/* ========================================
   Session Page - Clean Minimal Styles
   ======================================== */

/* --- CSS Variables --- */
:root {
    --color-primary: #66B3FF;
    --color-danger: #FF4D4D;
    --color-success: #66CC66;
    --color-warning: #FFA500;
    --color-border: #404040;
    --bg-dark: #242424;
    --text-dark: #f0f0f0;
    --card-dark: #2a2a2a;
    --text-muted: #A0A0A0;
}

/* --- Base Styles --- */
html {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

/* --- Typography --- */
h2 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

h3 {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-dark);
}

/* --- Main Session Card --- */
#sessionStatusModal {
    width: 100%;
    min-height: 100vh;
    padding: 20px 10px 10px 10px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    box-sizing: border-box;
}

.modal-content {
    background-color: var(--bg-dark);
    width: 95%;
    max-width: 700px;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--color-border);
    transition: padding 0.3s;
}

.modal-content.collapsed {
    padding: 8px 16px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 12px;
    margin-bottom: 12px;
    transition: all 0.3s;
}

.modal-content.collapsed .modal-header {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.modal-content.collapsed .modal-body {
    display: none;
}


.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-dark);
    padding: 2px;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color 0.2s;
}

.close-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* --- Overview Section (3 columns) --- */
.overview-section {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0;
    margin-bottom: 20px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
}

.overview-column {
    padding: 20px;
    position: relative;
}

.overview-column:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20px;
    bottom: 20px;
    width: 1px;
    background-color: var(--color-border);
}

.overview-column h3 {
    margin-bottom: 16px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding: 8px 0;
}

.status-item .label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.status-item .value {
    font-weight: 600;
    font-size: 0.85rem;
    text-align: right;
}

.status-bound {
    color: var(--color-success);
}

/* Status colors */
.status-flag.green { color: var(--color-success); }
.status-flag.amber { color: var(--color-warning); }
.status-flag.red { color: var(--color-danger); }

/* Inspector button */
.inspector-btn {
    background: none;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 4px;
    margin-left: 0px;
    border-radius: 4px;
    transition: all 0.2s ease;
    opacity: 0.6;
}

.inspector-btn:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.session-count-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.warning-icon {
    color: var(--color-warning);
}

/* Timer column */
.timer-item {
    display: flex;
    flex-direction: column;
    margin-bottom: 12px;
}

.timer-item span {
    font-size: 0.7rem;
    color: var(--text-muted);
}

.timer-item strong {
    font-size: 1.05rem;
    margin-top: 2px;
    font-weight: 700;
}

.time-alert { color: var(--color-danger); font-weight: bold; }
.idle-alert { color: var(--color-warning); font-weight: bold; }

/* --- Username Input & Auth Buttons --- */
.controls-column {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.username-input-container {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 4px;
}

.username-input-container label {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}

.username-input-group {
    display: flex;
    gap: 8px;
}

.username-input-group input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-dark);
    font-size: 0.85rem;
    transition: border-color 0.2s;
}

.username-input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: rgba(255, 255, 255, 0.08);
}

.check-username-btn {
    padding: 8px 16px;
    border: 1px solid var(--color-primary);
    border-radius: 6px;
    background-color: var(--color-primary);
    color: #1a1a1a;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.check-username-btn:hover:not(:disabled) {
    background-color: #4da3ff;
    transform: translateY(-1px);
}

.check-username-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #4a4a4a;
    border-color: var(--color-border);
    color: var(--text-muted);
}

/* Auth buttons */
.control-btn {
    width: 100%;
    padding: 10px 14px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: none;
    min-height: 40px;
    transition: all 0.2s;
}

.btn-icon {
    font-size: 1.1rem;
}

.btn-text {
    flex: 1;
    text-align: left;
}

.passkey-btn,
.mobile-btn {
    background-color: var(--color-primary);
    color: white;
}

.passkey-btn:hover:not(:disabled),
.mobile-btn:hover:not(:disabled) {
    background-color: #5aa3e6;
}

