/*
 * SyncTech Smart CCTV UI refresh
 * Shared visual layer for the viewer, authentication flow, and admin tools.
 */

:root {
    --ui-ink: #102033;
    --ui-ink-2: #23374a;
    --ui-muted: #647587;
    --ui-line: #d9e4ed;
    --ui-line-strong: #c5d4df;
    --ui-surface: #ffffff;
    --ui-soft: #f3f7fa;
    --ui-soft-blue: #edf5fb;
    --ui-blue: #1769e0;
    --ui-blue-dark: #0f56bd;
    --ui-cyan: #00a9cf;
    --ui-teal: #0f8fa8;
    --ui-navy: #0b1f3a;
    --ui-deep: #071523;
    --ui-success: #147a48;
    --ui-warning: #9a650e;
    --ui-danger: #b42318;
    --ui-radius-control: 8px;
    --ui-radius-card: 16px;
    --ui-radius-panel: 22px;
    --ui-shadow: 0 20px 55px rgba(12, 42, 67, 0.1);
    --ui-shadow-soft: 0 12px 34px rgba(12, 42, 67, 0.07);
    --ui-shadow-deep: 0 28px 70px rgba(2, 12, 23, 0.28);
}

html {
    background: var(--ui-soft);
    scroll-behavior: smooth;
    scroll-padding-top: 24px;
}

body {
    background: var(--ui-soft);
    color: var(--ui-ink);
    font-size: 15px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
}

button,
input,
select,
textarea {
    color: inherit;
}

button,
a,
input,
select,
textarea {
    -webkit-tap-highlight-color: transparent;
}

:focus-visible {
    outline: 3px solid #46cdf0;
    outline-offset: 3px;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 16px;
    z-index: 10000;
    padding: 10px 16px;
    border-radius: var(--ui-radius-control);
    background: #fff;
    color: var(--ui-deep);
    box-shadow: var(--ui-shadow);
    transform: translateY(-160%);
    transition: transform 0.2s ease;
}

.skip-link:focus {
    transform: translateY(0);
}

.sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Brand */
.brand-lockup {
    display: block;
    width: 166px;
    max-width: 100%;
    flex: 0 0 auto;
    min-width: 0;
    text-decoration: none;
}

.brand-lockup-logo {
    display: block;
    width: 100%;
    height: auto;
}

.brand-lockup-compact {
    width: 150px;
}

/* Shared app shell */
.app-container {
    width: min(100%, 1360px);
    max-width: none;
    padding: 24px clamp(16px, 3vw, 36px) 34px;
}

.app-header,
.app-header-modern {
    display: block;
    margin-bottom: 20px;
    padding: 0;
    overflow: hidden;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-panel);
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--ui-shadow-soft);
}

.app-header-brand {
    display: flex;
    min-height: 68px;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 13px 22px;
    border-bottom: 1px solid var(--ui-line);
}

.app-header-tools {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
}

.language-switcher {
    display: inline-flex;
    align-items: center;
    padding: 3px;
    border: 1px solid var(--ui-line-strong);
    border-radius: 999px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(12, 42, 67, 0.04);
}

.language-switcher a {
    display: grid;
    min-width: 38px;
    min-height: 30px;
    place-items: center;
    border-radius: 999px;
    color: var(--ui-muted);
    font-size: 10px;
    font-weight: 650;
    letter-spacing: 0.06em;
    text-decoration: none;
}

.language-switcher a:hover {
    color: var(--ui-navy);
}

.language-switcher a.active {
    background: var(--ui-navy);
    color: #fff;
}

.language-switcher-compact a {
    min-width: 34px;
    min-height: 27px;
}

.environment-badge {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    gap: 8px;
    padding: 5px 11px;
    border: 1px solid #c7d9e7;
    border-radius: 999px;
    background: var(--ui-soft-blue);
    color: #42627b;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.environment-badge > span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #2bbb72;
    box-shadow: 0 0 0 4px rgba(43, 187, 114, 0.12);
}

.app-header-row {
    display: flex;
    min-height: 102px;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    padding: 20px 22px;
}

.app-title {
    min-width: 0;
    align-items: flex-start;
    gap: 14px;
}

.app-title-icon {
    display: grid;
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    place-items: center;
    border-radius: 12px;
    background: var(--ui-navy);
    color: #fff;
}

.app-title-icon svg {
    width: 21px;
    height: 21px;
}

.app-eyebrow {
    margin: 0 0 3px;
    color: var(--ui-teal);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.14em;
    line-height: 1.2;
    text-transform: uppercase;
}

.app-title h1,
.app-header .app-title h1 {
    margin: 0;
    color: var(--ui-ink);
    font-size: clamp(20px, 2.3vw, 28px);
    font-weight: 500;
    letter-spacing: -0.025em;
    line-height: 1.25;
}

