/* Investment App - Gold and Black Theme */
:root {
    --primary-gold: #FFD700;
    --secondary-gold: #B8860B;
    --dark-gold: #8B7355;
    --primary-black: #1a1a1a;
    --secondary-black: #2d2d2d;
    --accent-black: #404040;
    --text-light: #f5f5f5;
    --text-gold: #FFD700;
    --gradient-gold: linear-gradient(135deg, #FFD700, #B8860B);
    --gradient-dark: linear-gradient(135deg, #1a1a1a, #2d2d2d);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--gradient-dark);
    background-image: 
        linear-gradient(135deg, rgba(26, 26, 26, 0.9), rgba(45, 45, 45, 0.9)),
        url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><defs><pattern id="money" patternUnits="userSpaceOnUse" width="40" height="40"><circle cx="20" cy="20" r="15" fill="none" stroke="%23FFD700" stroke-width="1" opacity="0.15"/><circle cx="20" cy="20" r="12" fill="none" stroke="%23B8860B" stroke-width="0.5" opacity="0.1"/><text x="20" y="25" text-anchor="middle" font-size="12" font-weight="bold" fill="%23FFD700" opacity="0.2">$</text><circle cx="20" cy="20" r="3" fill="%23FFD700" opacity="0.1"/></pattern></defs><rect width="200" height="200" fill="url(%23money)"/></svg>');
    background-size: 400px 400px;
    background-attachment: fixed;
    background-position: center;
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
}

/* Add subtle overlay for better text readability */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(26, 26, 26, 0.3), rgba(45, 45, 45, 0.3));
    pointer-events: none;
    z-index: -1;
}

/* Header */
.header {
    background: var(--gradient-gold);
    color: var(--primary-black);
    padding: 1rem 0;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
}

.header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: bold;
    text-decoration: none;
    color: var(--primary-black);
}

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

.nav a {
    color: var(--primary-black);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav a:hover {
    background: rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Cards */
.card {
    background: rgba(45, 45, 45, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-gold);
    opacity: 0.6;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(255, 215, 0, 0.3), 0 0 0 1px rgba(255, 215, 0, 0.3);
    background: rgba(45, 45, 45, 0.98);
}

.card-header {
    border-bottom: 2px solid var(--primary-gold);
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.card-title {
    color: var(--text-gold);
    font-size: 1.5rem;
    font-weight: bold;
}

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

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

.form-input {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--accent-black);
    border-radius: 8px;
    background: var(--primary-black);
    color: var(--text-light);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-gold);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

/* Buttons */
.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: var(--gradient-gold);
    color: var(--primary-black);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.4);
}

.btn-secondary {
    background: var(--accent-black);
    color: var(--text-light);
    border: 2px solid var(--primary-gold);
}

.btn-secondary:hover {
    background: var(--primary-gold);
    color: var(--primary-black);
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-success {
    background: #28a745;
    color: white;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

/* Stats Cards */
.stat-card {
    background: var(--gradient-gold);
    color: var(--primary-black);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4), 0 0 20px rgba(255, 215, 0, 0.2);
    border: 2px solid rgba(255, 215, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0%, 100% { transform: translateX(-100%) translateY(-100%) rotate(30deg); }
    50% { transform: translateX(100%) translateY(100%) rotate(30deg); }
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.8;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: var(--secondary-black);
    border-radius: 10px;
    overflow: hidden;
}

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

.table th {
    background: var(--primary-gold);
    color: var(--primary-black);
    font-weight: 600;
}

.table tr:hover {
    background: var(--accent-black);
}

/* Leaderboard */
.leaderboard {
    background: var(--secondary-black);
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.leaderboard-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    margin: 0.5rem 0;
    background: var(--primary-black);
    border-radius: 10px;
    border-left: 4px solid var(--primary-gold);
}

.leaderboard-rank {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-gold);
    min-width: 50px;
}

.leaderboard-name {
    flex: 1;
    margin-left: 1rem;
    font-weight: 500;
}

.leaderboard-amount {
    color: var(--text-gold);
    font-weight: bold;
    font-size: 1.1rem;
}

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

.payment-method {
    background: var(--secondary-black);
    border: 2px solid var(--accent-black);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.payment-method:hover {
    border-color: var(--primary-gold);
    transform: translateY(-3px);
}

.payment-method.selected {
    border-color: var(--primary-gold);
    background: rgba(255, 215, 0, 0.1);
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
    border-left: 4px solid;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    border-color: #28a745;
    color: #28a745;
}

.alert-error {
    background: rgba(220, 53, 69, 0.1);
    border-color: #dc3545;
    color: #dc3545;
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    border-color: #ffc107;
    color: #ffc107;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: rgba(45, 45, 45, 0.98);
    backdrop-filter: blur(15px);
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    border: 2px solid var(--primary-gold);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 215, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.modal-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
}

.close {
    color: var(--text-gold);
    float: right;
    font-size: 2rem;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--text-light);
}

/* Admin Panel Specific */
.admin-sidebar {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(15px);
    min-height: 100vh;
    width: 250px;
    position: fixed;
    left: 0;
    top: 0;
    padding: 2rem 0;
    border-right: 2px solid var(--primary-gold);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.3);
    z-index: 1000;
}

.admin-content {
    margin-left: 250px;
    padding: 2rem;
}

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

.admin-nav li {
    margin: 0.5rem 0;
}

.admin-nav a {
    display: block;
    padding: 1rem 2rem;
    color: var(--text-light);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.admin-nav a:hover,
.admin-nav a.active {
    background: var(--accent-black);
    border-left-color: var(--primary-gold);
    color: var(--text-gold);
}

/* Responsive */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        flex-direction: column;
        gap: 1rem;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    .admin-sidebar {
        width: 100%;
        position: relative;
        min-height: auto;
    }
    
    .admin-content {
        margin-left: 0;
    }
}

/* Loading Spinner */
.spinner {
    border: 4px solid var(--accent-black);
    border-top: 4px solid var(--primary-gold);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

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

/* Investment Progress Bar */
.progress-bar {
    width: 100%;
    height: 20px;
    background: var(--accent-black);
    border-radius: 10px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-gold);
    transition: width 0.3s ease;
}