/* Library registration — GGCAST branding */

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

html {
    width: 100%;
    overflow-x: hidden;
}

body.register-page {
    margin: 0;
    width: 100%;
    min-height: 100vh;
    font-family: var(--brand-font-family, 'Poppins', ui-sans-serif, system-ui, sans-serif);
    color: var(--brand-text-dark, #333);
    background:
        radial-gradient(circle at top right, color-mix(in srgb, var(--brand-primary, #fbbf24) 12%, transparent), transparent 42%),
        linear-gradient(160deg, var(--brand-shell-muted, #f4f6f9) 0%, #eef2f7 100%);
}

.register-page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.register-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--brand-page-bg, #fff);
    border-bottom: 1px solid var(--brand-shell-border, #e5e7eb);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.register-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--brand-shell-border, #e5e7eb);
    background: var(--brand-page-bg, #fff);
    color: var(--brand-nav-link, var(--brand-blue, #1e3a8a));
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.register-back-btn:hover {
    background: color-mix(in srgb, var(--brand-primary, #fbbf24) 12%, #fff);
    color: var(--brand-blue, #1e3a8a);
    border-color: color-mix(in srgb, var(--brand-primary, #fbbf24) 45%, var(--brand-shell-border, #e5e7eb));
    transform: translateX(-2px);
}

.register-topbar-logo {
    max-height: 40px;
    width: auto;
    object-fit: contain;
}

.register-main {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 2rem 1rem 3rem;
    width: 100%;
}

.register-card {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 2rem 2rem 2.25rem;
    background: var(--brand-shell-card, #fff);
    border-radius: 16px;
    border: 1px solid var(--brand-shell-border, #e5e7eb);
    box-shadow:
        0 4px 6px rgba(0, 0, 0, 0.03),
        0 16px 40px rgba(0, 0, 0, 0.08);
    position: relative;
}

.register-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: 16px 16px 0 0;
    background: linear-gradient(
        90deg,
        var(--brand-blue, #1e3a8a),
        var(--brand-primary, #fbbf24)
    );
    pointer-events: none;
}

.register-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.register-logo {
    max-width: 110px;
    width: 100%;
    height: auto;
    margin-bottom: 0.85rem;
    object-fit: contain;
}

.register-title {
    margin: 0 0 0.35rem;
    font-family: var(--brand-font-family-heading, inherit);
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--brand-school-name-color, var(--brand-blue, #1e3a8a));
}

.register-subtitle {
    margin: 0;
    font-size: 0.95rem;
    color: var(--brand-shell-muted-text, #64748b);
}

.register-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.register-tab {
    min-width: 150px;
    padding: 0.65rem 1.25rem;
    border-radius: 10px;
    border: 2px solid var(--brand-accent, #1e3a8a);
    background: transparent;
    color: var(--brand-accent, #1e3a8a);
    font: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.register-tab:hover {
    background: color-mix(in srgb, var(--brand-accent, #1e3a8a) 8%, #fff);
}

.register-tab.is-active {
    background: var(--brand-button-bg, var(--brand-accent, #1e3a8a));
    border-color: var(--brand-button-bg, var(--brand-accent, #1e3a8a));
    color: var(--brand-button-text, #fff);
    box-shadow: 0 4px 14px color-mix(in srgb, var(--brand-button-bg, #1e3a8a) 30%, transparent);
}

.register-section-title {
    margin: 0 0 1rem;
    padding-left: 0.75rem;
    border-left: 4px solid var(--brand-primary, #fbbf24);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--brand-blue, #1e3a8a);
}

.register-section-title--sub {
    margin-top: 0.5rem;
    font-size: 0.95rem;
    color: var(--brand-text-dark, #333);
    border-left-color: var(--brand-blue, #1e3a8a);
}

.register-page .form-label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--brand-text-dark, #333);
    margin-bottom: 0.35rem;
}

.register-page .form-control,
.register-page .form-select {
    width: 100%;
    max-width: 100%;
    padding: 0.75rem 0.9rem;
    border: 1px solid var(--brand-shell-border, #e5e7eb);
    border-radius: 10px;
    font: inherit;
    font-size: 0.95rem;
    color: var(--brand-text-dark, #333);
    background: var(--brand-page-bg, #fff);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.register-page .form-control::placeholder {
    color: #94a3b8;
}

.register-page .form-control:focus,
.register-page .form-select:focus {
    outline: none;
    border-color: var(--brand-nav-link, var(--brand-blue, #1e3a8a));
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--brand-nav-link, #1e3a8a) 18%, transparent);
}

.register-alert {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
}

.register-alert--success {
    background: color-mix(in srgb, var(--brand-status-success, #16a34a) 12%, #fff);
    border: 1px solid color-mix(in srgb, var(--brand-status-success, #16a34a) 30%, transparent);
    color: #166534;
}

.register-alert--danger {
    background: color-mix(in srgb, var(--brand-status-danger, #dc2626) 10%, #fff);
    border: 1px solid color-mix(in srgb, var(--brand-status-danger, #dc2626) 25%, transparent);
    color: var(--brand-status-danger, #dc2626);
}

.register-alert ul {
    margin: 0;
    padding-left: 1.1rem;
}

.register-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin-top: 1.5rem;
    padding: 0.9rem 1.25rem;
    border: none;
    border-radius: 10px;
    background: var(--brand-button-bg, var(--brand-accent, #1e3a8a));
    color: var(--brand-button-text, #fff);
    font: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.15s ease, box-shadow 0.2s ease;
    box-shadow: 0 4px 14px color-mix(in srgb, var(--brand-button-bg, #1e3a8a) 35%, transparent);
}

.register-submit:hover {
    background: var(--brand-button-hover-bg, var(--brand-blue-dark, #163a82));
    transform: translateY(-1px);
    box-shadow: 0 6px 18px color-mix(in srgb, var(--brand-button-bg, #1e3a8a) 40%, transparent);
}

.register-clear-sig {
    display: inline-flex;
    align-items: center;
    margin-top: 0.5rem;
    padding: 0.4rem 0.85rem;
    border-radius: 8px;
    border: 1px solid color-mix(in srgb, var(--brand-status-danger, #dc2626) 40%, #e5e7eb);
    background: #fff;
    color: var(--brand-status-danger, #dc2626);
    font: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
}

.register-clear-sig:hover {
    background: color-mix(in srgb, var(--brand-status-danger, #dc2626) 8%, #fff);
}

.hidden {
    display: none !important;
}

.register-page canvas {
    touch-action: none;
    display: block;
    width: 100%;
    max-width: 100%;
    height: 150px;
    border: 1px solid var(--brand-shell-border, #e5e7eb);
    border-radius: 10px;
    background-color: #fff;
}

@media (max-width: 576px) {
    .register-topbar {
        padding: 0.85rem 1rem;
    }

    .register-topbar-logo {
        max-height: 32px;
    }

    .register-card {
        padding: 1.5rem 1.15rem 1.75rem;
    }

    .register-title {
        font-size: 1.35rem;
    }

    .register-tab {
        flex: 1 1 auto;
        min-width: 0;
    }
}