/**
 * Station Portal - Base Design System
 * Einheitliche CSS-Variablen und Grundstile für alle Bereiche
 */

/* Inter Font - Self-hosted for CSP compliance */
@font-face {
    font-family: 'Inter';
    font-style: normal;
    font-weight: 400 700;
    font-display: swap;
    src: url('../fonts/Inter-Variable.woff2') format('woff2');
}

:root {
    /* Primary Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;

    /* Semantic Colors */
    --success: #059669;
    --success-bg: rgba(5, 150, 105, 0.08);
    --warning: #d97706;
    --warning-bg: rgba(217, 119, 6, 0.08);
    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.08);
    --info: #0284c7;
    --info-bg: rgba(2, 132, 199, 0.08);

    /* Background Colors - Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-hover: #e5e7eb;

    /* Text Colors - Light Mode */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;

    /* Border & Shadow */
    --border-color: #e5e7eb;
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);

    /* Layout */
    --radius-sm: 4px;
    --radius: 6px;
    --radius-md: 8px;
    --radius-lg: 8px;
    --radius-xl: 10px;

    /* Animation */
    --transition-fast: all 0.15s ease;
    --transition: all 0.2s ease;
    --transition-slow: all 0.3s ease;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Consolas', monospace;
}

/* Dark Mode */
[data-theme="dark"] {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-light: #60a5fa;

    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --bg-hover: #4b5563;

    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-tertiary: #6b7280;

    --border-color: #374151;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
}

/* System Dark Mode Preference (wenn kein Theme explizit gesetzt) */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --primary: #3b82f6;
        --primary-dark: #2563eb;
        --primary-light: #60a5fa;
        --bg-primary: #111827;
        --bg-secondary: #1f2937;
        --bg-tertiary: #374151;
        --bg-hover: #4b5563;
        --text-primary: #f3f4f6;
        --text-secondary: #9ca3af;
        --text-tertiary: #6b7280;
        --border-color: #374151;
        --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.25), 0 1px 2px rgba(0, 0, 0, 0.2);
        --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.25);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
        --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    }
}

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

body {
    font-family: var(--font-sans);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    transition: background-color 0.2s, color 0.2s;
    font-size: 14px;
}

/* Common Utilities */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }

/* Container */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px;
}

.container-sm { max-width: 800px; }
.container-lg { max-width: 1440px; }

/* Header Component */
.header {
    background: var(--bg-primary);
    padding: 16px 24px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    margin-bottom: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    border: 1px solid var(--border-color);
}

.header h1 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* Button System */
.btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    text-decoration: none;
    white-space: nowrap;
    font-family: inherit;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-tertiary);
}

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

.btn-success:hover:not(:disabled) {
    opacity: 0.9;
}

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

.btn-danger:hover:not(:disabled) {
    opacity: 0.9;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-lg {
    padding: 10px 20px;
    font-size: 15px;
}

/* Panel / Card Component */
.panel, .card {
    background: var(--bg-primary);
    padding: 20px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.panel h2 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel h3 {
    font-size: 14px;
    font-weight: 600;
    margin: 16px 0 8px 0;
    color: var(--text-primary);
}

/* Form System */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 13px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-tertiary);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.form-help {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-help svg {
    width: 14px;
    height: 14px;
}

/* Alert System */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    animation: slideIn 0.3s ease-out;
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border-left: 3px solid var(--success);
}

.alert-error {
    background: var(--danger-bg);
    color: var(--danger);
    border-left: 3px solid var(--danger);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning);
    border-left: 3px solid var(--warning);
}

.alert-info {
    background: var(--info-bg);
    color: var(--info);
    border-left: 3px solid var(--info);
}

/* Badge System */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
}

.badge-primary {
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

/* User Badge */
.user-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    font-size: 13px;
    color: var(--text-secondary);
}

/* Modal System */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(2px);
}

.modal.show, .modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.15s ease-out;
}

.modal-content {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: var(--radius-md);
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    animation: modalIn 0.25s ease-out;
}

.modal-header {
    margin-bottom: 16px;
}

.modal-header h3 {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 16px;
    margin: 0;
}

.modal-body {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* Theme Toggle Button */
.theme-btn {
    background: transparent;
    border: none;
    border-radius: 50%;
    padding: 0;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
    font-size: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.theme-btn:hover {
    background: var(--bg-tertiary);
}

.sun-icon, .moon-icon {
    display: inline-block;
    transition: opacity 0.2s;
}

[data-theme="dark"] .sun-icon { display: none; }
[data-theme="dark"] .moon-icon { display: inline-block; }
[data-theme="light"] .sun-icon { display: inline-block; }
[data-theme="light"] .moon-icon { display: none; }

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

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(12px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

@keyframes countUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

@keyframes badgePop {
    0% { transform: scale(0); }
    60% { transform: scale(1.15); }
    100% { transform: scale(1); }
}

@keyframes dotPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(1.4); }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

.fade-in-up {
    animation: fadeInUp 0.4s ease-out both;
}

.slide-in {
    animation: slideIn 0.2s ease-out;
}

.scale-in {
    animation: scaleIn 0.3s ease-out both;
}

/* Staggered animation delays for lists */
.stagger-1 { animation-delay: 0.05s; }
.stagger-2 { animation-delay: 0.1s; }
.stagger-3 { animation-delay: 0.15s; }
.stagger-4 { animation-delay: 0.2s; }
.stagger-5 { animation-delay: 0.25s; }
.stagger-6 { animation-delay: 0.3s; }
.stagger-7 { animation-delay: 0.35s; }
.stagger-8 { animation-delay: 0.4s; }

/* Grid Layouts */
.grid {
    display: grid;
    gap: 16px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

/* Loading Spinner */
.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 12px;
    }

    .header {
        flex-direction: column;
        align-items: stretch;
    }

    .header h1 {
        font-size: 16px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .header-controls {
        flex-wrap: wrap;
    }

    .btn {
        padding: 7px 14px;
        font-size: 13px;
    }
}

/* Tooltips */
[data-tooltip] {
    position: relative;
}

[data-tooltip]:hover::after {
    content: attr(data-tooltip);
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.375rem 0.625rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    z-index: 100;
    margin-top: 4px;
    box-shadow: var(--shadow-sm);
    pointer-events: none;
}

/* Print Styles */
@media print {
    .theme-btn,
    .btn-secondary,
    .header-controls {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .panel, .card {
        box-shadow: none;
        border: 1px solid #d1d5db;
    }
}

/* ========================================
   PWA / Mobile Optimierung
   ======================================== */

/* Touch-Targets: Mindestens 44px (Apple HIG) */
a, button, .btn, select, input[type="checkbox"], input[type="radio"],
.header-btn, .toggle-switch, .tab, .ptab {
    min-height: 44px;
}

/* Standalone-Mode (PWA installiert) */
@media (display-mode: standalone) {
    /* Kein doppeltes Browser-Chrome */
    body {
        -webkit-user-select: none;
        user-select: auto;
    }
}

/* Safe-Area für Notch-Displays (iPhone X+) */
@supports (padding-top: env(safe-area-inset-top)) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
        padding-left: env(safe-area-inset-left);
        padding-right: env(safe-area-inset-right);
    }
}

/* Kleine Smartphones (< 380px) */
@media (max-width: 380px) {
    .btn {
        padding: 6px 10px;
        font-size: 12px;
    }

    h1, h2 {
        font-size: 1rem;
    }

    .panel, .card, .settings-card {
        padding: 0.75rem;
    }

    table th, table td {
        padding: 0.375rem 0.5rem;
        font-size: 0.75rem;
    }
}