/* Free Basic Mining - Professional Crypto Style
================================================== */

:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7c3aed;
    --dark-bg: #0a0e27;
    --dark-card: #151938;
    --darker: #080b1f;
    --text-light: #e0e7ff;
    --text-muted: #94a3b8;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #1e293b;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark-bg);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Background Animation */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, var(--darker) 0%, var(--dark-bg) 100%);
}

.bg-animation::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    animation: bgMove 20s ease-in-out infinite;
}

@keyframes bgMove {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-50px, -50px); }
}

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

/* Header/Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px 0;
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: var(--text-light);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--primary);
}

.btn-login {
    padding: 10px 25px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.3);
}

/* Hero Section */
.hero {
    padding: 150px 0 100px;
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.hero .subtitle {
    font-size: 24px;
    color: var(--text-muted);
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero .highlight {
    color: var(--primary);
    font-weight: 700;
}

/* Features Grid */
.features {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 212, 255, 0.15);
    border-color: var(--primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-light);
}

.feature-card p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* Requirements Section */
.requirements {
    padding: 80px 0;
    background: var(--darker);
}

.requirements h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.req-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.req-item {
    background: var(--dark-card);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
}

.req-item .icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.req-item h4 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary);
}

/* Registration Form */
.registration-section {
    padding: 80px 0;
}

.registration-section h2 {
    text-align: center;
    font-size: 42px;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-wrapper {
    max-width: 600px;
    margin: 50px auto;
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-light);
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 15px;
    background: var(--darker);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-light);
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.btn-submit {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.4);
}

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

.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-info {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--primary);
    color: var(--primary);
}

/* Footer */
.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.8s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }
    
    .hero .subtitle {
        font-size: 18px;
    }
    
    .features-grid,
    .req-grid {
        grid-template-columns: 1fr;
    }
    
    .form-wrapper {
        padding: 30px;
    }
    
    .nav-links {
        display: none;
    }
}

/* Dashboard Specific Styles */
.dashboard {
    padding: 100px 0 50px;
    min-height: 100vh;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.dashboard-header h1 {
    font-size: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.user-info {
    display: flex;
    gap: 20px;
    align-items: center;
}

.btn-logout {
    padding: 12px 30px;
    background: transparent;
    border: 2px solid var(--danger);
    border-radius: 8px;
    color: var(--danger);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-logout:hover {
    background: var(--danger);
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s, border-color 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.stat-info h3 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.stat-info p {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-light);
}

.reflink-card {
    background: var(--dark-card);
    border: 2px solid var(--primary);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 40px;
}

.reflink-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: var(--primary);
}

.reflink-input-group {
    display: flex;
    gap: 10px;
}

.reflink-input-group input {
    flex: 1;
    padding: 15px;
    background: var(--darker);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-light);
    font-family: monospace;
}

.btn-copy {
    padding: 15px 30px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border: none;
    border-radius: 10px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s;
}

.btn-copy:hover {
    transform: scale(1.05);
}

.referrals-table {
    background: var(--dark-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
}

.referrals-table h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--text-light);
}

table {
    width: 100%;
    border-collapse: collapse;
}

table thead {
    background: var(--darker);
}

table th,
table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

table th {
    color: var(--primary);
    font-weight: 600;
}

table td {
    color: var(--text-light);
}

table tbody tr:hover {
    background: var(--darker);
}

.badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

/* Admin Specific Styles */
.action-buttons {
    display: flex;
    gap: 10px;
}

.btn-small {
    padding: 8px 15px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn-small:hover {
    transform: scale(1.05);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
}

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

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

.checkbox-cell {
    text-align: center;
}

.checkbox-cell input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary);
}