/* ============================================
   Abo-Übersicht Manager - Styles
   Mobile-First, Dark Mode Default
   ============================================ */

/* CSS Variables - Design System */
:root {
    /* Colors - Light Mode */
    --bg-primary: hsl(209, 40%, 96%);
    --bg-secondary: hsl(210, 40%, 98%);
    --bg-card: hsl(210, 40%, 98%);
    --bg-elevated: hsl(214, 31%, 91%);
    
    --text-primary: hsl(222, 47%, 11%);
    --text-secondary: hsl(215, 16%, 46%);
    --text-muted: hsl(215, 20%, 65%);
    
    --accent-primary: hsl(216, 19%, 26%);
    --accent-secondary: hsl(215, 19%, 34%);
    --accent-success: hsl(142, 71%, 45%);
    --accent-warning: hsl(38, 92%, 50%);
    --accent-danger: hsl(0, 72%, 50%);
    
    --border-color: hsl(212, 26%, 83%);
    --border-light: hsl(212, 26%, 90%);
    
    /* Shadows */
    --shadow-sm: 0 1px 3px 0 hsl(0, 0%, 0%, 0.05);
    --shadow-md: 0 4px 6px -1px hsl(0, 0%, 0%, 0.1);
    --shadow-lg: 0 10px 15px -3px hsl(0, 0%, 0%, 0.1);
    
    /* Typography */
    --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    
    /* Layout */
    --bottom-nav-height: 4.5rem;
    --header-height: 3.5rem;
    --safe-area-bottom: env(safe-area-inset-bottom, 0);
}

/* Dark Mode (Default) */
.dark {
    --bg-primary: hsl(222, 47%, 11%);
    --bg-secondary: hsl(217, 32%, 14%);
    --bg-card: hsl(217, 32%, 17%);
    --bg-elevated: hsl(215, 24%, 22%);
    
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 65%);
    --text-muted: hsl(215, 16%, 46%);
    
    --accent-primary: hsl(212, 26%, 83%);
    --accent-secondary: hsl(215, 19%, 50%);
    
    --border-color: hsl(215, 19%, 28%);
    --border-light: hsl(215, 19%, 22%);
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

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

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    height: var(--header-height);
}

.app-header h1 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

/* ============================================
   Icons & Buttons
   ============================================ */
.icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

.icon-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border: none;
    background: transparent;
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

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

/* Theme Toggle */
#theme-toggle .sun { display: none; }
#theme-toggle .moon { display: block; }
.dark #theme-toggle .sun { display: block; }
.dark #theme-toggle .moon { display: none; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: 2.75rem;
    -webkit-tap-highlight-color: transparent;
}

.btn:active {
    transform: scale(0.98);
}

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

.dark .btn-primary {
    background-color: var(--accent-primary);
    color: hsl(222, 47%, 11%);
}

.btn-primary:hover {
    opacity: 0.9;
}

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

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

.btn-danger {
    background-color: var(--accent-danger);
    color: hsl(0, 0%, 100%);
}

.btn-full {
    width: 100%;
}

/* ============================================
   Main Content
   ============================================ */
main {
    flex: 1;
    padding: var(--spacing-md);
    padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + var(--spacing-md));
    overflow-y: auto;
}

.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn 0.2s ease;
}

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

/* ============================================
   Cost Summary Cards
   ============================================ */
.cost-summary {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.cost-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    text-align: center;
}

.cost-card.highlight {
    background: linear-gradient(135deg, hsl(142, 71%, 45%, 0.15), hsl(142, 71%, 45%, 0.05));
    border-color: hsl(142, 71%, 45%, 0.3);
}

.cost-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.cost-value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.cost-value.small {
    font-size: var(--font-size-xl);
}

/* ============================================
   Savings Potential Section
   ============================================ */
#savings-potential {
    margin-bottom: var(--spacing-md);
}

.savings-card {
    background: linear-gradient(135deg, hsl(38, 92%, 50%, 0.15), hsl(38, 92%, 50%, 0.05));
    border: 1px solid hsl(38, 92%, 50%, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

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

.savings-icon {
    font-size: var(--font-size-xl);
}

.savings-title {
    font-weight: 600;
    font-size: var(--font-size-base);
}

.savings-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.savings-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
}

.savings-item.review-needed {
    cursor: pointer;
    padding: var(--spacing-sm);
    margin: var(--spacing-xs) calc(-1 * var(--spacing-sm));
    border-radius: var(--radius-md);
    background: hsl(0, 0%, 0%, 0.1);
}

