:root {
    --primary: #2d8cf0;
    --primary-dark: #1c7ad6;
    --primary-soft: #eaf3fd;
    --border: #d4d9de;
    --text: #2c3e50;
    --muted: #6b7785;
    --bg: #f0f2f5;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
}

/* ── Topnav ── */

.topnav {
    background: #fff;
    border-bottom: 1px solid #e2e6ea;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.topnav nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 22px;
    padding: 0 24px;
    height: 56px;
}

.topnav a {
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
}

.topnav a:hover {
    color: var(--primary);
}

.topnav .spacer {
    flex: 1;
}

.topnav .current-user {
    font-size: 13px;
    color: var(--muted);
}

.topnav button {
    background: none;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 5px 12px;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
}

.topnav button:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* ── Layout ── */

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px;
}

/* ── Buttons ── */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: 1px solid transparent;
    border-radius: 6px;
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    background: #fff;
    color: var(--text);
    text-decoration: none;
    line-height: 1.2;
}

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

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

.btn-default {
    border-color: var(--border);
    color: var(--text);
}

.btn-default:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-danger {
    background: #e74c3c;
    color: #fff;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

/* ── Forms ── */

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #4a5560;
}

.form-label .optional {
    font-weight: 400;
    color: var(--muted);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
textarea,
select {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    color: var(--text);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(45, 140, 240, 0.15);
}

/* Datumsfelder: WebKit/iOS gibt ihnen sonst eine intrinsische
   Mindestbreite, die schmale Container sprengt. */
input[type="date"] {
    -webkit-appearance: none;
    appearance: none;
    display: block;
    min-width: 0;
    max-width: 100%;
    min-height: 38px;
}

/* ── Alerts / Messages ── */

.messages {
    list-style: none;
    padding: 0;
    margin: 0 0 16px;
}

.messages li,
.alert {
    border-radius: 6px;
    padding: 10px 14px;
    font-size: 14px;
    margin-bottom: 10px;
}

.alert-success,
.messages li.success {
    background: #e8f6ec;
    color: #1d7a3a;
    border: 1px solid #bfe6cb;
}

.alert-danger,
.messages li.error {
    background: #fde8e8;
    color: #b02a2a;
    border: 1px solid #f5c2c2;
}

.alert-info,
.messages li.info {
    background: var(--primary-soft);
    color: var(--primary-dark);
    border: 1px solid #c3def8;
}

/* ── Overlay / Modal ── */

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow-y: auto;
    padding: 40px 16px;
}

.overlay-content {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 640px;
    padding: 24px;
    position: relative;
}

.overlay-content h4 {
    margin: 0 0 18px;
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 18px;
    font-size: 18px;
    color: var(--muted);
    cursor: pointer;
    line-height: 1;
}

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

.overlay-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.overlay-field {
    flex: 1;
    min-width: 180px;
}

.overlay-actions {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

/* ── Mobile ── */

@media (max-width: 768px) {
    main {
        padding: 12px;
    }

    .topnav nav {
        gap: 14px;
        padding: 0 14px;
        height: 52px;
    }

    .nav-hide-mobile {
        display: none;
    }

    /* 16px verhindert den Auto-Zoom von iOS beim Fokussieren */
    input[type="text"],
    input[type="email"],
    input[type="password"],
    input[type="number"],
    input[type="date"],
    textarea,
    select {
        font-size: 16px;
    }

    /* Overlays als Vollbild-Sheets */
    .overlay {
        padding: 0;
    }

    .overlay-content {
        max-width: none;
        min-height: 100%;
        border-radius: 0;
        padding: 20px 16px;
    }

    .modal-close {
        top: 12px;
        right: 12px;
        font-size: 20px;
        padding: 6px;
    }

    /* Felder untereinander statt nebeneinander */
    .overlay-row {
        display: block;
        margin-bottom: 0;
    }

    .overlay-field {
        min-width: 0;
        margin-bottom: 16px;
    }

    .overlay-actions .btn {
        flex: 1;
        justify-content: center;
        padding: 11px 16px;
    }
}

@media (max-width: 600px) {
    .topnav .current-user {
        display: none;
    }
}