/* Schulden-Übersicht — Modern Dark/Light */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg:           #0a0d14;
    --bg-elev:      #11151f;
    --bg-card:      #161b29;
    --bg-hover:     #1c2233;
    --bg-input:     #0d1018;
    --bg-grad:      radial-gradient(ellipse at top, #1f1408 0%, #0a0d14 55%);

    --border:        #1f2535;
    --border-strong: #2a3145;

    --text:        #e6e9ef;
    --text-soft:   #b1b8c5;
    --text-muted:  #6b7280;
    --text-dim:    #4a5060;

    --accent:        #fb923c;       /* amber-500 */
    --accent-hover:  #fdba74;
    --accent-soft:   rgba(251, 146, 60, 0.10);
    --accent-border: rgba(251, 146, 60, 0.30);
    --accent2:       #f43f5e;
    --accent-grad:   linear-gradient(135deg, #fb923c 0%, #f43f5e 100%);

    --success:  #4ade80;
    --warning:  #fbbf24;
    --danger:   #ef4444;
    --info:     #60a5fa;

    --shadow:     0 4px 16px rgba(0,0,0,0.35);
    --shadow-lg:  0 16px 48px rgba(0,0,0,0.55);
    --shadow-glow:0 0 32px rgba(251, 146, 60, 0.25);

    --r-sm: 6px;
    --r:    10px;
    --r-lg: 14px;
    --r-xl: 20px;

    color-scheme: dark;
}

[data-theme="light"] {
    --bg:           #f8f9fc;
    --bg-elev:      #ffffff;
    --bg-card:      #ffffff;
    --bg-hover:     #f1f3f9;
    --bg-input:     #ffffff;
    --bg-grad:      radial-gradient(ellipse at top, #fff4e6 0%, #f8f9fc 60%);

    --border:        #e6e8ee;
    --border-strong: #d0d4dd;

    --text:        #14171f;
    --text-soft:   #3f4658;
    --text-muted:  #6b7280;
    --text-dim:    #9aa1b2;

    --accent:        #d97706;
    --accent-hover:  #b45309;
    --accent-soft:   rgba(217, 119, 6, 0.08);
    --accent-border: rgba(217, 119, 6, 0.30);

    --shadow:     0 4px 16px rgba(20, 30, 60, 0.08);
    --shadow-lg:  0 16px 48px rgba(20, 30, 60, 0.12);
    --shadow-glow:0 0 32px rgba(217, 119, 6, 0.20);

    color-scheme: light;
}

html { scroll-behavior: smooth; }
body {
    background: var(--bg-grad);
    background-attachment: fixed;
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
button { font-family: inherit; }

/* ============================================================
   Topbar
   ============================================================ */
.topbar {
    background: rgba(11, 14, 22, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 100;
}
[data-theme="light"] .topbar { background: rgba(255, 255, 255, 0.85); }

.topbar-inner {
    max-width: 1200px; margin: 0 auto;
    padding: 14px 24px;
    display: flex; align-items: center; gap: 24px;
}
.topbar-brand {
    display: inline-flex; align-items: center; gap: 10px;
    font-size: 17px; font-weight: 800; letter-spacing: -0.01em;
    color: var(--text);
}
.topbar-brand-icon {
    width: 32px; height: 32px;
    background: var(--accent-grad);
    border-radius: 9px;
    display: flex; align-items: center; justify-content: center;
    font-size: 16px;
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.topbar-nav { display: flex; gap: 4px; flex: 1; }
.nav-link {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 14px;
    border-radius: var(--r-sm);
    font-size: 14px; font-weight: 500;
    color: var(--text-soft);
    transition: all 0.15s;
}
.nav-link:hover { background: var(--bg-hover); color: var(--text); }
.nav-link.active { background: var(--accent-soft); color: var(--accent); }
.topbar-end { display: flex; align-items: center; gap: 10px; }

.btn-icon {
    width: 36px; height: 36px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--text-soft);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.15s;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text); }

.theme-toggle .icon-sun  { display: none; }
.theme-toggle .icon-moon { display: inline-block; }
[data-theme="light"] .theme-toggle .icon-sun  { display: inline-block; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }

.user-chip {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 4px 14px 4px 4px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 999px;
    color: inherit;
}
.user-chip:hover { background: var(--bg-hover); color: var(--text); border-color: var(--accent-border); }
.user-avatar {
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--accent-grad);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 700; color: #fff;
}
.user-name { font-size: 13px; font-weight: 500; color: var(--text-soft); }