.passkey-btn.logout-mode {
    background-color: var(--color-danger);
}

.passkey-btn.logout-mode:hover:not(:disabled) {
    background-color: #ff3333;
}

.control-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: #555;
    color: #888;
}

/* --- Generic Section Styles --- */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    gap: 12px;
}

.section-title {
    flex: 1;
    text-align: left;
}

.section-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

/* --- Session History --- */
.session-history-section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.report-activity {
    padding: 6px 12px;
    font-size: 0.75rem;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: background-color 0.2s;
}

.report-activity:hover:not(:disabled) {
    background-color: #4d9fff;
}

.session-history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 220px;
    overflow-y: auto;
}

.history-session-item {
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    border-left: 3px solid var(--color-primary);
    font-size: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.history-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-time {
    color: var(--text-muted);
    font-size: 0.7rem;
}

.history-status-method {
    display: flex;
    align-items: center;
    gap: 8px;
}

.history-status {
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
}

.history-status.current {
    background-color: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.history-status.active {
    background-color: rgba(34, 197, 94, 0.2);
    color: #4ade80;
}

.history-status.expired {
    background-color: rgba(156, 163, 175, 0.2);
    color: #9ca3af;
}

.history-method {
    color: var(--color-success);
    font-weight: 600;
    font-size: 0.7rem;
}

.history-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.history-location {
    font-weight: 600;
    color: var(--text-primary);
}

.history-linked {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-primary);
    font-size: 0.7rem;
    padding: 6px 10px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 6px;
    border: 1px solid rgba(102, 126, 234, 0.2);
}

.history-linked .linked-icon {
    font-size: 0.85rem;
}

.history-linked .linked-text {
    font-weight: 500;
}

.history-signal {
    color: var(--text-muted);
    font-size: 0.65rem;
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: 0;
}

.history-signal .signal-data-btn {
    display: inline-block;
    margin-left: 0;
    padding: 4px 10px;
    font-size: 0.6rem;
    vertical-align: middle;
}

.history-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: flex-end;
    min-width: 150px;
}

.history-action-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.history-action-btn.kill-btn {
    background-color: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.history-action-btn.kill-btn:hover {
    background-color: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.5);
}

.history-action-btn.report-btn {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.65rem;
}

.history-action-btn.report-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.history-action-btn.signal-data-btn {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.65rem;
}

.history-action-btn.signal-data-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Session action buttons (for sessionItemTemplate) */
.action-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.action-btn.signal-data-btn {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.65rem;
}

.action-btn.signal-data-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.action-btn.terminate-btn {
    background-color: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.action-btn.terminate-btn:hover {
    background-color: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.5);
}

.action-btn.report-btn {
    background-color: transparent;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.65rem;
}

.action-btn.report-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.no-history {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-style: italic;
    text-align: center;
    padding: 20px 10px;
}

/* --- Devices Section --- */
.devices-section {
    margin-top: 24px;
}

.devices-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.device-item {
    padding: 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    border-left: 3px solid var(--color-success);
    font-size: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.device-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.device-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.device-type-icon {
    font-size: 1.5rem;
}

.device-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
}

.device-type {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.device-id-short {
    color: var(--text-muted);
    font-size: 0.65rem;
    font-family: 'Courier New', monospace;
}

.device-current-badge {
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    background-color: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
}

.device-details {
    display: flex;
    gap: 12px;
    color: var(--text-muted);
    font-size: 0.7rem;
}

.device-signal {
    color: var(--text-muted);
    font-size: 0.65rem;
    padding-top: 6px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.device-actions {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    min-width: 120px;
}

.device-action-btn {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.device-action-btn.remove-btn {
    background-color: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
    display: inline-block;
}

.device-action-btn.remove-btn:hover {
    background-color: rgba(239, 68, 68, 0.25);
    border-color: rgba(239, 68, 68, 0.5);
}

