/**
 * Main Styles for "Sab Kuch Theek Hai" website
 * Non-critical CSS loaded asynchronously
 */

/* Container and Layout */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-narrow {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container-wide {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

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

.flex-wrap {
    flex-wrap: wrap;
}

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

.items-start {
    align-items: flex-start;
}

.items-end {
    align-items: flex-end;
}

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

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

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

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.gap-xl {
    gap: var(--space-xl);
}

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.py-sm { padding: var(--space-sm) 0; }
.py-md { padding: var(--space-md) 0; }
.py-lg { padding: var(--space-lg) 0; }
.py-xl { padding: var(--space-xl) 0; }
.py-2xl { padding: var(--space-2xl) 0; }

.px-sm { padding: 0 var(--space-sm); }
.px-md { padding: 0 var(--space-md); }
.px-lg { padding: 0 var(--space-lg); }
.px-xl { padding: 0 var(--space-xl); }

/* Text Utilities */
.text-center {
    text-align: center;
}

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

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

.text-primary {
    color: var(--text-primary);
}

.text-secondary {
    color: var(--text-secondary);
}

.text-muted {
    color: var(--text-muted);
}

.text-accent {
    color: var(--accent);
}

.font-light {
    font-weight: 300;
}

.font-normal {
    font-weight: 400;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

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

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

.bg-tertiary {
    background-color: var(--bg-tertiary);
}

/* Sections */
section {
    padding: var(--space-3xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    text-align: center;
    margin-bottom: var(--space-2xl);
    color: var(--primary);
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 60px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
    transform: translateX(-50%);
}

/* Features Section */
.features {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-medium);
    text-align: center;
    transition: all var(--transition-medium);
    border: 1px solid var(--border-light);
}

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

.feature-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--space-md);
    display: block;
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
    color: var(--primary);
}

.feature-card p {
    margin-bottom: var(--space-lg);
    line-height: var(--line-height-loose);
}

.feature-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.feature-link:hover {
    color: var(--accent-light);
    transform: translateX(5px);
}

/* About Preview */
.about-preview {
    text-align: center;
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.about-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-loose);
    margin-bottom: var(--space-xl);
}

.about-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent);
    font-weight: 600;
    text-decoration: none;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
}

.about-link:hover {
    color: var(--accent-light);
    transform: translateX(5px);
}

/* Footer */
.site-footer {
    background: var(--primary);
    color: var(--text-inverse);
    padding: var(--space-3xl) 0 var(--space-xl);
    margin-top: var(--space-3xl);
}

.footer-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-2xl);
}

.footer-section h3 {
    color: var(--text-inverse);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-lg);
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li {
    margin-bottom: var(--space-sm);
}

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

.footer-nav a:hover {
    color: var(--text-inverse);
}

.social-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.social-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: var(--space-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.social-links a:hover {
    color: var(--text-inverse);
    background: rgba(255, 255, 255, 0.1);
}

.footer-bottom {
    text-align: center;
    padding: var(--space-xl) var(--space-md) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    margin-top: var(--space-xl);
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom p {
    margin: var(--space-sm) 0;
    color: inherit;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-medium);
    font-size: var(--font-size-base);
    line-height: 1;
    gap: var(--space-sm);
    justify-content: center;
    min-height: 44px; /* Touch target minimum */
}

.btn:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--accent);
    color: var(--text-inverse);
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-dark);
}

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

.btn-outline:hover {
    background: var(--accent);
    color: var(--text-inverse);
}

/* Forms */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    min-height: 44px; /* Touch target minimum */
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(210, 105, 30, 0.1);
}

.form-input.invalid,
.form-textarea.invalid,
.form-select.invalid {
    border-color: #dc2626;
}

.form-input.valid,
.form-textarea.valid,
.form-select.valid {
    border-color: #059669;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.field-error {
    color: #dc2626;
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
    display: block;
}

.field-error[hidden] {
    display: none;
}

/* Form Messages */
.form-message {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-large);
    z-index: 1000;
    max-width: 400px;
    font-weight: 500;
}

.form-message.success {
    background: #10b981;
    color: white;
}

.form-message.error {
    background: #dc2626;
    color: white;
}

.form-message.info {
    background: var(--accent);
    color: white;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-medium);
    padding: var(--space-xl);
    border: 1px solid var(--border-light);
    transition: all var(--transition-medium);
}

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

.card-header {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-light);
}

.card-title {
    margin: 0;
    font-size: var(--font-size-xl);
    color: var(--primary);
}

.card-meta {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    margin-top: var(--space-sm);
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.card-content {
    line-height: var(--line-height-loose);
}

/* Loading States */
.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--border-light);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Animation Classes */
.animated {
    animation-duration: 0.5s;
    animation-fill-mode: both;
}

.fade-in {
    opacity: 0;
}

.fade-in.animated {
    animation-name: fadeIn;
}

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

.slide-up {
    transform: translateY(30px);
    opacity: 0;
}

.slide-up.animated {
    animation-name: slideUp;
}

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

/* Lazy Loading */
.lazy-placeholder {
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.lazy-placeholder::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: shimmer 1.5s infinite;
}

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

.lazy-loaded {
    animation: fadeIn 0.3s ease-out;
}

.lazy-error {
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* Keyboard Navigation */
.keyboard-navigation *:focus {
    outline: 2px solid var(--accent) !important;
    outline-offset: 2px !important;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--space-lg);
    }
    
    .footer-content {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--space-xl);
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .feature-card {
        padding: var(--space-xl);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .form-message {
        left: var(--space-md);
        right: var(--space-md);
        max-width: none;
    }
}

@media (max-width: 480px) {
    section {
        padding: var(--space-2xl) 0;
    }
    
    .feature-card {
        padding: var(--space-lg);
    }
    
    .card {
        padding: var(--space-lg);
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .social-links {
        flex-direction: column;
        align-items: center;
    }
}