/* ==========================================
   PROFIT GUARD - CSS STYLES
   Dark Mode Professional Theme
   ========================================== */

:root {
    /* Color Palette */
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f26;
    --bg-tertiary: #252c35;
    --bg-card: #1e252e;
    
    --text-primary: #e1e8ed;
    --text-secondary: #8899a6;
    --text-muted: #657786;
    
    --color-green: #10b981;
    --color-green-dark: #059669;
    --color-red: #ef4444;
    --color-red-dark: #dc2626;
    --color-blue: #3b82f6;
    --color-orange: #f59e0b;
    
    --border-color: #38444d;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    
    /* Profit Guard Alert */
    --alert-bg: #7f1d1d;
    --alert-border: #991b1b;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease;
}

/* Profit Guard Alert State */
body.profit-alert-active {
    background-color: var(--alert-bg) !important;
    animation: pulseAlert 1.5s infinite;
}

@keyframes pulseAlert {
    0%, 100% { background-color: var(--alert-bg); }
    50% { background-color: #991b1b; }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ==========================================
   HEADER & NAVIGATION
   ========================================== */

.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
}

.logo i {
    color: var(--color-green);
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.nav {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: transparent;
    border: 2px solid transparent;
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.nav-btn.active {
    background-color: var(--color-green);
    color: white;
    border-color: var(--color-green);
}

.nav-btn.logout-btn {
    background-color: transparent;
    border-color: var(--color-red);
    color: var(--color-red);
}

.nav-btn.logout-btn:hover {
    background-color: var(--color-red);
    color: white;
}

/* ==========================================
   MAIN CONTENT
   ========================================== */

.main {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

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

.section-header h2 {
    font-size: 1.75rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-header h2 i {
    color: var(--color-green);
}

/* ==========================================
   CARDS
   ========================================== */

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

/* ==========================================
   FORMS
   ========================================== */

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group label i {
    color: var(--color-green);
}

.form-group input,
.form-group textarea,
.form-group select {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

/* ==========================================
   CALCULATION PANEL
   ========================================== */

.calculation-panel {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.calculation-panel h3,
.calculation-panel h4 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.calculation-panel h3 i,
.calculation-panel h4 i {
    color: var(--color-green);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.calc-item {
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.calc-item.highlight {
    border-color: var(--color-blue);
    background-color: rgba(59, 130, 246, 0.1);
}

.calc-item.success {
    border-color: var(--color-green);
    background-color: rgba(16, 185, 129, 0.1);
}

.calc-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.calc-value {
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.calc-item.success .calc-value {
    color: var(--color-green);
}

/* ==========================================
   INSTALLMENT BREAKDOWN
   ========================================== */

.installment-breakdown {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

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

.breakdown-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

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

.breakdown-value {
    color: var(--color-green);
    font-size: 1.1rem;
    font-weight: 600;
}

/* ==========================================
   MANUAL OVERRIDE & PROFIT ALERT
   ========================================== */

.manual-override {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.override-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.profit-alert {
    background-color: var(--color-red-dark);
    border: 2px solid var(--color-red);
    border-radius: 8px;
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: shakeAlert 0.5s ease;
    margin-top: 1rem;
}

.profit-alert.hidden {
    display: none;
}

.profit-alert i {
    font-size: 1.5rem;
    color: #fff;
}

.profit-alert span {
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
}

@keyframes shakeAlert {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* ==========================================
   BUTTONS
   ========================================== */

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.btn {
    padding: 0.875rem 1.75rem;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

.btn-secondary {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-danger:hover {
    background-color: var(--color-red-dark);
}

/* ==========================================
   SEARCH & FILTERS
   ========================================== */

.search-box {
    position: relative;
    width: 300px;
}

.search-box i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-green);
}

.filters {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.filter-btn.active {
    background-color: var(--color-green);
    color: white;
    border-color: var(--color-green);
}

/* ==========================================
   INVENTORY GRID
   ========================================== */

.inventory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.inventory-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.inventory-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-green);
}

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

.inventory-title {
    flex: 1;
}

.inventory-title h3 {
    color: var(--text-primary);
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
}

.inventory-date {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.status-badge.available {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--color-green);
    border: 1px solid var(--color-green);
}

.status-badge.sold {
    background-color: rgba(239, 68, 68, 0.2);
    color: var(--color-red);
    border: 1px solid var(--color-red);
}

.inventory-specs {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.inventory-prices {
    background-color: var(--bg-tertiary);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.price-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.price-row:last-child {
    margin-bottom: 0;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
}

.price-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

.price-value.highlight {
    color: var(--color-green);
    font-size: 1.05rem;
}

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

.icon-btn {
    flex: 1;
    padding: 0.625rem;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.icon-btn.whatsapp {
    background-color: rgba(37, 211, 102, 0.1);
    border-color: #25d366;
    color: #25d366;
}

.icon-btn.whatsapp:hover {
    background-color: #25d366;
    color: white;
}

.icon-btn.edit {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--color-blue);
    color: var(--color-blue);
}

.icon-btn.edit:hover {
    background-color: var(--color-blue);
    color: white;
}

.icon-btn.delete {
    background-color: rgba(239, 68, 68, 0.1);
    border-color: var(--color-red);
    color: var(--color-red);
}

.icon-btn.delete:hover {
    background-color: var(--color-red);
    color: white;
}

/* ==========================================
   DASHBOARD STATS
   ========================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all 0.3s ease;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
}

.stat-icon.green {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--color-green);
}

.stat-icon.blue {
    background-color: rgba(59, 130, 246, 0.2);
    color: var(--color-blue);
}

.stat-icon.orange {
    background-color: rgba(245, 158, 11, 0.2);
    color: var(--color-orange);
}

.stat-content h3 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

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

/* ==========================================
   MODAL
   ========================================== */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
}

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

.close-modal {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
}

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

.modal-body {
    padding: 2rem;
}

/* ==========================================
   TOAST NOTIFICATIONS
   ========================================== */

.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-lg);
    display: none;
    align-items: center;
    gap: 0.75rem;
    z-index: 2000;
    min-width: 300px;
}

.toast.show {
    display: flex;
    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(--color-green);
}

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

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

/* ==========================================
   SETTINGS PAGE
   ========================================== */

.settings-intro {
    background-color: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--color-blue);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.settings-intro p {
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
}

.settings-intro i {
    color: var(--color-blue);
    font-size: 1.25rem;
}

.form-help {
    color: var(--text-muted);
    font-size: 0.8rem;
    display: block;
    margin-top: 0.25rem;
}

.settings-preview {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.settings-preview h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.settings-preview h3 i {
    color: var(--color-green);
}

.settings-preview > p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.preview-grid {
    display: grid;
    gap: 0.75rem;
}

.preview-item {
    background-color: var(--bg-secondary);
    padding: 0.875rem 1.25rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-item.highlight {
    border-color: var(--color-blue);
    background-color: rgba(59, 130, 246, 0.1);
}

.preview-item.success {
    border-color: var(--color-green);
    background-color: rgba(16, 185, 129, 0.1);
}

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

.preview-label span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.preview-value {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
}

.preview-item.success .preview-value {
    color: var(--color-green);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        width: 100%;
        justify-content: center;
    }

    .nav-btn span {
        display: none;
    }

    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .search-box {
        width: 100%;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .calc-grid {
        grid-template-columns: 1fr;
    }

    .inventory-grid {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */

.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state p {
    font-size: 1.1rem;
}