.app-title-description {
    margin: 5px 0 0;
    color: var(--ui-muted);
    font-size: 12px;
    line-height: 1.55;
}

.user-info {
    flex: 0 0 auto;
    gap: 10px;
}

.user-chip {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 10px;
    margin-right: 3px;
    padding-right: 13px;
    border-right: 1px solid var(--ui-line);
}

.user-avatar {
    display: grid;
    width: 36px;
    height: 36px;
    flex: 0 0 36px;
    place-items: center;
    border-radius: 50%;
    background: #eaf4fa;
    color: var(--ui-blue-dark);
    font-size: 13px;
    font-weight: 600;
}

.user-chip > span:last-child {
    display: grid;
    min-width: 0;
    line-height: 1.25;
}

.user-chip small {
    color: var(--ui-muted);
    font-size: 10px;
}

.user-chip strong {
    max-width: 170px;
    overflow: hidden;
    color: var(--ui-ink);
    font-size: 12px;
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: var(--ui-radius-control);
    font-size: 13px;
    font-weight: 500;
    line-height: 1.2;
    transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.btn svg {
    width: 17px;
    height: 17px;
    flex: 0 0 auto;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    border-color: var(--ui-blue);
    background: var(--ui-blue);
    color: #fff;
}

.btn-primary:hover {
    border-color: var(--ui-blue-dark);
    background: var(--ui-blue-dark);
    box-shadow: 0 9px 24px rgba(23, 105, 224, 0.18);
}

.btn-secondary {
    border-color: var(--ui-line-strong);
    background: #fff;
    color: var(--ui-ink-2);
}

.btn-secondary:hover {
    border-color: #93aabc;
    background: var(--ui-soft);
    color: var(--ui-ink);
}

.btn-danger {
    border-color: #f0d0cc;
    background: #fff7f6;
    color: var(--ui-danger);
}

.btn-danger:hover {
    border-color: #dda29a;
    background: #feeceb;
}

.btn-compact {
    min-height: 38px;
    padding: 8px 12px;
    font-size: 11px;
}

/* Admin navigation and content */
.admin-container {
    margin-bottom: 20px;
    padding: clamp(20px, 3vw, 34px);
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-panel);
    background: var(--ui-surface);
    box-shadow: var(--ui-shadow-soft);
}

.admin-nav {
    display: flex;
    width: 100%;
    gap: 4px;
    margin: 0 0 32px;
    padding: 6px;
    overflow-x: auto;
    border: 1px solid var(--ui-line);
    border-radius: 12px;
    background: var(--ui-soft);
    box-shadow: none;
    scrollbar-width: thin;
}

.admin-nav a,
.admin-nav .btn {
    display: inline-flex;
    min-height: 42px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 13px;
    border: 1px solid transparent;
    border-radius: 8px;
    background: transparent;
    color: #52687a;
    font-size: 11px;
    font-weight: 500;
    text-decoration: none;
    white-space: nowrap;
}

.admin-nav a svg {
    width: 16px;
    height: 16px;
}

.admin-nav a:hover {
    border-color: var(--ui-line);
    background: #fff;
    color: var(--ui-ink);
}

.admin-nav a.active,
.admin-nav .btn-primary {
    border-color: var(--ui-navy);
    background: var(--ui-navy);
    color: #fff;
    box-shadow: 0 7px 18px rgba(11, 31, 58, 0.16);
}

.admin-container > h2,
.content-wrapper > h2,
.checksum-header h2 {
    margin: 0 0 16px;
    color: var(--ui-ink);
    font-size: clamp(17px, 2vw, 21px);
    font-weight: 500;
    letter-spacing: -0.02em;
}

.admin-container > h2:not(:first-child) {
    margin-top: 34px;
}

.page-section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin: 32px 0 14px;
}

.page-section-heading h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 500;
}

.page-section-heading p {
    margin: 0;
    color: var(--ui-muted);
    font-size: 12px;
}

/* Forms */
.add-form {
    margin-bottom: 34px;
    padding: 22px;
    border: 1px solid var(--ui-line);
    border-radius: 14px;
    background: var(--ui-soft);
}

.form-group {
    margin-bottom: 22px;
}

.form-group label,
.form-label {
    display: flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 7px;
    color: var(--ui-ink-2);
    font-size: 12px;
    font-weight: 500;
}

.form-group label small {
    color: var(--ui-muted) !important;
    font-size: 10px;
    font-weight: 400;
}

.form-group p {
    margin: 0 0 8px;
    color: var(--ui-muted) !important;
    font-size: 11px !important;
    line-height: 1.55;
}

