/* ===================================
   FLAT DESIGN UI COMPONENTS
   Modern, Clean, Minimalist Design
   =================================== */

/* ===================================
   COLOR PALETTE - Flat Design
   =================================== */
:root {
    /* Primary Palette - Modern Flat Colors */
    --flat-blue: #3498db;
    --flat-blue-dark: #2980b9;
    --flat-green: #2ecc71;
    --flat-green-dark: #27ae60;
    --flat-red: #e74c3c;
    --flat-red-dark: #c0392b;
    --flat-yellow: #f39c12;
    --flat-yellow-dark: #e67e22;
    --flat-purple: #9b59b6;
    --flat-purple-dark: #8e44ad;
    
    /* Neutral Palette */
    --flat-white: #ffffff;
    --flat-clouds: #ecf0f1;
    --flat-silver: #bdc3c7;
    --flat-concrete: #95a5a6;
    --flat-asbestos: #7f8c8d;
    --flat-midnight: #2c3e50;
    --flat-wet-asphalt: #34495e;
    
    /* Shadows - Flat but with depth */
    --shadow-flat-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-flat-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-flat-lg: 0 8px 24px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    
    /* Spacing */
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
}

/* ===================================
   MODERN CARDS - Flat Design
   =================================== */
.flat-card {
    background: var(--flat-white);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-flat-md);
    margin-bottom: var(--space-md);
    transition: all var(--transition-normal);
}

.flat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-flat-lg);
}

.flat-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--flat-clouds);
}

.flat-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--flat-midnight);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.flat-card-body {
    padding: var(--space-sm) 0;
}

/* ===================================
   MODERN BUTTONS - Flat Design
   =================================== */
.flat-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-size: 15px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.flat-btn:active {
    transform: scale(0.98);
}

.flat-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Button Variants */
.flat-btn-primary {
    background: var(--flat-blue);
    color: var(--flat-white);
}

.flat-btn-primary:hover:not(:disabled) {
    background: var(--flat-blue-dark);
}

.flat-btn-success {
    background: var(--flat-green);
    color: var(--flat-white);
}

.flat-btn-success:hover:not(:disabled) {
    background: var(--flat-green-dark);
}

.flat-btn-danger {
    background: var(--flat-red);
    color: var(--flat-white);
}

.flat-btn-danger:hover:not(:disabled) {
    background: var(--flat-red-dark);
}

.flat-btn-warning {
    background: var(--flat-yellow);
    color: var(--flat-white);
}

.flat-btn-warning:hover:not(:disabled) {
    background: var(--flat-yellow-dark);
}

.flat-btn-ghost {
    background: transparent;
    color: var(--flat-midnight);
    border: 2px solid var(--flat-clouds);
}

.flat-btn-ghost:hover:not(:disabled) {
    background: var(--flat-clouds);
}

/* Button Sizes */
.flat-btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 13px;
}

.flat-btn-lg {
    padding: var(--space-md) var(--space-xl);
    font-size: 17px;
    font-weight: 700;
}

.flat-btn-block {
    width: 100%;
    display: flex;
}

/* ===================================
   MODERN FORMS - Flat Design
   =================================== */
.flat-form-group {
    margin-bottom: var(--space-lg);
}

.flat-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--flat-midnight);
    margin-bottom: var(--space-xs);
}

.flat-label-required::after {
    content: ' *';
    color: var(--flat-red);
}

.flat-input,
.flat-select,
.flat-textarea {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    font-size: 15px;
    color: var(--flat-midnight);
    background: var(--flat-white);
    border: 2px solid var(--flat-clouds);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-family: inherit;
}

.flat-input:focus,
.flat-select:focus,
.flat-textarea:focus {
    outline: none;
    border-color: var(--flat-blue);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.flat-input::placeholder,
.flat-textarea::placeholder {
    color: var(--flat-silver);
}

.flat-textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.6;
}

.flat-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.flat-input-number {
    text-align: center;
    font-weight: 600;
    font-size: 18px;
}

/* Input States */
.flat-input-error,
.flat-select-error,
.flat-textarea-error {
    border-color: var(--flat-red);
}

.flat-input-success {
    border-color: var(--flat-green);
}

.flat-help-text {
    display: block;
    margin-top: var(--space-xs);
    font-size: 12px;
    color: var(--flat-concrete);
}

.flat-help-text-error {
    color: var(--flat-red);
    font-weight: 600;
}

/* ===================================
   INFO BOXES & ALERTS - Flat Design
   =================================== */
.flat-alert {
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    border-left: 4px solid;
    margin-bottom: var(--space-md);
    font-size: 14px;
}

