/* ============================================
   Zeiterfassung Mobile - PWA Styles
   Touch-optimiert, iOS & Android kompatibel
   ============================================ */

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

:root {
    /* Colors */
    --primary: #0d6efd;
    --success: #198754;
    --danger: #dc3545;
    --warning: #ffc107;
    --info: #0dcaf0;
    --light: #f8f9fa;
    --dark: #212529;
    --gray: #6c757d;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.12);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;

    /* Touch Target (min 44x44px für Touch) */
    --touch-min: 44px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ============================================
   Screens & Layout
   ============================================ */

#app {
    max-width: 600px;
    margin: 0 auto;
    min-height: 100vh;
    position: relative;
}

.screen {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
}

.screen.hidden {
    display: none !important;
}

/* ============================================
   Offline Indicator
   ============================================ */

.offline-indicator {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--warning);
    color: var(--dark);
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
    z-index: 9999;
    box-shadow: var(--shadow-md);
    animation: slideDown 0.3s ease-out;
}

.offline-indicator.hidden {
    display: none;
}

.offline-icon {
    margin-right: var(--spacing-xs);
}

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

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

#login-screen {
    justify-content: center;
    align-items: center;
}

.logo {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.6s ease-out;
}

.logo-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.logo h1 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.logo .subtitle {
    color: rgba(255,255,255,0.9);
    font-size: var(--font-size-base);
}

.form-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 400px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

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

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

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--dark);
    font-size: var(--font-size-sm);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid #e9ecef;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all 0.2s;
    min-height: var(--touch-min);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13,110,253,0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
    font-family: var(--font-family);
}

select.form-control {
    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='%23333' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    min-height: var(--touch-min);
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
}

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

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

.btn-primary:hover, .btn-primary:active {
    background: #0b5ed7;
}

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

.btn-success:hover, .btn-success:active {
    background: #157347;
}

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

.btn-danger:hover, .btn-danger:active {
    background: #bb2d3b;
}

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

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-lg);
    min-height: 56px;
}

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

.btn-block {
    width: 100%;
}

.btn-icon {
    background: transparent;
    border: none;
    font-size: var(--font-size-lg);
    cursor: pointer;
    padding: var(--spacing-sm);
    min-width: var(--touch-min);
    min-height: var(--touch-min);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background 0.2s;
}

.btn-icon:active {
    background: rgba(0,0,0,0.1);
}

.btn-link {
    background: transparent;
    border: none;
    color: var(--primary);
    text-decoration: underline;
    cursor: pointer;
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-loading {
    opacity: 0.7;
    pointer-events: none;
}

.button-group {
    display: flex;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

/* ============================================
   Main Screen
   ============================================ */

#main-screen {
    padding: 0;
    background: var(--light);
}

.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 600px;
    margin: 0 auto;
}

.header-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.wave {
    display: inline-block;
    animation: wave 2s infinite;
}

@keyframes wave {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(20deg); }
    75% { transform: rotate(-20deg); }
}

.content {
    flex: 1;
    padding: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

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

.card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

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

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.card-header-with-toggle {
    margin-bottom: var(--spacing-lg);
}

.card-header-with-toggle .card-title {
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Mode Toggle (Timer vs Manual)
   ============================================ */

.mode-toggle {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--light);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
}

.toggle-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: all 0.2s;
    min-height: var(--touch-min);
}

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

.toggle-btn.active {
    background: white;
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   Entry Modes
   ============================================ */

.entry-mode {
    animation: fadeIn 0.3s ease-out;
}

.entry-mode.hidden {
    display: none !important;
}

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

/* ============================================
   Time Range Group (Manual Mode)
   ============================================ */

.time-range-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.time-range-group .form-group {
    margin-bottom: var(--spacing-md);
}

/* Date & Time Inputs */
input[type="date"],
input[type="time"] {
    appearance: none;
    -webkit-appearance: none;
}

input[type="date"]::-webkit-calendar-picker-indicator,
input[type="time"]::-webkit-calendar-picker-indicator {
    cursor: pointer;
    font-size: var(--font-size-lg);
}

/* ============================================
   Duration Display
   ============================================ */

.duration-display {
    background: var(--light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    text-align: center;
    border: 2px solid #e9ecef;
}

.duration-display.hidden {
    display: none;
}

.duration-label {
    font-size: var(--font-size-sm);
    color: var(--gray);
    margin-right: var(--spacing-sm);
}

.duration-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary);
}

/* ============================================
   Timer Display
   ============================================ */

.timer-display {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
    text-align: center;
    box-shadow: var(--shadow-md);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.7); }
    50% { box-shadow: 0 0 0 10px rgba(102, 126, 234, 0); }
}

.timer-display.hidden {
    display: none;
}

.timer-label {
    color: rgba(255,255,255,0.8);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-xs);
}

.timer-value {
    font-size: 3rem;
    font-weight: 700;
    color: white;
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.05em;
}

.timer-customer {
    color: rgba(255,255,255,0.9);
    font-size: var(--font-size-base);
    margin-top: var(--spacing-sm);
}

/* ============================================
   Entries List
   ============================================ */

.entries-list {
    max-height: 400px;
    overflow-y: auto;
}

.entry-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid #e9ecef;
    transition: background 0.2s;
}

.entry-item:last-child {
    border-bottom: none;
}

.entry-item:active {
    background: var(--light);
}

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

.entry-customer {
    font-weight: 600;
    color: var(--dark);
}

.entry-hours {
    font-weight: 700;
    color: var(--primary);
}

.entry-date {
    font-size: var(--font-size-sm);
    color: var(--gray);
    margin-bottom: var(--spacing-xs);
}

.entry-time {
    font-size: var(--font-size-sm);
    color: var(--gray);
}

.entry-notes {
    font-size: var(--font-size-sm);
    color: var(--dark);
    margin-top: var(--spacing-xs);
    font-style: italic;
}

.entry-time-badge {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--primary);
}

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

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

.adjust-form {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid #e9ecef;
}

.adjust-form-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--gray);
}

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

.empty-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Pending Sync Badge
   ============================================ */

.pending-badge {
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.pending-badge.hidden {
    display: none;
}

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

.badge-text {
    flex: 1;
    font-size: var(--font-size-sm);
    color: var(--dark);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background: white;
    border-top: 1px solid #e9ecef;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
}

.footer-info {
    font-size: var(--font-size-sm);
    color: var(--gray);
}

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

.toast-container {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 9999;
    pointer-events: none;
}

.toast {
    background: var(--dark);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease-out;
    pointer-events: all;
}

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

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

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

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

/* ============================================
   Error Message
   ============================================ */

.error-message {
    background: #f8d7da;
    color: #842029;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.error-message.hidden {
    display: none;
}

/* ============================================
   Install Prompt
   ============================================ */

.install-prompt {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.install-prompt.hidden {
    display: none;
}

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

.hidden {
    display: none !important;
}

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* ============================================
   Responsive (Tablets & Larger)
   ============================================ */

@media (min-width: 768px) {
    .content {
        padding: var(--spacing-xl);
    }
}

/* ============================================
   Safe Area (iPhone Notch etc.)
   ============================================ */

@supports (padding: max(0px)) {
    body {
        padding-left: max(0px, env(safe-area-inset-left));
        padding-right: max(0px, env(safe-area-inset-right));
    }

    .header,
    .footer {
        padding-left: max(var(--spacing-lg), env(safe-area-inset-left));
        padding-right: max(var(--spacing-lg), env(safe-area-inset-right));
    }
}