.form-group input,
.form-group select,
.form-group textarea,
.form-input {
    width: 100%;
    min-height: 46px;
    padding: 10px 13px !important;
    border: 1px solid var(--ui-line-strong) !important;
    border-radius: var(--ui-radius-control) !important;
    background: #fff;
    color: var(--ui-ink);
    font-size: 13px !important;
    box-shadow: 0 1px 2px rgba(12, 42, 67, 0.025);
    transition: border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.form-group input::placeholder,
.form-group textarea::placeholder,
.form-input::placeholder {
    color: #93a2af;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus,
.form-input:focus {
    outline: none;
    border-color: var(--ui-blue) !important;
    box-shadow: 0 0 0 3px rgba(23, 105, 224, 0.11) !important;
}

.form-group input[readonly],
.form-group textarea[readonly],
.form-input[readonly] {
    background: #eef3f6 !important;
    color: #52687a;
}

.form-grid {
    gap: 16px;
}

.form-grid > .form-group {
    min-width: 0;
}

.admin-students .form-grid-5 {
    grid-template-columns:
        minmax(0, 1.35fr)
        minmax(0, 1.4fr)
        minmax(0, 1fr)
        minmax(0, 0.8fr)
        minmax(150px, 0.7fr);
}

.admin-transfer .form-grid-3 {
    grid-template-columns:
        minmax(0, 1fr)
        minmax(0, 1fr)
        minmax(160px, 0.3fr);
}

.form-group .form-select {
    min-width: 0;
    max-width: 100%;
    padding-right: 42px !important;
    overflow: hidden;
    appearance: none;
    -webkit-appearance: none;
    background-color: #fff;
    background-image: url("/assets/images/select-chevron.svg");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 18px 18px;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
}

.form-group .form-select:invalid {
    color: #687c8d;
}

.form-group .form-select option {
    color: var(--ui-ink);
}

.form-submit .btn {
    min-height: 46px;
}

/* Alerts and status */
.alert {
    min-height: 50px;
    padding: 12px 15px;
    border-radius: 10px;
    font-size: 12px;
}

.alert.is-dismissing {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.alert-success {
    border-color: #b9dec9;
    background: #edf9f2;
    color: var(--ui-success);
}

.alert-error {
    border-color: #efc5c0;
    background: #fff2f0;
    color: var(--ui-danger);
}

.badge,
.status-badge {
    display: inline-flex;
    min-height: 25px;
    align-items: center;
    padding: 4px 9px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
}

.badge-success,
.status-active,
.status-valid {
    border-color: #b9dec9;
    background: #edf9f2;
    color: var(--ui-success);
}

.badge-danger,
.status-expired,
.status-invalid {
    border-color: #efc5c0;
    background: #fff2f0;
    color: var(--ui-danger);
}

.badge-warning,
.status-warning {
    border-color: #ead4a6;
    background: #fff8e8;
    color: var(--ui-warning);
}

/* Tables */
.table-responsive {
    margin: 0 0 22px;
    overflow: auto;
    border: 1px solid var(--ui-line);
    border-radius: 13px;
    background: #fff;
}

table {
    margin: 0;
    border-collapse: separate;
    border-spacing: 0;
    background: #fff;
    font-size: 12px;
}

table th,
table td {
    padding: 13px 14px;
    border-bottom: 1px solid #e8eff4;
    color: #3f5365;
    vertical-align: middle;
}

table th {
    position: sticky;
    top: 0;
    z-index: 1;
    background: #f7fafc;
    color: #52687a;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

table tbody tr:last-child td {
    border-bottom: 0;
}

table tbody tr:hover {
    background: #f8fbfd;
}

table code {
    display: inline-block;
    padding: 4px 8px !important;
    border-radius: 6px !important;
    background: #eef3f7 !important;
    color: #35506a;
    font-size: 11px;
}

table .btn {
    min-height: 34px;
    padding: 7px 10px !important;
    font-size: 10px !important;
}

/* Cards and dashboard metrics */
.card,
.checksum-card {
    margin-bottom: 20px;
    overflow: hidden;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-card);
    background: #fff;
    box-shadow: none;
}

.checksum-card {
    padding: 24px;
}

.card-header {
    padding: 19px 24px;
    border-bottom: 1px solid var(--ui-line);
    background: var(--ui-navy);
    color: #fff;
}

.card-header h2,
.card-header h3 {
    font-size: 18px;
    font-weight: 500;
}

.card-header p {
    color: #bdcbd7;
    font-size: 11px;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 34px;
}

.dashboard-stat {
    position: relative;
    min-height: 142px;
    padding: 21px;
    overflow: hidden;
    border: 1px solid var(--ui-line);
    border-radius: 14px;
    background: #fff;
}