.flat-alert-info {
    background: #e8f4f8;
    border-left-color: var(--flat-blue);
    color: #0c5460;
}

.flat-alert-success {
    background: #d4edda;
    border-left-color: var(--flat-green);
    color: #155724;
}

.flat-alert-warning {
    background: #fff8e1;
    border-left-color: var(--flat-yellow);
    color: #856404;
}

.flat-alert-danger {
    background: #f8d7da;
    border-left-color: var(--flat-red);
    color: #721c24;
}

/* ===================================
   BADGES & TAGS - Flat Design
   =================================== */
.flat-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.flat-badge-primary {
    background: var(--flat-blue);
    color: var(--flat-white);
}

.flat-badge-success {
    background: var(--flat-green);
    color: var(--flat-white);
}

.flat-badge-danger {
    background: var(--flat-red);
    color: var(--flat-white);
}

.flat-badge-warning {
    background: var(--flat-yellow);
    color: var(--flat-midnight);
}

.flat-badge-ghost {
    background: transparent;
    border: 2px solid var(--flat-clouds);
    color: var(--flat-midnight);
}

/* ===================================
   STAT CARDS - Flat Design
   =================================== */
.flat-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.flat-stat-card {
    background: var(--flat-white);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    box-shadow: var(--shadow-flat-sm);
    transition: all var(--transition-normal);
    border-top: 4px solid;
}

.flat-stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-flat-lg);
}

.flat-stat-card-blue {
    border-top-color: var(--flat-blue);
}

.flat-stat-card-green {
    border-top-color: var(--flat-green);
}

.flat-stat-card-yellow {
    border-top-color: var(--flat-yellow);
}

.flat-stat-card-red {
    border-top-color: var(--flat-red);
}

.flat-stat-value {
    font-size: 36px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: var(--space-xs);
}

.flat-stat-label {
    font-size: 13px;
    color: var(--flat-concrete);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===================================
   LIST ITEMS - Flat Design
   =================================== */
.flat-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.flat-list-item {
    background: var(--flat-white);
    padding: var(--space-md);
    margin-bottom: var(--space-sm);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-flat-sm);
    border-left: 4px solid var(--flat-clouds);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.flat-list-item:hover {
    border-left-color: var(--flat-blue);
    box-shadow: var(--shadow-flat-md);
    transform: translateX(4px);
}

.flat-list-item-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--space-xs);
}

.flat-list-item-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--flat-midnight);
    margin: 0;
}

.flat-list-item-meta {
    font-size: 13px;
    color: var(--flat-concrete);
    margin: 4px 0;
}

.flat-list-item-actions {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
}

/* ===================================
   EMPTY STATE - Flat Design
   =================================== */
.flat-empty-state {
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    color: var(--flat-concrete);
}

.flat-empty-icon {
    font-size: 64px;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.flat-empty-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--flat-asbestos);
    margin-bottom: var(--space-sm);
}

.flat-empty-hint {
    font-size: 14px;
    color: var(--flat-silver);
}

/* ===================================
   PROGRESS & LOADING - Flat Design
   =================================== */
.flat-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--flat-clouds);
    border-top-color: var(--flat-blue);
    border-radius: 50%;
    animation: flatSpin 0.8s linear infinite;
}

@keyframes flatSpin {
    to { transform: rotate(360deg); }
}

.flat-loading-inline {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    color: var(--flat-concrete);
}

.flat-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--flat-clouds);
    border-radius: 10px;
    overflow: hidden;
}

.flat-progress-fill {
    height: 100%;
    background: var(--flat-blue);
    border-radius: 10px;
    transition: width var(--transition-normal);
}

/* ===================================
   NAVIGATION - Flat Design
   =================================== */
.flat-nav {
    display: flex;
    background: var(--flat-white);
    box-shadow: var(--shadow-flat-md);
    border-radius: var(--radius-md);
    padding: 4px;
    gap: 4px;
}

.flat-nav-item {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    background: transparent;
    color: var(--flat-concrete);
    border: none;
}

.flat-nav-item:hover {
    background: var(--flat-clouds);
    color: var(--flat-midnight);
}

.flat-nav-item.active {
    background: transparent !important;
    color: var(--flat-midnight);
}

/* ===================================
   MODALS - Flat Design
   =================================== */
.flat-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(44, 62, 80, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    animation: fadeIn var(--transition-normal);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.flat-modal {
    background: var(--flat-white);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-flat-lg);
    animation: slideUp var(--transition-normal);
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.flat-modal-header {
    padding: var(--space-lg);
    border-bottom: 2px solid var(--flat-clouds);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.flat-modal-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--flat-midnight);
    margin: 0;
}

