:root {
    --auth-bg: #f7f4ff;
    --auth-surface: #ffffff;
    --auth-surface-muted: #f4f1fe;
    --auth-border: #ddd5ff;
    --auth-text: #2b3674;
    --auth-text-soft: #7b86b2;
    --auth-accent: #4318ff;
    --auth-accent-strong: #3311db;
    --auth-danger: #e1584b;
    --auth-shadow: 0 20px 50px rgba(67, 24, 255, 0.12);
}

body {
    background:
        radial-gradient(circle at top left, rgba(118, 75, 247, 0.16), transparent 28%),
        linear-gradient(180deg, #fcfbff 0%, var(--auth-bg) 42%, #f0ebff 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    margin: 0;
    padding: 24px 16px;
}

.auth-card {
    background: var(--auth-surface);
    width: 400px;
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(221, 213, 255, 0.92);
    box-shadow: var(--auth-shadow);
    text-align: center;
}

.auth-logo {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--auth-accent) 0%, #764bf7 100%);
    color: white;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px auto;
}

.auth-card h2 {
    color: var(--auth-text);
    margin-bottom: 8px;
    font-size: 1.5rem;
}

.auth-card p {
    color: var(--auth-text-soft);
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.input-group {
    margin-bottom: 20px;
    text-align: left;
}

.input-group label {
    display: block;
    color: var(--auth-text);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.input-group input, .input-group select {
    width: 100%;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--auth-border);
    font-family: inherit;
    font-size: 1rem;
    transition: 0.2s;
    outline: none;
    box-sizing: border-box;
    color: var(--auth-text);
    background: #fff;
}

.input-group input:focus, .input-group select:focus {
    border-color: var(--auth-accent);
    box-shadow: 0 0 0 3px rgba(67, 24, 255, 0.12);
}

.auth-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--auth-accent) 0%, #6236ff 100%);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
    margin-top: 10px;
}

.auth-btn:hover {
    background: var(--auth-accent-strong);
}

.auth-link {
    display: block;
    margin-top: 20px;
    color: var(--auth-accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
}

.error-msg {
    color: var(--auth-danger);
    font-size: 14px;
    margin-top: 10px;
    display: none;
}

/* Modal Overlay logic for Auth */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6); z-index: 1000;
    display: none; justify-content: center; align-items: center;
}
.modal-overlay.active { display: flex; }
.modal-content {
    background: white; border-radius: 20px; width: 400px;
    max-width: 90%; padding: 40px 30px; box-shadow: var(--auth-shadow);
    text-align: center; animation: modalPop 0.3s cubic-bezier(0.16,1,0.3,1);
    border: 1px solid rgba(221, 213, 255, 0.92);
}
@keyframes modalPop { from { transform: scale(0.95); opacity: 0; } to { transform: scale(1); opacity: 1; }}
.btn-primary {
    background: linear-gradient(135deg, var(--auth-accent) 0%, #6236ff 100%); color: white; border: none; padding: 14px;
    border-radius: 12px; font-weight: 600; width: 100%; cursor: pointer;
    font-size: 1rem; margin-top:20px;
}

.primary-btn {
    background: linear-gradient(135deg, var(--auth-accent) 0%, #6236ff 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: 0 10px 20px rgba(67, 24, 255, 0.2);
    transition: background 0.2s ease, transform 0.2s ease;
}

.primary-btn:hover {
    background: var(--auth-accent-strong);
    transform: translateY(-1px);
}

.btn-outline-small {
    border: 1px solid var(--auth-border);
    background: #fff;
    color: var(--auth-text-soft);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: border-color 0.2s ease, color 0.2s ease;
}

.btn-outline-small:hover {
    border-color: var(--auth-accent);
    color: var(--auth-accent);
}

.global-modal-icon {
    font-size: 3.2rem;
    color: var(--auth-accent);
    margin-bottom: 15px;
}

.auth-card-wide {
    width: min(720px, 92vw);
    text-align: left;
}

.auth-card-wide h2,
.auth-card-wide > p,
.auth-card-wide .auth-link {
    text-align: center;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.input-grid.single-column {
    grid-template-columns: 1fr;
}

.auth-credential-grid {
    margin-top: 10px;
    grid-template-columns: 1fr;
}

.staff-input-grid {
    grid-template-columns: 1fr;
}

.form-switch-panel {
    display: none;
    margin-bottom: 10px;
}

.form-switch-panel.active {
    display: block;
}

.auth-note-box {
    margin-top: 20px;
    font-size: 14px;
    color: var(--auth-text-soft);
    text-align: left;
    padding: 14px;
    background: var(--auth-surface-muted);
    border: 1px solid var(--auth-border);
    border-radius: 12px;
}

.auth-meta-links {
    margin-top: 18px;
    padding-top: 16px;
    border-top: 1px solid rgba(221, 213, 255, 0.92);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 14px;
}

.auth-meta-links a {
    color: var(--auth-text-soft);
    font-size: 13px;
    text-decoration: none;
}

.auth-meta-links a:hover {
    color: var(--auth-accent);
}

.auth-card-compact {
    width: min(400px, 92vw);
    text-align: left;
}

.auth-card-stack h2,
.auth-card-stack > p,
.auth-card-stack .auth-link {
    text-align: center;
}

.auth-choice-grid {
    display: grid;
    gap: 12px;
    margin-top: 8px;
}

.auth-choice-card {
    border: 1px solid var(--auth-border);
    border-radius: 14px;
    padding: 16px;
    text-decoration: none;
    color: inherit;
    display: grid;
    gap: 6px;
    transition: border-color 0.2s, box-shadow 0.2s, transform 0.2s;
}

.auth-choice-card:hover {
    border-color: var(--auth-accent);
    box-shadow: 0 8px 22px rgba(67, 24, 255, 0.12);
    transform: translateY(-1px);
}

.auth-choice-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--auth-surface-muted);
    color: var(--auth-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.auth-choice-card h3 {
    margin: 0;
    color: var(--auth-text);
    font-size: 1rem;
}

.auth-choice-card p {
    margin: 0;
    color: var(--auth-text-soft);
    font-size: 14px;
    line-height: 1.45;
}

.gender-toggle-group {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
}

.name-gender-row {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 12px;
}

.gender-btn {
    border: 1px solid var(--auth-border);
    background: white;
    color: var(--auth-text);
    border-radius: 10px;
    padding: 10px 8px;
    font: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.gender-btn.active {
    border-color: var(--auth-accent);
    background: var(--auth-surface-muted);
    color: var(--auth-accent-strong);
}

.date-input-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 48px;
    gap: 8px;
    align-items: center;
}

.date-trigger-btn {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: 1px solid var(--auth-border);
    background: #f8fbff;
    color: var(--auth-accent);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.sub-help-text {
    margin: 6px 0 0;
    color: var(--auth-text-soft);
    font-size: 14px;
}

.auth-status-title {
    color: var(--auth-text);
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.auth-status-text {
    color: var(--auth-text-soft);
    margin-bottom: 25px;
    line-height: 1.5;
}

.auth-status-icon-danger {
    color: var(--auth-danger);
}

@media (max-width: 640px) {
    .auth-card {
        width: min(92vw, 480px);
        padding: 28px 22px;
    }

    .input-grid {
        grid-template-columns: 1fr;
    }

    .name-gender-row {
        grid-template-columns: 1fr;
    }
}