.no-devices {
    color: var(--text-muted);
    font-size: 0.75rem;
    font-style: italic;
    text-align: center;
    padding: 20px 10px;
}

/* --- Mobile Linking Modal --- */
#mobileLinkingModal {
    position: fixed !important;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    z-index: 1001;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

#mobileLinkingModal.active {
    display: flex !important;
}

#mobileLinkingModal:not(.active) {
    display: none !important;
}

.modal-content.mobile-linking-content {
    width: 95%;
    max-width: 800px;
    background: var(--bg-dark);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

#mobileLinkingModal .modal-header {
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

#mobileLinkingModal .modal-body {
    padding: 16px;
}

/* Signal Data Modal */
#signalDataModal {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    min-height: 100%;
    z-index: 1001;
    display: none;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 0;
}

.signal-data-content {
    width: 95%;
    max-width: 900px;
    background: var(--bg-dark);
    border: 1px solid var(--color-border);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

#signalDataModal .modal-header {
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

#signalDataModal .modal-body {
    padding: 16px;
    overflow-y: visible;
}

/* Signal data link styles removed - now using button styling */

.signal-data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-top: 16px;
}

.signal-data-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 12px;
}

.signal-data-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.signal-data-value {
    color: var(--text-primary);
    font-size: 0.9rem;
    word-break: break-word;
}

.signal-data-value code {
    background: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
}

.close-countdown {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-right: 1rem;
    font-weight: 500;
}

/* QR Code display */
.qr-container {
    display: block !important;
    margin: 20px 0;
    visibility: visible !important;
}

.qr-code-container {
    display: flex !important;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
}

.qr-code {
    display: inline-block !important;
    padding: 20px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    position: relative;
}

.qr-code img {
    display: block !important;
}

.qr-code > canvas:first-child {
    display: none !important;
}

#qrcode {
    display: inline-block !important;
    line-height: 0;
    font-size: 0;
}

#qrcode img {
    display: block !important;
    margin: 0 auto;
}

#apriltag-overlay {
    display: block !important;
    position: absolute !important;
}

.qr-status,
#linkIdDisplay,
#qrUrlDisplay {
    text-align: center;
    margin: 0.5rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

#qrUrlDisplay code {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* --- Code Entry Boxes --- */
.hidden {
    display: none !important;
}

.verify-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.verify-card {
    background: var(--card-dark);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.5rem;
}

.verify-card-title {
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
    font-weight: 600;
    text-align: center;
}

.codeboxes {
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 0.5rem !important;
    justify-content: center !important;
    align-items: center !important;
    margin: 1rem 0 !important;
}

.code-input {
    width: 1.8rem !important;
    height: 1.8rem !important;
    text-align: center !important;
    font-size: 1.1rem !important;
    font-weight: 700 !important;
    border: 2px solid var(--color-border) !important;
    border-radius: 8px !important;
    background: var(--card-dark) !important;
    color: var(--text-dark) !important;
    transition: all 0.2s ease !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2) !important;
    text-transform: uppercase !important;
    font-family: 'Courier New', monospace !important;
}

.code-input:hover {
    border-color: var(--color-primary) !important;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3) !important;
}

.code-input:focus {
    border-color: var(--color-primary) !important;
    outline: none !important;
    box-shadow: 0 0 0 3px rgba(102, 179, 255, 0.2), 0 4px 8px rgba(0, 0, 0, 0.3) !important;
    transform: scale(1.05) !important;
}

.code-input:disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
}

.code-separator {
    display: inline-block;
    width: 0.7rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-muted);
    line-height: 2.25rem;
    user-select: none;
}

.verify-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.verify-actions .btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #5aa3e6;
}

.btn-secondary {
    background: #4a4a4a;
    color: var(--text-dark);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
    background: #555;
}

.verify-status {
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.verify-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

.verify-status.success {
    color: var(--color-success);
    font-weight: 600;
}

