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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #fafafa;
    color: #1a1a1a;
    line-height: 1.6;
    padding: 2rem 1rem;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    background: #ffffff;
    border-radius: 12px;
    padding: 2.5rem;
    box-shadow: 0 1px 6px rgba(0, 0, 0, 0.08);
}

.logo {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 1.5rem 0 0.5rem;
}

p {
    color: #444;
    margin-bottom: 0.75rem;
}

.tagline {
    font-size: 1.05rem;
    color: #666;
    margin-bottom: 2rem;
}

.nav {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

a {
    color: #c0395b;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.btn {
    display: inline-block;
    padding: 0.65rem 1.4rem;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: opacity 0.15s;
}

.btn:hover {
    opacity: 0.85;
    text-decoration: none;
}

.btn-primary {
    background: #c0395b;
    color: #ffffff;
}

.btn-danger {
    background: #c0392b;
    color: #ffffff;
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: #333;
    margin-bottom: 0.3rem;
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    margin-bottom: 1rem;
    outline: none;
    transition: border-color 0.15s;
}

input[type="email"]:focus,
input[type="password"]:focus {
    border-color: #c0395b;
}

.form-group {
    margin-bottom: 0.25rem;
}

.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    margin-top: 0.75rem;
}

.alert-error {
    background: #fff0f0;
    color: #c0392b;
    border: 1px solid #f5c6cb;
}

.alert-success {
    background: #f0fff4;
    color: #27ae60;
    border: 1px solid #b2dfdb;
}

.warning-box {
    background: #fff8e6;
    border: 1px solid #f0c040;
    border-radius: 8px;
    padding: 1rem;
    margin: 1rem 0;
    font-size: 0.9rem;
    color: #7a5c00;
}

.divider {
    border: none;
    border-top: 1px solid #eee;
    margin: 1.5rem 0;
}

footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.8rem;
    color: #999;
}

footer a {
    color: #999;
}