/* SmartClean - Main Stylesheet */

/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-blue: #2196F3;
    --primary-green: #4CAF50;
    --primary-dark: #1976D2;
    
    /* UI Colors */
    --white: #FFFFFF;
    --light-gray: #F5F5F5;
    --medium-gray: #E0E0E0;
    --dark-gray: #757575;
    --text-primary: #212121;
    --text-secondary: #757575;
    
    /* Status Colors */
    --success: #4CAF50;
    --warning: #FF9800;
    --error: #F44336;
    --info: #2196F3;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.2);
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--light-gray);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LANGUAGE SELECTOR
   ============================================ */
.language-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    background: var(--white);
    padding: 8px 16px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
}

.language-selector label {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

.language-toggle {
    display: flex;
    background: var(--light-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.language-toggle button {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.language-toggle button:hover {
    background: var(--medium-gray);
}

.language-toggle button.active {
    background: var(--primary-blue);
    color: var(--white);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 32px; }
h2 { font-size: 28px; }
h3 { font-size: 24px; }
h4 { font-size: 20px; }
h5 { font-size: 18px; }
h6 { font-size: 16px; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-success:hover:not(:disabled) {
    background: #45a049;
    transform: translateY(-2px);
}

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

.btn-warning:hover:not(:disabled) {
    background: #f57c00;
    transform: translateY(-2px);
}

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

.btn-danger:hover:not(:disabled) {
    background: #d32f2f;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--medium-gray);
    color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--dark-gray);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline:hover:not(:disabled) {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--medium-gray);
    border-radius: var(--radius-md);
    font-size: 16px;
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
}

.form-control:disabled {
    background: var(--light-gray);
    cursor: not-allowed;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: var(--spacing-md);
}

.form-check input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.form-check label {
    cursor: pointer;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: box-shadow var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--light-gray);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 2px solid var(--light-gray);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

/* ============================================
   NAVIGATION
   ============================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-around;
    padding: 12px 0;
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    cursor: pointer;
}

.nav-item:hover,
.nav-item.active {
    color: var(--primary-blue);
}

.nav-item i {
    font-size: 24px;
}

.nav-item span {
    font-size: 12px;
    font-weight: 500;
}

/* ============================================
   BADGES & STATUS
   ============================================ */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-lg);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: #E8F5E9;
    color: var(--success);
}

.badge-warning {
    background: #FFF3E0;
    color: var(--warning);
}

.badge-danger {
    background: #FFEBEE;
    color: var(--error);
}

.badge-info {
    background: #E3F2FD;
    color: var(--info);
}

/* ============================================
   MODALS
   ============================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

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

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

.modal-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

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

.modal-close:hover {
    background: var(--light-gray);
}

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

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

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--white);
    padding: 16px 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--error);
}

.toast-warning {
    border-left: 4px solid var(--warning);
}

.toast-info {
    border-left: 4px solid var(--info);
}

.toast-icon {
    font-size: 24px;
}

.toast-success .toast-icon {
    color: var(--success);
}

.toast-error .toast-icon {
    color: var(--error);
}

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

.toast-info .toast-icon {
    color: var(--info);
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 600;
    margin-bottom: 4px;
}

.toast-message {
    font-size: 14px;
    color: var(--text-secondary);
}

.toast-close {
    background: transparent;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
}

/* ============================================
   LOADING SPINNER
   ============================================ */
.spinner {
    border: 3px solid var(--light-gray);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
}

/* ============================================
   GRID SYSTEM
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(-1 * var(--spacing-sm));
}

.col {
    flex: 1;
    padding: 0 var(--spacing-sm);
}

.col-2 { flex: 0 0 16.666%; max-width: 16.666%; padding: 0 var(--spacing-sm); }
.col-3 { flex: 0 0 25%; max-width: 25%; padding: 0 var(--spacing-sm); }
.col-4 { flex: 0 0 33.333%; max-width: 33.333%; padding: 0 var(--spacing-sm); }
.col-6 { flex: 0 0 50%; max-width: 50%; padding: 0 var(--spacing-sm); }
.col-8 { flex: 0 0 66.666%; max-width: 66.666%; padding: 0 var(--spacing-sm); }
.col-12 { flex: 0 0 100%; max-width: 100%; padding: 0 var(--spacing-sm); }

/* ============================================
   UTILITIES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-blue); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--error); }
.text-muted { color: var(--text-secondary); }

.bg-primary { background-color: var(--primary-blue); }
.bg-success { background-color: var(--success); }
.bg-warning { background-color: var(--warning); }
.bg-danger { background-color: var(--error); }
.bg-light { background-color: var(--light-gray); }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }
.p-4 { padding: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }
.gap-3 { gap: var(--spacing-lg); }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .language-selector {
        top: 10px;
        right: 10px;
        padding: 6px 12px;
    }
    
    .language-toggle button {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    .col-2, .col-3, .col-4, .col-6, .col-8 {
        flex: 0 0 100%;
        max-width: 100%;
    }
    
    .btn {
        width: 100%;
    }
    
    .modal-content {
        margin: var(--spacing-sm);
    }
    
    .toast-container {
        right: 10px;
        left: 10px;
    }
    
    .toast {
        min-width: auto;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .language-selector,
    .bottom-nav,
    .btn,
    .modal,
    .toast-container {
        display: none !important;
    }
}