/* Basis-Styles für Verwaltungsfristen-PWA */

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

:root {
    --primary: #000000;
    --primary-light: #333333;
    --secondary: #666666;
    --background: #ffffff;
    --surface: #f5f5f5;
    --border: #e0e0e0;
    --text: #000000;
    --text-light: #666666;
    --accent: #FF6B35;
    --accent-hover: #FF8555;
    --button-bg: #000000;
    --button-text: #ffffff;
    --error: #d32f2f;
    --success: #2e7d32;
    --warning: #f57c00;
    --spacing: 1rem;
    --border-radius: 8px;
}

/* Dark Mode als Standard */
html:not([data-theme="light"]) {
    --primary: #ffffff;
    --primary-light: #cccccc;
    --secondary: #999999;
    --background: #121212;
    --surface: #1e1e1e;
    --border: #333333;
    --text: #ffffff;
    --text-light: #b0b0b0;
    --accent: #FF6B35;
    --accent-hover: #FF8555;
    --button-bg: #2a2a2a;
    --button-text: #ffffff;
    --error: #ef5350;
    --success: #66bb6a;
    --warning: #ffa726;
}

/* Light Mode (explizit gesetzt) */
html[data-theme="light"] {
    --primary: #000000;
    --primary-light: #333333;
    --secondary: #666666;
    --background: #ffffff;
    --surface: #f5f5f5;
    --border: #e0e0e0;
    --text: #000000;
    --text-light: #666666;
    --accent: #FF6B35;
    --accent-hover: #FF8555;
    --button-bg: #000000;
    --button-text: #ffffff;
    --error: #d32f2f;
    --success: #2e7d32;
    --warning: #f57c00;
}

/* Dark Mode (explizit gesetzt) */
html[data-theme="dark"] {
    --primary: #ffffff;
    --primary-light: #cccccc;
    --secondary: #999999;
    --background: #121212;
    --surface: #1e1e1e;
    --border: #333333;
    --text: #ffffff;
    --text-light: #b0b0b0;
    --accent: #FF6B35;
    --accent-hover: #FF8555;
    --button-bg: #2a2a2a;
    --button-text: #ffffff;
    --error: #ef5350;
    --success: #66bb6a;
    --warning: #ffa726;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

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

main {
    animation: fadeIn 0.3s ease;
}

/* Loading Spinner */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing);
}

/* Screens */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: flex;
    flex-direction: column;
}

/* Login Screen */
#login-screen {
    justify-content: center;
    align-items: center;
    text-align: center;
}

#login-screen h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

#login-screen .subtitle {
    color: var(--text-light);
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    background: var(--accent);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    width: 100%;
    margin-top: var(--spacing);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text);
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    border-radius: var(--border-radius);
}

.btn-icon:hover {
    color: var(--accent);
    background: var(--surface);
    transform: scale(1.1);
}

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

.btn-icon .icon {
    color: inherit;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--text);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    border-radius: var(--border-radius);
}

.theme-toggle:hover {
    color: var(--accent);
    background: var(--surface);
    transform: rotate(15deg) scale(1.1);
}

.theme-toggle:active {
    transform: rotate(0deg) scale(0.95);
}

.theme-toggle .icon {
    color: inherit;
}

/* Dashboard */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

header h1 {
    font-size: 1.5rem;
}

main {
    flex: 1;
    padding: var(--spacing);
    padding-bottom: calc(var(--spacing) + 80px + env(safe-area-inset-bottom));
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

/* Banner */
.banner {
    background: var(--surface);
    padding: var(--spacing);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.banner.hidden {
    display: none;
}

.hidden {
    display: none !important;
}

/* Deadlines */
#deadlines-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
}

.deadline-card {
    background: var(--surface);
    padding: var(--spacing);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-left-width 0.2s ease, opacity 0.2s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
}

.deadline-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent);
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.deadline-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-left-width: 6px;
}

.deadline-card:hover::before {
    opacity: 0.03;
}

.deadline-card:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.deadline-card.overdue {
    border-left-color: var(--error);
    animation: pulse-warning 2s ease-in-out infinite;
}

.deadline-card.overdue:hover {
    border-left-color: var(--error);
}

.deadline-card.completed {
    opacity: 0.7;
    border-left-color: var(--success);
}

.deadline-card.completed:hover {
    opacity: 0.9;
}

@keyframes pulse-warning {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
    }
    50% {
        box-shadow: 0 0 0 4px rgba(239, 68, 68, 0);
    }
}

.deadline-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.5rem;
}

.deadline-title {
    font-weight: 600;
    font-size: 1.1rem;
}

.deadline-date {
    color: var(--text-light);
    font-size: 0.875rem;
}

.deadline-description {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.deadline-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.deadline-actions button {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    transition: transform 0.1s ease, background 0.2s ease;
}

