:root {
    --primary-color: #2563eb;
    --surface-color: #ffffff;
    --background-color: #f3f6fb;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #dbe3f0;
    --danger-color: #dc2626;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-primary);
    background: var(--background-color);
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-panel {
    width: min(920px, 100%);
    min-height: 540px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 24px 80px rgba(15, 23, 42, 0.12);
    overflow: hidden;
}

.auth-brand {
    padding: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    background: linear-gradient(145deg, #eef6ff, #f7f3ff);
}

.auth-logo {
    width: 74px;
    height: 74px;
    border-radius: 18px;
    background: linear-gradient(145deg, #1a1f35, #252b46);
    display: grid;
    place-items: center;
    box-shadow: 0 18px 38px rgba(37, 99, 235, 0.22);
    flex: 0 0 auto;
}

.logo-icon {
    width: 44px;
    height: 44px;
}

.orbit-path {
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
}

.orbit-1 {
    stroke: #00e5ff;
}

.orbit-2 {
    stroke: #bd00ff;
}

.auth-brand h1 {
    margin: 0;
    font-size: 36px;
    letter-spacing: 0;
    color: #1d4ed8;
}

.auth-brand p {
    margin: 6px 0 0;
    color: var(--text-secondary);
}

.auth-form {
    padding: 56px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 16px;
}

.auth-form h2 {
    margin: 0;
    font-size: 26px;
}

.auth-intro {
    margin: -6px 0 8px;
    color: var(--text-secondary);
}

.auth-form label {
    display: grid;
    gap: 8px;
    font-size: 14px;
    color: var(--text-secondary);
}

.auth-form input {
    height: 44px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0 12px;
    font-size: 15px;
    color: var(--text-primary);
    outline: none;
}

.auth-form input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.auth-error {
    color: var(--danger-color);
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
}

.auth-message {
    color: #0f766e;
    background: #ecfdf5;
    border: 1px solid #a7f3d0;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
    line-height: 1.6;
}

.auth-debug-link {
    display: inline-block;
    margin-left: 10px;
    color: var(--primary-color);
    font-weight: 700;
    text-decoration: none;
}

.auth-form button {
    height: 46px;
    border: 0;
    border-radius: 6px;
    background: var(--primary-color);
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.auth-form button:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.auth-switch {
    margin: 4px 0 0;
    color: var(--text-secondary);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.auth-switch a {
    color: var(--primary-color);
    font-weight: 700;
    text-decoration: none;
}

@media (max-width: 760px) {
    .auth-panel {
        grid-template-columns: 1fr;
    }

    .auth-brand {
        padding: 32px;
        justify-content: flex-start;
    }

    .auth-form {
        padding: 32px;
    }
}