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

/* ============================================================
   THEME-VARIABLEN  —  Standard: Dark
   ============================================================ */
:root {
    --bg:          #0e1016;
    --bg-elevated: #12151f;
    --bg-card:     #171b26;
    --bg-hover:    #1f2433;
    --bg-input:    #0e1016;
    --border:      #2a3140;
    --border-soft: #222838;
    --text:        #e6e8ee;
    --text-muted:  #8b92a3;
    --accent:      #4f8ef7;
    --accent-2:    #6aa6ff;
    --accent-soft: rgba(79, 142, 247, 0.14);
    --danger:      #e74c3c;
    --success:     #2ecc71;
    --warning:     #f0b429;
    --shadow-sm:   0 1px 2px rgba(0,0,0,.35);
    --shadow-md:   0 6px 20px rgba(0,0,0,.40);
    --shadow-lg:   0 16px 48px rgba(0,0,0,.50);
    --ring:        rgba(79, 142, 247, 0.35);
    --topbar-bg:   rgba(18, 21, 31, 0.85);
    color-scheme: dark;
}

/* ============================================================
   LIGHT THEME
   ============================================================ */
html[data-theme="light"] {
    --bg:          #f3f5fb;
    --bg-elevated: #ffffff;
    --bg-card:     #ffffff;
    --bg-hover:    #eef2fb;
    --bg-input:    #f7f9fd;
    --border:      #e2e7f1;
    --border-soft: #edf0f7;
    --text:        #1b2230;
    --text-muted:  #6b7384;
    --accent:      #2f6fe0;
    --accent-2:    #4f8ef7;
    --accent-soft: rgba(47, 111, 224, 0.10);
    --danger:      #d9382b;
    --success:     #1fa861;
    --warning:     #c98a06;
    --shadow-sm:   0 1px 2px rgba(20,30,60,.06);
    --shadow-md:   0 6px 20px rgba(20,30,60,.08);
    --shadow-lg:   0 16px 48px rgba(20,30,60,.12);
    --ring:        rgba(47, 111, 224, 0.25);
    --topbar-bg:   rgba(255, 255, 255, 0.85);
    color-scheme: light;
}

html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    transition: background .25s ease, color .25s ease;
}

/* dezenter Hintergrund-Verlauf für etwas Tiefe */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: -1;
    background:
        radial-gradient(900px 500px at 100% -5%, var(--accent-soft), transparent 60%),
        radial-gradient(700px 400px at 0% 0%, var(--accent-soft), transparent 55%);
    opacity: .7;
}

/* ============================================================
   LOGIN
   ============================================================ */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 38px 34px;
    width: 100%;
    max-width: 390px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-top: 80px;
    box-shadow: var(--shadow-lg);
}
.login-logo { height: 44px; width: auto; align-self: flex-start; }
.login-box h1 { font-size: 19px; font-weight: 800; letter-spacing: -0.2px; }
.alert-error {
    background: color-mix(in srgb, var(--danger) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent);
    color: var(--danger);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 13px;
}

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
    background: var(--topbar-bg);
    backdrop-filter: saturate(160%) blur(12px);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 11px 22px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-left img { height: 32px; }
.topbar-left h1 { font-size: 15px; font-weight: 800; letter-spacing: -0.2px; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.user-badge {
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 5px 13px;
    font-size: 12px;
}

/* Theme-Umschalter */
.theme-toggle {
    background: var(--bg-hover);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 20px;
    width: 36px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    cursor: pointer;
    transition: transform .15s ease, background .15s ease, border-color .15s ease;
    line-height: 1;
}
.theme-toggle:hover { transform: translateY(-1px); border-color: var(--accent); }
.theme-toggle.floating {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 300;
    box-shadow: var(--shadow-md);
}

/* ============================================================
   MAIN
   ============================================================ */
.main {
    padding: 26px 24px 48px;
    max-width: 1400px;
    margin: 0 auto;
}

