@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { color-scheme: light only; background: #FFFFFF; }
:root {
    --white: #FFFFFF;
    --f0: #F5F5F5;
    --f1: #EBEBEB;
    --border: #E8E8E8;
    --text: #111111;
    --mid: #505050;
    --light: #A8A8A8;
    --blue: #1246F0;
    --blue-tint: #EAEFFE;
    --blue-soft: #F4F6FE;
    --green: #15803D;
    --green-tint: #DCFCE7;
    --amber: #B45309;
    --amber-tint: #FEF3C7;
    --red: #B91C1C;
    --red-tint: #FEE2E2;
    --f: 'Plus Jakarta Sans', sans-serif;
    font-size: 16.5px;
}

html { scroll-behavior: smooth; }
body {
    font-family: var(--f);
    font-weight: 400;
    color: var(--text);
    background: #FFFFFF;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
button { font-family: inherit; cursor: pointer; }

/* Nav */
nav.site-nav {
    position: sticky; top: 0; z-index: 100; height: 64px;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 5vw;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
.nav-logo { font-size: 1.05rem; font-weight: 500; letter-spacing: -.01em; color: var(--text); }
.nav-logo span { color: var(--blue); }
.nav-meta { font-size: .75rem; color: var(--light); margin-left: 1rem; }
.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links li { margin-left: 2.5rem; }
.nav-links li:first-child { margin-left: 0; }
.nav-links a { font-size: .82rem; color: var(--mid); transition: color .15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active { font-weight: 500; }

/* Container */
.container { max-width: 1280px; margin: 0 auto; padding: 56px 5vw 80px; }

/* Page Header */
.page-header { margin-bottom: 48px; display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.page-title { font-size: 2.25rem; font-weight: 400; letter-spacing: -.02em; color: var(--text); margin-bottom: 8px; line-height: 1.1; }
.page-sub { font-size: .92rem; color: var(--mid); }
.page-actions { display: flex; gap: 12px; }

/* Buttons */
.btn { background: var(--text); color: var(--white); padding: 11px 22px; font-size: .82rem; font-weight: 500; border: none; transition: background .15s; display: inline-block; text-align: center; letter-spacing: .005em; }
.btn:hover { background: #333; }
.btn-blue { background: var(--blue); }
.btn-blue:hover { background: #0F3DD0; }
.btn-block { display: block; width: 100%; }
.btn-secondary { background: transparent; color: var(--text); border: 1px solid var(--border); transition: border-color .15s, background .15s; }
.btn-secondary:hover { background: var(--f0); border-color: var(--text); }
.btn-quick { background: var(--white); color: var(--mid); border: 1px solid var(--border); padding: 8px 14px; font-size: .78rem; transition: all .15s; font-weight: 400; }
.btn-quick:hover { background: var(--f0); color: var(--text); border-color: var(--text); }
.btn-quick.active { background: var(--blue); color: var(--white); border-color: var(--blue); font-weight: 500; }

/* KPI Cards */
.kpi-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--border); background: var(--white); margin-bottom: 64px; }
.kpi-card { padding: 28px 32px; border-right: 1px solid var(--border); }
.kpi-card:last-child { border-right: none; }
.kpi-label { font-size: .68rem; text-transform: uppercase; letter-spacing: .14em; color: var(--light); font-weight: 500; margin-bottom: 14px; }
.kpi-value { font-size: 2rem; font-weight: 400; letter-spacing: -.025em; color: var(--text); line-height: 1; }
.kpi-value-blue { color: var(--blue); }
.kpi-sub { font-size: .72rem; color: var(--light); margin-top: 8px; }

/* Section */
.section-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 24px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.section-title { font-size: .72rem; text-transform: uppercase; letter-spacing: .16em; color: var(--text); font-weight: 500; }
.section-link { font-size: .78rem; color: var(--mid); transition: color .15s; }
.section-link:hover { color: var(--blue); }

