/* === Cloudscape Dark Mode Design Tokens === */
:root {
    /* Background */
    --color-background-layout-main: #0f1b2a;
    --color-background-container-content: #192534;
    --color-background-container-header: #1a2b3c;
    --color-background-input-default: #0f1b2a;
    --color-background-item-selected: #192534;
    --color-background-notification-blue: #00142b;
    --color-background-status-info: #00142b;
    --color-background-badge: #539fe5;

    /* Text */
    --color-text-body-default: #d1d5db;
    --color-text-body-secondary: #8d99a8;
    --color-text-heading-default: #e9ebed;
    --color-text-interactive-default: #539fe5;
    --color-text-status-inactive: #5f6b7a;
    --color-text-label: #d1d5db;

    /* Border */
    --color-border-divider-default: #354150;
    --color-border-container: #354150;
    --color-border-input-default: #5f6b7a;
    --color-border-input-focused: #539fe5;
    --color-border-status-info: #539fe5;

    /* Interactive */
    --color-background-button-primary-default: #539fe5;
    --color-background-button-primary-hover: #89bcee;
    --color-text-button-primary: #0f1b2a;
    --color-background-button-normal: transparent;
    --color-text-button-normal: #539fe5;
    --color-border-button-normal: #539fe5;

    /* Status */
    --color-text-status-success: #29ad32;
    --color-text-status-error: #eb6f6f;
    --color-text-status-warning: #f89256;
    --color-background-status-success: #052e0d;
    --color-background-status-error: #1a0000;

    /* Spacing */
    --space-xs: 4px;
    --space-s: 8px;
    --space-m: 12px;
    --space-l: 16px;
    --space-xl: 20px;
    --space-xxl: 24px;

    /* Radius */
    --border-radius-container: 16px;
    --border-radius-item: 8px;
    --border-radius-button: 8px;
    --border-radius-input: 8px;

    /* Shadows */
    --shadow-container: 0 1px 4px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.3);

    /* Session colors */
    --session-1: #29ad32;
    --session-2: #539fe5;
    --session-3: #eb6f6f;
    --session-4: #b088f5;
    --session-5: #f89256;
    --session-6: #36d6d6;
    --session-7: #f2d74e;
    --session-8: #e07bde;
}

/* === Reset === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', 'Amazon Ember', -apple-system, sans-serif;
    background: var(--color-background-layout-main);
    color: var(--color-text-body-default);
    min-height: 100vh;
    line-height: 1.6;
    font-size: 14px;
}

.hidden { display: none !important; }

/* === Top Navigation === */
.awsui-top-navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    height: 48px;
    background: #0f1b2a;
    border-bottom: 1px solid var(--color-border-divider-default);
    position: sticky;
    top: 0;
    z-index: 100;
}

.awsui-top-nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-logo {
    height: 24px;
    filter: brightness(0) invert(1);
}

.nav-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-heading-default);
}

.awsui-top-nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* === App Layout === */
.awsui-app-layout {
    display: flex;
    min-height: calc(100vh - 48px);
}

.awsui-content {
    flex: 1;
    padding: 24px 32px;
    max-width: 900px;
    margin: 0 auto;
}

.awsui-content-header {
    margin-bottom: 24px;
}

.awsui-content-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-heading-default);
    margin-bottom: 4px;
}

.awsui-content-header p {
    font-size: 14px;
    color: var(--color-text-body-secondary);
}

/* === Sidebar === */
.awsui-sidebar {
    width: 360px;
    border-left: 1px solid var(--color-border-divider-default);
    background: var(--color-background-container-content);
    overflow-y: auto;
    max-height: calc(100vh - 48px);
    position: sticky;
    top: 48px;
}

.awsui-panel {
    padding: 20px;
}

.awsui-panel-header {
    margin-bottom: 16px;
}

.awsui-panel-header h2 {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text-heading-default);
}

/* === Buttons === */
.awsui-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 16px;
    font-size: 14px;
    font-weight: 700;
    border-radius: var(--border-radius-button);
    cursor: pointer;
    transition: all 0.15s;
    border: 2px solid transparent;
    text-decoration: none;
    line-height: 22px;
}

