/* ============================================
   COM'UNIQUE - Design System
   Modern, clean, inspired by alan.com
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

/* ============================================
   CSS Variables
   ============================================ */
:root {
    /* Colors */
    --primary: #E60066;
    --primary-light: #FF1A7F;
    --primary-dark: #CC005A;
    --primary-50: rgba(230, 0, 102, 0.05);
    --primary-100: rgba(230, 0, 102, 0.1);
    --primary-200: rgba(230, 0, 102, 0.2);
    
    --white: #FFFFFF;
    --gray-50: #FAFAFA;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --black: #0A0A0A;
    
    --success: #10B981;
    --success-light: #D1FAE5;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;
    --error: #EF4444;
    --error-light: #FEE2E2;
    --info: #3B82F6;
    --info-light: #DBEAFE;
    
    /* Typography */
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.08), 0 4px 8px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.06);
    --shadow-primary: 0 4px 14px rgba(230, 0, 102, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --sidebar-width: 260px;
    --header-height: 72px;
    --content-max-width: 1400px;
}

/* ============================================
   Reset & Base
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 400;
    line-height: 1.6;
    color: var(--gray-900);
    background: var(--gray-50);
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

img {
    max-width: 100%;
    height: auto;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--gray-900);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.text-muted { color: var(--gray-500); }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* ============================================
   Layout
   ============================================ */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-slow);
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-100);
}

.sidebar-logo {
    height: 40px;
    width: auto;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.nav-section {
    margin-bottom: var(--space-6);
}

.nav-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-400);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-lg);
    color: var(--gray-600);
    font-weight: 500;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-1);
}

.nav-item:hover {
    background: var(--gray-50);
    color: var(--gray-900);
}

.nav-item.active {
    background: var(--primary-50);
    color: var(--primary);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    width: 3px;
    height: 24px;
    background: var(--primary);
    border-radius: 0 3px 3px 0;
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Main content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    height: var(--header-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-8);
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.header-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

/* Page content */
.page-content {
    flex: 1;
    padding: var(--space-8);
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
}

/* ============================================
   Components - Cards
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    transition: all var(--transition-base);
}

.card:hover {
    border-color: var(--gray-300);
    box-shadow: var(--shadow-md);
}

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--gray-100);
    background: var(--gray-50);
}

/* Stat Cards */
.stat-card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-base);
}

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

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
}

.stat-card-icon.primary {
    background: var(--primary-100);
    color: var(--primary);
}

.stat-card-icon.success {
    background: var(--success-light);
    color: var(--success);
}

.stat-card-icon.warning {
    background: var(--warning-light);
    color: var(--warning);
}

.stat-card-icon.info {
    background: var(--info-light);
    color: var(--info);
}

.stat-card-label {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-bottom: var(--space-1);
}

.stat-card-value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
}

.stat-card-value.primary {
    color: var(--primary);
}

.stat-card-sub {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
    margin-top: var(--space-2);
}

/* ============================================
   Components - Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    box-shadow: var(--shadow-primary);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-200);
}

.btn-outline {
    background: transparent;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-outline:hover:not(:disabled) {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--gray-100);
    color: var(--gray-900);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-lg);
}

.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-base);
    border-radius: var(--radius-xl);
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
}

/* ============================================
   Components - Forms
   ============================================ */
.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-base);
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-lg);
    background: var(--white);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-100);
}

.form-input::placeholder {
    color: var(--gray-400);
}

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

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%239E9E9E' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--error);
    margin-top: var(--space-1);
}

/* ============================================
   Components - Timer
   ============================================ */
.timer-widget {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-2xl);
    padding: var(--space-6);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.timer-widget::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.timer-display {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.02em;
    margin: var(--space-4) 0;
    text-align: center;
}

.timer-info {
    text-align: center;
    opacity: 0.9;
    font-size: var(--font-size-sm);
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.timer-btn {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.timer-btn-start:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.timer-btn-stop {
    background: rgba(255,255,255,0.2);
    color: var(--white);
}

.timer-btn-stop:hover {
    background: rgba(255,255,255,0.3);
}

/* Mini timer in header */
.mini-timer {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background: var(--primary-50);
    border-radius: var(--radius-full);
    animation: pulse 2s infinite;
}

.mini-timer-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: var(--radius-full);
    animation: blink 1s infinite;
}

.mini-timer-time {
    font-weight: 600;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 var(--primary-200); }
    50% { box-shadow: 0 0 0 8px transparent; }
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ============================================
   Components - Table
   ============================================ */
.table-container {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
}

.table th {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr {
    transition: background var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

/* ============================================
   Components - Badge
   ============================================ */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
}

.badge-primary {
    background: var(--primary-100);
    color: var(--primary);
}

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

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

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

.badge-gray {
    background: var(--gray-100);
    color: var(--gray-600);
}

/* ============================================
   Components - Avatar
   ============================================ */
.avatar {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--white);
    flex-shrink: 0;
}

.avatar-sm { width: 32px; height: 32px; font-size: var(--font-size-xs); }
.avatar-lg { width: 56px; height: 56px; font-size: var(--font-size-lg); }
.avatar-xl { width: 80px; height: 80px; font-size: var(--font-size-2xl); }

/* ============================================
   Components - Modal
   ============================================ */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    background: var(--white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    z-index: 1001;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, -50%) scale(1);
}

.modal-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--gray-500);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

.modal-body {
    padding: var(--space-6);
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
}

/* ============================================
   Components - Progress
   ============================================ */
.progress {
    height: 8px;
    background: var(--gray-100);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-slower);
}

/* ============================================
   Components - Kanban
   ============================================ */
.kanban-board {
    display: flex;
    gap: var(--space-6);
    overflow-x: auto;
    padding-bottom: var(--space-4);
}

.kanban-column {
    flex: 0 0 300px;
    background: var(--gray-100);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
}

.kanban-column-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
    padding: 0 var(--space-2);
}

.kanban-column-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray-600);
}

.kanban-column-count {
    background: var(--white);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--gray-500);
}

.kanban-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-3);
    cursor: grab;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.kanban-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--gray-200);
}

.kanban-card:active {
    cursor: grabbing;
}

.kanban-card.dragging {
    opacity: 0.5;
    transform: rotate(3deg);
}

/* ============================================
   Components - Toast
   ============================================ */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    animation: slideIn var(--transition-slow) ease;
}

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   Utilities
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.p-4 { padding: var(--space-4); }
.p-6 { padding: var(--space-6); }

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

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

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   Animations
   ============================================ */
.fade-in {
    animation: fadeIn var(--transition-slow) ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp var(--transition-slow) ease;
}

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

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .page-content {
        padding: var(--space-4);
    }
    
    .header {
        padding: 0 var(--space-4);
    }
    
    .kanban-board {
        flex-direction: column;
    }
    
    .kanban-column {
        flex: none;
        width: 100%;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .sidebar,
    .header,
    .btn,
    .modal-backdrop {
        display: none !important;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .page-content {
        padding: 0;
    }
}