:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --secondary-color: #64748b;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --radius: 0.5rem;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.5;
}

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

a:hover {
    text-decoration: underline;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navbar */
nav {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
}

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

nav .brand {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-color);
}

nav .links {
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: var(--text-muted);
    font-weight: 500;
}

nav a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: background-color 0.2s;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    text-decoration: none;
}

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

.btn-secondary:hover {
    background-color: var(--background-color);
    text-decoration: none;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 1rem;
}

input:focus {
    outline: 2px solid var(--primary-color);
    border-color: transparent;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--surface-color);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

th,
td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--background-color);
    font-weight: 600;
    color: var(--text-muted);
}

/* Utilities */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 1rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.flashes {
    list-style: none;
    margin-bottom: 1rem;
}

.flashes li {
    padding: 0.75rem;
    border-radius: var(--radius);
    background-color: #dbeafe;
    color: #1e40af;
    margin-bottom: 0.5rem;
}

/* Hero */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--primary-color), #818cf8);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.feature-card {
    background: var(--surface-color);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.feature-card h3 {
    margin-bottom: 0.5rem;
}