/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #f5f5f0;
    --bg-card: #ffffff;
    --bg-input: #ffffff;
    --text: #1a1a1a;
    --text-muted: #6b6b6b;
    --text-hint: #999;
    --border: #e0ddd5;
    --border-focus: #3a3a3a;
    --accent: #d4a017;
    --accent-hover: #b8890f;
    --accent-light: #fdf6e3;
    --danger: #c0392b;
    --danger-hover: #a93226;
    --success-bg: #edf7ed;
    --success-text: #2d6a2d;
    --error-bg: #fdecea;
    --error-text: #922;
    --info-bg: #eef3fa;
    --info-text: #2a5a8a;
    --radius: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow: 0 2px 8px rgba(0,0,0,.08);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    --transition: 150ms ease;
}

html { font-size: 16px; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

/* === Navbar === */
.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .75rem 1.5rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -.02em;
}

.nav-links { display: flex; gap: .5rem; align-items: center; }

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: .875rem;
    padding: .4rem .75rem;
    border-radius: var(--radius);
    transition: all var(--transition);
}
.nav-link:hover { color: var(--text); background: var(--bg); }
.nav-link.active { color: var(--text); font-weight: 600; background: var(--bg); }
.nav-logout { color: var(--danger); }
.nav-logout:hover { background: var(--error-bg); }

/* === Container === */
.container {
    max-width: 860px;
    margin: 0 auto;
    padding: 1.5rem 1rem;
}

/* === Flash Messages === */
.flash {
    padding: .75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: .9rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .5rem;
}
.flash-success { background: var(--success-bg); color: var(--success-text); }
.flash-error   { background: var(--error-bg);   color: var(--error-text); }
.flash-info    { background: var(--info-bg);     color: var(--info-text); }
.flash-close {
    background: none; border: none; font-size: 1.25rem;
    cursor: pointer; color: inherit; opacity: .6;
    padding: 0; line-height: 1;
}
.flash-close:hover { opacity: 1; }

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    gap: 1rem;
}
.page-header h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -.03em;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .4rem;
    padding: .6rem 1.2rem;
    font-size: .9rem;
    font-weight: 600;
    font-family: inherit;
    border: 1px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    white-space: nowrap;
}
.btn-sm { padding: .4rem .8rem; font-size: .8rem; }
.btn-full { width: 100%; }

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

.btn-secondary {
    background: var(--bg-card);
    color: var(--text);
    border-color: var(--border);
}
.btn-secondary:hover { border-color: var(--border-focus); }

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
}
.btn-ghost:hover { color: var(--text); background: var(--bg); }

.btn-danger {
    background: transparent;
    color: var(--danger);
    border-color: var(--danger);
}
.btn-danger:hover { background: var(--danger); color: #fff; }

/* === Forms === */
.form-group {
    margin-bottom: 1.25rem;
}
.form-group label {
    display: block;
    font-size: .85rem;
    font-weight: 600;
    margin-bottom: .35rem;
    color: var(--text);
}

input[type="text"],
input[type="password"],
textarea {
    width: 100%;
    padding: .65rem .85rem;
    font-size: .95rem;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-input);
    color: var(--text);
    transition: border-color var(--transition);
}
input:focus, textarea:focus {
    outline: none;
    border-color: var(--border-focus);
}
textarea { resize: vertical; }

.required { color: var(--danger); }
.optional { color: var(--text-hint); font-weight: 400; }

/* === Login === */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80vh;
}
.login-card {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 380px;
}
.login-card h1 {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: .25rem;
}
.login-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: .9rem;
    margin-bottom: 1.5rem;
}

/* === Upload Zone === */
.upload-form {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.upload-zone.drag-over {
    border-color: var(--accent);
    background: var(--accent-light);
}

.upload-zone-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
}
.upload-icon { font-size: 2.5rem; }
.upload-text { font-weight: 600; color: var(--text); }
.upload-hint { font-size: .8rem; color: var(--text-hint); }
.upload-buttons {
    display: flex;
    gap: .5rem;
    margin-top: .75rem;
    flex-wrap: wrap;
    justify-content: center;
}

