/* ===================================
   THEME SYSTEM - Dark & Light Mode
   =================================== */

:root {
    /* Light Mode Colors (Default) */
    --primary-color: #667eea;
    --primary-dark: #5568d3;
    --primary-light: #7f8ff1;
    
    --secondary-color: #50C878;
    --secondary-dark: #3DAF63;
    --secondary-light: #6DD48E;
    
    --accent-color: #FF6B6B;
    --accent-dark: #E85555;
    --accent-light: #FF8585;
    
    --background-color: #F8F9FA;
    --background-secondary: #FFFFFF;
    --background-tertiary: #F1F3F5;
    
    --text-color: #2C3E50;
    --text-secondary: #546E7A;
    --text-muted: #90A4AE;
    
    --border-color: #E1E8ED;
    --border-focus: #4A90E2;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    --card-bg: #FFFFFF;
    --card-hover-bg: #F8F9FA;
    
    --input-bg: #FFFFFF;
    --input-border: #D1D9E0;
    --input-focus-border: #4A90E2;
    
    --success-color: #50C878;
    --warning-color: #FFA726;
    --error-color: #EF5350;
    --info-color: #42A5F5;
    
    --overlay-bg: rgba(0, 0, 0, 0.5);
    --glass-bg: rgba(255, 255, 255, 0.9);
    --glass-border: rgba(255, 255, 255, 0.2);
    
    /* Gradient Variables */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-light: #f8f9ff;
    --text-primary: #2d3748;
    --text-light: #ffffff;
    
    --transition-speed: 0.3s;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary-color: #7f8ff1;
    --primary-dark: #667eea;
    --primary-light: #9aa3f5;
    
    --secondary-color: #5FDB8D;
    --secondary-dark: #50C878;
    --secondary-light: #7EE5A3;
    
    --accent-color: #FF7B7B;
    --accent-dark: #FF6B6B;
    --accent-light: #FF9595;
    
    --background-color: #1A1D23;
    --background-secondary: #23262D;
    --background-tertiary: #2C2F38;
    
    --text-color: #E8EAED;
    --text-secondary: #B8BCC3;
    --text-muted: #888C94;
    
    --border-color: #3A3D45;
    --border-focus: #5BA3F5;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    
    --card-bg: #23262D;
    --card-hover-bg: #2C2F38;
    
    --input-bg: #2C2F38;
    --input-border: #3A3D45;
    --input-focus-border: #5BA3F5;
    
    --success-color: #5FDB8D;
    --warning-color: #FFB84D;
    --error-color: #FF6B6B;
    --info-color: #5BA3F5;
    
    --overlay-bg: rgba(0, 0, 0, 0.7);
    --glass-bg: rgba(35, 38, 45, 0.9);
    --glass-border: rgba(255, 255, 255, 0.1);
    
    /* Dark Mode Gradients */
    --gradient-primary: linear-gradient(135deg, #7f8ff1 0%, #8b6cc7 100%);
    --gradient-bg: linear-gradient(135deg, #7f8ff1 0%, #8b6cc7 100%);
    --bg-light: #2C2F38;
    --text-primary: #E8EAED;
    --text-light: #ffffff;
}

/* Global Theme Transitions */
* {
    transition: background-color var(--transition-speed) ease,
                color var(--transition-speed) ease,
                border-color var(--transition-speed) ease,
                box-shadow var(--transition-speed) ease;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
}

/* Theme Toggle Button Styles */
.theme-toggle {
    position: relative;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--background-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 6px 12px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    margin-left: 16px;
}

.theme-toggle:hover {
    background: var(--card-hover-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.theme-toggle i {
    font-size: 16px;
    color: var(--text-secondary);
    transition: all var(--transition-speed) ease;
}

.theme-toggle:hover i {
    color: var(--primary-color);
}

.theme-toggle .fa-sun {
    color: #FFA726;
}

.theme-toggle .fa-moon {
    color: #5BA3F5;
}

[data-theme="dark"] .theme-toggle .fa-sun {
    opacity: 0.5;
}

[data-theme="light"] .theme-toggle .fa-moon {
    opacity: 0.5;
}

/* Language Switcher Styles */
.language-switcher {
    position: relative;
    margin-left: 12px;
}

.language-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--background-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 6px 14px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    color: var(--text-color);
    font-size: 14px;
    font-weight: 500;
}

.language-btn:hover {
    background: var(--card-hover-bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.language-btn i {
    font-size: 16px;
    color: var(--text-secondary);
}

.language-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-speed) ease;
    z-index: 1001;
    overflow: hidden;
}

.language-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.language-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-color);
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
}

.language-option:last-child {
    border-bottom: none;
}

.language-option:hover {
    background: var(--background-tertiary);
}

.language-option.active {
    background: var(--primary-color);
    color: white;
    font-weight: 600;
}

.language-option .flag {
    font-size: 20px;
    width: 24px;
    text-align: center;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .theme-toggle {
        padding: 5px 10px;
        margin-left: 8px;
    }
    
    .theme-toggle i {
        font-size: 14px;
    }
    
    .language-btn {
        padding: 5px 10px;
        font-size: 13px;
    }
    
    .language-dropdown {
        right: -10px;
    }
}

/* RTL Support for Arabic */
[dir="rtl"] .theme-toggle,
[dir="rtl"] .language-switcher {
    margin-left: 0;
    margin-right: 16px;
}

[dir="rtl"] .language-dropdown {
    right: auto;
    left: 0;
}

/* Smooth Theme Transition Animation */
@keyframes themeTransition {
    0% {
        opacity: 0.8;
    }
    100% {
        opacity: 1;
    }
}

body.theme-transitioning {
    animation: themeTransition 0.3s ease;
}