/* ============================================
   LATIVIQ MODERN SAAS DESIGN SYSTEM
   Light & Dark Mode Theme Variables
   ============================================ */

:root {
    /* ========== LIGHT MODE (Default) ========== */
    
    /* Brand Colors - Modern Blue/Cyan */
    --brand-primary: #0ea5e9;
    --brand-primary-hover: #0284c7;
    --brand-primary-light: #e0f2fe;
    --brand-secondary: #06b6d4;
    --brand-accent: #14b8a6;
    
    /* Background Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(15, 23, 42, 0.5);
    
    /* Text Colors */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Border Colors */
    --border-primary: #e2e8f0;
    --border-secondary: #cbd5e1;
    --border-focus: #2563eb;
    
    /* Status Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --error: #ef4444;
    --error-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #dbeafe;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Gradients - Modern Blue/Cyan */
    --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 50%, #3b82f6 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-info: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
    --gradient-shimmer: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ========== DARK MODE ========== */
[data-theme="dark"] {
    /* Background Colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-elevated: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.7);

    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #64748b;
    --text-inverse: #0f172a;

    /* Border Colors */
    --border-primary: #334155;
    --border-secondary: #475569;
    --border-focus: #0ea5e9;

    /* Status Colors - Adjusted for dark mode */
    --success: #34d399;
    --success-light: #064e3b;
    --warning: #fbbf24;
    --warning-light: #78350f;
    --error: #f87171;
    --error-light: #7f1d1d;
    --info: #60a5fa;
    --info-light: #1e3a8a;

    /* Shadows - More subtle in dark mode */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.75);

    /* Gradients for dark mode */
    --gradient-primary: linear-gradient(135deg, #06b6d4 0%, #0ea5e9 50%, #3b82f6 100%);
}

/* ============================================
   BASE STYLES
   ============================================ */

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   MODERN CARD COMPONENTS
   ============================================ */

.modern-card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.modern-card-header {
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-primary);
    margin-bottom: var(--spacing-lg);
}

.modern-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
}

.modern-card-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

/* ============================================
   BUTTONS - MODERN STYLE
   ============================================ */

.btn-modern {
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9375rem;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
    overflow: hidden;
}

.btn-modern:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-modern-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

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

.btn-modern-primary:active:not(:disabled) {
    transform: translateY(0);
}

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

.btn-modern-secondary:hover:not(:disabled) {
    background-color: var(--bg-secondary);
    border-color: var(--border-secondary);
}

.btn-modern-ghost {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-primary);
}

.btn-modern-ghost:hover:not(:disabled) {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* ============================================
   FORM INPUTS - MODERN STYLE
   ============================================ */

.input-modern {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
    width: 100%;
}

.input-modern:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--brand-primary-light);
}

.input-modern::placeholder {
    color: var(--text-tertiary);
}

[data-theme="dark"] .input-modern:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* ============================================
   LOADING STATES
   ============================================ */

.loading-shimmer {
    position: relative;
    overflow: hidden;
    background-color: var(--bg-tertiary);
}

.loading-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-shimmer);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.spinner-modern {
    width: 2.5rem;
    height: 2.5rem;
    border: 3px solid var(--border-primary);
    border-top-color: var(--brand-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   BADGE COMPONENTS
   ============================================ */

.badge-modern {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

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

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

.badge-error {
    background-color: var(--error-light);
    color: var(--error);
}

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

/* ============================================
   ALERT COMPONENTS
   ============================================ */

.alert-modern {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.alert-modern-success {
    background-color: var(--success-light);
    border-left-color: var(--success);
    color: var(--success);
}

.alert-modern-warning {
    background-color: var(--warning-light);
    border-left-color: var(--warning);
    color: var(--warning);
}

.alert-modern-error {
    background-color: var(--error-light);
    border-left-color: var(--error);
    color: var(--error);
}

.alert-modern-info {
    background-color: var(--info-light);
    border-left-color: var(--info);
    color: var(--info);
}

/* ============================================
   ANIMATIONS
   ============================================ */

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

.animate-fade-in {
    animation: fadeIn var(--transition-base) ease-out;
}

.animate-slide-in {
    animation: slideInRight var(--transition-base) ease-out;
}

