/* ========================================
   CSS Variables & Root Styles
======================================== */
:root {
    /* Colors - Light Mode */
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --info-color: #4299e1;
    
    --bg-primary: #f7fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #edf2f7;
    
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --sidebar-width: 260px;
    --sidebar-collapsed-width: 80px;
    --header-height: 70px;
    --transition: all 0.3s ease;
}

/* Dark Mode */
body.dark-mode {
    --bg-primary: #1a202c;
    --bg-secondary: #2d3748;
    --bg-tertiary: #4a5568;
    
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-tertiary: #cbd5e0;
    
    --border-color: #4a5568;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

/* ========================================
   Base Styles
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
}

/* ========================================
   Sidebar Navigation
======================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    padding: 2rem 0;
    z-index: 1000;
    transition: var(--transition);
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 0 1.5rem;
    margin-bottom: 2rem;
    color: white;
    position: relative;
}

.sidebar-logo-container {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.sidebar-logo-container img {
    width: 50px;
    height: 50px;
    object-fit: contain;
    border-radius: 8px;
}

.sidebar-logo-container i {
    font-size: 2rem;
}

.sidebar-header h2 {
    font-size: 1.3rem;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    text-align: center;
    max-width: 100%;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar.collapsed .sidebar-header h2,
.sidebar.collapsed .nav-link span {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed .sidebar-header {
    justify-content: center;
}

.sidebar.collapsed .sidebar-logo-container {
    width: 50px;
    height: 50px;
}

.sidebar.collapsed .sidebar-logo-container img {
    width: 40px;
    height: 40px;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 1rem;
}

.sidebar-collapse-btn {
    position: fixed;
    top: 1.5rem;
    left: calc(var(--sidebar-width) - 20px);
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: 3px solid var(--bg-secondary);
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 1002;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.sidebar-collapse-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.sidebar-collapse-btn i {
    font-size: 1rem;
    transition: var(--transition);
}

.sidebar.collapsed ~ .sidebar-collapse-btn {
    left: calc(var(--sidebar-collapsed-width) - 20px);
}

.sidebar.collapsed ~ .sidebar-collapse-btn i {
    transform: rotate(180deg);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
}

.nav-link.active {
    background-color: rgba(255, 255, 255, 0.15);
    color: white;
    border-left-color: white;
}

.nav-link i {
    font-size: 1.2rem;
    width: 24px;
}

.sidebar-footer {
    position: absolute;
    bottom: 2rem;
    left: 0;
    right: 0;
    padding: 0 1.5rem;
}

.theme-toggle {
    width: 100%;
    padding: 0.75rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

/* ========================================
   Main Content
======================================== */
.main-content {
    margin-left: var(--sidebar-width);
    padding: 2rem;
    min-height: 100vh;
    transition: var(--transition);
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-collapsed-width);
}

.menu-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 999;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1rem;
    cursor: pointer;
    font-size: 1.2rem;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.page-header {
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ========================================
   Cards & Containers
======================================== */
.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.calculator-form-card,
.calculator-result-card,
.config-card,
.chart-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.calculator-result-card h3,
.config-card h3,
.chart-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ========================================
   Forms
======================================== */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.form-group label i {
    margin-right: 0.5rem;
    color: var(--primary-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

/* Time selector styling */
.time-selector-group {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.time-input-number {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    text-align: center;
    min-width: 60px;
}

.time-input-number:hover {
    border-color: var(--primary-color);
}

.time-input-number:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.time-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    min-width: 30px;
}

.time-select {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.time-select:hover {
    border-color: var(--primary-color);
}

.time-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Time separator styling (kept for potential future use) */
.time-separator {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

/* ========================================
   Buttons
======================================== */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
}

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

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

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

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

/* ========================================
   Result Display
======================================== */
.result-summary {
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.result-breakdown {
    margin-bottom: 1.5rem;
}

.result-breakdown h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

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

.result-item.total {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 1.1rem;
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
}

.result-item.profit {
    color: var(--warning-color);
    font-weight: 500;
}

.result-item.final {
    font-weight: 700;
    font-size: 1.3rem;
    color: var(--success-color);
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 2px solid var(--border-color);
}

