/*
 * MERIDIAN LOGO — single source of truth (v2, locked 2026-09-14)
 *
 * The logo is the Solarized tri-stripe framed serif M — not bare meridian-m.png alone.
 *
 * Canonical files:
 *   CSS (colours, frame, sizes)  → this file — :root stripe vars + .meridian-framed-mark*
 *   Markup (app surfaces)        → templates/partials/meridian_wordmark.html
 *   Glyph raster                 → static/brand/meridian-m.png
 *   Favicon                      → static/brand/favicon-framed.svg
 *   Spec / doctrine              → devnotes/12 - open design questions.md § Logo
 *
 * Static apex (no Jinja): duplicate meridian_wordmark.html structure; link /css/brand.css.
 * Do not duplicate stripe hex or frame rules elsewhere — override size via modifiers only.
 */

:root {
    --mark-stripe-outer: #268bd2;
    --mark-stripe-mid: #d33682;
    --mark-stripe-inner: #b58900;
}

.meridian-framed-mark {
    display: inline-block;
    flex-shrink: 0;
    border: 1px solid var(--mark-stripe-outer);
    padding: 2px;
    line-height: 0;
}

.meridian-framed-mark__mid {
    border: 1px solid var(--mark-stripe-mid);
    padding: 2px;
}

.meridian-framed-mark__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--mark-stripe-inner);
    padding: 3px 2px 2px;
}

.meridian-mark {
    --mark-height: 28px;
    flex-shrink: 0;
    display: block;
    height: var(--mark-height);
    width: auto;
    user-select: none;
    transform: translate(-0.1rem, -0.04rem);
}

.meridian-header .meridian-framed-mark .meridian-mark,
body.admin-dashboard .meridian-framed-mark .meridian-mark {
    filter: brightness(0) invert(1);
}

[data-theme-resolved="light"] .meridian-header .meridian-framed-mark .meridian-mark {
    filter: none;
}

.meridian-practice {
    font-size: 13px;
    color: var(--text-muted, #94a3b8);
    line-height: 1.3;
    margin: 0;
}

.meridian-site-footer {
    text-align: center;
    font-size: 12px;
    color: var(--text-muted, #94a3b8);
    padding: 16px 20px 24px;
    border-top: 1px solid var(--border-subtle, rgba(148, 163, 184, 0.2));
    margin-top: auto;
}

/* Login — dark field (matches network apex placard; per-operator shop door) */
.meridian-login-page {
    font-family: system-ui, sans-serif;
    min-height: 100vh;
    min-height: 100dvh;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
    background: #000;
    color: #d1d5db;
    color-scheme: dark;
}

.meridian-login-shell {
    width: 100%;
    max-width: 400px;
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 32px 28px 28px;
    box-shadow: none;
}

.meridian-login-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 20px;
    gap: 8px;
}

.meridian-login-shell .meridian-framed-mark__inner,
.meridian-framed-mark--hero .meridian-framed-mark__inner {
    padding: 0.4375rem 0.1875rem 0.375rem;
}

.meridian-login-shell .meridian-mark,
.meridian-framed-mark--hero .meridian-mark {
    --mark-height: 4.75rem;
    transform: translate(-0.1875rem, -0.0625rem);
}

.meridian-framed-mark--hero .meridian-mark,
.meridian-login-shell .meridian-framed-mark .meridian-mark {
    filter: brightness(0) invert(1);
}

.meridian-login-shell .meridian-practice {
    text-align: center;
    margin: 0;
    color: #94a3b8;
}

.meridian-login-hint {
    margin-top: 20px;
    font-size: 12px;
    color: #6b7280;
    font-family: system-ui, sans-serif;
    text-align: center;
}

.meridian-login-subtitle {
    text-align: center;
    font-size: 13px;
    color: #6b7280;
    margin: 0 0 20px;
    font-family: system-ui, sans-serif;
}

.meridian-login-shell .form-group {
    margin-bottom: 15px;
}

.meridian-login-shell label {
    display: block;
    margin-bottom: 5px;
    font-family: system-ui, sans-serif;
    font-size: 14px;
    color: #cbd5e1;
}

.meridian-login-shell input {
    width: 100%;
    padding: 10px;
    border: 1px solid #374151;
    border-radius: 4px;
    font-family: system-ui, sans-serif;
    box-sizing: border-box;
    background: #0a0a0a;
    color: #f1f5f9;
}

.meridian-login-shell input::placeholder {
    color: #6b7280;
}

.meridian-login-shell input:focus {
    outline: none;
    border-color: #268bd2;
}

.meridian-login-shell button[type="submit"],
.meridian-login-shell .login-button {
    width: 100%;
    padding: 11px;
    background: transparent;
    color: #e5e7eb;
    border: 1px solid #374151;
    border-radius: 4px;
    cursor: pointer;
    font-family: system-ui, sans-serif;
    font-size: 15px;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.meridian-login-shell button[type="submit"]:hover,
.meridian-login-shell .login-button:hover {
    border-color: rgba(38, 139, 210, 0.55);
    color: #f3f4f6;
}

.meridian-login-shell button[type="submit"]:focus-visible,
.meridian-login-shell .login-button:focus-visible {
    outline: none;
    border-color: rgba(38, 139, 210, 0.7);
}

.meridian-login-shell .error,
.meridian-login-shell .error-message {
    color: #fca5a5;
    margin-top: 10px;
    font-family: system-ui, sans-serif;
    font-size: 14px;
}

.meridian-login-shell .success-message {
    color: #86efac;
    margin-top: 10px;
    font-family: system-ui, sans-serif;
    font-size: 14px;
}

.meridian-login-shell .admin-note {
    margin-top: 16px;
    font-size: 12px;
    color: #6b7280;
    font-family: system-ui, sans-serif;
}

.meridian-login-shell .admin-note code {
    color: #94a3b8;
}

.meridian-login-page > .meridian-site-footer {
    border-top: none;
    margin-top: 24px;
    background: transparent;
    color: #374151;
}

/* Role dashboards — header band */
.meridian-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: nowrap;
    width: 100%;
    color: var(--text, #ffffff);
}

.meridian-header .meridian-brand-block {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    min-width: 0;
}

.meridian-header .header-right,
.meridian-header .header-info {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: nowrap;
    margin-left: auto;
    flex-shrink: 0;
}

.meridian-header .time-display {
    line-height: 1.25;
    text-align: center;
}

.meridian-header .clock-label {
    margin-bottom: 2px;
}

.meridian-header .user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: nowrap;
}

.meridian-header .user-role-badge {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    opacity: 0.85;
    white-space: nowrap;
}

/* Student + teacher: header / main / footer column shell */
html[data-role="student"] body,
html[data-role="teacher"] body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

html[data-role="student"] .header,
html[data-role="teacher"] .header {
    flex-shrink: 0;
    min-height: 70px;
    height: auto;
    width: 100%;
}

html[data-role="student"] .main-content,
html[data-role="teacher"] .main-content {
    flex: 1;
    min-height: 0;
    height: auto;
}

html[data-role="student"] .meridian-site-footer,
html[data-role="teacher"] .meridian-site-footer {
    flex-shrink: 0;
    margin-top: 0;
}

/* Admin dashboard overrides */
body.admin-dashboard .header {
    padding: 16px 24px;
}

body.admin-dashboard .meridian-mark {
    --mark-height: 30px;
}

body.admin-dashboard .header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: none;
    width: 100%;
    gap: 16px;
}

body.admin-dashboard .meridian-site-footer {
    background: #141414;
    border-top-color: #333;
    color: #888;
}