/* Main Styles - Dark Purple Theme */
:root {
    /* Colors */
    --primary-purple: #7C3AED;
    --primary-dark: #5B21B6;
    --primary-light: #A78BFA;
    --secondary-purple: #8B5CF6;
    --accent-purple: #9333EA;
    
    --bg-dark: #0F0817;
    --bg-dark-secondary: #1A0F2E;
    --bg-dark-tertiary: #2D1B69;
    --bg-card: #1E1B2E;
    
    --text-primary: #FFFFFF;
    --text-secondary: #C4B5FD;
    --text-muted: #9CA3AF;
    
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    --glow-purple: rgba(124, 58, 237, 0.6);
    --glow-purple-intense: rgba(147, 51, 234, 0.8);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Borders & Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--glow-purple);
    --shadow-glow-intense: 0 0 30px var(--glow-purple-intense);
    
    /* Z-index */
    --z-base: 10;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-popover: 400;
    --z-toast: 500;
    --z-tooltip: 600;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    height: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    min-height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

/* Background Effects */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 20% 50%, var(--bg-dark-tertiary) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, var(--bg-dark-secondary) 0%, transparent 50%),
                radial-gradient(circle at 40% 20%, var(--bg-dark-secondary) 0%, transparent 50%);
    z-index: -1;
    opacity: 0.5;
}

#app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-purple);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    outline: none;
    position: relative;
    z-index: 10;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-purple), var(--accent-purple));
    color: var(--text-primary);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow-intense);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-light);
    border: 2px solid var(--primary-purple);
}

.btn-secondary:hover {
    background: var(--primary-purple);
    color: var(--text-primary);
    box-shadow: var(--shadow-glow);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-icon {
    padding: var(--spacing-sm);
    width: 40px;
    height: 40px;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

input, textarea, select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    outline: none;
    position: relative;
    z-index: 10;
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 2px solid rgba(124, 58, 237, 0.3);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    outline: none;
    position: relative;
    z-index: 10;
}

.form-control:focus {
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

input:focus, textarea:focus, select:focus {
    border-color: var(--primary-purple);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

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

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity var(--transition-slow);
}

.loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-logo {
    margin-bottom: var(--spacing-2xl);
    animation: pulse 2s infinite;
}

.logo-cards {
    position: relative;
    width: 120px;
    height: 100px;
}

.card-left, .card-right {
    position: absolute;
    width: 60px;
    height: 84px;
    border: 3px solid var(--primary-purple);
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--bg-dark-secondary), var(--bg-dark-tertiary));
    box-shadow: var(--shadow-glow);
}

.card-left {
    left: 15px;
    transform: rotate(-10deg);
    z-index: 1;
}

.card-right {
    right: 15px;
    top: -10px;
    transform: rotate(10deg);
    z-index: 2;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--bg-dark-secondary);
    border-top-color: var(--primary-purple);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes slideInRight {
    from { transform: translateX(100%); }
    to { transform: translateX(0); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 10px var(--glow-purple); }
    50% { box-shadow: 0 0 20px var(--glow-purple-intense); }
}

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}