.btn-burger {
    display: none; flex-direction: column; gap: 4px;
    width: 36px; height: 36px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    cursor: pointer;
    align-items: center; justify-content: center;
}
.btn-burger span { width: 16px; height: 2px; background: var(--text-soft); border-radius: 2px; }

/* ============================================================
   Layout
   ============================================================ */
.container { max-width: 1200px; margin: 0 auto; padding: 32px 24px; }
.page-header { margin-bottom: 26px; display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.page-header h1 { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; }
.page-header .subtitle { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: var(--r-sm);
    font-size: 14px; font-weight: 600;
    cursor: pointer;
    transition: all 0.18s;
    text-decoration: none;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: var(--accent-grad);
    color: #fff !important;
    box-shadow: 0 4px 14px rgba(251, 146, 60, 0.30);
}
.btn-primary:hover { box-shadow: 0 6px 20px rgba(251, 146, 60, 0.50); }
.btn-ghost {
    background: var(--bg-elev);
    border-color: var(--border);
    color: var(--text-soft);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text); border-color: var(--border-strong); }
.btn-sm { padding: 7px 13px; font-size: 13px; }
.btn-danger { color: var(--danger) !important; border-color: rgba(239,68,68,0.30) !important; background: transparent; }
.btn-danger:hover { background: rgba(239,68,68,0.10) !important; }
.btn-success {
    background: var(--success);
    color: #082015 !important;
}
.btn-success:hover { background: #6ee7a3; }

/* ============================================================
   Cards
   ============================================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 22px;
}
.section-title { font-size: 16px; font-weight: 800; margin-bottom: 14px; }

/* ============================================================
   KPI-Grid
   ============================================================ */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}
.kpi {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    padding: 22px;
}
.kpi-label {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 8px;
}
.kpi-value {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
}
.kpi-value.danger { color: var(--danger); }
.kpi-value.success { color: var(--success); }
.kpi-value.accent {
    background: var(--accent-grad);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.kpi-sub { font-size: 12px; color: var(--text-muted); margin-top: 6px; }

/* ============================================================
   Tabellen
   ============================================================ */
.table-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    overflow: hidden;
}
table { width: 100%; border-collapse: collapse; font-size: 14px; }
thead tr { background: var(--bg-elev); }
th {
    padding: 14px 18px;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
tbody tr { border-top: 1px solid var(--border); transition: background 0.12s; }
tbody tr:hover { background: var(--bg-hover); }
td { padding: 14px 18px; vertical-align: middle; }

.money { font-weight: 700; }
.money.debt    { color: var(--danger); }
.money.payment { color: var(--success); }
.money.zero    { color: var(--success); }
.money.outstanding { color: var(--accent); }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.badge-debt    { background: rgba(239,68,68,0.10);  color: var(--danger);  border: 1px solid rgba(239,68,68,0.30); }
.badge-payment { background: rgba(74,222,128,0.10); color: var(--success); border: 1px solid rgba(74,222,128,0.30); }
.badge-pending { background: rgba(251,191,36,0.10); color: var(--warning); border: 1px solid rgba(251,191,36,0.30); }
.badge-active  { background: rgba(74,222,128,0.10); color: var(--success); border: 1px solid rgba(74,222,128,0.30); }
.badge-admin   { background: var(--accent-grad); color: #fff; }

/* ============================================================
   Forms
   ============================================================ */
.field-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 6px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.field-input, .field-textarea, .field-select {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--r-sm);
    padding: 11px 14px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.15s;
}
.field-input:focus, .field-textarea:focus, .field-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}
.field-textarea { resize: vertical; min-height: 100px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-stack { display: flex; flex-direction: column; gap: 14px; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: 16px; height: 16px; accent-color: var(--accent); }
.checkbox-row label { font-size: 14px; }

/* Auth-Pages */
.auth-page {
    min-height: calc(100vh - 100px);
    display: flex; align-items: center; justify-content: center;
    padding: 40px 20px;
}
.auth-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 40px 36px;
    width: 100%; max-width: 440px;
    box-shadow: var(--shadow-lg);
}
.auth-box h1 { font-size: 26px; font-weight: 800; letter-spacing: -0.01em; }
.auth-box .subtitle { font-size: 14px; color: var(--text-muted); margin: 4px 0 20px; }
.auth-box form { display: flex; flex-direction: column; gap: 14px; }
.auth-footer { text-align: center; margin-top: 16px; font-size: 13px; color: var(--text-muted); }