/* Mandanten Grid */
.mandant-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0; border: 1px solid var(--border); background: var(--white); }
.mandant-card { padding: 28px 32px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); transition: background .15s; position: relative; display: flex; flex-direction: column; }
.mandant-card:nth-child(2n) { border-right: none; }
.mandant-card:nth-last-child(-n+2):nth-child(2n+1),
.mandant-card:nth-last-child(-n+2):nth-child(2n+1) ~ .mandant-card { border-bottom: none; }
.mandant-card:last-child { border-bottom: none; border-right: none; }
.mandant-card:hover { background: var(--f0); }
.mandant-card-head { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 12px; }
.mandant-name { font-size: 1.2rem; font-weight: 500; letter-spacing: -.01em; margin-bottom: 6px; color: var(--text); }
.mandant-firma { font-size: .8rem; color: var(--mid); line-height: 1.4; }
.mandant-badge { background: var(--blue-tint); color: var(--blue); font-size: .7rem; padding: 4px 11px; font-weight: 500; letter-spacing: .005em; white-space: nowrap; }
.mandant-letzte { font-size: .78rem; color: var(--mid); margin: 14px 0 22px; padding-top: 14px; border-top: 1px solid var(--border); flex-grow: 1; }
.mandant-letzte-label { color: var(--light); font-size: .68rem; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 6px; display: block; }
.mandant-letzte-value { font-size: .88rem; color: var(--text); }
.mandant-letzte-empty { color: var(--light); }
.mandant-actions { display: flex; gap: 8px; align-items: center; }
.mandant-actions .btn { flex-grow: 1; }

/* Form / Drag&Drop */
.form-wrap { background: var(--white); border: 1px solid var(--border); padding: 40px 48px; }
.form-section { margin-bottom: 36px; }
.form-section:last-child { margin-bottom: 0; }
.form-label { font-size: .68rem; text-transform: uppercase; letter-spacing: .16em; color: var(--text); font-weight: 500; margin-bottom: 14px; display: block; }
.form-label .step-num { color: var(--blue); margin-right: 8px; }

.drop-zone { border: 1.5px dashed var(--border); padding: 48px 32px; text-align: center; background: var(--white); cursor: pointer; transition: all .2s; }
.drop-zone:hover { border-color: var(--blue); background: var(--blue-soft); }
.drop-zone.dragover { border-color: var(--blue); background: var(--blue-tint); border-style: solid; }
.drop-zone.has-file { border-style: solid; border-color: var(--green); background: var(--green-tint); }
.drop-zone-icon { font-size: 2rem; color: var(--light); margin-bottom: 12px; line-height: 1; }
.drop-zone-text { font-size: 1rem; font-weight: 500; color: var(--text); margin-bottom: 6px; }
.drop-zone-sub { font-size: .82rem; color: var(--mid); }
.drop-zone-sub .link { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.drop-zone .filename { font-weight: 500; color: var(--green); }

input[type="text"], input[type="date"], input[type="number"] { padding: 11px 14px; border: 1px solid var(--border); font-size: .88rem; background: var(--white); font-family: inherit; color: var(--text); transition: border-color .15s; }
input[type="text"]:focus, input[type="date"]:focus, input[type="number"]:focus { outline: none; border-color: var(--blue); }

.date-row { display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.date-input-group { display: flex; gap: 10px; align-items: center; }
.date-input-group label { font-size: .82rem; color: var(--mid); font-weight: 400; }
.quick-buttons { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.zeitraum-info { font-size: .82rem; color: var(--blue); font-weight: 500; }

.form-submit-row { display: flex; justify-content: flex-end; margin-top: 40px; padding-top: 32px; border-top: 1px solid var(--border); }
.form-submit-row .btn { padding: 14px 32px; font-size: .88rem; }