.flat-modal-close {
    background: transparent;
    border: none;
    font-size: 28px;
    color: var(--flat-concrete);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.flat-modal-close:hover {
    background: var(--flat-clouds);
    color: var(--flat-midnight);
}

.flat-modal-body {
    padding: var(--space-lg);
}

.flat-modal-footer {
    padding: var(--space-lg);
    border-top: 2px solid var(--flat-clouds);
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* ===================================
   AVATARS - Flat Design
   =================================== */
.flat-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--flat-blue);
    color: var(--flat-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
}

.flat-avatar-lg {
    width: 64px;
    height: 64px;
    font-size: 24px;
}

.flat-avatar-sm {
    width: 32px;
    height: 32px;
    font-size: 14px;
}

/* ===================================
   DIVIDERS - Flat Design
   =================================== */
.flat-divider {
    height: 2px;
    background: var(--flat-clouds);
    margin: var(--space-lg) 0;
    border: none;
}

.flat-divider-text {
    display: flex;
    align-items: center;
    text-align: center;
    margin: var(--space-lg) 0;
    color: var(--flat-concrete);
    font-size: 13px;
    font-weight: 600;
}

.flat-divider-text::before,
.flat-divider-text::after {
    content: '';
    flex: 1;
    height: 2px;
    background: var(--flat-clouds);
}

.flat-divider-text::before {
    margin-right: var(--space-md);
}

.flat-divider-text::after {
    margin-left: var(--space-md);
}

/* ===================================
   ICONS - Flat Design
   =================================== */
.flat-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    font-size: 24px;
}

.flat-icon-primary {
    background: rgba(52, 152, 219, 0.1);
    color: var(--flat-blue);
}

.flat-icon-success {
    background: rgba(46, 204, 113, 0.1);
    color: var(--flat-green);
}

.flat-icon-danger {
    background: rgba(231, 76, 60, 0.1);
    color: var(--flat-red);
}

.flat-icon-warning {
    background: rgba(243, 156, 18, 0.1);
    color: var(--flat-yellow-dark);
}

/* ===================================
   TABLES - Flat Design
   =================================== */
.flat-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: var(--flat-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-flat-sm);
}

.flat-table th {
    background: var(--flat-midnight);
    color: var(--flat-white);
    padding: var(--space-md);
    text-align: left;
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.flat-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--flat-clouds);
    font-size: 14px;
}

.flat-table tr:last-child td {
    border-bottom: none;
}

.flat-table tr:hover {
    background: var(--flat-clouds);
}

/* ===================================
   TOOLTIPS - Flat Design
   =================================== */
.flat-tooltip {
    position: relative;
    display: inline-block;
}

.flat-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 12px;
    background: var(--flat-midnight);
    color: var(--flat-white);
    font-size: 12px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    margin-bottom: 8px;
}

.flat-tooltip:hover::after {
    opacity: 1;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.flat-text-primary { color: var(--flat-midnight); }
.flat-text-secondary { color: var(--flat-concrete); }
.flat-text-success { color: var(--flat-green); }
.flat-text-danger { color: var(--flat-red); }
.flat-text-warning { color: var(--flat-yellow-dark); }
.flat-text-info { color: var(--flat-blue); }

.flat-bg-primary { background: var(--flat-blue); }
.flat-bg-success { background: var(--flat-green); }
.flat-bg-danger { background: var(--flat-red); }
.flat-bg-warning { background: var(--flat-yellow); }
.flat-bg-light { background: var(--flat-clouds); }
.flat-bg-dark { background: var(--flat-midnight); }

.flat-rounded { border-radius: var(--radius-md); }
.flat-rounded-sm { border-radius: var(--radius-sm); }
.flat-rounded-lg { border-radius: var(--radius-lg); }
.flat-rounded-full { border-radius: 9999px; }

.flat-shadow-sm { box-shadow: var(--shadow-flat-sm); }
.flat-shadow-md { box-shadow: var(--shadow-flat-md); }
.flat-shadow-lg { box-shadow: var(--shadow-flat-lg); }
.flat-shadow-none { box-shadow: none; }

/* Spacing Utilities */
.flat-p-0 { padding: 0; }
.flat-p-sm { padding: var(--space-sm); }
.flat-p-md { padding: var(--space-md); }
.flat-p-lg { padding: var(--space-lg); }
.flat-p-xl { padding: var(--space-xl); }

.flat-m-0 { margin: 0; }
.flat-m-sm { margin: var(--space-sm); }
.flat-m-md { margin: var(--space-md); }
.flat-m-lg { margin: var(--space-lg); }
.flat-m-xl { margin: var(--space-xl); }

