/**
 * NINAUN QUIZ WORKER - Main Stylesheet
 * Blue + White + Black theme, mobile-first responsive
 */

:root {
    --primary: #007bff;
    --primary-dark: #0056b3;
    --secondary: #6c757d;
    --success: #28a745;
    --info: #17a2b8;
    --warning: #ffc107;
    --danger: #dc3545;
    --light: #f8f9fa;
    --dark: #212529;
    --black: #000;
    --white: #fff;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--white);
    color: var(--dark);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: rgba(255,255,255,0.03);
    transform: rotate(15deg);
}

.hero-stats-card {
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
}

/* Cards */
.hover-card {
    transition: all 0.3s ease;
}

.hover-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1) !important;
}

/* Navbar */
.navbar-brand {
    font-size: 1.4rem;
    letter-spacing: -0.5px;
}

/* Buttons */
.btn {
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

/* Forms */
.form-control, .input-group-text {
    border-radius: 8px;
}

.form-control:focus {
    box-shadow: 0 0 0 3px rgba(0,123,255,0.15);
    border-color: var(--primary);
}

/* Animations */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.card {
    animation: fadeInUp 0.5s ease-out;
    border-radius: 12px;
}

/* Custom Login & Register Buttons */
.login-btn {
    background-color: #ffffff !important;
    color: #ffc107 !important; /* Yellow color */
    border-radius: 5px;
    padding: 8px 20px !important;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background-color: #f8f9fa !important;
    color: #ffca2c !important;
    transform: translateY(-1px);
}

.register-btn {
    background-color: #ffc107 !important; /* Yellow background */
    color: #ffffff !important; /* White text */
    border-radius: 5px;
    padding: 8px 20px !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.register-btn:hover {
    background-color: #ffca2c !important;
    color: #ffffff !important;
    transform: translateY(-1px);
}

/* Remove default btn styling that might interfere */
.register-btn.btn-light {
    background-color: #ffc107 !important;
    color: #ffffff !important;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    .hero-stats-card {
        margin-top: 2rem;
    }
}

/* Loading spinner */
.spinner {
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
}

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