/* ============================================================
   STATS
   ============================================================ */
.stats {
    display: flex;
    gap: 14px;
    margin-bottom: 22px;
    flex-wrap: wrap;
}
.stat {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px 20px;
    flex: 1;
    min-width: 160px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: var(--shadow-sm);
    transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
    position: relative;
    overflow: hidden;
}
.stat::after {
    content: "";
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    opacity: .85;
}
.stat-problem::after   { background: var(--danger); }
.stat-aufgabe::after   { background: var(--warning); }
.stat-vorschlag::after { background: var(--success); }
.stat-done::after      { background: var(--accent); }
.stat:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.stat-icon { font-size: 24px; }
.stat-count { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; }
.stat-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .4px; }
.stat-problem .stat-count   { color: var(--danger); }
.stat-aufgabe .stat-count   { color: var(--warning); }
.stat-vorschlag .stat-count { color: var(--success); }
.stat-done .stat-count      { color: var(--accent); }

/* ============================================================
   TOOLBAR
   ============================================================ */
.toolbar {
    display: flex;
    gap: 10px;
    margin-bottom: 18px;
    align-items: center;
    flex-wrap: wrap;
}
.search-input {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 8px 13px;
    font-size: 13px;
    flex: 1;
    min-width: 160px;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--ring); }
.filter-select {
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 8px 11px;
    font-size: 13px;
    cursor: pointer;
    transition: border-color .15s ease;
}
.filter-select:hover { border-color: var(--accent); }
.filter-select:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--ring); }

/* ============================================================
   TABLE
   ============================================================ */
.table-wrap {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead tr { background: var(--bg-hover); }
th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
tbody tr {
    border-top: 1px solid var(--border-soft);
    transition: background 0.12s ease;
    cursor: pointer;
}
tbody tr:hover { background: var(--bg-hover); }
td { padding: 12px 16px; }
.td-muted { color: var(--text-muted); font-size: 12px; }
.td-sub { color: var(--text-muted); font-size: 12px; margin-top: 3px; }
.td-user { display: flex; align-items: center; gap: 8px; }
.avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 800;
    color: #fff;
    flex-shrink: 0;
}
.no-results {
    padding: 38px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

/* ============================================================
   BADGES
   ============================================================ */
.badge {
    display: inline-block;
    border-radius: 6px;
    padding: 3px 9px;
    font-size: 11px;
    font-weight: 700;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.badge-problem   { background: color-mix(in srgb, var(--danger) 18%, transparent);  color: var(--danger);  border-color: color-mix(in srgb, var(--danger) 45%, transparent); }
.badge-aufgabe   { background: color-mix(in srgb, var(--warning) 18%, transparent); color: var(--warning); border-color: color-mix(in srgb, var(--warning) 45%, transparent); }
.badge-vorschlag { background: color-mix(in srgb, var(--success) 18%, transparent); color: var(--success); border-color: color-mix(in srgb, var(--success) 45%, transparent); }

.prio {
    display: inline-block;
    border-radius: 6px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 700;
}
.prio-kritisch { background: color-mix(in srgb, #ff4444 20%, transparent); color: #ff5555; border: 1px solid color-mix(in srgb, #ff4444 50%, transparent); }
.prio-hoch     { background: color-mix(in srgb, #e67e22 20%, transparent); color: #e67e22; border: 1px solid color-mix(in srgb, #e67e22 50%, transparent); }
.prio-mittel   { background: color-mix(in srgb, var(--warning) 18%, transparent); color: var(--warning); border: 1px solid color-mix(in srgb, var(--warning) 45%, transparent); }
.prio-niedrig  { background: color-mix(in srgb, var(--success) 18%, transparent); color: var(--success); border: 1px solid color-mix(in srgb, var(--success) 45%, transparent); }

