/* Custom CSS for Speed Test Website */

:root {
    --primary-color: #007bff;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 10px;
    --box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
}

/* Global Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
}

.min-vh-50 {
    min-height: 50vh;
}

/* Gradient Backgrounds */
.bg-gradient-primary {
    background: var(--primary-gradient) !important;
}

/* Navigation Styles */
.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
}

.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hero Section */
.hero-section {
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
}

.feature-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* Speed Test Widget */
.speed-test-widget .card {
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.user-info {
    border-radius: var(--border-radius);
    background: var(--light-color);
}

.metric-card {
    text-align: center;
    padding: 1rem;
    border-radius: var(--border-radius);
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.metric-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0.5rem 0;
}

/* Progress Bar Animation */
.progress-bar {
    transition: width 0.6s ease;
}

.progress-bar-animated {
    animation: progress-bar-stripes 1s linear infinite;
}

/* Test Status Styles */
.test-status {
    font-weight: 500;
    min-height: 20px;
}

/* Button Styles */
.btn {
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--primary-gradient);
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 123, 255, 0.4);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Card Styles */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.2);
}

/* Feature Cards */
.feature-card {
    padding: 2rem 1rem;
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Step Cards */
.step-card {
    text-align: center;
    padding: 1rem;
}

.step-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin: 0 auto;
}

/* Alphabet Navigation */
.alphabet-nav .btn {
    margin: 0.2rem;
    min-width: 40px;
}

/* ISP Grid */
.isp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* Social Links */
.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: var(--transition);
}

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

/* Footer Styles */
footer {
    background: var(--dark-color) !important;
}

footer h5, footer h6 {
    color: white;
}

footer .text-muted {
    color: #adb5bd !important;
}

footer a.text-muted:hover {
    color: white !important;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section {
        padding: 3rem 0;
    }
    
    .display-4 {
        font-size: 2rem;
    }
    
    .metric-card {
        margin-bottom: 1rem;
    }
    
    .feature-badge {
        margin-bottom: 0.5rem;
    }
    
    .alphabet-nav .btn {
        min-width: 35px;
        font-size: 0.875rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .card-body {
        padding: 1.5rem !important;
    }
    
    .metric-value {
        font-size: 1.5rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

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

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(0, 123, 255, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(0, 123, 255, 0);
    }
}

/* Accordion Styles */
.accordion-button {
    border-radius: var(--border-radius) !important;
    border: none;
    box-shadow: none;
}

.accordion-button:not(.collapsed) {
    background: var(--primary-gradient);
    color: white;
}

.accordion-button:focus {
    box-shadow: none;
}

.accordion-item {
    border-radius: var(--border-radius) !important;
    overflow: hidden;
}

/* Help Options */
.help-option {
    padding: 2rem 1rem;
    text-align: center;
}

/* Share Buttons */
.social-share .btn {
    margin: 0.2rem;
}

/* Breadcrumb */
.breadcrumb {
    background: transparent;
    padding: 0;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--secondary-color);
}

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

.border-gradient {
    border: 2px solid transparent;
    background: linear-gradient(white, white) padding-box, var(--primary-gradient) border-box;
}

/* Print Styles */
@media print {
    .navbar, .footer, .social-share, .btn {
        display: none !important;
    }
    
    .hero-section {
        background: white !important;
        color: black !important;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0056b3;
        --box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.3);
    }
}

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