/* CSS Custom Properties for Theming - Cozy Minimalism Style */
:root {
    /* Light Theme - Cozy Minimalism */
    --primary-color: #8B7355;
    --secondary-color: #A0937D;
    --accent-color: #D4C4A8;
    --success-color: #7A8B5A;
    --warning-color: #C4976A;
    
    /* Light Theme Colors */
    --bg-primary: #FEFCFA;
    --bg-secondary: #F9F6F2;
    --bg-tertiary: #F0EBE3;
    --text-primary: #2C2825;
    --text-secondary: #6B6658;
    --text-muted: #9B9184;
    --border-color: #E8E3DD;
    --shadow-light: rgba(44, 40, 37, 0.08);
    --shadow-medium: rgba(44, 40, 37, 0.12);
    --shadow-heavy: rgba(44, 40, 37, 0.20);
    --warm-accent: #B8956A;
    --soft-beige: #F0EBE3;
    --cream: #F7F4F0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-hero: linear-gradient(135deg, #000000 0%, #ffffff 100%);
    --gradient-warm: linear-gradient(135deg, #F7F4F0 0%, #F0EBE3 100%);
    
    /* Transitions */
    --transition-fast: 0.2s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
    
    /* Font Weights */
    --weight-light: 300;
    --weight-normal: 400;
    --weight-medium: 500;
    --weight-semibold: 600;
    --weight-bold: 700;
}

/* Dark Theme - Warm Dark Minimalism */
[data-theme="dark"] {
    --primary-color: #C4A57B;
    --secondary-color: #A68B5B;
    --accent-color: #E8D5B7;
    --success-color: #8FA267;
    --warning-color: #D4A574;
    
    --bg-primary: #1F1D1A;
    --bg-secondary: #2A2722;
    --bg-tertiary: #363027;
    --text-primary: #F5F3F0;
    --text-secondary: #C7C1B8;
    --text-muted: #A19A90;
    --border-color: #3D3A33;
    --shadow-light: rgba(0, 0, 0, 0.25);
    --shadow-medium: rgba(0, 0, 0, 0.35);
    --shadow-heavy: rgba(0, 0, 0, 0.50);
    
    --warm-accent: #D4A574;
    --soft-beige: #363027;
    --cream: #2A2722;
    
    /* Dark theme gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-hero: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    --gradient-warm: linear-gradient(135deg, #2A2722 0%, #363027 100%);
}

/* Theme transition for smooth switching */
* {
    transition: background-color var(--transition-normal), 
                color var(--transition-normal),
                border-color var(--transition-normal),
                box-shadow var(--transition-normal);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--shadow-medium);
}

.theme-toggle i {
    font-size: 16px;
    transition: transform var(--transition-normal);
}

.theme-toggle:hover i {
    transform: rotate(180deg);
}

/* Fade Transition for Page Changes */
.page-transition {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.page-transition.active {
    opacity: 1;
    transform: translateY(0);
}

/* Loading Animation */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    color: var(--text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-md);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Scroll Reveal Animations */
.reveal {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

/* Staggered Animation Delays */
.reveal:nth-child(1) { transition-delay: 0.1s; }
.reveal:nth-child(2) { transition-delay: 0.2s; }
.reveal:nth-child(3) { transition-delay: 0.3s; }
.reveal:nth-child(4) { transition-delay: 0.4s; }
.reveal:nth-child(5) { transition-delay: 0.5s; }
.reveal:nth-child(6) { transition-delay: 0.6s; }

/* Hover Animations */
.hover-lift {
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

.hover-scale {
    transition: transform var(--transition-normal);
}

.hover-scale:hover {
    transform: scale(1.05);
}

/* Pulse Animation */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(52, 152, 219, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(52, 152, 219, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(52, 152, 219, 0);
    }
}

/* Floating Animation */
.float {
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Slide In Animations */
@keyframes slideInLeft {
    0% {
        opacity: 0;
        transform: translateX(-100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(100px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    0% {
        opacity: 0;
        transform: translateY(100px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

/* Animation Classes */
.animate-slideInLeft {
    animation: slideInLeft 0.8s ease-out;
}

.animate-slideInRight {
    animation: slideInRight 0.8s ease-out;
}

.animate-slideInUp {
    animation: slideInUp 0.8s ease-out;
}

.animate-fadeIn {
    animation: fadeIn 0.8s ease-out;
}

/* Progress Bar Animation */
.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 1.5s ease-out;
    border-radius: var(--radius-sm);
}

.progress-fill.animate {
    width: var(--progress-width, 75%);
}

/* Responsive Design Helpers */
@media (max-width: 768px) {
    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        transform: none;
        opacity: 1;
    }
    
    .hover-lift:hover,
    .hover-scale:hover {
        transform: none;
    }
}