:root {
    --primary-color: #2383e2;
    --primary-hover: #1a6fb4;
    --bg-color: #ffffff;
    --bg-secondary: #f7f7f5;
    --bg-tertiary: #ffffff;
    --text-main: #37352f;
    --text-secondary: #787774;
    --text-muted: #9b9a97;
    --border-color: #e3e2e0;
    --border-light: #f0f0f0;
    --radius-sm: 3px;
    --radius-md: 4px;
    --radius-lg: 8px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.16);
    --transition: all 0.15s ease-in-out;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    color: var(--text-main);
    background-color: var(--bg-color);
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

.btn-primary:active {
    background-color: #1557b0;
    border-color: #1557b0;
}

.btn-danger {
    background-color: #e03e3e;
    color: white;
    border-color: #e03e3e;
}

.btn-danger:hover {
    background-color: #c53030;
    border-color: #c53030;
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-main);
    border-color: var(--border-color);
}

.btn-ghost:hover {
    background-color: var(--bg-secondary);
    border-color: var(--text-muted);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-main);
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(35, 131, 226, 0.1);
}

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

.form-control:disabled {
    background-color: var(--bg-secondary);
    cursor: not-allowed;
    opacity: 0.5;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23787774'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.625rem center;
    background-size: 0.875rem;
    padding-right: 2rem;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.card-header h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-main);
}

.card-body {
    padding: 1.25rem;
}

.card-footer {
    padding: 0.875rem 1.25rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid;
    font-size: 0.875rem;
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
}

.alert-success {
    background-color: #f0fdf4;
    border-color: #86efac;
    color: #166534;
}

.alert-error {
    background-color: #fef2f2;
    border-color: #fca5a5;
    color: #991b1b;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: #fde047;
    color: #854d0e;
}

.alert-info {
    background-color: #eff6ff;
    border-color: #93c5fd;
    color: #1e40af;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
    white-space: nowrap;
}

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

.badge-success {
    background-color: #0f9d58;
    color: white;
}

.badge-warning {
    background-color: #d97706;
    color: white;
}

.badge-danger {
    background-color: #e03e3e;
    color: white;
}

.badge-ghost {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 1.5rem;
    height: 3.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
}

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

.navbar-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    padding: 0.5rem 0;
}

.navbar-link:hover {
    color: var(--text-main);
}

.navbar-link.active {
    color: var(--text-main);
}

.navbar-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.875rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary-color);
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-sm {
    max-width: 640px;
}

.container-md {
    max-width: 768px;
}

.container-lg {
    max-width: 1024px;
}

.container-xl {
    max-width: 1200px;
}

.grid {
    display: grid;
    gap: 1.25rem;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .navbar-nav {
        display: none;
    }
}

.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    padding: 1.5rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background-color: var(--bg-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.admin-dashboard {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: 240px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    padding: 1.25rem;
    flex-shrink: 0;
}

.admin-main {
    flex: 1;
    padding: 1.5rem;
    background-color: var(--bg-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.data-table thead {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.data-table thead th {
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background-color: var(--bg-secondary);
}

.data-table tbody td {
    padding: 0.875rem 1rem;
    color: var(--text-main);
}

.data-table tbody tr:last-child {
    border-bottom: none;
}

.action-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.action-bar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.action-bar-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.search-box {
    position: relative;
    width: 280px;
}

.search-box input {
    width: 100%;
    padding: 0.5rem 0.75rem 0.5rem 2.25rem;
    font-size: 0.875rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-color);
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(35, 131, 226, 0.1);
}

.search-box-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.hero {
    position: relative;
    padding: 5rem 0 4rem;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-color) 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(35, 131, 226, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 2rem;
}

.hero-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 3.5rem;
}

.stat-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1;
    margin-bottom: 0.375rem;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.feature-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--text-muted);
}

.feature-icon {
    width: 40px;
    height: 40px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-main);
}

.feature-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.feature-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.25rem;
    margin-bottom: 3.5rem;
}

.pricing-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.pricing-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.6875rem;
    font-weight: 600;
}

.pricing-credits {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1;
    margin-bottom: 0.375rem;
}

.pricing-bonus {
    font-size: 0.8125rem;
    color: #0f9d58;
    font-weight: 500;
    margin-bottom: 1.25rem;
}

.pricing-price {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

.app-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
}

.app-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.app-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.app-icon {
    width: 56px;
    height: 56px;
    background-color: var(--bg-secondary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.875rem;
    font-size: 1.75rem;
    color: var(--text-main);
}

.app-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.375rem;
}

.app-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0.875rem;
    flex-grow: 1;
}

.app-price {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 0.875rem;
}

.cta-section {
    background: linear-gradient(135deg, #2383e2 0%, #1a6fb4 100%);
    padding: 4rem 0;
    text-align: center;
}

.cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.75rem;
}

.cta-subtitle {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1.75rem;
}

.cta-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

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

.btn-transparent {
    background-color: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-transparent:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .app-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .stats-grid,
    .feature-grid,
    .pricing-grid,
    .app-grid {
        grid-template-columns: 1fr;
    }
}