.result-label {
    color: var(--text-secondary);
}

.result-value {
    font-weight: 600;
    color: var(--text-primary);
}

.result-actions {
    display: flex;
    gap: 1rem;
}

/* ========================================
   Config Page
======================================== */
.config-container {
    max-width: 800px;
}

.config-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 2rem;
}

.config-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.config-card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    padding: 0.75rem;
    background-color: var(--bg-primary);
    border-left: 3px solid var(--primary-color);
    border-radius: 4px;
}

/* ========================================
   Filaments Page
======================================== */
.filaments-container {
    max-width: 1200px;
}

.filaments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.filament-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.filament-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.filament-title {
    flex: 1;
}

.filament-title h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.filament-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

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

.filament-actions button {
    padding: 0.5rem;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: var(--transition);
    border-radius: 4px;
}

.filament-actions button:hover {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.filament-info {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

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

.filament-info-item span:first-child {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.filament-info-item span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

.filament-stock {
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stock-bar {
    flex: 1;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.stock-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--success-color), var(--primary-color));
    border-radius: 3px;
    transition: width 0.3s ease;
}

.stock-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

/* ========================================
   History Page
======================================== */
.history-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.search-input {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.history-table-container {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.history-table {
    width: 100%;
    border-collapse: collapse;
}

.history-table thead {
    background-color: var(--bg-primary);
}

.history-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.history-table td {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
}

.history-table tbody tr {
    transition: var(--transition);
}

.history-table tbody tr:hover {
    background-color: var(--bg-primary);
}

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

.history-actions button {
    padding: 0.4rem 0.8rem;
    border: none;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition);
}

.history-actions button:hover {
    background-color: var(--primary-color);
    color: white;
}

.history-actions button.delete-btn:hover {
    background-color: var(--danger-color);
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-tertiary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* ========================================
   Dashboard
======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card-compact {
    background-color: var(--bg-secondary);
    border-radius: 10px;
    padding: 1.25rem 1rem;
    box-shadow: var(--shadow-sm);
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition);
}

.stat-card-compact:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-card-compact .stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.stat-card-compact .stat-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.3;
}

.stat-card-orange {
    border-color: #ff9500;
}

.stat-card-orange .stat-value {
    color: #ff9500;
}

.stat-card-green {
    border-color: #28a745;
}

.stat-card-green .stat-value {
    color: #28a745;
}

.stat-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-content h3 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.chart-card h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.chart-card canvas {
    margin-top: 1rem;
    max-height: 280px !important;
}

/* ========================================
   Modal
======================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-tertiary);
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-content form {
    padding: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 1024px) {
    .calculator-container {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        width: 100vw;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .sidebar-nav {
        margin-top: 2rem;
    }
    
    .nav-link {
        font-size: 1.2rem;
        padding: 1.2rem 1.5rem;
    }
    
    .nav-link i {
        font-size: 1.5rem;
    }
    
    .main-content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .menu-toggle {
        display: block;
        position: fixed;
        top: 1rem;
        left: 1rem;
        z-index: 999;
        background: var(--primary-color);
        color: white;
        padding: 0.75rem;
        border-radius: 8px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }
    
    .stat-card-compact {
        padding: 0.9rem 0.6rem;
    }
    
    .stat-card-compact .stat-value {
        font-size: 1.4rem;
    }
    
    .stat-card-compact .stat-label {
        font-size: 0.7rem;
        line-height: 1.2;
    }
    
    /* Hide charts on mobile */
    .charts-grid {
        display: none;
    }
    
    /* Mobile list styles for filaments */
    .filaments-grid {
        display: block;
    }
    
    .filament-card {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem;
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 0.75rem;
    }
    
    .filament-card-content {
        flex: 1;
    }
    
    .filament-card-title {
        font-weight: 600;
        font-size: 1rem;
        margin-bottom: 0.5rem;
        display: flex;
        align-items: center;
        gap: 0.5rem;
    }
    
    .filament-card-info {
        font-size: 0.85rem;
        color: var(--text-secondary);
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .filament-card-actions {
        display: flex;
        gap: 0.5rem;
    }
    
    .filament-card-actions button {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    /* Mobile list styles for printers */
    .printers-grid {
        display: block;
    }
    
    .printer-card {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 1rem;
        background: var(--bg-secondary);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: 0.75rem;
    }
    
