/* Modern ESP Launchpad Styles */
:root {
    --primary-color: #e63946;
    --primary-dark: #d62828;
    --secondary-color: #457b9d;
    --success-color: #2a9d8f;
    --warning-color: #f77f00;
    --danger-color: #e63946;
    --info-color: #219ebc;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --background-color: #f5f7fa;
    --card-background: #ffffff;
    --border-color: #e9ecef;
    --text-color: #2c3e50;
    --text-muted: #6c757d;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
}

body.modern-body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* Header Styles */
.modern-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.75rem 0;
}

.header-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin: 0;
}

.header-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0;
}

/* Connection Status */
.connection-status {
    display: flex;
    align-items: center;
}

.device-status-panel {
    display: flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    backdrop-filter: blur(10px);
}

.status-indicator {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
}

.status-dot {
    font-size: 0.5rem;
    margin-right: 0.5rem;
    color: #dc3545; /* Default red for disconnected */
    filter: drop-shadow(0 0 2px currentColor);
}

.status-dot.connected {
    color: #28a745;
    animation: pulse 2s infinite;
}

.status-dot.connecting {
    color: #ffc107;
    animation: spin 1s linear infinite;
}

.device-info-mini {
    display: flex;
    align-items: center;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
}

.device-info-mini small {
    background: rgba(255, 255, 255, 0.15);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    white-space: nowrap;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Main Content */
.main-content {
    padding: 1rem 0;
    min-height: calc(100vh - 70px);
}

/* Modern Alert */
.modern-alert {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    position: relative;
    display: flex;
    align-items: center;
}

.modern-alert .btn-close {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.375rem;
    margin: 0;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.modern-alert .btn-close:hover {
    opacity: 1;
}

/* Modern Cards */
.modern-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.modern-card:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* Card Height Adjustments for Visual Alignment */
.modern-card:first-child {
    /* 固件选择卡片 - 主卡片，保持内容驱动高度 */
    min-height: 300px;
}

.modern-card:nth-child(2) {
    /* 烧录设置卡片 - 设置较小的最小高度 */
    min-height: 120px;
}

.modern-card .card-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 1px solid var(--border-color);
    padding: 0.875rem 1rem;
    font-weight: 600;
}

.modern-card .card-title {
    margin: 0;
    font-size: 1rem;
    color: var(--text-color);
    display: flex;
    align-items: center;
}

.modern-card .card-title i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.modern-card .card-body {
    padding: 1rem;
}

/* Device Info */
.device-info {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--light-color);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.info-item label {
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.device-status {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    background: var(--text-muted);
    color: white;
}

.device-status.connected {
    background: var(--success-color);
}

.device-status.connecting {
    background: var(--warning-color);
}

.device-status.error {
    background: var(--danger-color);
}

/* Firmware Mode Toggle */
.btn-group .btn-check:checked + .btn {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* Chip Selection */
.chip-selection {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-check-inline {
    margin-right: 0;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* File Upload Area */
.file-upload-area {
    position: relative;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
    background: var(--light-color);
}

.file-upload-area:hover,
.file-upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(230, 57, 70, 0.1);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.upload-text {
    margin: 0 0 0.5rem 0;
    font-weight: 500;
    color: var(--text-color);
}

/* Firmware Files List */
.firmware-files {
    margin-top: 1rem;
    min-height: 100px;
}

.firmware-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem;
    background: var(--light-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.5rem;
    transition: var(--transition);
}

.firmware-file-item:hover {
    background: rgba(230, 57, 70, 0.05);
    border-color: var(--primary-color);
}

.file-info {
    display: flex;
    align-items: center;
    flex-grow: 1;
}

.file-icon {
    color: var(--primary-color);
    margin-right: 0.75rem;
    font-size: 1.25rem;
}

.file-details h6 {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-color);
    font-weight: 600;
}

.file-details small {
    color: var(--text-muted);
    display: block;
    margin-top: 0.25rem;
}

.address-input {
    width: 120px;
    margin: 0 1rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.875rem;
    text-align: center;
    font-weight: 600;
}

.address-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(230, 57, 70, 0.25);
}

.file-actions {
    display: flex;
    gap: 0.5rem;
}

.file-size-info {
    color: var(--text-muted);
    font-size: 0.75rem;
    background: rgba(0, 0, 0, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    margin-left: 0.5rem;
}

/* Flash Address Input Enhancement */
.address-group {
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 0.25rem;
}

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

.address-input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.address-prefix {
    position: absolute;
    left: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    pointer-events: none;
}

.address-input.has-prefix {
    padding-left: 1.5rem;
}

/* Quick Add Buttons */
.quick-add-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.quick-add-buttons .btn {
    border-radius: 20px;
    font-size: 0.8rem;
}