.dashboard-stat-link {
    color: inherit;
    text-decoration: none;
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.dashboard-stat-link:hover {
    border-color: #9bb8ce;
    box-shadow: 0 10px 28px rgba(12, 42, 67, 0.08);
    transform: translateY(-2px);
}

.dashboard-stat::after {
    content: "";
    position: absolute;
    right: -33px;
    bottom: -55px;
    width: 118px;
    height: 118px;
    border: 18px solid rgba(23, 105, 224, 0.06);
    border-radius: 50%;
}

.dashboard-stat-label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--ui-muted);
    font-size: 11px;
}

.dashboard-stat-value {
    position: relative;
    z-index: 1;
    color: var(--ui-navy);
    font-size: 30px;
    font-weight: 600;
    letter-spacing: -0.04em;
    line-height: 1.05;
}

.dashboard-stat-meta {
    position: relative;
    z-index: 1;
    margin-top: 8px;
    color: var(--ui-muted);
    font-size: 10px;
}

.dashboard-stat-license.is-active {
    border-color: #b9dec9;
    background: #f7fcf9;
}

.dashboard-stat-license.is-expired {
    border-color: #efc5c0;
    background: #fff8f7;
}

/* Viewer */
.video-section {
    padding: clamp(18px, 3vw, 28px);
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-panel);
    background: #fff;
    box-shadow: var(--ui-shadow-soft);
}

.camera-selector {
    margin-bottom: 22px;
    padding: 18px;
    border: 1px solid var(--ui-line);
    border-radius: 14px;
    background: var(--ui-soft);
    box-shadow: none;
}

.camera-selector h3 {
    margin-bottom: 13px !important;
    color: var(--ui-muted) !important;
    font-size: 11px !important;
    font-weight: 500;
}

.camera-buttons {
    gap: 10px;
}

.camera-btn {
    min-height: 74px;
    gap: 12px;
    padding: 13px 15px;
    border: 1px solid var(--ui-line-strong);
    border-radius: 10px;
    background: #fff;
    color: var(--ui-ink);
    transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease, background 0.18s ease;
}

.camera-btn::before {
    width: 3px;
    background: var(--ui-blue);
}

.camera-btn:hover {
    border-color: #9bb8ce;
    background: #f8fbfd;
    box-shadow: 0 8px 22px rgba(12, 42, 67, 0.08);
    transform: translateY(-1px);
}

.camera-btn.active {
    border-color: var(--ui-blue);
    background: var(--ui-blue);
    color: #fff;
    box-shadow: 0 10px 26px rgba(23, 105, 224, 0.19);
    transform: none;
}

.camera-btn-icon {
    font-size: 24px;
}

.camera-btn-text strong {
    font-size: 14px;
    font-weight: 500;
}

.camera-btn-text small {
    font-size: 10px;
}

.video-header {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 14px;
}

.video-header h2 {
    margin: 0;
    color: var(--ui-ink);
    font-size: clamp(15px, 2vw, 19px);
    font-weight: 500;
}

.video-container {
    border: 1px solid #1f3345;
    border-radius: 14px;
    background: #02070b;
    box-shadow: 0 18px 45px rgba(3, 15, 28, 0.18);
}

.demo-stream-preview {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 28px;
    overflow: hidden;
    background:
        linear-gradient(rgba(39, 66, 88, 0.14) 1px, transparent 1px),
        linear-gradient(90deg, rgba(39, 66, 88, 0.14) 1px, transparent 1px),
        radial-gradient(circle at 50% 35%, #163b58 0, #071523 48%, #02070b 100%);
    background-size: 44px 44px, 44px 44px, auto;
    color: #edf8ff;
    text-align: center;
}

.demo-stream-preview::after {
    content: '';
    position: absolute;
    inset: -25% 0 auto;
    height: 34%;
    background: linear-gradient(180deg, transparent, rgba(87, 215, 245, 0.12), transparent);
    animation: demo-scan 5s linear infinite;
}

.demo-stream-status {
    position: absolute;
    top: 18px;
    left: 18px;
    display: inline-flex;
    gap: 7px;
    align-items: center;
    color: #9fdced;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.13em;
}

.demo-stream-status span {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #57d7f5;
    box-shadow: 0 0 0 5px rgba(87, 215, 245, 0.12);
}

.demo-stream-camera {
    display: grid;
    width: 68px;
    height: 68px;
    place-items: center;
    border: 1px solid rgba(159, 220, 237, 0.28);
    border-radius: 20px;
    background: rgba(7, 21, 35, 0.62);
}

.demo-stream-camera svg {
    width: 34px;
    height: 34px;
}

.demo-stream-preview strong {
    font-size: clamp(18px, 3vw, 27px);
}

.demo-stream-preview small {
    max-width: 540px;
    color: #a9c1d1;
    font-size: clamp(11px, 1.5vw, 14px);
    line-height: 1.65;
}

