/**
 * fixrelease - Mobile-first CSS
 * iOS-Design-System
 */

/* ===== CSS-Variablen ===== */
:root {
    /* Farben (iOS-inspiriert) */
    --color-primary: #007AFF;
    --color-primary-dark: #0051D5;
    --color-success: #34C759;
    --color-warning: #FF9500;
    --color-error: #FF3B30;
    --color-text: #000000;
    --color-text-secondary: #6C6C70;
    --color-bg: #F2F2F7;
    --color-card: #FFFFFF;
    --color-border: #C6C6C8;
    --color-separator: #E5E5EA;

    /* Schriften */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro', 'Segoe UI', sans-serif;
    --font-size-small: 13px;
    --font-size-base: 16px; /* Wichtig: min 16px für iOS (kein Zoom) */
    --font-size-large: 18px;
    --font-size-title: 24px;

    /* Abstände */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Radien */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Schatten */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);

    /* Safe-Area-Insets für iPhone */
    --safe-area-top: env(safe-area-inset-top, 0px);
    --safe-area-bottom: env(safe-area-inset-bottom, 0px);
    --safe-area-left: env(safe-area-inset-left, 0px);
    --safe-area-right: env(safe-area-inset-right, 0px);

    /* Bottom-Nav-Höhe */
    --bottom-nav-height: 64px;
}

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

html, body {
    height: 100%;
    overflow-x: hidden;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Kein Bounce-Scrolling */
    overscroll-behavior: none;
}

/* ===== Main Content ===== */
.main-content {
    min-height: 100vh;
    padding: var(--spacing-md);
    padding-top: calc(var(--spacing-md) + var(--safe-area-top));
    padding-bottom: calc(var(--bottom-nav-height) + var(--spacing-md) + var(--safe-area-bottom));
}

.main-content.no-nav {
    padding-bottom: calc(var(--spacing-md) + var(--safe-area-bottom));
}

.main-content.fullscreen {
    padding: 0;
    padding-top: var(--safe-area-top);
    padding-bottom: var(--safe-area-bottom);
}

/* ===== Karten ===== */
.card {
    background: var(--color-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-header {
    font-size: var(--font-size-large);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.card-body {
    color: var(--color-text);
}

/* ===== Formulare ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.form-label.required::after {
    content: ' *';
    color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-base); /* Min 16px für iOS */
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-hint {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: var(--font-size-small);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    /* Touch-Target min 44pt */
    min-height: 44px;
    min-width: 44px;
}

.btn:active {
    transform: scale(0.98);
    opacity: 0.8;
}

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

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

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

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

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

.btn-large {
    padding: 16px 32px;
    font-size: var(--font-size-large);
    min-height: 52px;
}

.btn-block {
    width: 100%;
    display: block;
}

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

/* ===== Bottom Navigation ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: calc(var(--bottom-nav-height) + var(--safe-area-bottom));
    background: var(--color-card);
    border-top: 1px solid var(--color-separator);
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    padding-top: 8px;
    padding-bottom: var(--safe-area-bottom);
    z-index: 100;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 8px;
    text-decoration: none;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
    /* Touch-Target */
    min-width: 44px;
    min-height: 44px;
}

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

.nav-item-primary {
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-md);
    margin: 0 8px;
    padding: 12px 16px;
}

.nav-item-primary .nav-icon {
    width: 24px;
    height: 24px;
}

.nav-icon {
    width: 28px;
    height: 28px;
    margin-bottom: 4px;
}

.nav-label {
    font-size: 11px;
    font-weight: 500;
}

/* ===== Flash Messages ===== */
.flash-message {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 500;
}

.flash-success {
    background: #D1F4E0;
    color: #0D663F;
    border: 1px solid var(--color-success);
}

.flash-error {
    background: #FFE5E5;
    color: #C41E3A;
    border: 1px solid var(--color-error);
}

.flash-warning {
    background: #FFF4E5;
    color: #996300;
    border: 1px solid var(--color-warning);
}

/* ===== Utilities ===== */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-secondary); }
.text-error { color: var(--color-error); }
.text-success { color: var(--color-success); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

.hidden { display: none; }

/* ===== Loading-Spinner ===== */
.spinner {
    border: 3px solid var(--color-separator);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
    margin: var(--spacing-lg) auto;
}

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

/* ===== Responsive ===== */
@media (min-width: 768px) {
    .main-content {
        max-width: 600px;
        margin: 0 auto;
    }
}