/* =============================================================================
   CoupleFinance - Mobile-First CSS
   ============================================================================= */

:root {
    /* Colors */
    --color-spend: #E53935;
    --color-add: #43A047;
    --color-primary: #6C63FF;
    --color-secondary: #8B85FF;
    --color-danger: #E53935;
    --color-success: #43A047;
    --color-warning: #FF9800;
    
    /* Dark Theme */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #1f2940;
    --bg-modal: #252d44;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --text-muted: #6b7280;
    
    --border-color: #2d3748;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 11px;
    --font-size-sm: 13px;
    --font-size-md: 15px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    
    /* Safe areas for mobile */
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
}

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

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* =============================================================================
   Login Screen
   ============================================================================= */

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

.login-container {
    width: 100%;
    max-width: 360px;
    text-align: center;
}

.login-logo {
    font-size: 64px;
    margin-bottom: var(--spacing-md);
}

.login-title {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.login-subtitle {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.login-form {
    background: var(--bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.login-hint {
    margin-top: var(--spacing-lg);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.error-message {
    color: var(--color-danger);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
}

/* =============================================================================
   Form Elements
   ============================================================================= */

.form-group {
    margin-bottom: var(--spacing-md);
    text-align: left;
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="file"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-md);
    font-family: inherit;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.2);
}

input[type="color"] {
    width: 48px;
    height: 48px;
    padding: 4px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

input[type="file"] {
    padding: 10px;
    font-size: var(--font-size-sm);
}

textarea {
    min-height: 80px;
    resize: vertical;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23a0a0b0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: var(--font-size-md);
    font-weight: 600;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    min-height: 48px;
}

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

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

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

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

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

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

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

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
    min-height: 36px;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-full);
    transition: background 0.2s;
}

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

.btn-fab {
    width: 48px;
    height: 48px;
    padding: 0;
    font-size: 24px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-full);
}

.toggle-group {
    display: flex;
    gap: var(--spacing-sm);
}

.toggle-btn {
    flex: 1;
    padding: 12px;
    font-size: var(--font-size-md);
    font-weight: 600;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.toggle-btn.active.spend {
    background: rgba(229, 57, 53, 0.2);
    border-color: var(--color-spend);
    color: var(--color-spend);
}

.toggle-btn.active.add {
    background: rgba(67, 160, 71, 0.2);
    border-color: var(--color-add);
    color: var(--color-add);
}

/* =============================================================================
   App Container
   ============================================================================= */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 480px;
    margin: 0 auto;
    background: var(--bg-primary);
}

/* Header */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + var(--safe-area-top));
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.header-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-avatar {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    border-radius: var(--radius-full);
}

.user-name {
    font-weight: 600;
}

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

/* Inbox */
.inbox-btn {
    position: relative;
}

.inbox-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 700;
    background: var(--color-danger);
    color: white;
    border-radius: 9px;
    padding: 0 4px;
}

.inbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    display: flex;
    justify-content: center;
    padding-top: 60px;
}

.inbox-dropdown {
    background: var(--bg-card);
    width: 100%;
    max-width: 400px;
    max-height: 70vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    margin: 0 var(--spacing-md);
    overflow: hidden;
}

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

.inbox-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.btn-text {
    background: none;
    border: none;
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    padding: 8px 12px;
    min-height: 44px;
    display: flex;
    align-items: center;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.btn-text:active {
    opacity: 0.7;
}

.inbox-list {
    flex: 1;
    overflow-y: auto;
}

.inbox-empty {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-muted);
}

.inbox-empty small {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-xs);
}

.inbox-item {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background 0.2s;
}

.inbox-item:hover {
    background: var(--bg-secondary);
}

.inbox-item.unread {
    background: rgba(108, 99, 255, 0.1);
}

.inbox-item-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: white;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

.inbox-item-content {
    flex: 1;
    min-width: 0;
}

.inbox-item-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: 2px;
}

.inbox-item-user {
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.inbox-item-icon {
    font-size: 14px;
}

.inbox-item-body {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.inbox-item-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 4px;
}

/* Main Content */
.app-main {
    flex: 1;
    overflow-y: auto;
    padding-bottom: 80px;
}

.page {
    padding: var(--spacing-md);
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.page-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