@keyframes demo-scan {
    to { transform: translateY(420%); }
}

#mute-btn,
#fullscreen-btn {
    min-height: 36px;
    padding: 8px 12px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 8px;
    background: rgba(4, 15, 26, 0.72);
    font-size: 11px;
    backdrop-filter: blur(10px);
}

#loading-overlay {
    background: radial-gradient(circle at center, rgba(17, 44, 66, 0.76), rgba(2, 7, 11, 0.94));
}

.spinner {
    width: 34px;
    height: 34px;
    margin: 0 0 13px;
    border-width: 3px;
    border-top-color: #5ed9f2;
}

/* Modals created by the legacy admin pages */
#editModal,
#cameraModal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(4, 17, 29, 0.68) !important;
    backdrop-filter: blur(8px);
}

body.modal-open {
    overflow: hidden;
}

.modal-panel,
#editModal > div,
#cameraModal > div {
    width: min(100%, 560px);
    padding: clamp(20px, 4vw, 30px);
}

.modal-panel-wide {
    width: min(100%, 640px);
}

.modal-panel h2 {
    margin: 0 0 20px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
}

#editModal > div,
#cameraModal > div {
    max-height: min(86vh, 760px);
    overflow-y: auto;
    border: 1px solid var(--ui-line) !important;
    border-radius: 16px !important;
    background: #fff !important;
    box-shadow: var(--ui-shadow-deep);
}

#editModal h2,
#cameraModal h2 {
    color: var(--ui-ink);
    font-size: 19px;
    font-weight: 500;
}

.camera-item {
    width: 100%;
    font: inherit;
    color: inherit;
    text-align: left;
    border-color: var(--ui-line) !important;
    border-radius: 10px !important;
}

.camera-item:hover {
    border-color: var(--ui-blue) !important;
    background: var(--ui-soft-blue) !important;
}

.player-error-state {
    position: absolute;
    inset: 0;
    z-index: 12;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 10px;
    padding: clamp(22px, 5vw, 46px);
    background: radial-gradient(circle at center, rgba(19, 45, 66, 0.96), rgba(2, 7, 11, 0.98));
    color: #fff;
    text-align: center;
}

.player-error-state strong {
    font-size: clamp(16px, 2vw, 21px);
    font-weight: 500;
}

.player-error-state p {
    max-width: 520px;
    margin: 0 0 5px;
    color: #bed0dd;
    font-size: clamp(11px, 1.5vw, 14px);
}

/* Activity log */
.filter-section {
    padding: clamp(18px, 3vw, 25px) !important;
    border: 1px solid var(--ui-line);
    border-radius: var(--ui-radius-card) !important;
    box-shadow: var(--ui-shadow-soft) !important;
}

.filter-group label {
    color: var(--ui-ink-2) !important;
}

.filter-group input,
.filter-group select {
    border-color: var(--ui-line-strong) !important;
    border-radius: var(--ui-radius-control) !important;
}

.filter-group input:focus,
.filter-group select:focus {
    border-color: var(--ui-blue) !important;
    box-shadow: 0 0 0 3px rgba(23, 105, 224, 0.13) !important;
}

.stats-row {
    display: grid !important;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px !important;
}

.stat-card {
    min-width: 0 !important;
    padding: 18px 20px !important;
    border: 1px solid var(--ui-line) !important;
    border-radius: 12px !important;
    background: #fff !important;
    color: var(--ui-ink) !important;
    box-shadow: none !important;
}

.stat-card .label {
    color: var(--ui-muted);
    opacity: 1 !important;
}

.stat-card .value {
    margin-top: 3px;
    color: var(--ui-navy);
    font-size: clamp(22px, 3vw, 29px) !important;
    font-weight: 600 !important;
}

.pagination .current {
    border-color: var(--ui-blue) !important;
    background: var(--ui-blue) !important;
}

.pagination a:hover {
    border-color: var(--ui-blue) !important;
    background: var(--ui-soft-blue) !important;
    color: var(--ui-blue) !important;
}

/* Login */
.login-page {
    position: relative;
    display: flex;
    min-height: 100vh;
    align-items: stretch;
    justify-content: center;
    padding: clamp(16px, 3vw, 38px);
    overflow-x: hidden;
    background:
        radial-gradient(circle at 18% 12%, rgba(0, 169, 207, 0.19), transparent 33%),
        radial-gradient(circle at 86% 82%, rgba(23, 105, 224, 0.18), transparent 36%),
        var(--ui-deep);
}

.login-page::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
    background-size: 54px 54px;
    mask-image: linear-gradient(110deg, #000, transparent 78%);
}