.status-badge {
    display: inline-block;
    border-radius: 6px;
    padding: 3px 9px;
    font-size: 11px;
    font-weight: 600;
}
.status-offen    { background: var(--bg-hover); color: var(--text-muted); border: 1px solid var(--border); }
.status-aktiv    { background: var(--accent-soft); color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.status-erledigt { background: color-mix(in srgb, var(--success) 16%, transparent); color: var(--success); border: 1px solid color-mix(in srgb, var(--success) 40%, transparent); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    border: none;
    border-radius: 8px;
    padding: 9px 17px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .12s ease, box-shadow .15s ease, opacity .15s ease, background .15s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    width: 100%;
    justify-content: center;
    box-shadow: 0 4px 14px var(--ring);
}
.btn-primary:hover { box-shadow: 0 6px 20px var(--ring); }
.btn-add {
    background: linear-gradient(135deg, var(--accent), var(--accent-2));
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 9px 17px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    box-shadow: 0 4px 14px var(--ring);
    transition: transform .12s ease, box-shadow .15s ease;
}
.btn-add:hover { transform: translateY(-1px); box-shadow: 0 6px 20px var(--ring); }
.btn-ghost {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 8px;
    padding: 7px 13px;
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn-ghost:hover { background: var(--bg-hover); border-color: var(--accent); color: var(--text); }
.btn-danger { color: var(--danger) !important; border-color: color-mix(in srgb, var(--danger) 45%, transparent) !important; }
.btn-danger:hover { background: color-mix(in srgb, var(--danger) 12%, transparent); }
.btn-logout {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    border-radius: 8px;
    padding: 6px 13px;
    font-size: 12px;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
}
.btn-logout:hover { background: var(--bg-hover); border-color: var(--danger); color: var(--danger); }

/* ============================================================
   FIELDS
   ============================================================ */
.field-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 5px;
    font-weight: 500;
}
.field-input {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: 8px;
    padding: 9px 13px;
    font-size: 13px;
    font-family: inherit;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.field-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--ring); }
.field-input::placeholder { color: var(--text-muted); }
textarea.field-input { resize: vertical; min-height: 80px; }
select.field-input { cursor: pointer; }

/* ============================================================
   MODAL
   ============================================================ */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    animation: backdrop-in .15s ease;
}
@keyframes backdrop-in { from { opacity: 0; } to { opacity: 1; } }
.modal-backdrop.hidden { display: none; }
.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px;
    width: 100%;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modal-in .18s cubic-bezier(.2,.7,.3,1);
}
@keyframes modal-in { from { opacity: 0; transform: translateY(12px) scale(.98); } to { opacity: 1; transform: none; } }
.modal h2 { font-size: 17px; font-weight: 800; letter-spacing: -0.2px; }
.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin-top: 4px;
    flex-wrap: wrap;
}
.modal-row { display: flex; gap: 12px; }
.modal-row > div { flex: 1; }

/* ============================================================
   ADMIN
   ============================================================ */
.admin-main { padding: 26px 24px 48px; max-width: 940px; margin: 0 auto; }
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
.section-header h3 { font-size: 17px; font-weight: 800; letter-spacing: -0.2px; }

/* ============================================================
   MOBILE
   ============================================================ */
@media (max-width: 700px) {
    .topbar { padding: 9px 13px; }
    .topbar-left h1 { font-size: 13px; }
    .topbar-right .user-badge { display: none; }

    .main, .admin-main { padding: 16px 12px 36px; }

    .stat { min-width: 130px; padding: 13px 15px; gap: 10px; }
    .stat-icon { font-size: 20px; }
    .stat-count { font-size: 20px; }

    .toolbar { gap: 7px; }
    .toolbar > * { flex: 1 1 auto; }
    .search-input { min-width: 140px; }

    .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { min-width: 680px; }

    .modal {
        padding: 22px;
        border-radius: 14px;
        max-width: 100%;
        max-height: 92vh;
        margin: 12px;
        width: calc(100% - 24px);
    }
    .modal-actions { flex-direction: column-reverse; gap: 8px; }
    .modal-actions > button,
    .modal-actions > .btn,
    .modal-actions > .btn-ghost {
        width: 100% !important;
        margin: 0 !important;
        justify-content: center;
    }
    .modal-row { flex-direction: column; gap: 14px; }
}