/* Color Theme Variables */
:root {
    /* Purple Theme (Default) - Subtle 3D */
    --primary-color: #6b46c1;
    --primary-light: #7c3aed;
    --primary-dark: #4c1d95;
    --secondary-color: #00bfff;
    --accent-color: #5b21b6;
    
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --bg-quaternary: #0f3460;
    --bg-quinary: #533483;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.9);
    --text-tertiary: rgba(255, 255, 255, 0.8);
    --text-quaternary: rgba(255, 255, 255, 0.7);
    --text-quinary: rgba(255, 255, 255, 0.6);
    
    /* Surface Colors */
    --surface-primary: rgba(255, 255, 255, 0.1);
    --surface-secondary: rgba(255, 255, 255, 0.1);
    --surface-tertiary: rgba(255, 255, 255, 0.2);
    
    /* Border Colors */
    --border-primary: rgba(255, 255, 255, 0.2);
    --border-secondary: rgba(255, 255, 255, 0.1);
    --border-accent: rgba(107, 70, 193, 0.25);
    
    /* Shadow Colors */
    --shadow-primary: rgba(107, 70, 193, 0.2);
    --shadow-secondary: rgba(124, 58, 237, 0.15);
    --shadow-tertiary: rgba(76, 29, 149, 0.08);
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(45deg, var(--primary-color), var(--primary-light), var(--primary-dark), var(--secondary-color));
    --gradient-secondary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    --gradient-bg: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-quaternary) 75%, var(--bg-quinary) 100%);
}

/* Theme Switcher */
.theme-switcher {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.theme-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 25px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-size: 14px;
    font-weight: 500;
    min-width: 100px;
    justify-content: center;
}

.theme-btn:hover {
    background: var(--surface-tertiary);
    border-color: var(--border-accent);
    color: var(--text-primary);
    transform: translateX(-5px);
}

.theme-btn.active {
    background: var(--gradient-secondary);
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 4px 15px var(--shadow-primary);
}

.theme-btn i {
    font-size: 16px;
}

/* Responsive theme switcher */
@media (max-width: 768px) {
    .theme-switcher {
        top: auto;
        bottom: 20px;
        right: 20px;
        flex-direction: row;
        transform: none;
    }
    
    .theme-btn {
        min-width: 80px;
        padding: 10px 12px;
        font-size: 12px;
    }
}

/* Black & White Theme */
.bw-theme {
    /* Black & White Theme Colors */
    --primary-color: #000000;
    --primary-light: #333333;
    --primary-dark: #000000;
    --secondary-color: #666666;
    --accent-color: #999999;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f8f8;
    --bg-tertiary: #f0f0f0;
    --bg-quaternary: #e8e8e8;
    --bg-quinary: #f5f5f5;
    
    /* Text Colors - High contrast for readability */
    --text-primary: #000000;
    --text-secondary: #1a1a1a;
    --text-tertiary: #333333;
    --text-quaternary: #4a4a4a;
    --text-quinary: #666666;
    
    /* Surface Colors */
    --surface-primary: rgba(0, 0, 0, 0.05);
    --surface-secondary: rgba(0, 0, 0, 0.02);
    --surface-tertiary: rgba(0, 0, 0, 0.1);
    
    /* Border Colors */
    --border-primary: rgba(0, 0, 0, 0.2);
    --border-secondary: rgba(0, 0, 0, 0.1);
    --border-accent: rgba(0, 0, 0, 0.3);
    
    /* Shadow Colors */
    --shadow-primary: rgba(0, 0, 0, 0.1);
    --shadow-secondary: rgba(0, 0, 0, 0.05);
    --shadow-tertiary: rgba(0, 0, 0, 0.02);
    
    /* Gradient Colors */
    --gradient-primary: linear-gradient(45deg, var(--primary-color), var(--primary-light), var(--secondary-color), var(--accent-color));
    --gradient-secondary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    --gradient-bg: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-quaternary) 75%, var(--bg-quinary) 100%);
}

/* Black & White Theme Specific Adjustments */
.bw-theme .footer {
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 0.95) 0%, 
        rgba(248, 248, 248, 0.9) 25%, 
        rgba(240, 240, 240, 0.85) 50%, 
        rgba(232, 232, 232, 0.9) 75%, 
        rgba(245, 245, 245, 0.95) 100%);
    border-top: 2px solid var(--border-accent);
}

.bw-theme .footer::before {
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(0, 0, 0, 0.1), transparent),
        radial-gradient(1px 1px at 40px 70px, rgba(0, 0, 0, 0.05), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(0, 0, 0, 0.08), transparent);
}

.bw-theme .service-card {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border-primary);
    box-shadow: 0 4px 15px var(--shadow-primary);
}

bg-black{
    background: rgba(255, 255, 255, 0.8);
}



.bw-theme .service-card:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--border-accent);
    box-shadow: 0 8px 25px var(--shadow-primary);
}

.bw-theme .nav-btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.bw-theme .btn-outline {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.bw-theme .social-link {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--border-primary);
}

.bw-theme .social-link:hover {
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--border-accent);
}

.bw-theme .theme-btn {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-primary);
    color: var(--text-primary);
}

.bw-theme .theme-btn:hover {
    background: rgba(255, 255, 255, 1);
    border-color: var(--border-accent);
}

.bw-theme .theme-btn.active {
    background: var(--primary-color);
    color: var(--bg-primary);
    border-color: var(--primary-color);
}

/* Theme Switcher */
.theme-switcher {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.theme-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 25px;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-size: 14px;
    font-weight: 500;
    min-width: 100px;
    justify-content: center;
}

.theme-btn:hover {
    background: var(--surface-tertiary);
    border-color: var(--border-accent);
    color: var(--text-primary);
    transform: translateX(-5px);
}

.theme-btn.active {
    background: var(--gradient-secondary);
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 4px 15px var(--shadow-primary);
}

.theme-btn i {
    font-size: 16px;
}

/* Responsive theme switcher */
@media (max-width: 768px) {
    .theme-switcher {
        top: auto;
        bottom: 20px;
        right: 20px;
        flex-direction: row;
        transform: none;
    }
    
    .theme-btn {
        min-width: 80px;
        padding: 10px 12px;
        font-size: 12px;
    }
}