/* ============================================
   CHARGE OMAN - MAIN STYLESHEET
   Modern Tesla-Inspired Design
   ============================================ */

/* CSS Variables */
:root {
    /* Light Mode Colors */
    --color-primary: #FF6600;
    --color-primary-light: #FFB366;
    --color-primary-dark: #CC5200;
    
    --color-bg-primary: #FFFFFF;
    --color-bg-secondary: #F5F5F5;
    --color-bg-tertiary: #E8E8E8;
    
    --color-text-primary: #1A1A1A;
    --color-text-secondary: #666666;
    --color-text-tertiary: #999999;
    
    --color-border: #E0E0E0;
    
    --color-success: #4CAF50;
    --color-warning: #FFC107;
    --color-error: #F44336;
    --color-info: #2196F3;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Courier New', monospace;
    
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
    
    /* Z-index */
    --z-index-dropdown: 1000;
    --z-index-modal: 1050;
    --z-index-tooltip: 1100;
}

/* Dark Mode */
body.dark-mode {
    --color-bg-primary: #0F0F0F;
    --color-bg-secondary: #1A1A1A;
    --color-bg-tertiary: #2D2D2D;
    
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #CCCCCC;
    --color-text-tertiary: #999999;
    
    --color-border: #333333;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.4;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

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

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

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

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    text-decoration: none;
    font-family: var(--font-primary);
}

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

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

.btn-secondary {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    background-color: var(--color-bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

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

/* Containers & Layout */
.app-container {
    min-height: 100vh;
    background-color: var(--color-bg-primary);
}

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

.nav-hub {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
    padding: var(--spacing-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-hub__content {
    max-width: 1400px;
    width: 100%;
}

.nav-hub__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-hub__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
}

.nav-hub__controls {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.language-selector {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.language-selector:hover,
.language-selector:focus {
    border-color: var(--color-primary);
    outline: none;
}

/* Navigation Grid */
.nav-hub__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.nav-card {
    background-color: var(--color-bg-primary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    text-decoration: none;
    color: var(--color-text-primary);
    box-shadow: var(--shadow-sm);
}

.nav-card:hover {
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(255, 102, 0, 0.2);
    transform: translateY(-4px);
}

.nav-card__icon {
    font-size: var(--font-size-3xl);
}

.nav-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.nav-card__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* Pages Container */
.pages-container {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.pages-container.active {
    display: block;
}

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

.page {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
    min-height: 100vh;
    padding: var(--spacing-2xl) var(--spacing-lg);
}

.page.active {
    display: block;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2xl);
}

.page-header__back {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--color-primary);
    cursor: pointer;
    font-weight: var(--font-weight-medium);
}

.page-header__title {
    font-size: var(--font-size-3xl);
    margin: 0;
}

/* Cards */
.card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-md);
}

.card-header__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Status Badges */
.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.badge-success {
    background-color: #E8F5E9;
    color: #2E7D32;
}

.dark-mode .badge-success {
    background-color: #1B5E20;
    color: #81C784;
}

.badge-warning {
    background-color: #FFF3E0;
    color: #E65100;
}

.dark-mode .badge-warning {
    background-color: #E65100;
    color: #FFE0B2;
}

.badge-error {
    background-color: #FFEBEE;
    color: #C62828;
}

.dark-mode .badge-error {
    background-color: #B71C1C;
    color: #FFCDD2;
}

.badge-info {
    background-color: #E3F2FD;
    color: #1565C0;
}

.dark-mode .badge-info {
    background-color: #0D47A1;
    color: #BBDEFB;
}

/* Stats */
.stat {
    text-align: center;
    padding: var(--spacing-md);
}

.stat__value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Lists */
.list {
    list-style: none;
}

.list__item {
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.list__item:last-child {
    border-bottom: none;
}

.list__label {
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.list__value {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
}

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

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

.form-group__input,
.form-group__select,
.form-group__textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    transition: all var(--transition-fast);
}

.form-group__input:focus,
.form-group__select:focus,
.form-group__textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 102, 0, 0.1);
}

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

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-index-modal);
    animation: fadeIn 0.3s ease-in-out;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal__content {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease-in-out;
}

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

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-lg);
}

.modal__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

.modal__close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

.modal__body {
    margin-bottom: var(--spacing-lg);
}

.modal__footer {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* Alerts */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.alert__icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.alert__content {
    flex: 1;
}

.alert__title {
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-xs);
}

.alert__message {
    margin: 0;
    font-size: var(--font-size-sm);
}

.alert-success {
    background-color: #E8F5E9;
    color: #2E7D32;
    border: 1px solid #4CAF50;
}

.dark-mode .alert-success {
    background-color: #1B5E20;
    border-color: #81C784;
}

.alert-warning {
    background-color: #FFF3E0;
    color: #E65100;
    border: 1px solid #FFC107;
}

.dark-mode .alert-warning {
    background-color: #E65100;
    border-color: #FFE0B2;
}

.alert-error {
    background-color: #FFEBEE;
    color: #C62828;
    border: 1px solid #F44336;
}

.dark-mode .alert-error {
    background-color: #B71C1C;
    border-color: #FFCDD2;
}

.alert-info {
    background-color: #E3F2FD;
    color: #1565C0;
    border: 1px solid #2196F3;
}

.dark-mode .alert-info {
    background-color: #0D47A1;
    border-color: #BBDEFB;
}

/* Progress Bar */
.progress {
    width: 100%;
    height: 8px;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin: var(--spacing-md) 0;
}

.progress__bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    transition: width var(--transition-slow);
    border-radius: var(--radius-md);
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-bg-tertiary);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Grid Layout */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Flex Utilities */
.flex {
    display: flex;
}

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

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

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

/* Spacing Utilities */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

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

.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

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

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

.text-bold { font-weight: var(--font-weight-bold); }
.text-semibold { font-weight: var(--font-weight-semibold); }

/* Visibility */
.hidden { display: none !important; }
.visible { display: block !important; }

/* Print Styles */
@media print {
    .nav-hub,
    .btn,
    .page-header__back {
        display: none;
    }
    
    .page {
        min-height: auto;
        page-break-inside: avoid;
    }
}