/* Result */
.result-box { background: var(--white); border: 1px solid var(--green); border-left: 3px solid var(--green); padding: 28px 32px; margin-bottom: 24px; display: none; }
.result-box.show { display: block; }
.result-box.error { border-color: var(--red); border-left-color: var(--red); }
.result-title { font-size: 1.05rem; font-weight: 500; margin-bottom: 6px; color: var(--text); display: flex; align-items: center; gap: 10px; }
.result-title .status-dot { width: 8px; height: 8px; background: var(--green); display: inline-block; }
.result-box.error .result-title .status-dot { background: var(--red); }
.result-sub { font-size: .82rem; color: var(--mid); margin-bottom: 18px; }
.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; padding: 20px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.result-stat-label { font-size: .68rem; color: var(--light); text-transform: uppercase; letter-spacing: .14em; margin-bottom: 8px; font-weight: 500; }
.result-stat-value { font-size: 1.4rem; font-weight: 400; color: var(--text); letter-spacing: -.01em; line-height: 1.1; }
.result-stat-value.blue { color: var(--blue); }
.result-actions { display: flex; gap: 10px; }

/* Tabelle */
.table-wrap { background: var(--white); border: 1px solid var(--border); overflow: hidden; }
table.data-table { width: 100%; border-collapse: collapse; }
table.data-table th { text-align: left; font-size: .68rem; text-transform: uppercase; letter-spacing: .14em; color: var(--light); font-weight: 500; padding: 16px 24px; background: var(--f0); border-bottom: 1px solid var(--border); }
table.data-table td { padding: 16px 24px; border-bottom: 1px solid var(--border); font-size: .85rem; color: var(--text); vertical-align: middle; }
table.data-table tr:last-child td { border-bottom: none; }
table.data-table tr:hover td { background: var(--f0); }
table.data-table .rechnungsnr { font-family: 'IBM Plex Mono', 'Consolas', monospace; color: var(--light); font-size: .76rem; letter-spacing: -.01em; }
table.data-table .num-cell { text-align: right; font-variant-numeric: tabular-nums; }
table.data-table .num-cell.emphasis { color: var(--text); font-weight: 500; }
table.data-table .links a { color: var(--blue); font-size: .8rem; margin-right: 16px; transition: opacity .15s; }
table.data-table .links a:hover { opacity: .65; }
table.data-table th code, table.data-table td code { font-family: 'IBM Plex Mono', 'Consolas', monospace; font-size: .76rem; color: var(--mid); }

/* Detail Header */
.detail-header { margin-bottom: 56px; padding-bottom: 32px; border-bottom: 1px solid var(--border); }
.detail-back { display: inline-flex; align-items: center; gap: 6px; font-size: .8rem; color: var(--mid); margin-bottom: 24px; transition: color .15s; }
.detail-back:hover { color: var(--text); }
.detail-row { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; flex-wrap: wrap; }
.detail-eyebrow { font-size: .68rem; text-transform: uppercase; letter-spacing: .16em; color: var(--blue); font-weight: 500; margin-bottom: 12px; }
.detail-title { font-size: 2.4rem; font-weight: 400; letter-spacing: -.025em; line-height: 1.05; margin-bottom: 12px; color: var(--text); }
.detail-meta { font-size: .9rem; color: var(--mid); }
.detail-meta .pct-pill { background: var(--blue-tint); color: var(--blue); padding: 3px 10px; font-size: .78rem; font-weight: 500; margin-left: 10px; }

/* Misc */
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.4); border-top-color: var(--white); border-radius: 50%; animation: spin 0.7s linear infinite; vertical-align: -2px; margin-right: 8px; }
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { text-align: center; padding: 80px 20px; }
.empty-state-title { font-size: 1.1rem; color: var(--text); margin-bottom: 8px; }
.empty-state-sub { font-size: .88rem; color: var(--mid); }
.empty-state-sub a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }

.pill { display: inline-block; padding: 3px 9px; font-size: .72rem; font-weight: 500; letter-spacing: .005em; }
.pill-blue { background: var(--blue-tint); color: var(--blue); }
.pill-green { background: var(--green-tint); color: var(--green); }

