/* Mobile-First CSS for Milchtankstelle */

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

:root {
    --primary-color: #1a1a2e;
    --secondary-color: #16213e;
    --accent-color: #0f3460;
    --highlight-color: #e94560;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --success-color: #4caf50;
    --border-color: #2a2a3e;
    --card-bg: #1e1e3e;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
}

.container {
    max-width: 100%;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* Welcome Screen */
.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    text-align: center;
    padding: 20px;
}

.logo {
    font-size: 3rem;
    margin-bottom: 10px;
    font-weight: bold;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    max-width: 300px;
}

/* Buttons */
.btn {
    padding: 15px 30px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
    touch-action: manipulation;
}

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

.btn-primary:hover,
.btn-primary:active {
    background: #d63952;
    transform: scale(1.02);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--highlight-color);
}

.btn-secondary:hover,
.btn-secondary:active {
    background: var(--highlight-color);
    transform: scale(1.02);
}

.btn-admin {
    background: var(--accent-color);
    color: var(--text-primary);
    border: 2px solid var(--accent-color);
}

.btn-admin:hover,
.btn-admin:active {
    background: #0d2a4d;
    transform: scale(1.02);
}

.btn-block {
    width: 100%;
}

.btn-logout {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
}

.btn-logout:hover {
    background: var(--card-bg);
    color: var(--text-primary);
}

/* Auth Container */
.auth-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 40px 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 20px;
    display: inline-block;
    font-size: 0.9rem;
}

.back-link:hover {
    color: var(--text-primary);
}

.auth-container h2 {
    margin: 20px 0 30px;
    font-size: 1.8rem;
}

.auth-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 14px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

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

.auth-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-footer a {
    color: var(--highlight-color);
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

.error-message {
    background: rgba(233, 69, 96, 0.2);
    border: 1px solid var(--highlight-color);
    color: var(--highlight-color);
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    display: none;
    font-size: 0.9rem;
}

.error-message.show {
    display: block;
}

/* Dashboard Tabs */
.dashboard-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.dashboard-tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.dashboard-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.dashboard-tab.active {
    color: var(--highlight-color);
    border-bottom-color: var(--highlight-color);
    background: rgba(233, 69, 96, 0.1);
}

/* Admin Tabs */
.admin-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.admin-tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.admin-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.admin-tab.active {
    color: var(--highlight-color);
    border-bottom-color: var(--highlight-color);
    background: rgba(233, 69, 96, 0.1);
}

/* User Management Styles */
.user-management-section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.user-management-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.user-management-header h2 {
    font-size: 1.5rem;
    margin: 0;
}

.user-management-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.user-management-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: var(--primary-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    gap: 20px;
    flex-wrap: wrap;
}

.user-management-info {
    flex: 1;
    min-width: 200px;
}

.user-management-name {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.user-management-details {
    display: flex;
    flex-direction: column;
    gap: 5px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.user-management-details span {
    display: flex;
    gap: 10px;
}

.user-management-actions {
    display: flex;
    gap: 10px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-danger {
    background: var(--highlight-color);
    color: white;
    border: none;
}

.btn-danger:hover {
    background: #c73850;
    transform: translateY(-2px);
}

/* Login Tabs */
.login-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.login-tab {
    flex: 1;
    padding: 12px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.login-tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.login-tab.active {
    color: var(--highlight-color);
    border-bottom-color: var(--highlight-color);
    background: rgba(233, 69, 96, 0.1);
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.dashboard-header .logo {
    font-size: 2rem;
    margin: 0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.user-info span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.dashboard-main {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Tab Section */
.tab-section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.tab-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.tab-summary {
    display: flex;
    justify-content: space-between;
    padding: 15px;
    background: var(--primary-color);
    border-radius: 12px;
    margin-bottom: 20px;
}

.tab-total,
.tab-count {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.tab-total .label,
.tab-count .label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.tab-total .amount {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--highlight-color);
}

.tab-count span:last-child {
    font-size: 1.5rem;
    font-weight: bold;
}

.tab-items {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tab-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    background: var(--primary-color);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    gap: 15px;
}

.tab-item-checkbox {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    min-width: 30px;
}

.tab-item-checkbox input[type="checkbox"] {
    width: 22px;
    height: 22px;
    cursor: pointer;
    accent-color: var(--highlight-color);
    margin: 0;
    flex-shrink: 0;
}

.tab-item-checkbox .paid-checkmark {
    color: var(--success-color);
    font-size: 1.2rem;
    font-weight: bold;
}

.tab-item-info {
    flex: 1;
}

.tab-item-name {
    font-weight: 600;
    margin-bottom: 5px;
}

.tab-item-time {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.tab-item-time .paid-badge {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    background: rgba(76, 175, 80, 0.2);
    color: var(--success-color);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.tab-item-price {
    font-weight: bold;
    color: var(--highlight-color);
    font-size: 1.1rem;
}

.tab-item.paid {
    opacity: 0.6;
}

.tab-item.paid .tab-item-name,
.tab-item.paid .tab-item-price {
    text-decoration: line-through;
}