    .printer-card-content {
        flex: 1;
    }
    
    .printer-card-title {
        font-weight: 600;
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    
    .printer-card-info {
        font-size: 0.85rem;
        color: var(--text-secondary);
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .printer-card-actions {
        display: flex;
        gap: 0.5rem;
    }
    
    .printer-card-actions button {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .btn-icon-small {
        padding: 0.5rem;
        border: 1px solid var(--border-color);
        background: transparent;
        color: var(--text-primary);
        border-radius: 6px;
        cursor: pointer;
        transition: var(--transition);
    }
    
    .btn-icon-small:hover {
        background: var(--primary-color);
        color: white;
        border-color: var(--primary-color);
    }
    
    .history-table-container {
        overflow-x: auto;
    }
    
    .history-table {
        min-width: 800px;
    }
    
    .form-actions,
    .result-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    /* Correções adicionais de responsividade */
    h1, h2, h3 {
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .page-header h1 {
        font-size: 1.5rem;
    }
    
    .calculator-result-card {
        overflow: visible;
        max-width: 100%;
    }
    
    .result-grid {
        width: 100%;
        overflow-x: hidden;
    }
    
    .result-item {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .result-label,
    .result-value {
        font-size: 0.9rem;
        word-wrap: break-word;
        overflow-wrap: break-word;
    }
    
    .history-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-select,
    .date-input,
    .search-input {
        width: 100%;
    }
    
    .tab-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .config-tabs {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    input[type="text"],
    input[type="number"],
    select,
    textarea {
        font-size: 16px; /* Previne zoom no iOS */
        width: 100%;
    }
}

/* ========================================
   Print Styles
======================================== */
@media print {
    * {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        box-sizing: border-box;
    }
    
    @page {
        size: A4;
        margin: 1cm;
    }
    
    html, body {
        background: white;
        margin: 0;
        padding: 0;
        width: 100%;
        height: auto;
    }
    
    .sidebar,
    .sidebar-collapse-btn,
    .menu-toggle,
    .page-header,
    .no-print,
    .calculator-form-card,
    .form-actions {
        display: none !important;
    }
    
    .main-content {
        margin: 0 !important;
        padding: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }
    
    .calculator-container {
        display: block;
        width: 100%;
        max-width: 100%;
    }
    
    .calculator-result-card {
        box-shadow: none;
        border: none;
        page-break-inside: avoid;
        margin: 0;
        padding: 0.3cm;
        width: 100%;
        max-width: 100%;
        background: white;
        overflow: visible;
    }
    
    .calculator-result-card h3 {
        display: none;
    }

    .print-header {
        display: block !important;
        text-align: center;
        padding-bottom: 0.8cm;
        border-bottom: 2px solid #667eea;
        margin-bottom: 1cm;
        page-break-inside: avoid;
    }

    .print-logo-container {
        margin: 0 auto 0.5cm;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .print-logo-container img {
        max-width: 40px;
        max-height: 40px;
        object-fit: contain;
    }

    .print-logo-container i {
        font-size: 1.8rem;
        color: #667eea;
    }

    .print-header h1 {
        font-size: 16pt;
        color: #667eea;
        margin: 0.3cm 0 0.2cm;
        font-weight: 700;
        line-height: 1.2;
    }

    .print-subtitle {
        font-size: 10pt;
        color: #666;
        margin: 0;
    }

    .result-grid {
        display: block;
        margin: 0.8cm 0;
    }

    .result-item {
        display: flex;
        justify-content: space-between;
        align-items: baseline;
        padding: 0.25cm 0;
        border-bottom: none;
        page-break-inside: avoid;
        line-height: 1.4;
        word-wrap: break-word;
    }

    .result-label {
        font-weight: 700;
        color: #333;
        font-size: 10pt;
        text-transform: uppercase;
        letter-spacing: 0.3px;
        flex-shrink: 0;
        max-width: 60%;
    }

    .result-value {
        font-weight: 700;
        color: #111;
        font-size: 10pt;
        text-align: right;
        margin-left: 0.5cm;
        word-wrap: break-word;
    }
    
    .result-final-price {
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%) !important;
        padding: 0.6cm !important;
        border-radius: 6px;
        margin-top: 0.8cm;
        border: 3px solid #667eea !important;
        page-break-inside: avoid;
    }
    