.login-shell {
    position: relative;
    z-index: 1;
    display: grid;
    width: min(100%, 1120px);
    grid-template-columns: minmax(0, 0.92fr) minmax(390px, 0.72fr);
    align-items: stretch;
    margin: auto;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.045);
    box-shadow: var(--ui-shadow-deep);
}

.login-story {
    display: flex;
    min-width: 0;
    flex-direction: column;
    justify-content: space-between;
    gap: 48px;
    padding: clamp(32px, 5vw, 62px);
    color: #fff;
}

.login-story .brand-lockup-logo {
    filter: brightness(0) invert(1);
}

.login-story-copy {
    max-width: 590px;
}

.login-kicker {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin: 0 0 20px;
    color: #72d9ef;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.login-kicker::before {
    content: "";
    width: 28px;
    height: 1px;
    background: currentColor;
}

.login-story h1 {
    margin: 0 0 20px;
    color: #fff;
    font-size: clamp(34px, 4.6vw, 58px);
    font-weight: 500;
    letter-spacing: -0.055em;
    line-height: 1.1;
    text-wrap: balance;
}

.login-story-copy > p:last-child {
    max-width: 540px;
    margin: 0;
    color: #b7c8d4;
    font-size: 14px;
    line-height: 1.8;
}

.login-proof {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    margin: 0;
    padding: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
    list-style: none;
}

.login-proof li {
    min-width: 0;
    padding: 18px 16px 0 0;
    color: #a9becd;
    font-size: 10px;
    line-height: 1.55;
}

.login-proof strong {
    display: block;
    margin-bottom: 5px;
    color: #69d9ef;
    font-size: 11px;
    font-weight: 600;
}

.login-panel {
    display: flex;
    min-width: 0;
    align-items: center;
    padding: clamp(18px, 3vw, 34px);
    background: #fff;
}

.login-container {
    width: 100%;
    max-width: none;
}

.login-box {
    padding: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    animation: none;
}

.login-header {
    margin-bottom: 24px;
    text-align: left;
}

.login-language {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 18px;
}

.login-header .login-step {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--ui-teal);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.login-header h2,
.login-header h1 {
    margin: 0 0 7px;
    color: var(--ui-ink);
    font-size: clamp(23px, 3vw, 30px);
    font-weight: 500;
    letter-spacing: -0.035em;
    line-height: 1.25;
}

.login-header p {
    margin: 0;
    color: var(--ui-muted);
    font-size: 12px;
}

.login-form {
    margin-bottom: 0;
}

.login-form .form-group {
    margin-bottom: 16px;
}

.login-form .form-group input {
    min-height: 50px;
}

.password-control {
    position: relative;
}

.password-control input {
    padding-right: 70px !important;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 8px;
    min-width: 52px;
    min-height: 34px;
    padding: 5px 8px;
    border: 0;
    border-radius: 7px;
    background: var(--ui-soft-blue);
    color: var(--ui-blue);
    font: inherit;
    font-size: 10px;
    font-weight: 600;
    transform: translateY(-50%);
    cursor: pointer;
}

.login-form .btn-primary {
    min-height: 50px;
}

.login-help {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-top: 14px;
    color: var(--ui-muted);
    font-size: 10px;
}

.demo-account-panel {
    margin-top: 24px;
    padding-top: 21px;
    border-top: 1px solid var(--ui-line);
}

.demo-account-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 11px;
}

.demo-account-heading h3 {
    margin: 0;
    color: var(--ui-ink);
    font-size: 13px;
    font-weight: 500;
}

.demo-account-heading span {
    color: var(--ui-muted);
    font-size: 9px;
}

.demo-account-list {
    display: grid;
    gap: 7px;
}

.demo-account {
    display: grid;
    min-height: 52px;
    grid-template-columns: 34px minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
    padding: 8px 10px;
    border: 1px solid var(--ui-line);
    border-radius: 10px;
    background: #fff;
    color: var(--ui-ink);
    text-align: left;
    transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

.demo-account:hover {
    border-color: #9bb8ce;
    background: var(--ui-soft-blue);
    transform: translateY(-1px);
}

.demo-account.is-selected {
    border-color: var(--ui-blue);
    background: #eef5ff;
    box-shadow: 0 0 0 2px rgba(23, 105, 224, 0.08);
}

.demo-account-icon {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border-radius: 9px;
    background: #eaf4fa;
    color: var(--ui-blue);
}

.demo-account-icon svg {
    width: 18px;
    height: 18px;
}

.demo-account-copy {
    display: grid;
    min-width: 0;
    line-height: 1.25;
}