/* Flash Options Panel */
.flash-options {
    background: rgba(230, 57, 70, 0.05);
    border: 1px solid rgba(230, 57, 70, 0.2);
    border-radius: var(--border-radius-sm);
    padding: 1rem;
}

.flash-options h6 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

/* File Validation States */
.firmware-file-item.valid {
    border-color: var(--success-color);
    background: rgba(42, 157, 143, 0.05);
}

.firmware-file-item.invalid {
    border-color: var(--danger-color);
    background: rgba(230, 57, 70, 0.05);
}

.file-validation-icon {
    margin-left: 0.5rem;
    font-size: 0.875rem;
}

.file-validation-icon.valid {
    color: var(--success-color);
}

.file-validation-icon.invalid {
    color: var(--danger-color);
}

/* Empty State */
.empty-files-state {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
}

.empty-files-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--border-color);
}

/* File Upload Enhancements */
.file-upload-area.has-files {
    border-style: solid;
    border-color: var(--success-color);
    background: rgba(42, 157, 143, 0.05);
}

.upload-stats {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Address Preset Buttons */
.address-presets {
    display: flex;
    gap: 0.25rem;
    margin-top: 0.5rem;
}

.address-preset-btn {
    padding: 0.125rem 0.5rem;
    font-size: 0.75rem;
    border-radius: 12px;
    background: var(--light-color);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.address-preset-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Flash Button */
.flash-button {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.flash-button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.flash-button:disabled {
    background: var(--text-muted);
    color: white;
    cursor: not-allowed;
}

.flash-button.flafhing {
    background: var(--warning-color);
    animation: pulse-flash 1.5s infinite;
}

@keyframes pulse-flash {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Progress Card */
#progressCard {
    min-height: 100px;
}

.progress-info {
    margin-bottom: 1rem;
}

.progress-label {
    font-weight: 600;
    color: var(--text-color);
}

.progress-percentage {
    font-weight: 700;
    color: var(--primary-color);
}

.progress {
    height: 12px;
    border-radius: 6px;
    background-color: var(--light-color);
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    border-radius: 6px;
    transition: width 0.3s ease;
}

.progress-details {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Console */
.console-card {
    height: 500px;
    display: flex;
    flex-direction: column;
}

.console-card .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.console-container {
    flex: 1;
    background: #1e1e1e;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    overflow: hidden;
    position: relative;
}

.console-container.compact {
    display: flex;
    flex-direction: column;
    flex: 1 1 0%;
    height: 100%;
    min-height: 200px;
    max-height: none;
}

.console-output {
    flex: 1 1 0%;
    min-height: 0;
    max-height: 100%;
    padding: 0.75rem;
    overflow-y: auto;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.8rem;
    line-height: 1.3;
    color: #f8f8f2;
    background: #1e1e1e;
    scrollbar-color: #888 #222;
    scrollbar-width: thin;
}

.console-line {
    margin-bottom: 0.25rem;
    word-wrap: break-word;
}

.console-timestamp {
    color: #6272a4;
    margin-right: 0.5rem;
}

.console-text {
    color: #f8f8f2;
}

.console-text.info {
    color: #8be9fd;
}

.console-text.success {
    color: #50fa7b;
}

.console-text.warning {
    color: #ffb86c;
}

.console-text.error {
    color: #ff5555;
}

.console-text.debug {
    color: #bd93f9;
}

/* Console Scrollbar */
.console-output::-webkit-scrollbar {
    width: 8px;
}

.console-output::-webkit-scrollbar-track {
    background: #282a36;
}

.console-output::-webkit-scrollbar-thumb {
    background: #44475a;
    border-radius: 4px;
}

.console-output::-webkit-scrollbar-thumb:hover {
    background: #6272a4;
}

/* Console Controls */
.console-controls {
    display: flex;
    gap: 0.5rem;
}

/* Form Elements */
.form-select,
.form-control {
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.form-select:focus,
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(230, 57, 70, 0.25);
}

/* Buttons */
.btn {
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

/* QR Code Card */
.qr-codes-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.qr-code-item {
    text-align: center;
}

.qr-code-item h6 {
    margin-top: 0.5rem;
    color: var(--text-color);
}

/* Modals */
.modal-content {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background: var(--light-color);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background: var(--light-color);
}

/* App Description */
.app-description {
    padding: 1rem;
    background: var(--light-color);
    border-radius: var(--border-radius-sm);
    border-left: 4px solid var(--primary-color);
    margin-top: 1rem;
}

.app-description h6 {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .modern-header {
        padding: 0.75rem 0;
    }
    
