/* Base Styles */
:root {
    --primary-color: #4361ee;
    --secondary-color: #3a0ca3;
    --accent-color: #4cc9f0;
    --success-color: #4ade80;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --gray-color: #94a3b8;
    --border-radius: 12px;
    --box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header & Navigation */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--box-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.nav-links a:hover,
.nav-links a.active {
    background-color: var(--primary-color);
    color: white;
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Points Display */
.points-display {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
}

.points-display i {
    font-size: 1.2rem;
}

.ad-value {
    margin-left: auto;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* Levels Grid */
.levels-container {
    margin-top: 2rem;
}

.section-title {
    text-align: center;
    color: white;
    margin-bottom: 2rem;
    font-size: 2rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.level-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.level-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.level-card.locked {
    opacity: 0.7;
    filter: grayscale(0.5);
}

.level-card.locked::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.level-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.level-name {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
}

.level-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.level-details {
    margin: 1rem 0;
}

.level-points {
    font-size: 1.1rem;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.level-ads {
    font-size: 1rem;
    color: var(--gray-color);
}

.lock-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 3rem;
    color: white;
    z-index: 1;
    opacity: 0.8;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-family: 'Poppins', sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

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

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

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

.btn-block {
    width: 100%;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

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

/* Toast Notification */
.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--dark-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    z-index: 10000;
    transform: translateX(150%);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    display: none;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray-color);
    border-radius: var(--border-radius);
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Footer */
.footer {
    background: var(--dark-color);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

/* Auth Pages */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.auth-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--box-shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header .logo-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.auth-form {
    margin-bottom: 1.5rem;
}

.auth-links {
    text-align: center;
    margin-top: 1.5rem;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Dashboard */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--box-shadow);
    text-align: center;
}

.stat-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Request Page */
.request-form-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-top: 2rem;
}

.info-box {
    background: #e3f2fd;
    border-left: 4px solid var(--primary-color);
    padding: 1rem;
    margin-bottom: 2rem;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.file-upload {
    border: 2px dashed var(--gray-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.file-upload:hover {
    border-color: var(--primary-color);
}

.file-upload-label {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.file-upload-label:hover {
    background: var(--secondary-color);
}

/* Ads Viewer */
.ads-viewer-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-top: 2rem;
}

.ad-display-area {
    background: #f5f5f5;
    border-radius: var(--border-radius);
    padding: 3rem;
    text-align: center;
    margin: 2rem 0;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.countdown-timer {
    margin-top: 2rem;
}

.timer-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    margin: 0 auto;
}

.ad-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 2rem 0;
}

.completion-message {
    background: var(--success-color);
    color: white;
    padding: 1rem;
    border-radius: var(--border-radius);
    text-align: center;
    margin-top: 1rem;
    display: none;
}

.completion-message.show {
    display: block;
}

/* Progress Bar */
.progress-container {
    margin: 2rem 0;
}

.progress-bar {
    height: 10px;
    background: #e5e7eb;
    border-radius: 5px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 5px;
    transition: width 0.3s ease;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--box-shadow);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .levels-grid {
        grid-template-columns: 1fr;
    }
    
    .ad-controls {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
}