bg-primary: #0C0C0D;
  --color-bg-secondary: #00000000;
  --color-bg-tertiary: rgba(20, 21, 22, 0.5);
  --color-bg-card: rgba(20, 21, 22, 0.8);
  --color-bg-overlay: rgba(12, 12, 13, 0.95);
  
  --color-text-primary: #FFFCFA;
  --color-text-secondary: rgba(255, 252, 250, 0.8);
  --color-text-tertiary: rgba(255, 252, 250, 0.6);
  --color-text-muted: rgba(146, 148, 159, 0.6);
  
  --color-accent: #3076FE;
  --color-accent-hover: #2563eb;
  --color-accent-rgb: 48, 118, 254;
  
  --color-border: rgba(146, 148, 159, 0.1);
  --color-border-light: rgba(146, 148, 159, 0.05);
  --color-border-strong: rgba(146, 148, 159, 0.2);
  
  --color-success: #27ae60;
  --color-error: #e74c3c;
  --color-warning: #f39c12;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.25);
  
  /* Backdrop filters */
  --backdrop-blur: blur(15px);
  --backdrop-blur-strong: blur(20px);
}


/* ========================================
   APPLY THEME VARIABLES TO ELEMENTS
   ======================================== */

html,
body {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Headers */
header,
.header,
.main-menu {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
  backdrop-filter: var(--backdrop-blur);
}

/* Sections and Cards */
section,
.section-wrapper {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
}

.card,
.service-card,
.blog-card,
.portfolio-item,
.team-member-card {
  background: var(--color-bg-card);
  border-color: var(--color-border);
  box-shadow: var(--shadow-md);
}

.card:hover,
.service-card:hover,
.blog-card:hover,
.portfolio-item:hover {
  box-shadow: var(--shadow-lg);
}

/* Text Elements */
h1, h2, h3, h4, h5, h6,
.heading,
.title {
  color: var(--color-text-primary);
}

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

.text-muted,
.meta,
.date {
  color: var(--color-text-muted);
}

/* Links and Buttons */
a {
  color: var(--color-text-secondary);
  transition: color 0.3s ease;
}

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

.btn-primary,
.btn-accent {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.btn-primary:hover,
.btn-accent:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

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

.btn-outline:hover {
  background-color: var(--color-bg-tertiary);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Forms */
.form-control,
input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-border);
  color: var(--color-text-primary);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.form-control:focus,
input:focus,
textarea:focus,
select:focus {
  background-color: var(--color-bg-primary);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.1);
}

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

/* Navigation */
.nav-link,
.menu-item a {
  color: var(--color-text-secondary);
}

.nav-link:hover,
.menu-item a:hover,
.nav-link.active {
  color: var(--color-accent);
}

/* Footer */
footer,
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
}

/* Modals and Overlays */
.modal,
.popup,
.overlay {
  background-color: var(--color-bg-overlay);
  backdrop-filter: var(--backdrop-blur-strong);
}

.modal-content {
  background: var(--color-bg-card);
  border-color: var(--color-border);
  box-shadow: var(--shadow-xl);
}

/* Borders */
hr,
.divider,
.separator {
  border-color: var(--color-border);
}

/* ========================================
   THEME TOGGLE BUTTON
   ======================================== */

.theme-toggle {
  position: fixed;
  top: 100px;
  right: 20px;
  z-index: 9998;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  color: var(--color-text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-md);
}

.theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.theme-toggle:active {
  transform: translateY(0);
}

.theme-toggle:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(var(--color-accent-rgb), 0.3);
}

/* Icon visibility based on theme */
[data-theme="dark"] .theme-toggle .theme-icon-dark {
  display: block;
}

[data-theme="dark"] .theme-toggle .theme-icon-light {
  display: none;
}

[data-theme="light"] .theme-toggle .theme-icon-dark {
  display: none;
}

[data-theme="light"] .theme-toggle .theme-icon-light {
  display: block;
}

.theme-icon {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.theme-toggle:hover .theme-icon {
  transform: rotate(15deg);
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 768px) {
  .theme-toggle {
    width: 44px;
    height: 44px;
    top: 80px;
    right: 15px;
  }
  
  .theme-icon {
    width: 18px;
    height: 18px;
  }
}

/* ========================================
   ACCESSIBILITY - RESPECT MOTION PREFERENCE
   ======================================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .theme-toggle,
  .theme-icon {
    transition: none;
  }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
  .theme-toggle {
    display: none !important;
  }
  
  [data-theme="light"] {
    /* Force light theme for printing */
    --color-bg-primary: #ffffff;
    --color-text-primary: #000000;
  }
}