:root {
    --bg: #f4f4f9;
    --card-bg: #ffffff;
    --text: #333333;
    --text-muted: #666666;
    --border: #e0e0e0;
    --accent: #4CAF50;
    --accent-dark: #45a049;
    --blue: #2196F3;
    --blue-dark: #0b7dda;
    --danger: #e53935;
    --danger-dark: #c62828;
    --success-bg: #dff0d8;
    --success-text: #3c763d;
    --success-border: #d6e9c6;
    --error-bg: #fdecea;
    --error-text: #b71c1c;
    --error-border: #f5c6cb;
    --internal-bg: #fff3e0;
    --internal-border: #ff9800;
    --internal-text: #e65100;
}

html.dark {
    --bg: #14161a;
    --card-bg: #1f2229;
    --text: #e8e8e8;
    --text-muted: #a0a0a0;
    --border: #333740;
    --success-bg: #1f3a24;
    --success-text: #a5d6a7;
    --success-border: #2e7d32;
    --error-bg: #3a1f1f;
    --error-text: #ef9a9a;
    --error-border: #b71c1c;
    --internal-bg: #3a2c14;
    --internal-border: #ff9800;
    --internal-text: #ffb74d;
}

* {
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 20px;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.page {
    max-width: 500px;
    margin: 20px auto;
    padding: 25px;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
}

.page-wide {
    max-width: 720px;
}

h2 {
    text-align: center;
    color: var(--accent);
    margin-top: 0;
}

h3 {
    color: var(--text);
    border-bottom: 1px solid var(--border);
    padding-bottom: 6px;
    margin-top: 30px;
}

label {
    font-weight: bold;
    display: block;
    margin-top: 15px;
    color: var(--text);
}

.hint-text {
    color: var(--text-muted);
    font-size: 13px;
    margin: 4px 0 12px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: normal;
}

.checkbox-label input {
    width: auto;
}

select, input[type="text"], input[type="number"], input[type="password"], input[type="email"], textarea {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid var(--border);
    border-radius: 4px;
    box-sizing: border-box;
    background: var(--card-bg);
    color: var(--text);
    font-family: inherit;
}

textarea {
    resize: vertical;
}

.duration-group {
    align-items: center;
}

.duration-group input {
    flex: 1;
}

.unit-sep {
    color: var(--text-muted);
    font-weight: bold;
    white-space: nowrap;
}

.filament-rows {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 6px;
}

.filament-row {
    display: grid;
    grid-template-columns: 1.2fr 1.2fr 1fr auto auto;
    gap: 8px;
    align-items: center;
}

.filament-row select,
.filament-row input {
    margin-top: 0;
}

.support-check {
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: normal;
    font-size: 13px;
    color: var(--text-muted);
    white-space: nowrap;
}

.support-check input {
    width: auto;
}

.remove-row-btn {
    width: auto;
    margin-top: 0;
    padding: 6px 10px;
    background-color: var(--danger);
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.remove-row-btn:hover {
    background-color: var(--danger-dark);
}

.add-row-btn {
    margin-top: 8px;
}

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

@media (max-width: 600px) {
    .filament-row {
        grid-template-columns: 1fr 1fr;
        grid-template-areas: "type color" "weight support" "remove remove";
    }
    .filament-row select:nth-child(1) { grid-area: type; }
    .filament-row select:nth-child(2) { grid-area: color; }
    .filament-row input.seg-weight { grid-area: weight; }
    .filament-row .support-check { grid-area: support; }
    .filament-row .remove-row-btn { grid-area: remove; width: 100%; }
}

button {
    width: 100%;
    background-color: var(--accent);
    color: white;
    padding: 12px;
    margin-top: 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
}

button:hover {
    background-color: var(--accent-dark);
}

.full-width {
    width: 100%;
}

.small-btn {
    display: inline-block;
    width: auto;
    padding: 6px 12px;
    margin-top: 0;
    font-size: 13px;
    background-color: var(--accent);
    color: #fff !important;
    text-decoration: none;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    vertical-align: middle;
}