.upload-preview {
    position: relative;
    width: 100%;
}
.upload-preview img {
    max-width: 100%;
    max-height: 300px;
    border-radius: var(--radius);
    object-fit: contain;
}
.btn-remove {
    position: absolute;
    top: .5rem;
    right: .5rem;
    background: rgba(0,0,0,.6);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition);
}
.btn-remove:hover { background: var(--danger); }

/* === Search === */
.search-bar {
    display: flex;
    gap: .5rem;
    margin-bottom: 1rem;
}
.search-input {
    flex: 1;
    padding: .5rem .85rem;
    font-size: .9rem;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    color: var(--text);
}
.search-input:focus { outline: none; border-color: var(--border-focus); }
.search-info {
    font-size: .85rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* === Belege Grid === */
.belege-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}

.beleg-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: inherit;
    transition: box-shadow var(--transition), transform var(--transition);
}
.beleg-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}

.beleg-card-img {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--bg);
}
.beleg-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition);
}
.beleg-card:hover .beleg-card-img img {
    transform: scale(1.03);
}

.beleg-card-body { padding: .85rem; }
.beleg-card-title {
    font-size: .95rem;
    font-weight: 600;
    margin-bottom: .2rem;
}
.beleg-card-notes {
    font-size: .8rem;
    color: var(--text-muted);
    margin-bottom: .3rem;
}
.beleg-card-date {
    font-size: .75rem;
    color: var(--text-hint);
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}
.empty-icon { font-size: 3rem; margin-bottom: .75rem; }
.empty-state p { margin-bottom: 1rem; }

/* === Detail View === */
.detail-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.detail-image {
    background: var(--bg);
    display: flex;
    justify-content: center;
    padding: 1rem;
}
.detail-image img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
    border-radius: var(--radius);
}

.detail-body { padding: 1.5rem; }
.detail-body h1 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.detail-meta {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: .4rem 1rem;
    font-size: .9rem;
    margin-bottom: 1.5rem;
}
.detail-meta dt { font-weight: 600; color: var(--text-muted); }
.detail-meta dd { color: var(--text); }

.detail-actions {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}

.inline-form { display: inline; }

/* === Responsive === */
@media (max-width: 600px) {
    .navbar { padding: .6rem 1rem; }
    .nav-links { gap: .25rem; }
    .nav-link { padding: .3rem .5rem; font-size: .8rem; }
    .container { padding: 1rem .75rem; }
    .page-header h1 { font-size: 1.25rem; }
    .belege-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: .75rem; }
    .search-bar { flex-wrap: wrap; }
    .search-input { min-width: 100%; }
    .login-card { padding: 2rem 1.25rem; }
    .upload-zone { padding: 1.25rem; }
}

/* === OCR Scanning === */
.ocr-loading { display:flex; align-items:center; gap:.5rem; font-size:.9rem; color:var(--text-muted); padding:.75rem 0; }
.ocr-spinner { width:18px; height:18px; border:2px solid var(--border); border-top-color:var(--accent); border-radius:50%; animation:spin .8s linear infinite; }
@keyframes spin { to { transform:rotate(360deg); } }
.ocr-suggestions { display:flex; flex-wrap:wrap; gap:.5rem; margin-top:.4rem; }
.ocr-chip { display:flex; flex-direction:column; align-items:flex-start; gap:.15rem; padding:.5rem .75rem; background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); cursor:pointer; transition:all var(--transition); font-family:inherit; text-align:left; }
.ocr-chip:hover { border-color:var(--accent); background:var(--accent-light); }
.ocr-chip-applied { border-color:var(--accent); background:var(--accent-light); opacity:.7; }
.ocr-chip-label { font-size:.7rem; font-weight:600; color:var(--text-muted); text-transform:uppercase; letter-spacing:.03em; }
.ocr-chip-value { font-size:.9rem; font-weight:600; color:var(--text); font-family:monospace; }
.ocr-toggle { font-size:.8rem; color:var(--text-muted); cursor:pointer; }
.ocr-text { font-size:.8rem; font-family:monospace; background:var(--bg); border:1px solid var(--border); border-radius:var(--radius); padding:.75rem; margin-top:.4rem; white-space:pre-wrap; word-break:break-word; max-height:200px; overflow-y:auto; color:var(--text-muted); }
.ocr-none { font-size:.85rem; color:var(--text-hint); }
.ocr-error { font-size:.85rem; color:var(--error-text); }