.paid-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 15px;
    background: rgba(76, 175, 80, 0.2);
    border: 1px solid var(--success-color);
    border-radius: 12px;
    margin-bottom: 20px;
}

.paid-badge {
    font-weight: 600;
    color: var(--success-color);
    font-size: 1.1rem;
}

.paid-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.mark-paid-container {
    margin-top: 20px;
}

.payment-info {
    margin-bottom: 15px;
}

.payment-hint {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
    margin: 0;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px 20px;
    font-style: italic;
}

/* Beverages Section */
.beverages-section {
    margin-bottom: 40px;
}

.beverages-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.beverage-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}

.beverage-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    touch-action: manipulation;
    user-select: none;
}

.beverage-card:active {
    transform: scale(0.95);
}

.beverage-card:hover {
    border-color: var(--highlight-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.2);
}

.beverage-emoji {
    font-size: 3rem;
    margin-bottom: 10px;
}

.beverage-name {
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1rem;
}

.beverage-price {
    color: var(--highlight-color);
    font-weight: bold;
    font-size: 1.1rem;
}

/* Responsive adjustments for larger mobile screens */
@media (min-width: 480px) {
    .beverage-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Tablet and larger */
@media (min-width: 768px) {
    .container {
        max-width: 600px;
    }
    
    .beverage-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

.tab-item {
    animation: fadeIn 0.3s ease;
}

.beverage-card {
    animation: fadeIn 0.3s ease;
}

/* Admin Dashboard Styles */
.admin-summary {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.admin-summary h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.summary-cards {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 15px;
}

.summary-card {
    background: var(--primary-color);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
    text-align: center;
}

.summary-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.summary-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--highlight-color);
}

.users-section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.users-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.users-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.user-card {
    background: var(--primary-color);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.user-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.user-name {
    font-size: 1.2rem;
    font-weight: 600;
}

.user-paid-badge {
    font-size: 0.85rem;
    color: var(--success-color);
    margin-top: 5px;
    font-weight: 500;
}

.user-total {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--highlight-color);
}

.user-card.paid {
    opacity: 0.7;
    border-color: var(--success-color);
}

.user-card.paid .user-total {
    text-decoration: line-through;
    opacity: 0.6;
}

.user-tab-items {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.user-tab-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.tab-item-main {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
}

.tab-item-details {
    display: flex;
    align-items: center;
    gap: 15px;
}

.tab-item-added-by {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: rgba(233, 69, 96, 0.2);
    padding: 2px 8px;
    border-radius: 4px;
    font-style: italic;
}

.user-tab-item.paid {
    opacity: 0.6;
}

.user-tab-item.paid .tab-item-name,
.user-tab-item.paid .tab-item-price {
    text-decoration: line-through;
}

.mark-paid-btn {
    margin-top: 15px;
}

.tab-item-emoji {
    font-size: 1.5rem;
}

.tab-item-name {
    flex: 1;
    font-weight: 500;
}

.tab-item-time {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tab-item-price {
    font-weight: bold;
    color: var(--highlight-color);
}

.empty-tab {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    font-style: italic;
    font-size: 0.9rem;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: var(--primary-color);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    gap: 10px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    justify-content: flex-end;
}

.modal-footer .btn {
    min-width: 100px;
}

/* Cash Registry Styles */
.cash-registry-section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.cash-registry-section h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.cash-registry-card {
    background: var(--primary-color);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid var(--border-color);
}

.cash-amount-display {
    text-align: center;
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
}

.cash-label {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.cash-value {
    font-size: 3rem;
    font-weight: bold;
    color: var(--success-color);
}

.cash-controls {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.cash-controls .btn {
    width: 100%;
}

.btn-success {
    background: var(--success-color);
    color: white;
    border: none;
}

.btn-success:hover {
    background: #45a049;
    transform: translateY(-2px);
}

.btn-warning {
    background: #ff9800;
    color: white;
    border: none;
}

.btn-warning:hover {
    background: #f57c00;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--text-secondary);
    color: white;
    border: none;
}

.btn-secondary:hover {
    background: #9e9e9e;
    transform: translateY(-2px);
}

/* Cash Registry for Users (Dashboard) */
.cash-registry-section-user {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid var(--border-color);
    margin-bottom: 30px;
}

.cash-registry-section-user h2 {
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.cash-registry-card-user {
    background: var(--primary-color);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid var(--border-color);
}

.cash-amount-display-user {
    text-align: center;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.cash-value-user {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--success-color);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 25px;
    border: 1px solid var(--border-color);
    max-width: 400px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.modal-buttons {
    display: flex;
    gap: 12px;
    margin-top: 20px;
    justify-content: flex-end;
}

.modal-buttons .btn {
    flex: 1;
    min-width: 100px;
}

@media (min-width: 480px) {
    .cash-controls {
        flex-direction: row;
    }
    
    .cash-controls .btn {
        flex: 1;
    }
}

/* Responsive adjustments for admin dashboard */
@media (min-width: 480px) {
    .summary-cards {
        grid-template-columns: repeat(3, 1fr);
    }
}