.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 60px);
    padding: 20px;
}

.auth-card {
    position: relative;
    background: var(--card);
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 410px;
    overflow: hidden;
}

.auth-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 6px;
    background: var(--grad-primary);
}

.auth-card h2 {
    font-family: 'Poppins', 'Segoe UI', sans-serif;
    font-weight: 700;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 26px;
    text-align: center;
    font-size: 25px;
}

.auth-card .form-group {
    margin-bottom: 18px;
}

.auth-card .form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 13px;
    color: var(--ink-soft);
}

.auth-card .form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--line);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color var(--ease), box-shadow var(--ease);
}

.auth-card .form-group input:focus {
    outline: none;
    border-color: var(--c-indigo);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}

.btn-auth {
    background: var(--grad-primary);
    color: white;
    border: none;
    padding: 13px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    width: 100%;
    margin-top: 10px;
    box-shadow: 0 6px 16px rgba(79, 70, 229, 0.35);
    transition: transform var(--ease), box-shadow var(--ease), filter var(--ease);
}

.btn-auth:hover {
    transform: translateY(-2px);
    filter: brightness(1.05);
    box-shadow: 0 10px 22px rgba(79, 70, 229, 0.45);
}

.auth-link {
    text-align: center;
    margin-top: 18px;
    font-size: 14px;
    color: var(--ink-soft);
}

.auth-link a {
    color: var(--c-indigo);
    text-decoration: none;
    font-weight: 600;
}

.auth-link a:hover { text-decoration: underline; }

.error {
    color: var(--c-coral);
    font-size: 13px;
    margin-bottom: 12px;
}

@media (max-width: 768px) {
    .auth-card {
        padding: 28px 22px;
        margin: 0 12px;
    }
}