/* Variablen & Basis-Setup */
:root {
    --apple-blue: #007AFF;
    --apple-green: #34C759;
    --bg-color: #F5F5F7;
    --card-bg: rgba(255, 255, 255, 0.85);
    --text-main: #1D1D1F;
    --text-sub: #86868B;
}

* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 550px; /* Breitere Fassung für den neuen Header */
}

/* Header & Navigation */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 0 5px;
}

.header-brand-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    object-fit: cover;
}

.brand {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.back-link {
    text-decoration: none;
    color: var(--apple-blue);
    font-size: 15px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.back-link:hover {
    opacity: 0.7;
}

/* Calculator Card */
.calculator-card {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 30px;
    border-radius: 24px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}

.row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.input-group {
    display: flex;
    flex-direction: column;
    width: 100%;
}

label {
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text-sub);
    text-transform: uppercase;
    margin-left: 4px;
}

input, select {
    padding: 14px;
    border-radius: 12px;
    border: 1px solid #D2D2D7;
    background: #FFF;
    font-size: 16px;
    outline: none;
    transition: all 0.2s;
    width: 100%;
}

input:focus, select:focus {
    border-color: var(--apple-blue);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

/* Karte */
#map {
    height: 250px;
    width: 100%;
    border-radius: 15px;
    margin-top: 20px;
    border: 1px solid #D2D2D7;
}

/* Buttons */
button {
    width: 100%;
    padding: 16px;
    border-radius: 14px;
    border: none;
    background-color: var(--apple-blue);
    color: white;
    font-size: 17px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
    transition: transform 0.1s, opacity 0.2s;
}

button:active {
    transform: scale(0.98);
}

/* Ergebnisse */
.result-area {
    margin-top: 25px;
    padding-top: 20px;
    border-top: 1px solid #D2D2D7;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.result-item strong {
    font-size: 20px;
    color: var(--apple-blue);
}

.secondary {
    font-size: 14px;
    color: var(--text-sub);
}

.toggle-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 10px 0 20px 0;
    font-size: 14px;
    color: var(--text-main);
}

/* Mobile Optimierung */
@media (max-width: 480px) {
    body {
        padding: 10px;
        align-items: flex-start; /* Erleichtert das Scrollen auf kleinen Handys */
    }
    
    .main-header {
        flex-direction: row;
        margin-bottom: 20px;
    }

    .brand {
        font-size: 18px;
    }

    .row {
        flex-direction: column;
        gap: 10px;
    }

    .calculator-card {
        padding: 20px;
    }

    input, select {
        font-size: 16px; /* Verhindert Auto-Zoom auf iOS */
    }
}