.awsui-button-primary {
    background: var(--color-background-button-primary-default);
    color: var(--color-text-button-primary);
    border-color: var(--color-background-button-primary-default);
}

.awsui-button-primary:hover {
    background: var(--color-background-button-primary-hover);
    border-color: var(--color-background-button-primary-hover);
}

.awsui-button-normal {
    background: var(--color-background-button-normal);
    color: var(--color-text-button-normal);
    border-color: var(--color-border-button-normal);
}

.awsui-button-normal:hover {
    background: rgba(83,159,229,0.1);
}

.awsui-button-link {
    background: none;
    border: none;
    color: var(--color-text-interactive-default);
    padding: 6px 12px;
}

.awsui-button-link:hover {
    text-decoration: underline;
}

/* === Form Fields === */
.awsui-form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 16px;
}

.awsui-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-label);
}

.awsui-input {
    padding: 8px 12px;
    background: var(--color-background-input-default);
    border: 2px solid var(--color-border-input-default);
    border-radius: var(--border-radius-input);
    color: var(--color-text-body-default);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
}

.awsui-input:focus {
    border-color: var(--color-border-input-focused);
}

.awsui-select {
    padding: 8px 12px;
    background: var(--color-background-input-default);
    border: 2px solid var(--color-border-input-default);
    border-radius: var(--border-radius-input);
    color: var(--color-text-body-default);
    font-size: 14px;
    font-family: inherit;
    outline: none;
}

.awsui-select:focus {
    border-color: var(--color-border-input-focused);
}

/* === Toggle === */
.awsui-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.awsui-toggle input { display: none; }

.awsui-toggle-slider {
    width: 36px;
    height: 20px;
    background: var(--color-border-input-default);
    border-radius: 10px;
    position: relative;
    transition: background 0.2s;
}

.awsui-toggle-slider::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 14px;
    height: 14px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.2s;
}

.awsui-toggle input:checked + .awsui-toggle-slider {
    background: var(--color-text-status-success);
}

.awsui-toggle input:checked + .awsui-toggle-slider::after {
    transform: translateX(16px);
}

.awsui-toggle-label {
    font-size: 14px;
    color: var(--color-text-body-secondary);
}

/* === Divider === */
.awsui-divider {
    border: none;
    border-top: 1px solid var(--color-border-divider-default);
    margin: 16px 0;
}

/* === Alert === */
.awsui-alert {
    padding: 10px 16px;
    border-radius: var(--border-radius-item);
    font-size: 13px;
}

.awsui-alert-error {
    background: var(--color-background-status-error);
    border: 1px solid var(--color-text-status-error);
    color: var(--color-text-status-error);
}

/* === Login Screen === */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-background-layout-main);
}

.login-container {
    text-align: center;
    padding: 40px;
    background: var(--color-background-container-content);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-container);
    box-shadow: var(--shadow-container);
    width: 100%;
    max-width: 400px;
}

.login-logo {
    width: 64px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}

.login-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--color-text-heading-default);
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--color-text-body-secondary);
    font-size: 14px;
    margin-bottom: 28px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
}

/* === Session Cards (Container style) === */
.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.session-card {
    display: flex;
    align-items: stretch;
    background: var(--color-background-container-content);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-container);
    overflow: hidden;
    transition: all 0.15s;
    box-shadow: var(--shadow-container);
    opacity: 0.5;
}

.session-card.enabled {
    opacity: 1;
    cursor: pointer;
}

.session-card.enabled:hover {
    border-color: var(--color-border-input-focused);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}

.session-card.next-session {
    border-color: var(--session-color, var(--color-background-badge));
    box-shadow: 0 0 0 1px var(--session-color, var(--color-background-badge)), var(--shadow-container);
    animation: nextPulse 3s ease-in-out infinite;
    opacity: 1;
}

@keyframes nextPulse {
    0%, 100% { box-shadow: 0 0 0 1px var(--session-color, var(--color-background-badge)), var(--shadow-container); }
    50% { box-shadow: 0 0 0 1px var(--session-color, var(--color-background-badge)), 0 0 16px rgba(83,159,229,0.15); }
}

