/* 
 * IV Help Community - Custom Styles
 * @author Isaque Victor
 */

/* Reset and Base Styles */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* Custom Properties (CSS Variables) */
:root {
    --primary-color: #6f42c1;
    --secondary-color: #0d6efd;
    --accent-color: #fd7e14;
    --success-color: #198754;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #0dcaf0;
    --dark-color: #1a1a1a;
    --light-color: #f8f9fa;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-warning: linear-gradient(135deg, #fdbb2d 0%, #b21f1f 100%);
    --gradient-info: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    --shadow-xl: 0 16px 32px rgba(0,0,0,0.2);
    
    /* Borders */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Typography */
.display-1, .display-2, .display-3, .display-4, .display-5, .display-6 {
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.lead {
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* Utility Classes */
.gradient-bg {
    background: var(--gradient-primary);
}

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

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

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

.backdrop-blur {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* Buttons */
.btn {
    font-weight: 600;
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: none;
    text-transform: none;
    letter-spacing: 0.025em;
}

.btn-gradient {
    background: var(--gradient-primary);
    color: white;
    border: none;
}

.btn-gradient:hover {
    background: var(--gradient-secondary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-outline-gradient {
    background: transparent;
    border: 2px solid transparent;
    background-clip: padding-box;
    position: relative;
}

.btn-outline-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    border-radius: inherit;
    z-index: -1;
    margin: -2px;
}

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

/* Cards */
.card {
    border: none;
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.card-gradient {
    background: var(--gradient-primary);
    color: white;
}

.card-gradient .card-body {
    position: relative;
    z-index: 2;
}

.card-gradient::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    z-index: 1;
}

/* Navigation */
.navbar {
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

.nav-link {
    font-weight: 500;
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    transform: translateY(-1px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-primary);
    color: white;
    position: relative;
    overflow: hidden;
}

.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 1000 1000"><polygon fill="%23ffffff" fill-opacity="0.1" points="0,1000 1000,0 1000,1000"/></svg>');
    z-index: 1;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: float 20s ease-in-out infinite;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-10px) rotate(1deg); }
    50% { transform: translateY(-20px) rotate(-1deg); }
    75% { transform: translateY(-10px) rotate(1deg); }
}

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

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

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

.animate-slide-down {
    animation: slideInDown 0.8s ease-out;
}

.animate-zoom-in {
    animation: zoomIn 0.8s ease-out;
}

/* Stats Section */
.stat-card {
    text-align: center;
    padding: 2rem;
    transition: all var(--transition-normal);
}

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

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-color);
    line-height: 1;
    margin-bottom: 0.5rem;
}

/* Section Spacing */
.section-padding {
    padding: 100px 0;
}

.section-padding-sm {
    padding: 60px 0;
}

.section-padding-lg {
    padding: 120px 0;
}

/* Background Utilities */
.bg-gradient-primary {
    background: var(--gradient-primary);
}

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

.bg-light-subtle {
    background-color: rgba(248, 249, 250, 0.5);
}

.bg-dark-subtle {
    background-color: rgba(33, 37, 41, 0.95);
}

/* Footer */
footer {
    background: var(--dark-color);
    color: var(--light-color);
}

footer a {
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition: all var(--transition-fast);
}

footer a:hover {
    color: white;
    transform: translateY(-1px);
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: all var(--transition-normal);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .section-padding {
        padding: 80px 0;
    }
    
    .display-1 {
        font-size: 3rem;
    }
}

@media (max-width: 992px) {
    .section-padding {
        padding: 60px 0;
    }
    
    .display-1 {
        font-size: 2.5rem;
    }
    
    .hero-section {
        min-height: 80vh;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: 40px 0;
    }
    
    .display-1 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 1.1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .hero-section {
        min-height: 70vh;
        text-align: center;
    }
}

@media (max-width: 576px) {
    .section-padding {
        padding: 30px 0;
    }
    
    .display-1 {
        font-size: 1.8rem;
    }
    
    .display-4 {
        font-size: 1.5rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Focus States */
.btn:focus,
.form-control:focus,
.form-select:focus {
    box-shadow: 0 0 0 0.2rem rgba(111, 66, 193, 0.25);
    border-color: var(--primary-color);
}

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

/* Print Styles */
@media print {
    .navbar,
    footer,
    .btn,
    [data-aos] {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.4;
    }
    
    .container {
        max-width: none;
        width: 100%;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Selection */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}