.small-btn:hover {
    background-color: var(--accent-dark);
}

.actions-cell {
    display: flex;
    gap: 6px;
    align-items: center;
    white-space: nowrap;
}

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

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

.print-btn {
    background-color: var(--blue);
    margin-top: 10px;
}

.print-btn:hover {
    background-color: var(--blue-dark);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 15px;
}

.align-end {
    display: flex;
    align-items: flex-end;
}

.inline-form {
    display: inline;
}

.input-group {
    display: flex;
    gap: 10px;
}

.input-group input {
    flex: 2;
}

.input-group select {
    flex: 1;
}

.result {
    margin-top: 20px;
    padding: 15px;
    background-color: var(--internal-bg);
    border-left: 5px solid var(--internal-border);
    border-radius: 4px;
    color: var(--text);
}

.result h3 {
    margin-top: 0;
    border-bottom: none;
    color: var(--internal-text);
}

.live-preview {
    min-height: 24px;
    margin-top: 15px;
    font-size: 15px;
}

.live-hint {
    color: var(--text-muted);
    font-size: 12px;
}

.success-msg {
    background-color: var(--success-bg);
    color: var(--success-text);
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
    border: 1px solid var(--success-border);
}

.error-msg {
    background-color: var(--error-bg);
    color: var(--error-text);
    padding: 10px;
    border-radius: 4px;
    text-align: center;
    margin-bottom: 20px;
    border: 1px solid var(--error-border);
}

/* --- Navigation --- */
.main-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

.main-nav a {
    text-decoration: none;
    color: var(--text-muted);
    padding: 6px 10px;
    border-radius: 4px;
    font-weight: bold;
    font-size: 14px;
}

.main-nav a.active, .main-nav a:hover {
    background-color: var(--accent);
    color: #fff;
}

.main-nav .logout-link {
    margin-left: auto;
}

.dark-toggle {
    width: auto;
    margin: 0;
    padding: 6px 10px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 16px;
}

.dark-toggle:hover {
    background: var(--border);
}

.nav-link {
    display: block;
    text-align: center;
    margin-top: 20px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: bold;
}

.nav-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* --- Angebot / Offer Box --- */
.offer-box {
    background: var(--card-bg);
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-top: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    color: #222;
}

.offer-box, .offer-box * {
    color: #222;
}

.offer-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    font-size: 14px;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.offer-meta {
    text-align: right;
}

.offer-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 15px;
}

.offer-table td, .offer-table th {
    padding: 8px 6px;
    border-bottom: 1px solid #eee;
    text-align: left;
}

.offer-table tr td:last-child,
.offer-table tr th:last-child {
    text-align: right;
}

.price-box {
    margin-top: 25px;
    padding: 20px;
    background-color: #f8f9fa;
    border-left: 5px solid var(--accent);
    border-radius: 4px;
}

.price-label {
    font-size: 1.05em;
}

.price-value {
    font-size: 1.7em;
    color: #2e7d32;
    font-weight: bold;
}

.vat-line {
    margin-top: 8px;
    font-size: 0.95em;
    color: #555;
}

.vat-total {
    margin-top: 6px;
    font-size: 1.1em;
}

.offer-footnote {
    margin-top: 20px;
    font-size: 12px;
    color: #777;
}

/* --- Verlauf --- */
.table-scroll {
    overflow-x: auto;
}

.history-table {
    font-size: 13px;
}

.history-table th {
    background-color: var(--bg);
}

/* --- Print (Strg+P) --- */
@media print {
    body {
        background: #fff;
        padding: 20mm;
    }
    form, .main-nav, button, .nav-link, .result {
        display: none !important;
    }
}

/* --- Mobile --- */
@media (max-width: 600px) {
    .page, .page-wide {
        max-width: 100%;
        margin: 0;
        border-radius: 0;
        padding: 16px;
    }
    .form-grid {
        grid-template-columns: 1fr;
    }
    .offer-header {
        flex-direction: column;
    }
    .offer-meta {
        text-align: left;
    }
    body {
        padding: 0;
    }
}