/*
 * Redesigned for AI-296 against the Figma "Login" page (login-form component set,
 * node 1423-9043). These tokens intentionally diverge from consent.html's and
 * admin-ui's - only this page's design has been through this pass so far.
 */
:root {
    color-scheme: light;
    --bg: #f4f5f7;
    --card-bg: #ffffff;
    --card-border: rgba(15, 23, 42, 0.04);
    --card-shadow: rgba(0, 0, 0, 0.12);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    --text-headings: #0d0d0d;
    --text-body: #333333;
    --text-caption: #666666;
    --text-disabled: #999999;
    --text-on-action: #ffffff;
    --text-action: #0d0d0d;

    --surface-page: #ffffff;
    --surface-action: #e30513;
    --surface-action-hover: #c41021;
    --surface-disabled: #ebebeb;

    --border-default: #dddddd;
    --border-action: #e30513;
    --border-action-hover: #c41021;
    --border-disabled: #ebebeb;
    --border-error-strong: #a11245;

    --surface-error: #fdf7f9;
    --border-error: #f9dce6;
    --text-error: #7c0e36;

    --surface-warning: #fffdf5;
    --border-warning: #fef0c7;
    --text-warning: #b54708;

    --surface-info: #f3f4f6;
    --text-info: #374151;

    --surface-inverse: #0d0d0d;
    --surface-hover: #f3f4f6;
    --border-focus: #e30513;

    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-lg: 16px;
    --space-xl: 24px;
    --radius-sm: 4px;
    --radius-md: 8px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text-body);
}

.page {
    flex: 1 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

main {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    box-shadow: 0 4px 16px var(--card-shadow);
    padding: 32px;
}

/* ---------- headline ---------- */

.headline {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    margin: 0 0 var(--space-xl);
}

.headline__line {
    margin: 0;
    font-size: 20px;
    line-height: 28px;
    font-weight: 600;
    color: var(--text-headings);
    text-align: center;
}

.headline__brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.headline__brand svg {
    display: block;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.subheadline {
    margin: 0;
    padding: var(--space-sm) 0 0;
    font-size: 14px;
    line-height: 20px;
    font-weight: 400;
    color: var(--text-body);
    text-align: center;
}

/* ---------- banners ---------- */

.banner {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-size: 14px;
    line-height: 20px;
    margin: 0 0 var(--space-lg);
}

.banner p {
    margin: 0;
}

.banner svg {
    flex-shrink: 0;
    margin-top: 2px;
}

.banner--error {
    background: var(--surface-error);
    border-color: var(--border-error);
    color: var(--text-error);
}

.banner--warning {
    background: var(--surface-warning);
    border-color: var(--border-warning);
    color: var(--text-warning);
}

.banner--info {
    background: var(--surface-info);
    color: var(--text-info);
}

/* ---------- form / fields ---------- */

form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.field {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.field__label {
    margin: 0;
    font-size: 14px;
    line-height: 20px;
    font-weight: 700;
    color: var(--text-body);
}

.field__control {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    background: var(--surface-page);
    color: var(--text-body);
    font-family: inherit;
    font-size: 14px;
    line-height: 20px;
}

.field__control::placeholder {
    color: var(--text-caption);
}

.field__control:focus {
    outline: none;
    border-color: var(--border-action);
}

.field__message {
    margin: 0;
    font-size: 12px;
    line-height: 18px;
    color: var(--text-caption);
}

.field--error .field__control {
    border-color: var(--border-error-strong);
}

.field--error .field__message {
    color: var(--text-error);
}

.field--locked .field__label {
    color: var(--text-disabled);
}

.field--locked .field__control {
    background: var(--surface-disabled);
    border-color: var(--border-disabled);
    color: var(--text-disabled);
}

/* ---------- buttons ---------- */

.btn-primary {
    width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    height: 40px;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-action);
    border-radius: var(--radius-md);
    background: var(--surface-action);
    color: var(--text-on-action);
    font-family: inherit;
    font-size: 16px;
    line-height: 24px;
    cursor: pointer;
}

.btn-primary:hover:not(:disabled) {
    background: var(--surface-action-hover);
    border-color: var(--border-action-hover);
}

.btn-primary:disabled {
    background: var(--surface-action-hover);
    border-color: var(--border-action-hover);
    cursor: default;
}

.btn-primary__spinner {
    /* Not the `hidden` attribute: Chrome doesn't honor it on an inline <svg> root
       (its UA stylesheet never resolves to display:none), so visibility is toggled
       via this class instead - see login.js's submit handler. */
    display: none;
    width: 16px;
    height: 16px;
    animation: spin 0.8s linear infinite;
}

.btn-primary__spinner--visible {
    display: inline-block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.btn-link {
    display: block;
    width: 100%;
    margin: var(--space-xl) 0 0;
    padding: var(--space-xs) var(--space-md);
    border: none;
    background: none;
    color: var(--text-action);
    font-family: inherit;
    font-size: 16px;
    line-height: 24px;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}

.btn-link:disabled {
    color: var(--text-disabled);
    cursor: default;
}

.btn-link:hover:not(:disabled) {
    text-decoration: underline;
}