/* ===================================
   GAMINE AI - OPTIMIZED STYLES
   =================================== */

/* ==== CSS VARIABLES ==== */
:root {
    /* Colors */
    --primary: #0891b2;
    --primary-dark: #0e7490;
    --primary-light: #67e8f9;
    --secondary: #7c3aed;
    --secondary-dark: #6d28d9;
    --accent: #f59e0b;
    --accent-dark: #d97706;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    
    /* Neutral Colors */
    --white: #ffffff;
    --black: #000000;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    --gradient-hero: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 60%, #ec4899 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent) 0%, var(--danger) 100%);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Typography */
    --font-family: '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: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1050;
    --z-tooltip: 1070;
}

/* ==== RESET & BASE STYLES ==== */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==== TYPOGRAPHY ==== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--gray-900);
}

.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
    font-weight: 800;
    letter-spacing: -0.02em;
}

.lead {
    font-weight: 400;
    font-size: var(--font-size-lg);
    line-height: 1.7;
}

.text-gradient {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Enhanced headings with gradients */
h1, h2 {
    background: var(--gradient-hero);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h3, h4 { color: var(--primary); }
h5, h6 { color: var(--secondary); }

/* ==== LINKS ==== */
a {
    color: var(--primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

/* Main content links with underline effect */
.container a:not(.btn):not(.navbar-brand):not(.nav-link):not(.footer-link) {
    color: var(--primary);
    font-weight: 500;
    display: inline-block;
}

.container a:not(.btn):not(.navbar-brand):not(.nav-link):not(.footer-link)::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-fast);
}

.container a:not(.btn):not(.navbar-brand):not(.nav-link):not(.footer-link):hover::after {
    width: 100%;
}

/* ==== NAVIGATION ==== */
.navbar {
    backdrop-filter: blur(20px);
    background: rgba(255, 255, 255, 0.9);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
    box-shadow: var(--shadow-lg);
    background: rgba(255, 255, 255, 0.95);
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary);
    transition: all var(--transition-fast);
}

.navbar-brand:hover {
    color: var(--primary-dark);
    transform: scale(1.05);
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: var(--gray-700);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--primary);
    background: var(--primary-light);
    background-opacity: 0.1;
}

.navbar-toggler {
    border: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-toggler:hover {
    background: var(--gray-100);
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.25);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 2px solid var(--primary-light);
    transition: all var(--transition-fast);
}

.user-avatar:hover {
    transform: scale(1.1);
}

/* ==== HERO SECTION ==== */
.hero-section {
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
    padding: 5rem 0;
    margin-top: 76px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to top, var(--white), transparent);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-content .lead {
    font-size: var(--font-size-lg);
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.hero-stats {
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-item {
    transition: all var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-2px);
}

/* ==== CARDS ==== */
.card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-body {
    padding: var(--spacing-xl);
}

.feature-icon {
    transition: all var(--transition-normal);
}

.card:hover .feature-icon {
    transform: scale(1.1);
}

/* ==== BUTTONS ==== */
.btn {
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    transition: all var(--transition-normal);
    transform: translate(-50%, -50%);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

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

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

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.25);
}

/* Button variants */
.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
}

.btn-warning {
    background: var(--gradient-accent);
    color: var(--white);
}

.btn-warning:hover {
    background: var(--accent-dark);
    color: var(--white);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-success:hover {
    background: var(--success);
    filter: brightness(1.1);
    color: var(--white);
}

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

.btn-outline-primary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-outline-light {
    border: 2px solid var(--white);
    color: var(--white);
    background: transparent;
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary);
}

.btn-outline-secondary {
    border: 2px solid var(--gray-400);
    color: var(--gray-600);
    background: transparent;
}

.btn-outline-secondary:hover {
    background: var(--gray-400);
    color: var(--white);
}

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

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-loading {
    pointer-events: none;
}

.btn-loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-sm);
}

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

/* ==== FORMS ==== */
.form-control {
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.1);
    outline: none;
}

.form-control.is-valid {
    border-color: var(--success);
}

.form-control.is-invalid {
    border-color: var(--danger);
}

.form-label {
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: var(--spacing-sm);
}

.form-text {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* ==== UTILITIES ==== */
.section-padding {
    padding: var(--spacing-2xl) 0;
}

.bg-gradient-primary {
    background: var(--gradient-primary);
}

.shadow-custom {
    box-shadow: var(--shadow-xl);
}

.hover-lift {
    transition: all var(--transition-normal);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

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

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

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-accent { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-info { color: var(--info); }

/* ==== ANIMATIONS ==== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 0.6s ease-out forwards;
}

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

/* ==== FOOTER ==== */
footer {
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--white), transparent);
}

footer h5, footer h6 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

footer a {
    color: rgba(255, 255, 255, 0.8);
    transition: all var(--transition-fast);
    text-decoration: none;
}

footer a:hover {
    color: var(--white);
    transform: translateX(5px);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-links a:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.2);
    margin: var(--spacing-xl) 0;
}

.footer-heart {
    animation: heartbeat 2s infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

/* Social media brand colors */
.icon-twitter:hover i { color: #1da1f2; }
.icon-facebook:hover i { color: #1877f3; }
.icon-instagram:hover i { color: #e4405f; }
.icon-linkedin:hover i { color: #0077b5; }
.icon-github:hover i { color: #ffffff; }

/* ==== LOADING & SPINNERS ==== */
.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary);
    border-radius: var(--radius-full);
    animation: spin 1s linear infinite;
}

/* ==== SCROLLBAR ==== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* ==== RESPONSIVE DESIGN ==== */
@media (max-width: 1200px) {
    .hero-content h1 {
        font-size: clamp(2rem, 4vw, 3rem);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-2xl: 2rem;
    }
    
    .hero-section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero-content h1 {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .navbar-nav .nav-link {
        padding: var(--spacing-md);
    }
    
    .card-body {
        padding: var(--spacing-lg);
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-content h1 {
        font-size: clamp(1.5rem, 8vw, 2rem);
    }
    
    .section-padding {
        padding: var(--spacing-xl) 0;
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .btn-lg {
        padding: var(--spacing-md) var(--spacing-lg);
    }
}

/* ==== DARK MODE SUPPORT ==== */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #1f2937;
        --gray-100: #374151;
        --gray-800: #f3f4f6;
        --gray-900: #ffffff;
        --white: #111827;
    }
    
    body {
        background-color: var(--gray-50);
        color: var(--gray-800);
    }
    
    .card {
        background: var(--gray-100);
        color: var(--gray-800);
    }
}

/* ==== ACCESSIBILITY ==== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

*:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.btn:focus,
.form-control:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.25);
}

/* ==== PRINT STYLES ==== */
@media print {
    .navbar,
    .hero-section,
    footer,
    .btn {
        display: none;
    }
    
    * {
        background: white !important;
        color: black !important;
    }
}