:root {
    --gsc-auth-navy: #102a43;
    --gsc-auth-navy-dark: #0b1f33;
    --gsc-auth-green: #2e7d32;
    --gsc-auth-bg: #f4f7f9;
    --gsc-auth-card: #ffffff;
    --gsc-auth-text: #1f2933;
    --gsc-auth-muted: #66788a;
    --gsc-auth-border: #dce3e8;
    --gsc-auth-error-bg: #fff4f4;
    --gsc-auth-error-border: #e4b9b9;
    --gsc-auth-error-text: #842029;
}

* {
    box-sizing: border-box;
}

body.gsc-auth-page {
    margin: 0;
    background: var(--gsc-auth-bg);
    color: var(--gsc-auth-text);
    font-family:
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;
}

.gsc-auth-shell {
    width: min(100%, 520px);
    margin: 0 auto;
    padding: 72px 24px 48px;
}

.gsc-auth-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 28px;
}

.gsc-auth-brand img {
    width: 64px;
    height: 64px;
    display: block;
    border-radius: 14px;
}

.gsc-auth-brand strong,
.gsc-auth-brand span {
    display: block;
}

.gsc-auth-brand strong {
    color: var(--gsc-auth-navy-dark);
    font-size: 20px;
}

.gsc-auth-brand span {
    margin-top: 3px;
    color: var(--gsc-auth-muted);
    font-size: 14px;
}

.gsc-auth-card {
    padding: 32px;
    border: 1px solid var(--gsc-auth-border);
    border-radius: 16px;
    background: var(--gsc-auth-card);
}

.gsc-auth-card h1 {
    margin: 0;
    color: var(--gsc-auth-navy-dark);
    font-size: 30px;
}

.gsc-auth-intro {
    margin: 8px 0 24px;
    color: var(--gsc-auth-muted);
}

.gsc-auth-field {
    margin-bottom: 18px;
}

.gsc-auth-field label {
    display: block;
    margin-bottom: 7px;
    font-weight: 700;
}

.gsc-auth-field input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--gsc-auth-border);
    border-radius: 9px;
    background: #ffffff;
    color: var(--gsc-auth-text);
    font-size: 16px;
}

.gsc-auth-field input:focus {
    border-color: var(--gsc-auth-green);
    outline: 2px solid rgba(46, 125, 50, 0.15);
}

.gsc-auth-remember {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 20px;
    color: var(--gsc-auth-muted);
}

.gsc-auth-button {
    width: 100%;
    display: inline-block;
    padding: 12px 18px;
    border: 0;
    border-radius: 9px;
    background: var(--gsc-auth-green);
    color: #ffffff;
    text-align: center;
    text-decoration: none;
    font-size: 16px;
    font-weight: 800;
    cursor: pointer;
}

.gsc-auth-button:hover {
    filter: brightness(0.95);
}

.gsc-auth-forgot {
    display: block;
    margin-top: 18px;
    color: var(--gsc-auth-navy);
    text-align: center;
}

.gsc-auth-error {
    margin: 0 0 20px;
    padding: 12px 14px;
    border: 1px solid var(--gsc-auth-error-border);
    border-radius: 9px;
    background: var(--gsc-auth-error-bg);
    color: var(--gsc-auth-error-text);
}

.gsc-auth-thank-you {
    text-align: center;
}

.gsc-auth-thank-you p {
    color: var(--gsc-auth-muted);
}

.gsc-auth-thank-you .gsc-auth-button {
    margin-top: 12px;
}

@media (max-width: 600px) {
    .gsc-auth-shell {
        padding: 36px 18px;
    }

    .gsc-auth-card {
        padding: 24px;
    }
}


/* GSC Voice Control */
@keyframes gscVoicePulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.25); opacity: .55; }
}