/**
 * MRM Design System
 * Based on Figma Design System
 * Source Sans 3 + Roboto Mono
 */

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
    /* Colors - Primary */
    --color-primary: #1d7afc;
    --color-primary-hover: #0066e6;
    --color-primary-active: #0052cc;
    
    /* Colors - Semantic */
    --color-success: #22c55e;
    --color-success-hover: #16a34a;
    --color-warning: #f59e0b;
    --color-warning-hover: #d97706;
    --color-error: #ef4444;
    --color-error-hover: #dc2626;
    
    /* Colors - Neutral */
    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #e5e5e5;
    --color-neutral-300: #d9d9d9;
    --color-neutral-400: #bfbfbf;
    --color-neutral-500: #8c8c8c;
    --color-neutral-600: #595959;
    --color-neutral-700: #434343;
    --color-neutral-800: #262626;
    --color-neutral-900: #141414;
    
    /* Text Colors */
    --text-primary: #262626;
    --text-secondary: #595959;
    --text-subtler: #8c8c8c;
    --text-subtlest: #bfbfbf;
    --text-inverse: #ffffff;
    --text-accent: #1d7afc;
    
    /* Background Colors */
    --bg-surface: #ffffff;
    --bg-page: #f5f5f5;
    --bg-elevated: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.5);
    
    /* Border Colors */
    --border-default: #d9d9d9;
    --border-hover: #bfbfbf;
    --border-focus: #1d7afc;
    --border-error: #ef4444;
    
    /* Spacing */
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
    --spacing-8: 32px;
    --spacing-10: 40px;
    --spacing-12: 48px;
    
    /* Border Radius */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
}

/* ============================================
   Typography
   ============================================ */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@300;400;500;600;700&family=Roboto+Mono:wght@400;700&display=swap');

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

body {
    font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 14px;
    font-weight: 400;
    line-height: 20px;
    color: var(--text-primary);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings */
.h1, h1 {
    font-size: 28px;
    font-weight: 500;
    line-height: 40px;
    color: var(--text-primary);
}

.h2, h2 {
    font-size: 22px;
    font-weight: 500;
    line-height: 32px;
    color: var(--text-primary);
}

.h3, h3 {
    font-size: 16px;
    font-weight: 500;
    line-height: 24px;
    color: var(--text-primary);
}

/* Body text */
.text-lg {
    font-size: 16px;
    line-height: 24px;
}

.text-md {
    font-size: 14px;
    line-height: 20px;
}

.text-sm {
    font-size: 12px;
    line-height: 18px;
}

.text-semibold {
    font-weight: 600;
}

.text-mono {
    font-family: 'Roboto Mono', monospace;
}

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

.text-subtler {
    color: var(--text-subtler);
}

/* ============================================
   Buttons
   ============================================ */

/* Base button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    font-family: inherit;
    font-size: 14px;
    font-weight: 400;
    line-height: 20px;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

/* Button sizes */
.btn-lg {
    height: 40px;
    padding: 0 var(--spacing-4);
}

.btn-sm {
    height: 32px;
    padding: 0 var(--spacing-3);
    font-size: 12px;
}

/* Primary button */
.btn-primary {
    background: var(--color-primary);
    color: var(--text-inverse);
}

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

.btn-primary:active:not(:disabled) {
    background: var(--color-primary-active);
}

/* Secondary button */
.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-neutral-100);
    border-color: var(--border-hover);
}

/* Transparent button */
.btn-transparent {
    background: transparent;
    color: var(--text-primary);
}

.btn-transparent:hover:not(:disabled) {
    background: var(--color-neutral-100);
}

/* Error/Danger button */
.btn-error, .btn-danger {
    background: var(--color-error);
    color: var(--text-inverse);
}

.btn-error:hover:not(:disabled),
.btn-danger:hover:not(:disabled) {
    background: var(--color-error-hover);
}

/* Success button */
.btn-success {
    background: var(--color-success);
    color: var(--text-inverse);
}

.btn-success:hover:not(:disabled) {
    background: var(--color-success-hover);
}

/* Button with icon */
.btn svg,
.btn img {
    width: 20px;
    height: 20px;
}

/* ============================================
   Inputs
   ============================================ */

/* Input wrapper */
.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

/* Label */
.input-label {
    font-size: 14px;
    font-weight: 400;
    line-height: 20px;
    color: var(--text-primary);
}

/* Description */
.input-description {
    font-size: 12px;
    line-height: 18px;
    color: var(--text-secondary);
}

.input-description.error {
    color: var(--color-error);
}

/* Base input */
.input {
    width: 100%;
    height: 40px;
    padding: 10px 12px;
    font-family: inherit;
    font-size: 14px;
    line-height: 20px;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.input:hover:not(:disabled):not(:focus) {
    border-color: var(--border-hover);
}

.input:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 2px rgba(29, 122, 252, 0.2);
}

.input:disabled {
    background: var(--color-neutral-100);
    color: var(--text-subtler);
    cursor: not-allowed;
}

.input.error {
    border-color: var(--border-error);
}

.input.error:focus {
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

/* Small input */
.input-sm {
    height: 32px;
    padding: 6px 12px;
    font-size: 12px;
}

