/* ============================================================
   Login & Session Select Styles
   ============================================================ */

/* ---- Auth Page Layout ---- */

.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 16px 40px;
    gap: 20px;
    background: radial-gradient(ellipse at 50% 0%, rgba(114, 137, 218, 0.08) 0%, transparent 60%),
                var(--bg-primary);
}

/* ---- Branding ---- */

.auth-branding {
    text-align: center;
}

.auth-logo {
    font-size: 48px;
    line-height: 1;
    margin-bottom: 12px;
    display: block;
}

.auth-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.auth-subtitle {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ---- Auth Card ---- */

.auth-card {
    width: 100%;
    max-width: 420px;
    overflow: hidden;
    padding: 0;
}

/* ---- Tab Bar ---- */

.auth-tabs {
    display: flex;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-tertiary);
}

.auth-tab {
    flex: 1;
    padding: 14px 16px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition), border-color var(--transition), background-color var(--transition);
    outline: none;
    margin-bottom: -1px;
}

.auth-tab:hover {
    color: var(--text-primary);
    background-color: var(--bg-hover);
}

.auth-tab.active {
    color: var(--accent-text);
    border-bottom-color: var(--accent);
    background-color: var(--bg-secondary);
}

.auth-tab:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* ---- Inline message ---- */

.auth-message {
    padding: 10px 16px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-left: 3px solid transparent;
}

.auth-message.error {
    background-color: rgba(240, 71, 71, 0.12);
    border-left-color: var(--danger);
    color: #ff7070;
}

.auth-message.success {
    background-color: rgba(67, 181, 129, 0.12);
    border-left-color: var(--success);
    color: #5dcea0;
}

/* ---- Auth Panel ---- */

.auth-panel {
    padding: 24px;
    animation: fadeIn 0.15s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Form Elements ---- */

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

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

/* Override global .input for auth page context */
.auth-panel .input {
    background-color: var(--bg-primary);
}

/* ---- Divider ---- */

.auth-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 20px 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* ---- OAuth Buttons ---- */

.oauth-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.oauth-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 9px 12px;
    text-decoration: none;
}

.oauth-btn:hover {
    text-decoration: none;
}

.oauth-discord:hover {
    border-color: #5865F2;
    color: #7289da;
}

/* ---- Quick Join ---- */

.quick-join {
    width: 100%;
    max-width: 420px;
    text-align: center;
}

.quick-join-toggle {
    background: none;
    border: none;
    color: var(--text-muted);
    font-family: var(--font);
    font-size: var(--font-size-sm);
    cursor: pointer;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background-color var(--transition);
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.quick-join-toggle::after {
    content: '▼';
    font-size: 10px;
    transition: transform var(--transition);
}

.quick-join-toggle.open::after {
    transform: rotate(180deg);
}

.quick-join-toggle:hover {
    color: var(--text-secondary);
    background-color: var(--bg-tertiary);
}

.quick-join-form {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-top: 8px;
    animation: fadeIn 0.15s ease;
}

/* ============================================================
   Session Select Screen
   ============================================================ */

.session-page {
    min-height: calc(100vh - 56px);
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 16px;
    gap: 32px;
    background: radial-gradient(ellipse at 50% 0%, rgba(114, 137, 218, 0.06) 0%, transparent 60%),
                var(--bg-primary);
}

.session-welcome {
    text-align: center;
}

.session-welcome h2 {
    font-size: var(--font-size-xl);
    margin-bottom: 4px;
}

.session-welcome p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ---- Action Cards ---- */

.session-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    width: 100%;
    max-width: 600px;
}

.action-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 20px;
    cursor: pointer;
    transition: border-color var(--transition), background-color var(--transition), transform var(--transition), box-shadow var(--transition);
    text-align: center;
    outline: none;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.action-card:hover,
.action-card:focus-visible {
    border-color: var(--accent);
    background-color: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.action-card.active {
    border-color: var(--accent);
    background-color: rgba(114, 137, 218, 0.08);
}

.action-card-icon {
    font-size: 36px;
    line-height: 1;
}

.action-card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
}

.action-card-desc {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.4;
}

/* ---- Session Content Area ---- */

.session-content {
    width: 100%;
    max-width: 700px;
    animation: fadeIn 0.2s ease;
}

/* ---- Back button ---- */

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: 20px;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}

.back-btn:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-light);
}

/* ---- Create Session Form ---- */

.create-session-card {
    background-color: var(--bg-secondary);
    border: 1px dashed var(--border-light);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 16px;
}

.create-session-card h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 12px;
}

.create-session-row {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.create-session-row .input {
    flex: 1;
}

/* ---- Session Gallery ---- */

#session-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.session-item {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.session-item:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.session-image {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-hover) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--text-muted);
    overflow: hidden;
    position: relative;
}

.session-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.session-image-controls {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 2;
}

.session-image-upload {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.session-image-upload-cta,
.session-image-menu-trigger,
.session-image-menu-item {
    border: 1px solid rgba(0, 0, 0, 0.12);
    background: rgba(20, 20, 20, 0.75);
    color: #fff;
    border-radius: 8px;
    padding: 6px 10px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
}

.session-image-upload-cta:hover,
.session-image-menu-trigger:hover,
.session-image-menu-item:hover {
    background: rgba(20, 20, 20, 0.88);
}

.session-image-upload-cta:disabled,
.session-image-menu-trigger:disabled,
.session-image-menu-item:disabled {
    opacity: 0.65;
    cursor: wait;
}

.session-image-menu {
    position: relative;
}

.session-image-menu-trigger {
    min-width: 38px;
    text-align: center;
}

/* Must not override the HTML `hidden` attribute (author `display: grid` was winning over [hidden]). */
.session-image-menu-list {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 144px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    padding: 4px;
    display: grid;
    gap: 4px;
    z-index: 5;
}

.session-image-menu-list[hidden] {
    display: none !important;
}

.session-image-menu-item {
    width: 100%;
    text-align: left;
    background: transparent;
    color: var(--text-primary);
    border: 1px solid transparent;
}

.session-image-menu-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.session-info {
    padding: 12px;
}

.session-info h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-info p {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin: 0;
}

.session-enter-btn {
    display: block;
    width: 100%;
    margin-top: 10px;
    padding: 7px;
    background-color: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: background-color var(--transition);
}

.session-enter-btn:hover {
    background-color: var(--accent-hover);
}

/* ---- Join Form ---- */

.join-session-card {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    max-width: 400px;
    margin: 0 auto;
}

.join-session-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 8px;
}

.join-session-card p {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: 18px;
}

/* Previously joined sessions (Join tab) */
.joined-sessions-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.joined-sessions-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.joined-session-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-family: var(--font);
    text-align: left;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.joined-session-item:hover:not(:disabled) {
    border-color: var(--accent);
    box-shadow: var(--shadow);
}

.joined-session-item:disabled {
    opacity: 0.7;
    cursor: wait;
}

.joined-session-thumb {
    width: 80px;
    height: 48px;
    object-fit: cover;
    border-radius: var(--radius-sm);
}

.joined-session-name {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.joined-session-code {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-left: auto;
}

.no-sessions,
.loading-msg {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 32px 20px;
    font-size: var(--font-size-sm);
    grid-column: 1 / -1;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 480px) {
    .session-actions {
        grid-template-columns: 1fr;
        max-width: 340px;
    }

    .oauth-buttons {
        grid-template-columns: 1fr;
    }

    .create-session-row {
        flex-direction: column;
    }

    .create-session-row .btn {
        width: 100%;
    }
}