.session-indicator {
    width: 4px;
    flex-shrink: 0;
    background: var(--color-border-divider-default);
    transition: background 0.2s;
}

.session-card.enabled .session-indicator {
    background: var(--session-color, var(--color-background-badge));
}

.session-number-col {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    flex-shrink: 0;
}

.session-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
    background: var(--color-background-layout-main);
    border: 2px solid var(--color-border-divider-default);
    color: var(--color-text-status-inactive);
    transition: all 0.2s;
}

.session-card.enabled .session-number {
    background: var(--session-color);
    border-color: var(--session-color);
    color: #0f1b2a;
}

.session-body {
    flex: 1;
    padding: 16px 16px 16px 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.session-date {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-text-status-inactive);
    transition: color 0.2s;
}

.session-card.enabled .session-date {
    color: var(--session-color);
}

.session-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--color-text-status-inactive);
    transition: color 0.2s;
}

.session-card.enabled .session-title {
    color: var(--color-text-heading-default);
}

.session-description {
    font-size: 13px;
    color: var(--color-text-status-inactive);
    transition: color 0.2s;
}

.session-card.enabled .session-description {
    color: var(--color-text-body-secondary);
}

.session-status {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    flex-shrink: 0;
}

.session-lock {
    font-size: 16px;
    opacity: 0.4;
}

.session-card.enabled .session-lock {
    opacity: 1;
}

.session-register-link {
    font-size: 12px;
    font-weight: 700;
    color: var(--color-text-interactive-default);
    text-decoration: none;
    white-space: nowrap;
}

.session-register-link:hover {
    text-decoration: underline;
}

/* === Countdown Badge === */
.countdown-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--color-background-notification-blue);
    border: 1px solid var(--color-border-status-info);
    border-radius: var(--border-radius-item);
    padding: 6px 12px;
    min-width: 52px;
}

.countdown-pre {
    font-size: 9px;
    color: var(--color-text-interactive-default);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

.countdown-number {
    font-size: 20px;
    font-weight: 800;
    color: var(--color-text-interactive-default);
    line-height: 1;
}

.countdown-text {
    font-size: 9px;
    color: var(--color-text-interactive-default);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.8;
}

/* === Modal === */
.awsui-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.awsui-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.7);
}

.awsui-modal-content {
    position: relative;
    background: var(--color-background-container-content);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-container);
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    width: 90%;
    max-width: 680px;
    max-height: 85vh;
    overflow-y: auto;
    z-index: 1;
}

.awsui-modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 20px 24px 12px;
    border-bottom: 1px solid var(--color-border-divider-default);
}

.awsui-modal-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-text-heading-default);
}

.modal-date {
    font-size: 13px;
    color: var(--color-text-interactive-default);
    margin-top: 2px;
}

.awsui-modal-dismiss {
    background: none;
    border: none;
    color: var(--color-text-body-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.15s;
}

.awsui-modal-dismiss:hover {
    background: rgba(255,255,255,0.05);
    color: var(--color-text-heading-default);
}

.awsui-modal-body {
    padding: 20px 24px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* === Content Items === */
.content-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--color-background-layout-main);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-item);
    transition: border-color 0.15s;
}

.content-item:hover {
    border-color: var(--color-border-input-focused);
}

.content-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.content-icon.url { background: rgba(83,159,229,0.15); }
.content-icon.video { background: rgba(235,111,111,0.15); }
.content-icon.file { background: rgba(41,173,50,0.15); }

.content-info { flex: 1; min-width: 0; }

.content-info-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-heading-default);
}

.content-info-type {
    font-size: 11px;
    color: var(--color-text-body-secondary);
    text-transform: uppercase;
}

.content-action {
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid;
    transition: all 0.15s;
    text-decoration: none;
    background: transparent;
}

.content-action.view {
    color: var(--color-text-interactive-default);
    border-color: var(--color-text-interactive-default);
}

.content-action.download {
    color: var(--color-text-status-success);
    border-color: var(--color-text-status-success);
}