/* Bottom Navigation */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    display: flex;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding-bottom: var(--safe-area-bottom);
}

.bottom-nav button {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 10px 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: color 0.2s;
}

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

.nav-icon {
    font-size: 20px;
}

.nav-label {
    font-weight: 500;
}

/* =============================================================================
   Tabs
   ============================================================================= */

.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.tabs button {
    flex: 1;
    padding: 10px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    background: var(--bg-card);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.tabs button.active {
    background: var(--color-primary);
    color: white;
}

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

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted);
}

/* =============================================================================
   Transaction Cards
   ============================================================================= */

.feed-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.transaction-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-left: 4px solid;
}

.transaction-card.spend {
    border-left-color: var(--color-spend);
}

.transaction-card.add {
    border-left-color: var(--color-add);
}

.transaction-main {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.transaction-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: bold;
    border-radius: var(--radius-full);
}

.transaction-icon.spend {
    background: rgba(229, 57, 53, 0.2);
    color: var(--color-spend);
}

.transaction-icon.add {
    background: rgba(67, 160, 71, 0.2);
    color: var(--color-add);
}

.transaction-info {
    flex: 1;
    min-width: 0;
}

.transaction-label {
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.transaction-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.transaction-category {
    background: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 4px;
}

.transaction-amount {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.transaction-amount.spend {
    color: var(--color-spend);
}

.transaction-amount.add {
    color: var(--color-add);
}

.transaction-picture {
    margin-top: var(--spacing-sm);
}

.transaction-picture img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.transaction-actions {
    display: flex;
    gap: 4px;
    margin-left: var(--spacing-sm);
}

.btn-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s, transform 0.1s;
}

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

.btn-icon:active {
    transform: scale(0.95);
}

.btn-icon.btn-danger:hover {
    background: rgba(229, 57, 53, 0.3);
}

/* Modal Header Actions */
.modal-header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* =============================================================================
   Request Cards
   ============================================================================= */

.requests-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.request-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.request-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

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

.request-status {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}

.request-status.pending {
    background: rgba(255, 152, 0, 0.2);
    color: var(--color-warning);
}

.request-status.accepted {
    background: rgba(67, 160, 71, 0.2);
    color: var(--color-success);
}

.request-status.refused {
    background: rgba(229, 57, 53, 0.2);
    color: var(--color-danger);
}

.request-amount {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
}

.request-message {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.request-picture {
    margin-top: var(--spacing-sm);
}

.request-picture img {
    max-width: 100%;
    max-height: 120px;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.request-time {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.request-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.request-actions .btn {
    flex: 1;
}

/* =============================================================================
   Task Cards
   ============================================================================= */

.tasks-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.task-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: transform 0.2s;
}

.task-card:active {
    transform: scale(0.98);
}

.task-card.overdue {
    border-left: 4px solid var(--color-danger);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.task-assignee {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
    border-radius: var(--radius-full);
}

.task-status {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    text-transform: uppercase;
}

.task-status.pending {
    background: rgba(255, 152, 0, 0.2);
    color: var(--color-warning);
}

.task-status.accepted {
    background: rgba(108, 99, 255, 0.2);
    color: var(--color-primary);
}

.task-status.completed {
    background: rgba(67, 160, 71, 0.2);
    color: var(--color-success);
}

.task-status.refused {
    background: rgba(229, 57, 53, 0.2);
    color: var(--color-danger);
}

.task-status.overdue {
    background: rgba(229, 57, 53, 0.3);
    color: var(--color-danger);
}

.task-title {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.task-meta {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.task-due.overdue {
    color: var(--color-danger);
}

.task-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.task-actions .btn {
    flex: 1;
}

/* =============================================================================
   Stats
   ============================================================================= */

.stats-grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.stats-user {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border-top: 3px solid;
}

.stats-user-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.stats-avatar {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: white;
    border-radius: var(--radius-full);
}

.stats-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.stats-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm);
    text-align: center;
}

.stat-card.penalty {
    grid-column: span 2;
    background: rgba(229, 57, 53, 0.1);
}

.stat-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

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

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

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* =============================================================================
   Settings
   ============================================================================= */