.deadline-actions button:hover {
    transform: scale(1.05);
}

.deadline-actions button:active {
    transform: scale(0.95);
}

/* Progress Indicator für nahende Fristen */
.deadline-progress {
    height: 3px;
    background: var(--border);
    border-radius: 2px;
    margin-top: 0.75rem;
    overflow: hidden;
    position: relative;
}

.deadline-progress-bar {
    height: 100%;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s ease, background 0.3s ease;
}

.deadline-progress-bar.urgent {
    background: var(--error);
}

.deadline-progress-bar.warning {
    background: var(--warning);
}

/* Deadline Group Styles */
.deadline-group {
    margin-bottom: 2rem;
}

.deadline-group:last-child {
    margin-bottom: 0;
}

/* Navigation */
nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    padding: var(--spacing);
    padding-bottom: calc(var(--spacing) + env(safe-area-inset-bottom));
    border-top: 1px solid var(--border);
    background: var(--background);
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    text-decoration: none;
    color: var(--text-light);
    font-size: 0.875rem;
    padding: 0.5rem;
    min-height: 44px;
    min-width: 44px;
    justify-content: center;
    touch-action: manipulation;
    transition: all 0.2s ease;
    border-radius: var(--border-radius);
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--accent);
    transition: width 0.3s ease;
    border-radius: 2px 2px 0 0;
}

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

.nav-item.active::before {
    width: 60%;
}

.nav-item.admin-nav-item {
    color: #dc2626 !important;
}

.nav-item.admin-nav-item .icon {
    color: #dc2626;
}

.nav-item.admin-nav-item.active {
    color: #dc2626;
    background: rgba(220, 38, 38, 0.1);
}

.nav-item.admin-nav-item.active::before {
    background: #dc2626;
}

.nav-item:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

.nav-item:active {
    transform: translateY(0);
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
}

/* Skeleton Loader */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--surface) 0%,
        var(--border) 50%,
        var(--surface) 100%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--border-radius);
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.skeleton-card {
    background: var(--surface);
    padding: var(--spacing);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--border);
    margin-bottom: var(--spacing);
}

.skeleton-line {
    height: 1rem;
    margin-bottom: 0.75rem;
    border-radius: 4px;
}

.skeleton-line:last-child {
    margin-bottom: 0;
}

.skeleton-line.short {
    width: 60%;
}

.skeleton-line.medium {
    width: 80%;
}

.skeleton-line.full {
    width: 100%;
}

.skeleton-title {
    height: 1.5rem;
    width: 70%;
    margin-bottom: 0.5rem;
}

.skeleton-date {
    height: 1rem;
    width: 40%;
    margin-bottom: 1rem;
}

.skeleton-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.skeleton-button {
    height: 2rem;
    width: 80px;
    border-radius: var(--border-radius);
}

/* Skeleton für Detail-Ansicht */
.skeleton-detail {
    background: var(--surface);
    padding: var(--spacing);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing);
}

.skeleton-detail-title {
    height: 2rem;
    width: 80%;
    margin-bottom: 1rem;
}

.skeleton-detail-text {
    height: 1rem;
    width: 100%;
    margin-bottom: 0.75rem;
}

.skeleton-detail-text.short {
    width: 60%;
}

.loading-skeleton {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light);
}

.empty-state-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    opacity: 0.5;
    color: var(--text-light);
}

.empty-state-icon svg {
    width: 100%;
    height: 100%;
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.5rem;
}

.empty-state-description {
    font-size: 0.9375rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.empty-state-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.empty-state.empty-state-error .empty-state-icon {
    color: var(--error);
}

.empty-state.empty-state-success .empty-state-icon {
    color: var(--success);
}

.empty-state.empty-state-warning .empty-state-icon {
    color: var(--warning);
}

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

/* Keyboard Navigation */
.deadline-card:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.btn:focus,
.filter-btn:focus,
select:focus,
input:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: white;
    padding: 0.5rem 1rem;
    text-decoration: none;
    z-index: 10000;
}

.skip-link:focus {
    top: 0;
}

/* Error */
.error {
    background: var(--surface);
    color: var(--error);
    padding: var(--spacing);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing);
    border: 1px solid var(--error);
}

/* Info */
.info {
    margin-top: var(--spacing);
    color: var(--text-light);
    font-size: 0.875rem;
}

/* Icons */
.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: currentColor;
    flex-shrink: 0;
}

.icon svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
    fill: none;
}

.icon-small {
    width: 20px;
    height: 20px;
}

.icon-large {
    width: 32px;
    height: 32px;
}

/* Responsive */
@media (max-width: 600px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 1.25rem;
    }
}

/* Mobile Portrait Optimierung - PWA für Mobilgeräte im Hochformat */
@media (max-width: 600px) and (orientation: portrait) {
    /* Kompakte Navbar für Portrait-Modus */
    nav {
        padding: 0.5rem;
        padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
    }
    
    .nav-item {
        padding: 0.375rem 0.5rem;
        gap: 0.2rem;
        font-size: 0.75rem;
    }
    