/* Textarea */
textarea.input {
    height: auto;
    min-height: 100px;
    resize: vertical;
}

/* Select */
.select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 7.5L10 12.5L15 7.5' stroke='%23595959' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* ============================================
   Cards & Containers
   ============================================ */

.card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-5);
    border-bottom: 1px solid var(--color-neutral-200);
}

.card-body {
    padding: var(--spacing-5);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--color-neutral-200);
}

/* ============================================
   Tags / Badges
   ============================================ */

.tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    height: 18px;
    padding: 0 var(--spacing-2);
    font-size: 12px;
    font-weight: 400;
    line-height: 18px;
    border-radius: var(--radius-xs);
}

/* Tag colors */
.tag-neutral {
    background: var(--color-neutral-100);
    color: var(--text-secondary);
}

.tag-blue {
    background: rgba(29, 122, 252, 0.1);
    color: #1d7afc;
}

.tag-green {
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
}

.tag-red {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

.tag-yellow {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.tag-orange {
    background: rgba(249, 115, 22, 0.1);
    color: #ea580c;
}

.tag-purple {
    background: rgba(139, 92, 246, 0.1);
    color: #7c3aed;
}

.tag-cyan {
    background: rgba(6, 182, 212, 0.1);
    color: #0891b2;
}

/* Badge (pill style) */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    height: 20px;
    padding: 0 var(--spacing-2);
    font-size: 12px;
    font-weight: 600;
    line-height: 1;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: var(--text-inverse);
}

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

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

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

.badge-neutral {
    background: var(--color-neutral-400);
}

/* ============================================
   Tables
   ============================================ */

.table-container {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-5);
    border-bottom: 1px solid var(--color-neutral-200);
}

.table-header h3 {
    margin: 0;
}

.table-actions {
    display: flex;
    gap: var(--spacing-2);
}

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

thead {
    background: var(--color-neutral-50);
}

th {
    padding: var(--spacing-3) var(--spacing-4);
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    line-height: 18px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: 14px;
    line-height: 20px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--color-neutral-200);
}

tr:last-child td {
    border-bottom: none;
}

tbody tr:hover {
    background: var(--color-neutral-50);
}

/* ============================================
   Modal / Dialog
   ============================================ */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 480px;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.modal-lg {
    max-width: 640px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-5);
    border-bottom: 1px solid var(--color-neutral-200);
}

.modal-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 500;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-neutral-100);
    color: var(--text-primary);
}

.modal-body {
    padding: var(--spacing-5);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-2);
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--color-neutral-200);
}

/* ============================================
   Navigation
   ============================================ */

.nav-tabs {
    display: flex;
    gap: var(--spacing-1);
    border-bottom: 1px solid var(--color-neutral-200);
}

.nav-tab {
    position: relative;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: 14px;
    font-weight: 400;
    line-height: 20px;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

.nav-tab.active {
    color: var(--color-primary);
}

.nav-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

/* Tab Content */
.tab-content {
    display: none;
}

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

/* ============================================
   Layout
   ============================================ */

.dashboard {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-5);
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-5);
    box-shadow: var(--shadow-sm);
}

.dashboard-header h1 {
    font-size: 22px;
}

/* ============================================
   Toggle Switch
   ============================================ */

.toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--color-neutral-300);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    height: 20px;
    width: 20px;
    left: 2px;
    bottom: 2px;
    background: var(--bg-surface);
    border-radius: 50%;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.toggle input:checked + .toggle-slider {
    background: var(--color-primary);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

.toggle input:disabled + .toggle-slider {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast {
    position: fixed;
    bottom: var(--spacing-6);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: var(--spacing-3) var(--spacing-5);
    background: var(--color-neutral-800);
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    opacity: 0;
    animation: toastIn 0.3s ease forwards;
}

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

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

@keyframes toastIn {
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    to {
        opacity: 0;
        transform: translateX(-50%) translateY(20px);
    }
}

/* ============================================
   Empty State
   ============================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12) var(--spacing-5);
    text-align: center;
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-4);
    color: var(--text-subtlest);
}

.empty-state h3 {
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* ============================================
   Loading States
   ============================================ */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-10);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-neutral-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Top Navigation Bar
   ============================================ */

.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-5);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--color-neutral-200);
    box-shadow: var(--shadow-sm);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.navbar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: 14px;
    font-weight: 400;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.navbar-link:hover {
    color: var(--text-primary);
    background: var(--color-neutral-100);
}

.navbar-link.active {
    color: var(--color-primary);
    background: rgba(29, 122, 252, 0.1);
}

.navbar-link .icon {
    font-size: 16px;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* Page content with navbar */
.page-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-5);
}

.page-header {
    margin-bottom: var(--spacing-5);
}

.page-header h1 {
    font-size: 22px;
    font-weight: 500;
}

/* ============================================
   Utility Classes
   ============================================ */

.flex {
    display: flex;
}

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

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

.justify-between {
    justify-content: space-between;
}

.gap-1 { gap: var(--spacing-1); }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-5 { gap: var(--spacing-5); }

.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }

.w-full { width: 100%; }

.hidden { display: none; }