.alert-error {
    background: rgba(239,68,68,0.10);
    border: 1px solid rgba(239,68,68,0.30);
    color: var(--danger);
    border-radius: var(--r-sm);
    padding: 12px 14px;
    font-size: 13px;
    margin-bottom: 12px;
}
.alert-success {
    background: rgba(74,222,128,0.10);
    border: 1px solid rgba(74,222,128,0.30);
    color: var(--success);
    border-radius: var(--r-sm);
    padding: 12px 14px;
    font-size: 13px;
    margin-bottom: 12px;
}
.alert-info {
    background: rgba(96,165,250,0.10);
    border: 1px solid rgba(96,165,250,0.30);
    color: var(--info);
    border-radius: var(--r-sm);
    padding: 12px 14px;
    font-size: 13px;
    margin-bottom: 12px;
}

/* ============================================================
   Person Detail Big-Balance-Hero
   ============================================================ */
.balance-hero {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 32px 36px;
    margin-bottom: 22px;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 24px;
}
.balance-hero .label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 700;
    margin-bottom: 6px;
}
.balance-hero .amount {
    font-size: 52px;
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1;
}
.balance-hero .amount.outstanding {
    background: var(--accent-grad);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}
.balance-hero .amount.zero { color: var(--success); }
.balance-hero .breakdown { display: flex; gap: 28px; margin-top: 12px; }
.balance-hero .breakdown div { font-size: 13px; color: var(--text-muted); }
.balance-hero .breakdown strong { display: block; font-size: 18px; color: var(--text); font-weight: 700; margin-top: 2px; }
.balance-hero .breakdown .debt strong { color: var(--danger); }
.balance-hero .breakdown .paid strong { color: var(--success); }
.balance-hero .actions { display: flex; gap: 8px; flex-wrap: wrap; }
@media (max-width: 700px) {
    .balance-hero { grid-template-columns: 1fr; }
    .balance-hero .amount { font-size: 40px; }
}

/* ============================================================
   Modal
   ============================================================ */
.modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    display: flex; align-items: center; justify-content: center;
    z-index: 200;
    padding: 20px;
    animation: fade-in 0.15s ease-out;
}
[data-theme="light"] .modal-backdrop { background: rgba(20,30,60,0.30); }
.modal-backdrop.hidden { display: none; }
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: var(--r-xl);
    padding: 28px 30px;
    width: 100%; max-width: 540px;
    max-height: 90vh; overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: pop-in 0.18s ease-out;
}
.modal h2 { font-size: 20px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 18px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 18px; flex-wrap: wrap; }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(8px) scale(0.97); } to { opacity: 1; transform: translateY(0) scale(1); } }

/* Empty States */
.empty-state {
    padding: 60px 20px;
    text-align: center;
    background: var(--bg-card);
    border: 1px dashed var(--border-strong);
    border-radius: var(--r-xl);
}
.empty-state .icon { font-size: 50px; margin-bottom: 14px; }
.empty-state h3 { font-size: 18px; font-weight: 700; margin-bottom: 6px; }
.empty-state p { color: var(--text-muted); font-size: 14px; }

/* Footer */
.footer {
    margin-top: 60px;
    padding: 24px;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 12px;
    color: var(--text-muted);
}

/* Toast */
.toast-stack { position: fixed; bottom: 24px; right: 24px; z-index: 250; display: flex; flex-direction: column; gap: 10px; max-width: 360px; }
.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-left-width: 4px;
    border-radius: var(--r);
    padding: 12px 16px;
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    display: flex; align-items: center; gap: 10px;
    animation: toast-in 0.22s ease-out;
}
.toast.toast-success { border-left-color: var(--success); }
.toast.toast-error   { border-left-color: var(--danger); }
.toast.toast-info    { border-left-color: var(--accent); }
@keyframes toast-in { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* Tabs */
.tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }

/* Mobile */
@media (max-width: 800px) {
    .topbar-inner { gap: 12px; padding: 12px 16px; }
    .topbar-nav {
        position: absolute; top: 100%; left: 0; right: 0;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: 8px;
        display: none;
    }
    .topbar-nav.mobile-open { display: flex; }
    .btn-burger { display: inline-flex; }
    .user-name { display: none; }
    .container { padding: 24px 16px; }
    .field-row { grid-template-columns: 1fr; }
    .toast-stack { left: 14px; right: 14px; bottom: 14px; max-width: none; }
}