.animate-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

@media (max-width: 768px) {
    .modern-card {
        padding: var(--spacing-lg);
    }
    
    .btn-modern {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================
   BOOTSTRAP DARK MODE OVERRIDES
   ============================================ */

/* Cards */
[data-theme="dark"] .card {
    background-color: var(--bg-elevated);
    border-color: var(--border-primary) !important;
    color: var(--text-primary);
}

[data-theme="dark"] .card-body {
    color: var(--text-primary);
}

/* text-muted */
[data-theme="dark"] .text-muted {
    color: var(--text-secondary) !important;
}

/* bg-light */
[data-theme="dark"] .bg-light {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

/* Tables */
[data-theme="dark"] .table {
    color: var(--text-primary);
    --bs-table-bg: transparent;
    --bs-table-border-color: var(--border-primary);
    --bs-table-striped-bg: var(--bg-tertiary);
    --bs-table-hover-bg: var(--bg-tertiary);
    --bs-table-color: var(--text-primary);
}

[data-theme="dark"] .table > :not(caption) > * {
    border-color: var(--border-primary);
}

[data-theme="dark"] .table > :not(caption) > * > * {
    color: var(--text-primary);
    background-color: transparent;
    border-color: var(--border-primary);
}

[data-theme="dark"] .table-bordered > :not(caption) > * {
    border-color: var(--border-primary);
}

[data-theme="dark"] .table-light,
[data-theme="dark"] .table thead.table-light {
    --bs-table-bg: var(--bg-tertiary);
    --bs-table-border-color: var(--border-primary);
    --bs-table-color: var(--text-primary);
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .table-light th,
[data-theme="dark"] .table-light td {
    background-color: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-primary) !important;
}

/* Accordion */
[data-theme="dark"] .accordion-item {
    background-color: var(--bg-elevated);
    border-color: var(--border-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .accordion-button {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

[data-theme="dark"] .accordion-button:not(.collapsed) {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    box-shadow: inset 0 -1px 0 var(--border-primary);
}

[data-theme="dark"] .accordion-button::after {
    filter: invert(1) grayscale(100%) brightness(200%);
}

[data-theme="dark"] .accordion-body {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
}

[data-theme="dark"] .accordion-collapse {
    background-color: var(--bg-elevated);
}

/* Modals */
[data-theme="dark"] .modal-content {
    background-color: var(--bg-elevated);
    border-color: var(--border-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header {
    border-bottom-color: var(--border-primary);
}

[data-theme="dark"] .modal-footer {
    border-top-color: var(--border-primary);
}

/* Close button (btn-close) */
[data-theme="dark"] .btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

/* Form helper text */
[data-theme="dark"] .form-text {
    color: var(--text-secondary) !important;
}

/* Date input calendar icon */
[data-theme="dark"] input[type="date"],
[data-theme="dark"] input[type="datetime-local"],
[data-theme="dark"] input[type="time"] {
    color-scheme: dark;
}

/* Form controls (inputs, selects, textareas) dark mode */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background-color: var(--bg-tertiary);
    border-color: var(--border-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background-color: var(--bg-tertiary);
    border-color: var(--border-focus);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

[data-theme="dark"] .form-control::placeholder {
    color: var(--text-tertiary);
}

[data-theme="dark"] .form-control:disabled,
[data-theme="dark"] .form-control[readonly],
[data-theme="dark"] .form-select:disabled {
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    border-color: var(--border-primary);
}

/* Toggle switch (form-switch) dark mode */
[data-theme="dark"] .form-check-input[type="checkbox"] {
    background-color: var(--bg-tertiary);
    border-color: var(--border-primary);
}

[data-theme="dark"] .form-check-input[type="checkbox"]:checked {
    background-color: var(--brand-primary);
    border-color: var(--brand-primary);
}

[data-theme="dark"] .form-switch .form-check-input[type="checkbox"] {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23adb5bd'/%3e%3c/svg%3e");
}

[data-theme="dark"] .form-switch .form-check-input[type="checkbox"]:checked {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%23fff'/%3e%3c/svg%3e");
}