.demo-account-copy strong {
    color: var(--ui-ink);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.demo-account-copy small {
    margin-top: 3px;
    overflow: hidden;
    color: var(--ui-muted);
    font-size: 9px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.demo-account-action {
    color: var(--ui-blue);
    font-size: 9px;
    font-weight: 600;
}

.demo-account-admin .demo-account-icon {
    background: #fff4e6;
    color: #a86408;
}

.demo-credential-note {
    margin: 10px 0 0;
    padding: 9px 11px;
    border-radius: 8px;
    background: var(--ui-soft);
    color: var(--ui-muted);
    font-size: 9px;
    line-height: 1.55;
}

.login-footer {
    margin-top: 16px;
    text-align: left;
}

.login-footer .text-muted {
    color: var(--ui-muted);
    font-size: 9px;
}

/* Terms and license pages */
body.terms-page,
body.license-page {
    background:
        radial-gradient(circle at 14% 8%, rgba(0, 169, 207, 0.16), transparent 31%),
        var(--ui-deep) !important;
}

.terms-card {
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: var(--ui-radius-panel) !important;
    box-shadow: var(--ui-shadow-deep) !important;
}

.terms-header,
.license-page .header {
    background: var(--ui-navy) !important;
}

.terms-header .icon {
    font-size: 37px !important;
}

.terms-header h1 {
    font-weight: 500 !important;
}

.terms-body {
    scrollbar-color: #9eb3c4 #edf2f6;
}

.terms-body .section-title {
    color: var(--ui-ink) !important;
    border-bottom-color: var(--ui-line) !important;
}

.terms-body .section-title .badge {
    background: var(--ui-blue) !important;
}

.terms-body .section p,
.terms-body .data-list li {
    color: #52687a !important;
}

.highlight-box {
    border-left-color: var(--ui-blue) !important;
    background: var(--ui-soft-blue) !important;
}

.retention-box {
    border-left-color: #d99a2b !important;
    background: #fff8e8 !important;
}

.btn-accept {
    background: var(--ui-blue) !important;
}

.checkbox-wrap input[type="checkbox"] {
    accent-color: var(--ui-blue) !important;
}

.checkbox-wrap label strong {
    color: var(--ui-blue) !important;
}

.btn-accept:disabled {
    cursor: not-allowed;
    opacity: 0.45;
}

.btn-logout {
    color: var(--ui-muted) !important;
}

.terms-status {
    min-height: 20px;
    margin: 8px 0 0;
    color: var(--ui-danger);
    font-size: 11px;
    text-align: center;
}

.license-page .container {
    max-width: 1100px !important;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.13);
    border-radius: var(--ui-radius-panel) !important;
    box-shadow: var(--ui-shadow-deep) !important;
}

.license-page .left-panel {
    background: var(--ui-soft) !important;
    border-right-color: var(--ui-line) !important;
}

.license-page .panel-title {
    color: var(--ui-ink) !important;
    font-weight: 500 !important;
}

.license-page .info-card {
    border: 1px solid var(--ui-line);
    box-shadow: none !important;
}

.license-page .content {
    min-height: 0 !important;
}

.license-page .contact-info {
    background: var(--ui-navy) !important;
}

.license-page .form-input:focus {
    border-color: var(--ui-blue) !important;
    box-shadow: 0 0 0 3px rgba(23, 105, 224, 0.13) !important;
}

.license-page .info-value {
    overflow-wrap: anywhere;
}

/* Footer */
.app-footer {
    display: flex;
    min-height: 64px;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px 18px;
    margin-top: auto;
    padding: 16px 24px;
    border-top: 1px solid var(--ui-line);
    background: #fff;
    box-shadow: none;
}

.app-footer p {
    color: var(--ui-muted);
    font-size: 10px;
}

.app-footer a {
    color: var(--ui-blue);
}

.app-footer nav {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    font-size: 10px;
}

.app-footer nav a {
    text-decoration: none;
}

.app-footer nav a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.login-page .app-footer {
    display: none;
}

/* Utility boxes */
.info-box,
.warning-box {
    padding: 14px 16px !important;
    border-radius: 9px !important;
    font-size: 11px;
    line-height: 1.65;
}

.info-box {
    border-left-color: var(--ui-blue) !important;
    background: var(--ui-soft-blue) !important;
}

.warning-box {
    border-left-color: #d99a2b !important;
    background: #fff8e8 !important;
}

.file-item {
    border: 1px solid var(--ui-line);
    background: var(--ui-soft) !important;
}

.file-hash {
    color: #52687a !important;
}

.readonly-badge {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 5px 11px;
    border: 1px solid rgba(177, 109, 13, 0.28);
    border-radius: 999px;
    background: #fff5df;
    color: #8b5205;
    font-size: 12px;
    font-weight: 800;
}