.flat-mb-sm { margin-bottom: var(--space-sm); }
.flat-mb-md { margin-bottom: var(--space-md); }
.flat-mb-lg { margin-bottom: var(--space-lg); }
.flat-mb-xl { margin-bottom: var(--space-xl); }

.flat-mt-sm { margin-top: var(--space-sm); }
.flat-mt-md { margin-top: var(--space-md); }
.flat-mt-lg { margin-top: var(--space-lg); }
.flat-mt-xl { margin-top: var(--space-xl); }

/* Flexbox Utilities */
.flat-flex { display: flex; }
.flat-flex-center { display: flex; align-items: center; justify-content: center; }
.flat-flex-between { display: flex; align-items: center; justify-content: space-between; }
.flat-flex-col { flex-direction: column; }
.flat-flex-gap-sm { gap: var(--space-sm); }
.flat-flex-gap-md { gap: var(--space-md); }
.flat-flex-gap-lg { gap: var(--space-lg); }

/* Grid Utilities */
.flat-grid { display: grid; }
.flat-grid-2 { grid-template-columns: repeat(2, 1fr); }
.flat-grid-3 { grid-template-columns: repeat(3, 1fr); }
.flat-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Text Utilities */
.flat-text-center { text-align: center; }
.flat-text-left { text-align: left; }
.flat-text-right { text-align: right; }

.flat-font-bold { font-weight: 700; }
.flat-font-semibold { font-weight: 600; }
.flat-font-normal { font-weight: 400; }

.flat-text-sm { font-size: 13px; }
.flat-text-md { font-size: 15px; }
.flat-text-lg { font-size: 18px; }
.flat-text-xl { font-size: 24px; }

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 480px) {
    .flat-modal {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .flat-stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .flat-btn-lg {
        font-size: 15px;
        padding: var(--space-sm) var(--space-lg);
    }
}

/* ===================================
   ANIMATIONS
   =================================== */
.flat-fade-in {
    animation: flatFadeIn var(--transition-normal);
}

@keyframes flatFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.flat-slide-up {
    animation: flatSlideUp var(--transition-normal);
}

@keyframes flatSlideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.flat-bounce {
    animation: flatBounce 0.5s;
}

@keyframes flatBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ===================================
   SPECIAL COMPONENTS
   =================================== */

/* Item Info Card */
.flat-item-info {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.05) 0%, rgba(52, 152, 219, 0.1) 100%);
    border: 2px solid var(--flat-blue);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-md);
}

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

.flat-item-info-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--flat-blue-dark);
}

.flat-item-info-stock {
    text-align: right;
}

.flat-item-info-stock-label {
    font-size: 11px;
    color: var(--flat-concrete);
    text-transform: uppercase;
}

.flat-item-info-stock-value {
    font-size: 28px;
    font-weight: 800;
    color: var(--flat-blue);
    line-height: 1;
}

/* Status Indicator */
.flat-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
}

.flat-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

.flat-status-online {
    background: rgba(46, 204, 113, 0.1);
    color: var(--flat-green-dark);
}

.flat-status-online .flat-status-dot {
    background: var(--flat-green);
}

.flat-status-offline {
    background: rgba(149, 165, 166, 0.1);
    color: var(--flat-concrete);
}

.flat-status-offline .flat-status-dot {
    background: var(--flat-concrete);
}

/* Action Buttons Group */
.flat-action-group {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.flat-action-group .flat-btn {
    flex: 1;
    min-width: 100px;
}

/* Code Block */
.flat-code {
    background: var(--flat-midnight);
    color: var(--flat-green);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 13px;
    font-weight: 600;
}

/* Highlight Box */
.flat-highlight {
    background: linear-gradient(135deg, var(--flat-yellow) 0%, var(--flat-yellow-dark) 100%);
    color: var(--flat-midnight);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    box-shadow: var(--shadow-flat-sm);
}

/* Info Panel */
.flat-info-panel {
    background: var(--flat-clouds);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    border-left: 4px solid var(--flat-blue);
}

.flat-info-panel-success {
    background: rgba(46, 204, 113, 0.1);
    border-left-color: var(--flat-green);
}

.flat-info-panel-warning {
    background: rgba(243, 156, 18, 0.1);
    border-left-color: var(--flat-yellow-dark);
}

.flat-info-panel-danger {
    background: rgba(231, 76, 60, 0.1);
    border-left-color: var(--flat-red);
}

/* ===================================
   MOBILE OPTIMIZATIONS
   =================================== */
@media (max-width: 768px) {
    .flat-card {
        padding: var(--space-md);
    }
    
    .flat-action-group {
        flex-direction: column;
    }
    
    .flat-action-group .flat-btn {
        width: 100%;
        min-width: auto;
    }
}