.verify-status.error {
    color: var(--color-danger);
    font-weight: 600;
}

/* --- Camera Scanning --- */
.camera-container {
    position: relative;
    width: 100%;
    max-width: 300px;
    max-height: 300px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
}

.verify-video {
    width: 100%;
    height: auto;
    max-height: 300px;
    display: block;
    object-fit: cover;
}

.privacy-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.blur-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(80px);
    mask: radial-gradient(ellipse 100px 100px at center, transparent 50px, black 100px);
    -webkit-mask: radial-gradient(ellipse 100px 100px at center, transparent 50px, black 100px);
}

.scanning-blur {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border-radius: 16px;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    background: rgba(255, 255, 255, 0.05);
}

.scanning-window {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140px;
    height: 140px;
    animation: scanning-pulse 2s ease-in-out infinite;
}

.scanning-text {
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.scanning-corners {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140px;
    height: 140px;
}

.corner {
    position: absolute;
    width: 30px;
    height: 30px;
    border: 4px solid var(--color-primary);
}

.corner.top-left {
    top: -4px;
    left: -4px;
    border-right: none;
    border-bottom: none;
    border-radius: 12px 0 0 0;
}

.corner.top-right {
    top: -4px;
    right: -4px;
    border-left: none;
    border-bottom: none;
    border-radius: 0 12px 0 0;
}

.corner.bottom-left {
    bottom: -4px;
    left: -4px;
    border-right: none;
    border-top: none;
    border-radius: 0 0 0 12px;
}

.corner.bottom-right {
    bottom: -4px;
    right: -4px;
    border-left: none;
    border-top: none;
    border-radius: 0 0 12px 0;
}

@keyframes scanning-pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(102, 179, 255, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(102, 179, 255, 0);
    }
}

/* --- Session Details Modal (nested) --- */
#sessionDetailsModal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1001;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px;
    overflow-y: auto;
}

.session-details-content {
    max-width: 600px;
    width: 90%;
    background: var(--bg-dark);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

#sessionDetailsModal .modal-header {
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

.sessions-list {
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin: 16px;
}

.session-item {
    padding: 16px;
    border-bottom: 1px solid var(--color-border);
}

.session-item:last-child {
    border-bottom: none;
}

.session-item.current-session {
    background-color: rgba(102, 179, 255, 0.1);
    border-left: 3px solid var(--color-primary);
}

/* --- Mobile Responsive --- */
@media (max-width: 767px) {
    #sessionStatusModal {
        padding: 10px;
    }
    
    .modal-content {
        width: calc(100vw - 20px);
        padding: 12px;
    }
    
    #mobileLinkingModal .modal-content {
        width: calc(100vw - 20px);
        max-height: 95vh;
    }
    
    .overview-section {
        grid-template-columns: 1fr;
    }
    
    .overview-column:not(:last-child)::after {
        display: none;
    }
    
    .overview-column:not(:last-child) {
        border-bottom: 1px solid var(--color-border);
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .section-title {
        text-align: center;
    }
    
    .section-actions {
        justify-content: center;
    }
    
    .section-actions .control-btn {
        width: 100%;
    }
    
    .code-input {
        width: 2rem !important;
        height: 2rem !important;
        font-size: 1rem !important;
    }
    
    .code-separator {
        font-size: 1.25rem;
        line-height: 2rem;
    }
    
    .camera-container {
        max-height: 350px;
    }
    
    .verify-video {
        max-height: 350px;
    }
    
    .blur-overlay {
        mask: radial-gradient(ellipse 100px 100px at center, transparent 80px, black 100px);
        -webkit-mask: radial-gradient(ellipse 100px 100px at center, transparent 80px, black 100px);
    }
}

@media (max-width: 480px) {
    .code-input {
        width: 1.75rem !important;
        height: 1.75rem !important;
        font-size: 0.9rem !important;
        border-radius: 6px !important;
    }
    
    .code-separator {
        font-size: 1rem;
        line-height: 1.75rem;
        width: 0.75rem;
    }
}