    .nav-item .icon {
        width: 20px;
        height: 20px;
    }
    
    .nav-item span:not(.icon) {
        font-size: 0.7rem;
    }
    
    /* Main-Bereich anpassen für kompaktere Navbar */
    main {
        padding: 0.75rem;
        padding-bottom: calc(0.75rem + 70px + env(safe-area-inset-bottom));
    }
    
    /* Touch-Targets sicherstellen */
    .btn, .btn-icon, .theme-toggle, .nav-item {
        min-height: 44px;
        min-width: 44px;
    }
    
    /* Kompaktere Header */
    header {
        padding: 0.75rem;
    }
    
    header h1 {
        font-size: 1.1rem;
    }
    
    /* Kompaktere Cards - optimiert für Portrait */
    .deadline-card {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
    }
    
    .deadline-header {
        margin-bottom: 0.5rem;
    }
    
    .deadline-title {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    .deadline-date {
        font-size: 0.8125rem;
    }
    
    .deadline-description {
        font-size: 0.8125rem;
        margin-bottom: 0.5rem;
    }
    
    .deadline-actions {
        margin-top: 0.75rem;
        gap: 0.5rem;
    }
    
    .deadline-actions button {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
        flex: 1;
    }
    
    /* Kompaktere Banner */
    .banner {
        padding: 0.75rem;
        margin-bottom: 0.75rem;
        font-size: 0.875rem;
    }
    
    /* Kompaktere Filter-Buttons */
    .filter-bar {
        gap: 0.375rem;
        flex-wrap: wrap;
    }
    
    .filter-btn {
        padding: 0.5rem 0.75rem;
        font-size: 0.8125rem;
        flex: 1;
        min-width: 0;
    }
    
    /* Kompaktere Suchleiste */
    .search-bar {
        margin-bottom: 0.75rem;
    }
    
    /* Kompaktere Actions-Bar */
    .actions-bar {
        margin-bottom: 0.75rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    /* Kompaktere Formulare */
    .form-group {
        margin-bottom: 0.75rem;
    }
    
    .form-group input,
    .form-group select {
        padding: 0.625rem;
        font-size: 0.9375rem;
    }
    
    /* Kompaktere Empty States */
    .empty-state {
        padding: 2rem 1rem;
    }
    
    .empty-state-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 1rem;
    }
    
    .empty-state-title {
        font-size: 1.1rem;
    }
    
    .empty-state-description {
        font-size: 0.875rem;
    }
    
    /* Kompaktere Priority Badges */
    .priority-badge {
        font-size: 0.6875rem;
        padding: 0.1875rem 0.5rem;
        margin-right: 0.375rem;
    }
}

/* Sehr kleine Bildschirme - nur Icons in Navbar */
@media (max-width: 360px) and (orientation: portrait) {
    .nav-item span:not(.icon) {
        display: none;
    }
    
    .nav-item {
        padding: 0.5rem;
    }
    
    nav {
        padding: 0.5rem 0.25rem;
        padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
    }
    
    main {
        padding: 0.625rem;
        padding-bottom: calc(0.625rem + 60px + env(safe-area-inset-bottom));
    }
    
    .deadline-card {
        padding: 0.625rem;
    }
    
    .filter-btn {
        padding: 0.4375rem 0.625rem;
        font-size: 0.75rem;
    }
}

/* Toast Notifications */
#toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 400px;
    width: calc(100% - 2rem);
    pointer-events: none;
}

.toast {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    padding: 1rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    opacity: 0;
    transform: translateX(400px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: auto;
    min-width: 280px;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast.removing {
    opacity: 0;
    transform: translateX(400px);
}

.toast-content {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    flex: 1;
}

.toast-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

.toast-icon svg {
    width: 20px;
    height: 20px;
}

.toast-message {
    flex: 1;
    line-height: 1.5;
    color: var(--text);
}

.toast-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: color 0.2s;
    min-width: 24px;
    min-height: 24px;
}

.toast-close:hover {
    color: var(--text);
}

.toast-close svg {
    width: 16px;
    height: 16px;
}

/* Toast Types */
.toast-success {
    border-left: 4px solid var(--success);
}

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

.toast-error {
    border-left: 4px solid var(--error);
}

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

.toast-warning {
    border-left: 4px solid var(--warning);
}

.toast-warning .toast-icon {
    color: var(--warning);
}

.toast-info {
    border-left: 4px solid var(--accent);
}

.toast-info .toast-icon {
    color: var(--accent);
}

/* Mobile Toast Anpassungen */
@media (max-width: 600px) {
    #toast-container {
        top: 0.5rem;
        right: 0.5rem;
        left: 0.5rem;
        max-width: none;
        width: auto;
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
    
    .toast {
        transform: translateY(-100px);
    }
    
    .toast.show {
        transform: translateY(0);
    }
    
    .toast.removing {
        transform: translateY(-100px);
    }
}