.savings-item.review-needed:hover {
    background: hsl(0, 0%, 0%, 0.15);
}

.savings-amount {
    font-weight: 600;
    color: var(--accent-warning);
}

.savings-amount.potential {
    color: var(--accent-danger);
}

/* ============================================
   Cancellation Reminders
   ============================================ */
#cancel-reminders {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, hsl(0, 72%, 50%, 0.1), hsl(0, 72%, 50%, 0.02));
    border: 1px solid hsl(0, 72%, 50%, 0.25);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
}

.reminder-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-danger);
}

.reminder-icon {
    font-size: var(--font-size-lg);
}

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

.reminder-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.reminder-item:hover {
    background: var(--bg-elevated);
}

.reminder-item.urgent {
    border-left: 3px solid var(--accent-danger);
}

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

.reminder-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.reminder-date {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.reminder-days {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--accent-warning);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: hsl(38, 92%, 50%, 0.15);
    border-radius: var(--radius-full);
}

.reminder-days.urgent {
    color: var(--accent-danger);
    background: hsl(0, 72%, 50%, 0.15);
}

/* ============================================
   Upcoming Section
   ============================================ */
.upcoming-section {
    margin-bottom: var(--spacing-lg);
}

.upcoming-section h2 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

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

.upcoming-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upcoming-item:hover {
    border-color: var(--accent-secondary);
}

.upcoming-item.urgent {
    border-left: 3px solid var(--accent-warning);
}

.upcoming-icon {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.upcoming-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 0;
}

.upcoming-name {
    font-weight: 500;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upcoming-date {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.upcoming-price {
    font-weight: 600;
    font-size: var(--font-size-sm);
    flex-shrink: 0;
}

/* ============================================
   Filter Bar
   ============================================ */
.filter-bar {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    overflow-x: auto;
    padding-bottom: var(--spacing-xs);
    -webkit-overflow-scrolling: touch;
}

.filter-select {
    flex-shrink: 0;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' 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 0.5rem center;
    padding-right: 2rem;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

/* ============================================
   Subscription List & Cards
   ============================================ */
.subscription-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.subscription-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.subscription-card:hover {
    border-color: var(--accent-secondary);
    box-shadow: var(--shadow-md);
}

.subscription-card:active {
    transform: scale(0.99);
}

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

.sub-name-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 0;
    flex: 1;
}

.sub-category-icon {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-base);
    flex-shrink: 0;
}

.sub-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sub-status {
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    flex-shrink: 0;
}

.sub-status.aktiv {
    background-color: hsl(142, 71%, 45%, 0.15);
    color: hsl(142, 71%, 45%);
}

.sub-status.pausiert {
    background-color: hsl(38, 92%, 50%, 0.15);
    color: hsl(38, 92%, 50%);
}

.sub-status.gekündigt {
    background-color: hsl(0, 72%, 50%, 0.15);
    color: hsl(0, 72%, 50%);
}

.sub-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.sub-detail {
    display: flex;
    flex-direction: column;
}

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

.sub-detail-value {
    font-weight: 500;
    color: var(--text-primary);
}

.sub-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
}

.sub-category-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-xs);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
}

.sub-monthly-cost {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    font-weight: 500;
}

/* ============================================
   Empty State
   ============================================ */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    min-height: 50vh;
}

.empty-state.hidden {
    display: none;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   Form Styles
   ============================================ */
.form-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.form-header h2 {
    flex: 1;
    font-size: var(--font-size-lg);
}

.delete-btn {
    color: var(--accent-danger);
}

.subscription-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

input, select, textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: inherit;
    font-size: var(--font-size-base);
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

input::placeholder, textarea::placeholder {
    color: var(--text-muted);
}

textarea {
    resize: vertical;
    min-height: 4rem;
}

/* ============================================
   Review Mode
   ============================================ */
#view-review .form-header {
    margin-bottom: var(--spacing-md);
}

.review-intro {
    background: linear-gradient(135deg, hsl(260, 60%, 55%, 0.15), hsl(260, 60%, 55%, 0.05));
    border: 1px solid hsl(260, 60%, 55%, 0.3);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.review-intro-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.review-intro h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.review-intro p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

#review-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.no-subs-message {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-xl);
}

.review-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
}

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

.review-category-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

.review-card-info {
    display: flex;
    flex-direction: column;
}

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

.review-card-category {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.review-card-cost {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.review-cost-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
}

.review-cost-row.highlight {
    font-weight: 600;
    font-size: var(--font-size-base);
    color: var(--accent-warning);
}

.review-cost-value {
    font-weight: 600;
}

.review-last-check {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.review-question {
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.review-actions {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--spacing-sm);
}