    .result-final-price .result-item {
        border-bottom: none;
        padding: 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .result-final-price .result-label {
        font-size: 13pt !important;
        font-weight: 900 !important;
        color: #667eea !important;
        text-transform: uppercase;
        letter-spacing: 0.8px;
        max-width: 100%;
    }
    
    .result-final-price .result-value {
        font-size: 18pt !important;
        font-weight: 900 !important;
        color: #667eea !important;
    }

    .print-footer {
        display: block !important;
        margin-top: 0.8cm;
        padding-top: 0.3cm;
        border-top: 1px solid #ccc;
        text-align: center;
        color: #888;
        font-size: 8pt;
        page-break-inside: avoid;
    }
}
        padding-top: 1rem;
        border-top: 1px solid #ddd;
        text-align: center;
        color: #999;
        font-size: 0.8rem;
    }
    
    .result-final-price {
        background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%) !important;
        padding: 2rem !important;
        border-radius: 12px;
        margin-top: 2rem;
        border: 4px solid var(--primary-color) !important;
        box-shadow: 0 6px 16px rgba(0,0,0,0.15) !important;
    }
    
    .result-final-price .result-item {
        border-bottom: none;
        padding: 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    
    .result-final-price .result-label {
        font-size: 1.75rem !important;
        font-weight: 800 !important;
        color: var(--primary-color) !important;
        text-transform: uppercase;
        letter-spacing: 1px;
    }
    
    .result-final-price .result-value {
        font-size: 2.5rem !important;
        font-weight: 900 !important;
        color: var(--primary-color) !important;
    }
}

/* Print elements (hidden on screen) */
.print-header,
.print-footer {
    display: none;
}

@media screen {
    .print-header,
    .print-footer {
        display: none;
    }
}

/* ========================================
   Utilities
======================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ========================================
   Config Tabs
======================================== */
.config-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 1rem 1.5rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

.tab-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.tab-header h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ========================================
   Printers Grid
======================================== */
.printers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.printer-card {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.printer-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 1rem;
}

.printer-title h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.printer-model {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

.printer-actions button {
    padding: 0.5rem;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--text-tertiary);
    transition: var(--transition);
    border-radius: 4px;
}

.printer-actions button:hover {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.printer-info {
    display: grid;
    gap: 0.75rem;
}

.printer-info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem;
    background-color: var(--bg-primary);
    border-radius: 6px;
}

.printer-info-item span:first-child {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.printer-info-item span:last-child {
    font-weight: 600;
    color: var(--text-primary);
}

/* ========================================
   Customization Page
======================================== */
.customization-container {
    max-width: 800px;
}

.color-input-group {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.color-input-group input[type="color"] {
    width: 60px;
    height: 45px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.color-input-group input[type="text"] {
    flex: 1;
}

.color-preview {
    margin-top: 1.5rem;
    text-align: center;
}

.preview-gradient {
    height: 100px;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    box-shadow: var(--shadow-md);
}

.logo-preview {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--bg-primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-preview img {
    width: 80px;
    height: 80px;
    object-fit: contain;
    border-radius: 8px;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

/* ========================================
   History Section (Inside Dashboard)
======================================== */
.history-section {
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 2px solid var(--border-color);
}

.history-section h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.date-filters {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    flex-wrap: wrap;
}

.filter-select,
.date-input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: inherit;
}

.filter-select:focus,
.date-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

#customDateRange {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

#customDateRange span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ========================================
   Logo Styles
======================================== */
#appLogo {
    object-fit: contain;
}

.sidebar-header #appIcon {
    display: block;
}

.sidebar-header #appLogo[src=""]{
    display: none;
}

.sidebar-header #appLogo:not([src=""]) {
    display: block;
}

.sidebar-header #appLogo:not([src=""]) ~ #appIcon {
    display: none;
}

/* ========================================
   Responsive Updates
======================================== */
@media (max-width: 768px) {
    .config-tabs {
        overflow-x: auto;
        flex-wrap: nowrap;
    }
    
    .tab-btn {
        white-space: nowrap;
    }
    
    .printers-grid {
        grid-template-columns: 1fr;
    }
    
    .history-filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-filters {
        flex-direction: column;
    }
    
    .sidebar-collapse-btn {
        display: none;
    }
}