    .header-title {
        font-size: 1.5rem;
    }
    
    .connection-status {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .main-content {
        padding: 1rem 0;
    }
    
    .modern-card .card-body {
        padding: 1rem;
    }
    
    .chip-selection {
        flex-direction: column;
        gap: 0.5rem;
    }
}

@media (max-width: 576px) {
    .file-upload-area {
        padding: 1.5rem 1rem;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
    
    .firmware-file-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .address-input {
        width: 100%;
        margin: 0;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-color);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-color);
}

/* Focus States */
.btn:focus,
.form-control:focus,
.form-select:focus {
    outline: none;
    box-shadow: 0 0 0 0.2rem rgba(230, 57, 70, 0.25);
}

/* Utility Classes */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

.shadow-sm {
    box-shadow: var(--shadow-sm) !important;
}

.shadow {
    box-shadow: var(--shadow) !important;
}

.shadow-lg {
    box-shadow: var(--shadow-lg) !important;
}

/* Compact Layout Adjustments */
.row {
    margin-bottom: 1rem;
}

.col-md-6 .modern-card:last-child,
.col-md-12 .modern-card:last-child {
    margin-bottom: 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .main-content {
        padding: 0.75rem 0;
    }
    
    .modern-card .card-body {
        padding: 0.75rem;
    }
    
    .console-card {
        height: 450px;
    }
}

/* Extra compact for small screens */
@media (max-height: 768px) {
    .header {
        padding: 0.5rem 0;
    }
    
    .console-card {
        height: 450px;
    }
    
    .modern-card {
        margin-bottom: 0.75rem;
    }
}

/* Simple DIY Mode Styles */
#flashAddressSection .input-group {
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-sm);
}

#flashAddressSection .input-group-text {
    background: var(--light-color);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-weight: 500;
}

#flashAddressInput {
    border: 1px solid var(--border-color);
    padding: 0.625rem 0.75rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

#flashAddressInput:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(230, 57, 70, 0.25);
}

#fileInfoSection .card {
    border: 2px dashed var(--border-color);
    background: var(--light-color);
    transition: var(--transition);
    cursor: pointer;
}

#fileInfoSection .card:hover {
    border-color: var(--primary-color);
    background: rgba(230, 57, 70, 0.05);
    transform: translateY(-1px);
}

#fileInfoSection .card .card-body {
    position: relative;
}

#fileInfoSection .card .card-body::after {
    content: "点击重新选择文件";
    position: absolute;
    top: 50%;
    right: 3rem;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0;
    transition: var(--transition);
}

#fileInfoSection .card:hover .card-body::after {
    opacity: 1;
}

#removeFileBtn {
    border-radius: 50%;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

#flashAddressSection .input-group-text .dropdown {
    position: relative;
}

.dropdown-menu {
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    z-index: 1050;
}

/* Compact Layout Styles */
.modern-card.compact {
    margin-bottom: 0.75rem;
}

.modern-card.compact .card-header {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.modern-card.compact .card-body {
    padding: 0.75rem 1rem;
}

.form-label-sm {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.file-upload-area.compact {
    min-height: 80px;
    padding: 0.75rem;
    position: relative;
}

.file-upload-area.compact .upload-content {
    pointer-events: auto;
    cursor: pointer;
}

.file-upload-area.compact:has(+ #fileInfoSection[style*="block"]) {
    border-style: solid;
    border-color: var(--success-color);
    background: rgba(42, 157, 143, 0.05);
}

.file-upload-area.compact:has(+ #fileInfoSection[style*="block"]) .upload-content {
    opacity: 0.7;
    cursor: default;
}

.upload-icon-sm {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.25rem;
}

.upload-text-sm {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-color);
}

.console-container.compact {
    height: auto;
    min-height: 300px;
    max-height: none;
}

.console-card.compact {
    height: auto;
    min-height: 350px;
    max-height: 500px;
    display: flex;
    flex-direction: column;
}

.console-card.compact .card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

.flash-button {
    padding: 0.625rem 1.25rem;
    font-size: 1rem;
    font-weight: 600;
}

/* Compact alert */
.compact-alert {
    padding: 0.5rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    position: relative;
    display: flex;
    align-items: center;
}

.compact-alert .btn-close {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    padding: 0.25rem;
    margin: 0;
}

/* Responsive adjustments for compact layout */
@media (max-width: 768px) {
    .modern-card.compact {
        margin-bottom: 0.5rem;
    }
    
    .console-container.compact {
        height: auto;
        min-height: 250px;
        max-height: 400px;
    }
    
    .console-card.compact {
        min-height: 300px;
        max-height: 400px;
    }
    
    .flash-button {
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
    }
}