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

:root {
    --primary-color: #8b5cf6;
    --primary-dark: #7c3aed;
    --secondary-color: #a78bfa;
    --background: #0f1115;
    --surface: #1b1f24;
    --surface-light: #23272c;
    --text-primary: #FFFFFF;
    --text-secondary: #adb5bd;
    --border-color: rgba(255, 255, 255, 0.08);
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
    --accent-purple: #8b5cf6;
    --accent-purple-dark: #7c3aed;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #0f1115;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: 
        radial-gradient(40% 45% at 18% 45%, rgba(139, 92, 246, 0.12), transparent 60%),
        radial-gradient(35% 35% at 28% 30%, rgba(139, 92, 246, 0.10), transparent 65%),
        radial-gradient(circle at 70% 40%, rgba(139, 92, 246, 0.08), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body > * {
    position: relative;
    z-index: 1;
}

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

/* Header */
.header {
    background: rgba(27, 31, 36, 0.8);
    backdrop-filter: blur(12px) saturate(130%);
    -webkit-backdrop-filter: blur(12px) saturate(130%);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: #FFFFFF;
    text-decoration: none;
}

.logo strong {
    font-weight: 700;
}

.nav {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--surface-light);
}

.nav-link.active {
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* Main Content */
.main-content {
    padding: 3rem 0;
    min-height: calc(100vh - 100px);
}

.login-layout {
    display: grid;
    grid-template-columns: 1fr 450px;
    gap: 3rem;
    align-items: start;
    max-width: 1200px;
    margin: 0 auto;
}

.welcome-section-left {
    text-align: left;
    padding-top: 2rem;
}

.welcome-section {
    text-align: center;
    margin-bottom: 3rem;
}

.welcome-section h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.welcome-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

.features-list li {
    padding: 1rem 1.5rem;
    background: var(--surface);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

/* Auth Section */
.auth-section {
    background: #1d0e81;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 120px;
}

.auth-section h2 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    text-align: center;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input,
.form-group select {
    padding: 0.75rem 1rem;
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    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: #4169E1;
    color: #FFFFFF;
}

.btn-primary:hover {
    background: #3152c4;
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(65, 105, 225, 0.3);
}

.btn-secondary {
    background: var(--surface-light);
    color: #FFFFFF;
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

/* Links */
.form-links {
    text-align: center;
    margin-top: 1rem;
}

.link {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

/* Messages */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: none;
}

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

.success-message {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: none;
}

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

/* Dashboard */
.profile-header {
    text-align: center;
    margin-bottom: 3rem;
}

.dashboard {
    max-width: 1000px;
    margin: 0 auto;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.dashboard-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.card-header h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.balance-amount {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.subscription-count {
    font-size: 2rem;
    font-weight: 700;
    color: var(--success);
}

.last-payment {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.profile-section,
.quick-actions {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.profile-section h2,
.quick-actions h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.profile-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background: var(--background);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.info-item label {
    color: var(--text-secondary);
    font-weight: 500;
}

.info-item span {
    color: var(--text-primary);
    font-weight: 600;
}

.actions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.action-btn {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    color: #FFFFFF;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.action-btn:hover {
    background: var(--surface-light);
    border-color: var(--primary-color);
    transform: translateY(-3px);
}

.action-icon {
    font-size: 2rem;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h1 {
    font-size: 2rem;
}

/* Subscriptions */
.subscriptions-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.subscription-item {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.subscription-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.2);
}

.subscription-info h3 {
    margin-bottom: 0.5rem;
}

.subscription-info p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.subscription-status {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

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

.subscription-status.expired {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

/* Payments */
.balance-section {
    margin-bottom: 3rem;
}

.balance-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.balance-card h2 {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.balance-amount-large {
    font-size: 3.5rem;
    font-weight: 700;
    color: #FFFFFF;
}

.payments-section {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.payments-section h2 {
    margin-bottom: 1.5rem;
}

.payments-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.payment-item {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.payment-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.payment-amount {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--success);
}

.payment-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-content h2 {
    margin-bottom: 1.5rem;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s ease;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 1.5rem;
    font-size: 1.125rem;
}

/* Admin Styles */
.admin-sections {
    margin-bottom: 2rem;
}

.admin-sections h2 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.admin-buttons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.admin-section-btn {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    color: #FFFFFF;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 500;
}

.admin-section-btn:hover {
    background: var(--surface-light);
    border-color: var(--primary-color);
}

.admin-section-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #FFFFFF;
}

.admin-content-section {
    margin-bottom: 2rem;
}

.admin-card {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
}

.admin-card h2 {
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.admin-form .form-group small {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.admin-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.stat-item {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
}

.stat-item h3 {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.admin-summary {
    background: var(--surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-top: 2rem;
    text-align: center;
}

.admin-summary p {
    margin: 0;
    color: var(--text-secondary);
}

.admin-summary strong {
    color: var(--primary-color);
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 1rem;
        border-top: 1px solid var(--border-color);
    }

    .nav.active {
        display: flex;
    }

    .welcome-section h1 {
        font-size: 2rem;
    }

    .auth-section {
        padding: 1.5rem;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .actions-grid {
        grid-template-columns: 1fr;
    }

    .admin-buttons-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .admin-stats {
        grid-template-columns: 1fr;
    }

    .login-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .auth-section {
        position: static;
    }

    .welcome-section-left {
        text-align: center;
        padding-top: 0;
    }

    .features-list {
        flex-direction: column;
    }
}