:root {
    --primary-blue: #0B5C8A;
    --accent-coral: #FF6B4A;
    --bg-sand: #F6F2EE;
    --text-slate: #2E3A45;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-sand);
    color: var(--text-slate);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.2s;
}

a:hover {
    color: var(--primary-blue);
}

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

header {
    background-color: var(--white);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

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

.btn {
    display: inline-block;
    padding: 0.5rem 1.25rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

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

.btn-primary:hover {
    background-color: #084a6f;
    color: var(--white);
}

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

.btn-accent:hover {
    background-color: #e65535;
    color: var(--white);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-blue), #1a3c5a);
    color: var(--white);
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding-bottom: 3rem;
}

.card {
    background: var(--white);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
    border: 1px solid rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-4px);
}

.card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-blue);
}

.card .meta {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
}

.tag {
    background-color: var(--bg-sand);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-slate);
}

/* Forms */
.auth-form, .admin-form {
    max-width: 500px;
    margin: 3rem auto;
    background: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

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

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

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

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

/* Footer */
footer {
    background-color: #1a222a;
    color: #ccc;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
}

/* Utilities */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 2rem; }
.alert {
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}
.alert-error {
    background-color: #fee2e2;
    color: #dc2626;
}