.review-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.review-btn.keep {
    background: hsl(142, 71%, 45%, 0.15);
    color: hsl(142, 71%, 45%);
}

.review-btn.keep:hover {
    background: hsl(142, 71%, 45%, 0.25);
}

.review-btn.pause {
    background: hsl(38, 92%, 50%, 0.15);
    color: hsl(38, 92%, 50%);
}

.review-btn.pause:hover {
    background: hsl(38, 92%, 50%, 0.25);
}

.review-btn.cancel {
    background: hsl(0, 72%, 50%, 0.15);
    color: hsl(0, 72%, 50%);
}

.review-btn.cancel:hover {
    background: hsl(0, 72%, 50%, 0.25);
}

/* ============================================
   Export View
   ============================================ */
.export-options {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.export-options h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.export-filter {
    margin-bottom: var(--spacing-md);
}

.export-filter label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.export-options .btn {
    margin-bottom: var(--spacing-sm);
}

.export-options .btn:last-child {
    margin-bottom: 0;
}

.import-label {
    cursor: pointer;
}

/* ============================================
   Settings View
   ============================================ */
.settings-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.setting-item label {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.setting-item select {
    width: auto;
    padding: var(--spacing-sm) var(--spacing-md);
}

.setting-item.danger {
    border-color: hsl(0, 72%, 50%, 0.3);
}

.app-info {
    margin-top: var(--spacing-xl);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.app-info p {
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   Bottom Navigation
   ============================================ */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: var(--bottom-nav-height);
    padding-bottom: var(--safe-area-bottom);
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    min-width: 4rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.nav-item .icon {
    width: 1.5rem;
    height: 1.5rem;
}

.nav-item:hover,
.nav-item.active {
    color: var(--accent-primary);
}

.nav-item.add-btn {
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border-radius: var(--radius-lg);
    margin: 0 var(--spacing-sm);
}

.dark .nav-item.add-btn {
    color: hsl(222, 47%, 11%);
}

.nav-item.add-btn:hover {
    opacity: 0.9;
}

/* ============================================
   Toast Notification
   ============================================ */
.toast {
    position: fixed;
    bottom: calc(var(--bottom-nav-height) + var(--spacing-md) + var(--safe-area-bottom));
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    z-index: 200;
    opacity: 0;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-left: 3px solid var(--accent-success);
}

.toast.error {
    border-left: 3px solid var(--accent-danger);
}

/* ============================================
   Print Styles
   ============================================ */
.print-only {
    display: none;
}

@media print {
    * {
        -webkit-print-color-adjust: exact !important;
        print-color-adjust: exact !important;
    }
    
    body {
        background-color: white !important;
        color: black !important;
        font-size: 12pt;
    }
    
    #app {
        display: none !important;
    }
    
    .no-print {
        display: none !important;
    }
    
    .print-only {
        display: block !important;
        padding: 1cm;
    }
    
    .print-header {
        text-align: center;
        margin-bottom: 1cm;
        padding-bottom: 0.5cm;
        border-bottom: 2px solid #333;
    }
    
    .print-header h1 {
        font-size: 18pt;
        margin-bottom: 0.25cm;
    }
    
    .print-header p {
        font-size: 10pt;
        color: #666;
    }
    
    .print-summary {
        display: flex;
        justify-content: center;
        gap: 2cm;
        margin-top: 0.5cm;
        font-size: 12pt;
    }
    
    .print-table {
        width: 100%;
        border-collapse: collapse;
        font-size: 10pt;
    }
    
    .print-table th,
    .print-table td {
        padding: 0.3cm 0.5cm;
        text-align: left;
        border-bottom: 1px solid #ddd;
    }
    
    .print-table th {
        background-color: #f5f5f5 !important;
        font-weight: 600;
        border-bottom: 2px solid #333;
    }
    
    .print-table tr:nth-child(even) {
        background-color: #fafafa !important;
    }
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (min-width: 768px) {
    main {
        max-width: 600px;
        margin: 0 auto;
        padding: var(--spacing-lg);
        padding-bottom: calc(var(--bottom-nav-height) + var(--safe-area-bottom) + var(--spacing-lg));
    }
    
    .bottom-nav {
        left: 50%;
        transform: translateX(-50%);
        max-width: 500px;
        border-radius: var(--radius-xl) var(--radius-xl) 0 0;
        border-left: 1px solid var(--border-color);
        border-right: 1px solid var(--border-color);
    }
    
    .cost-card {
        padding: var(--spacing-lg);
    }
    
    .cost-value {
        font-size: var(--font-size-2xl);
    }
}