.content-action.play {
    color: var(--color-text-status-error);
    border-color: var(--color-text-status-error);
}

.content-action:hover { opacity: 0.8; }

.video-embed {
    width: 100%;
    aspect-ratio: 16/9;
    border-radius: var(--border-radius-item);
    border: 1px solid var(--color-border-container);
    margin-top: 8px;
    background: #000;
}

.no-content-message {
    text-align: center;
    padding: 32px 20px;
    color: var(--color-text-status-inactive);
    font-size: 14px;
}

/* === Admin === */
.admin-sessions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.admin-session-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: var(--color-background-layout-main);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-item);
}

.admin-session-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.admin-session-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 11px;
    background: var(--color-background-layout-main);
    border: 2px solid var(--color-border-divider-default);
    color: var(--color-text-status-inactive);
}

.admin-session-row.enabled .admin-session-num {
    background: var(--session-color);
    border-color: var(--session-color);
    color: #0f1b2a;
}

.admin-session-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-body-default);
}

.btn-edit {
    padding: 4px 12px;
    background: transparent;
    border: 1px solid var(--color-text-interactive-default);
    border-radius: 6px;
    color: var(--color-text-interactive-default);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.btn-edit:hover { background: rgba(83,159,229,0.1); }

/* === Add content form === */
.add-content-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px;
    background: var(--color-background-layout-main);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-item);
}

.awsui-heading-s {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-text-heading-default);
    margin-bottom: 8px;
}

.awsui-heading-xs {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-body-secondary);
    margin-bottom: 8px;
}

.content-items-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.btn-remove {
    background: transparent;
    color: var(--color-text-status-error);
    border: 1px solid var(--color-text-status-error);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
}

.btn-remove:hover { background: rgba(235,111,111,0.1); }

/* === Upload Progress === */
.upload-progress {
    display: flex;
    align-items: center;
    gap: 10px;
    height: 24px;
    background: var(--color-background-layout-main);
    border: 1px solid var(--color-border-container);
    border-radius: 6px;
    overflow: hidden;
    position: relative;
}

.upload-progress-fill {
    height: 100%;
    background: var(--color-background-button-primary-default);
    border-radius: 6px;
    transition: width 0.2s ease;
}

.upload-progress-text {
    position: absolute;
    right: 8px;
    font-size: 11px;
    font-weight: 700;
    color: var(--color-text-heading-default);
}

/* === Analytics === */
.analytics-body {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.analytics-summary {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.analytics-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px 14px;
    background: var(--color-background-layout-main);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-item);
    min-width: 80px;
}

.analytics-stat-count {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-text-interactive-default);
}

.analytics-stat-label {
    font-size: 10px;
    color: var(--color-text-body-secondary);
    text-align: center;
}

.analytics-log {
    display: flex;
    flex-direction: column;
    gap: 1px;
    max-height: 250px;
    overflow-y: auto;
    background: var(--color-background-layout-main);
    border: 1px solid var(--color-border-container);
    border-radius: var(--border-radius-item);
    padding: 6px;
}

.analytics-row {
    display: flex;
    gap: 8px;
    padding: 4px 6px;
    font-size: 11px;
    border-radius: 4px;
}

.analytics-row:nth-child(odd) {
    background: rgba(255,255,255,0.02);
}

.analytics-time {
    color: var(--color-text-status-inactive);
    min-width: 80px;
    flex-shrink: 0;
}

.analytics-event {
    color: var(--color-text-interactive-default);
    font-weight: 600;
    min-width: 90px;
    flex-shrink: 0;
}

.analytics-detail {
    color: var(--color-text-body-secondary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.analytics-role {
    color: var(--color-text-status-inactive);
    min-width: 40px;
    text-align: right;
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--color-border-divider-default); border-radius: 3px; }

/* === Responsive === */
@media (max-width: 768px) {
    .awsui-app-layout { flex-direction: column; }
    .awsui-sidebar { width: 100%; max-height: none; position: static; border-left: none; border-top: 1px solid var(--color-border-divider-default); }
    .awsui-content { padding: 16px; }
    .awsui-modal-content { width: 95%; }
}