.readonly-notice {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin: 14px 0 0;
    padding: 14px 18px;
    border: 1px solid #eed4a9;
    border-radius: 14px;
    background: #fff9ec;
    color: #70440b;
    line-height: 1.55;
}

.logout-form {
    display: inline-flex;
    margin: 0;
}

.logout-form .btn {
    margin: 0;
}

.demo-readonly form[method="POST" i]:not(.logout-form),
.demo-readonly button[onclick],
.demo-readonly input[onclick],
.demo-readonly .write-only {
    display: none !important;
}

.demo-account-password {
    display: block;
    margin-top: 3px;
    color: #52687a;
}

.demo-account-password strong {
    color: var(--ui-navy);
    letter-spacing: 0.06em;
}

@media (max-width: 1080px) {
    .admin-students .form-grid-5,
    .admin-transfer .form-grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .admin-students .form-grid-5 .form-submit,
    .admin-transfer .form-grid-3 .form-submit {
        grid-column: 1 / -1;
    }

    .dashboard-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .login-shell {
        grid-template-columns: minmax(0, 0.82fr) minmax(370px, 0.78fr);
    }

    .login-story {
        padding: 38px;
    }
}

@media (max-width: 820px) {
    .admin-students .form-grid-5,
    .admin-transfer .form-grid-3 {
        grid-template-columns: minmax(0, 1fr);
    }

    .admin-students .form-grid-5 .form-submit,
    .admin-transfer .form-grid-3 .form-submit {
        grid-column: auto;
    }

    .app-container {
        padding: 12px 12px 24px;
    }

    .app-header,
    .admin-container,
    .video-section {
        border-radius: 16px;
    }

    .app-header-brand {
        min-height: 60px;
        flex-wrap: wrap;
        gap: 9px 14px;
        padding: 11px 15px;
    }

    .app-header-tools {
        gap: 7px;
    }

    .app-header-row {
        display: grid;
        gap: 16px;
        padding: 17px 15px;
    }

    .user-info {
        width: 100%;
        justify-content: flex-start;
    }

    .user-chip {
        flex: 1 1 auto;
    }

    .admin-container {
        padding: 16px;
    }

    .admin-nav {
        flex-direction: row;
        flex-wrap: nowrap;
        margin-bottom: 24px;
    }

    .admin-nav a {
        width: auto;
        text-align: left;
    }

    .login-page {
        padding: 12px;
    }

    .login-shell {
        width: min(100%, 620px);
        grid-template-columns: 1fr;
        border-radius: 18px;
    }

    .login-story {
        gap: 0;
        padding: 19px 24px;
    }

    .login-story-copy,
    .login-proof {
        display: none;
    }

    .login-panel {
        padding: 26px;
    }
}

@media (max-width: 560px) {
    body {
        font-size: 14px;
    }

    .environment-badge {
        display: none;
    }

    .brand-lockup-compact {
        width: 142px;
    }

    .app-header-tools {
        margin-left: auto;
    }

    .app-title-icon {
        width: 38px;
        height: 38px;
        flex-basis: 38px;
    }

    .app-title h1,
    .app-header .app-title h1 {
        font-size: 19px;
    }

    .user-info {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .user-chip {
        grid-column: 1 / -1;
        padding: 0 0 11px;
        border-right: 0;
        border-bottom: 1px solid var(--ui-line);
    }

    .user-info .btn {
        width: 100%;
    }

    .demo-readonly .user-info {
        grid-template-columns: 1fr;
    }

    .demo-readonly .logout-form,
    .demo-readonly .logout-form .btn {
        width: 100%;
    }

    .dashboard-stats {
        grid-template-columns: 1fr;
    }

    .dashboard-stat {
        min-height: 124px;
    }

    .admin-container {
        padding: 14px;
    }

    .add-form {
        padding: 14px;
    }

    .table-responsive {
        margin-right: -2px;
    }

    table {
        min-width: 650px;
    }

    .video-section {
        padding: 12px;
    }

    .video-header h2 {
        display: block;
        line-height: 1.55;
    }

    .video-container {
        border-radius: 9px;
    }

    #mute-btn,
    #fullscreen-btn {
        bottom: 8px;
        min-height: 32px;
        padding: 6px 9px;
        font-size: 9px;
    }

    .login-story {
        padding: 17px 18px;
    }

    .login-panel {
        padding: 22px 18px;
    }

    .demo-account-action {
        display: none;
    }

    .demo-account {
        grid-template-columns: 32px minmax(0, 1fr);
    }

    .terms-card {
        border-radius: 16px !important;
    }

    .terms-header,
    .terms-body,
    .terms-footer {
        padding-left: 20px !important;
        padding-right: 20px !important;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}