:root {
    --primary-color: #6366f1; /* Indigo */
    --secondary-color: #ec4899; /* Pink */
    --bg-color: #0f172a; /* Dark Slate */
    --card-bg: #1e293b;
    --text-color: #f1f5f9;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --success-color: #10b981;
    --danger-color: #ef4444;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: var(--secondary-color);
}

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

/* Navbar */
.navbar {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 0.9rem;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: #4f46e5;
}

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

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

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

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

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Grid Layouts */
.grid-comics {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.comic-card {
    background-color: var(--card-bg);
    border-radius: 1rem;
    overflow: hidden;
    transition: transform 0.2s;
    border: 1px solid var(--border-color);
}

.comic-card:hover {
    transform: translateY(-5px);
}

.comic-cover {
    width: 100%;
    aspect-ratio: 2/3;
    object-fit: cover;
    background-color: #333;
}

.comic-info {
    padding: 1rem;
}

.comic-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.comic-price {
    color: var(--success-color);
    font-weight: 700;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-ongoing {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--success-color);
}

/* Auth Cards */
.auth-container {
    max-width: 400px;
    margin: 4rem auto;
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--border-color);
}

.auth-title {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.flash-message {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
}

.flash-error {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--danger-color);
}

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