:root {
    --color-bg: #0f172a; /* Slate 900 */
    --color-text: #f8fafc; /* Slate 50 */
    --color-text-dim: #94a3b8; /* Slate 400 */
    --color-card: #1e293b; /* Slate 800 */
    --color-border: #334155; /* Slate 700 */
    --color-primary: #2563eb; /* Blue 600 */
    --color-primary-hover: #1d4ed8; /* Blue 700 */
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.main-header {
    border-bottom: 1px solid var(--color-border);
    padding: 20px 0;
}

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

.logo {
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: -0.5px;
}

.main-header nav a {
    margin-left: 20px;
    font-size: 0.9rem;
    color: var(--color-text-dim);
}

.main-header nav a:hover {
    color: var(--color-text);
}

/* Main */
main {
    flex: 1;
    padding: 40px 0;
}

/* Footer */
.main-footer {
    border-top: 1px solid var(--color-border);
    padding: 40px 0;
    text-align: center;
    font-size: 0.9rem;
    margin-top: auto;
}

.dim {
    color: var(--color-text-dim);
}

/* Buttons */
.btn {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border);
}

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

/* Landing */
.hero {
    text-align: center;
    padding: 60px 0 80px;
}

.hero h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero p {
    font-size: 1.25rem;
    color: var(--color-text-dim);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero .small-note {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-top: 20px;
    display: block;
}

.section-title {
    font-size: 1.5rem;
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 80px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    margin-bottom: 80px;
}

.card {
    background: var(--color-card);
    padding: 30px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
}

.card h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.card p {
    color: var(--color-text-dim);
    font-size: 0.95rem;
}

ul.clean-list {
    list-style: none;
}

ul.clean-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}

ul.clean-list li:last-child {
    border-bottom: none;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text);
    font-family: inherit;
    font-size: 1rem;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
}

textarea.form-control {
    min-height: 200px;
    resize: vertical;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    font-weight: 600;
    color: var(--color-text-dim);
    font-size: 0.85rem;
    text-transform: uppercase;
}

tr:hover td {
    background-color: #1e293b;
}

/* Utilities */
.text-center { text-align: center; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }
.text-success { color: #10b981; }

/* Responsive */
@media (max-width: 768px) {
    .grid-3, .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
}