.settings-section {
    margin-bottom: var(--spacing-xl);
}

.settings-section h3 {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* Profile Avatar */
.profile-edit {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.profile-avatar-edit {
    position: relative;
    flex-shrink: 0;
}

.profile-avatar-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-primary);
}

.profile-avatar-placeholder {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: bold;
    color: white;
}

.profile-avatar-edit .upload-label {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 2px solid var(--bg-secondary);
}

.profile-avatar-edit .upload-label:hover {
    background: var(--color-primary-dark);
}

.profile-info h3 {
    margin: 0 0 4px 0;
    font-size: var(--font-size-lg);
}

.profile-info p {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.users-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.user-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--bg-card);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

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

.user-info small {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.penalty-rules {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.penalty-rule {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    font-size: var(--font-size-sm);
}

.penalty-rule:last-child {
    border-bottom: none;
}

.penalty-rule strong {
    color: var(--color-danger);
}

.notification-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.notification-status.enabled {
    background: rgba(67, 160, 71, 0.15);
    color: var(--color-success);
}

.settings-hint {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

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

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-md);
}

.modal {
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    background: var(--bg-modal);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

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

.modal-header h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal-body {
    padding: var(--spacing-md);
    overflow-y: auto;
}

/* Task Detail Modal */
.task-detail-modal {
    max-height: 85vh;
}

.task-detail-status {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: 4px 8px;
    border-radius: 4px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.task-detail-modal h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
}

.task-detail-meta {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.task-detail-picture {
    margin-bottom: var(--spacing-md);
}

.task-detail-picture img {
    max-width: 100%;
    border-radius: var(--radius-sm);
}

/* Comments */
.comments-section {
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-md);
}

.comments-section h5 {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.comments-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: var(--spacing-md);
}

.comment {
    display: flex;
    gap: var(--spacing-sm);
}

.comment-user {
    width: 28px;
    height: 28px;
    min-width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: white;
    border-radius: var(--radius-full);
}

.comment-content {
    flex: 1;
    background: var(--bg-secondary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.comment-text {
    font-size: var(--font-size-sm);
}

.comment-time {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-top: 2px;
}

.comment-form {
    display: flex;
    gap: var(--spacing-sm);
}

.comment-form input {
    flex: 1;
}

.comment-form .btn {
    padding: 12px 16px;
}

/* =============================================================================
   Image Viewer
   ============================================================================= */

.image-viewer {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-md);
    cursor: pointer;
}

.image-viewer-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 28px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 2001;
}

.image-viewer-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

.image-viewer img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
    cursor: default;
}

/* Badge for tabs */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 11px;
    font-weight: 600;
    background: var(--color-danger);
    color: white;
    border-radius: 9px;
    margin-left: 4px;
}

/* =============================================================================
   Utilities
   ============================================================================= */

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }

/* =============================================================================
   Animations
   ============================================================================= */

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

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.modal-overlay {
    animation: fadeIn 0.2s ease-out;
}

.modal {
    animation: slideUp 0.3s ease-out;
}

/* =============================================================================
   Scrollbar
   ============================================================================= */

::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

/* =============================================================================
   Media Queries
   ============================================================================= */

@media (min-width: 481px) {
    .modal-overlay {
        align-items: center;
    }
    
    .modal {
        border-radius: var(--radius-lg);
    }
}

/* Light mode support */
@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #f5f5f5;
        --bg-secondary: #ffffff;
        --bg-card: #ffffff;
        --bg-modal: #ffffff;
        --text-primary: #1a1a1a;
        --text-secondary: #666666;
        --text-muted: #999999;
        --border-color: #e0e0e0;
    }
}

/* =============================================================================
   Toast Notifications (iOS Fallback)
   ============================================================================= */

.toast-notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    max-width: calc(100% - 32px);
    min-width: 280px;
    cursor: pointer;
    animation: toastSlideIn 0.3s ease-out;
}

.toast-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-title {
    font-weight: 600;
    font-size: var(--font-size-md);
    color: white;
    margin-bottom: 2px;
}

.toast-body {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.toast-close {
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: var(--radius-full);
    color: white;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.toast-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Toast Animation */
@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.toast-enter-active {
    animation: toastSlideIn 0.3s ease-out;
}

.toast-leave-active {
    animation: toastSlideIn 0.3s ease-in reverse;
}