/* Responsive */
@media (max-width: 920px) {
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .kpi-card { border-bottom: 1px solid var(--border); }
    .kpi-card:nth-child(2) { border-right: none; }
    .kpi-card:nth-last-child(-n+2) { border-bottom: none; }
    .mandant-grid { grid-template-columns: 1fr; }
    .mandant-card { border-right: none; border-bottom: 1px solid var(--border) !important; }
    .mandant-card:last-child { border-bottom: none !important; }
    .form-wrap { padding: 28px 24px; }
    .result-stats { grid-template-columns: 1fr; gap: 18px; }
    .page-title { font-size: 1.7rem; }
    .detail-title { font-size: 1.8rem; }
    .container { padding: 32px 5vw 60px; }
}
@media (max-width: 640px) {
    .nav-links { display: none; }
    .nav-meta { display: none; }
    .detail-row { flex-direction: column; align-items: flex-start; }
    table.data-table { font-size: .8rem; }
    table.data-table th, table.data-table td { padding: 12px 16px; }
}

/* ============================================================
   Login
   ============================================================ */
.login-wrap { min-height: 100vh; display: flex; flex-direction: column;
    align-items: center; justify-content: center; padding: 24px; background: var(--f0); }
.login-card { background: var(--white); border: 1px solid var(--border);
    padding: 48px 44px; width: 100%; max-width: 400px; }
.login-brand { font-size: 1.5rem; font-weight: 500; letter-spacing: -.01em; color: var(--text); }
.login-brand span { color: var(--blue); }
.login-sub { font-size: .82rem; color: var(--mid); margin: 6px 0 32px; }
.login-form .form-label { margin-bottom: 8px; }
.login-form input { width: 100%; }
.login-error { background: var(--red-tint); color: var(--red); font-size: .82rem;
    padding: 12px 16px; margin-bottom: 24px; border-left: 3px solid var(--red); }
.login-footer { font-size: .74rem; color: var(--light); margin-top: 28px; }

/* ============================================================
   Mandant-Editor
   ============================================================ */
.editor-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.editor-full { grid-column: 1 / -1; }
.editor-label { font-size: .78rem; color: var(--text); font-weight: 500; margin-bottom: 8px; display: block; }
.editor-hint { font-size: .74rem; color: var(--light); margin-top: 6px; line-height: 1.5; }
.editor-hint code { font-family: 'IBM Plex Mono', 'Consolas', monospace; background: var(--f0); padding: 1px 5px; }
.editor-grid input[type="text"], .editor-grid input[type="number"] { width: 100%; }
.radio-row { display: flex; flex-direction: column; gap: 12px; }
.radio-option { display: flex; align-items: flex-start; gap: 10px; font-size: .84rem;
    color: var(--mid); cursor: pointer; padding: 12px 16px; border: 1px solid var(--border); transition: border-color .15s; }
.radio-option:hover { border-color: var(--blue); }
.radio-option input { margin-top: 3px; }
.radio-option strong { color: var(--text); font-weight: 500; }

@media (max-width: 640px) {
    .editor-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Nutzerverwaltung – Formularfelder ergänzen
   ============================================================ */
input[type="email"], input[type="password"], select {
    padding: 11px 14px; border: 1px solid var(--border); font-size: .88rem;
    background: var(--white); font-family: inherit; color: var(--text); transition: border-color .15s;
}
input[type="email"]:focus, input[type="password"]:focus, select:focus {
    outline: none; border-color: var(--blue);
}
select { width: 100%; appearance: none; -webkit-appearance: none; cursor: pointer;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'><path d='M2 4l4 4 4-4' stroke='%23505050' stroke-width='1.5' fill='none'/></svg>");
    background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }
.editor-grid input[type="email"], .editor-grid input[type="password"], .editor-grid select { width: 100%; }