:root {
    --navy: #0c2340;
    --navy-light: #1a3a5c;
    --gold: #c5a572;
    --gold-light: #dbc89a;
    --bg: #f0f2f5;
    --surface: #ffffff;
    --text: #1a1a2e;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --success: #059669;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #0284c7;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.04);
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

/* Login */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 50%, #2d4a6f 100%);
}

.login-container { width: 100%; max-width: 420px; padding: 20px; }

.login-card {
    background: var(--surface);
    border-radius: 12px;
    padding: 40px 36px;
    box-shadow: 0 20px 60px rgba(0,0,0,.3);
}

.login-brand { text-align: center; margin-bottom: 32px; }
.login-brand h1 { font-size: 2.2rem; color: var(--navy); letter-spacing: 4px; font-weight: 700; }
.login-brand p { color: var(--gold); font-style: italic; margin-top: 4px; }
.login-subtitle { display: block; font-size: .75rem; color: var(--text-muted); margin-top: 8px; text-transform: uppercase; letter-spacing: 1px; }

.login-form .form-group { margin-bottom: 18px; }
.login-footer { text-align: center; margin-top: 24px; color: var(--text-muted); }

/* App Shell */
.app-shell { display: flex; min-height: 100vh; }

.sidebar {
    width: 260px;
    background: var(--navy);
    color: #fff;
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
}

.brand { padding: 24px 20px; border-bottom: 1px solid rgba(255,255,255,.1); }
.brand-logo { font-size: 1.4rem; font-weight: 700; letter-spacing: 3px; color: var(--gold); }
.brand-tagline { font-size: .7rem; color: rgba(255,255,255,.6); font-style: italic; margin-top: 4px; }

.nav-menu { flex: 1; padding: 12px 0; overflow-y: auto; }
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 11px 20px;
    color: rgba(255,255,255,.75);
    text-decoration: none;
    font-size: .9rem;
    transition: all .15s;
    border-left: 3px solid transparent;
}
.nav-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-item.active { background: rgba(197,165,114,.15); color: var(--gold-light); border-left-color: var(--gold); }
.nav-icon { opacity: .7; width: 18px; text-align: center; }

.sidebar-footer { padding: 16px 20px; border-top: 1px solid rgba(255,255,255,.1); }
.user-chip { margin-bottom: 10px; }
.user-chip strong { display: block; font-size: .85rem; }
.user-chip small { color: rgba(255,255,255,.5); font-size: .75rem; }

.main-content { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar {
    background: var(--surface);
    padding: 20px 32px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar h1 { font-size: 1.4rem; font-weight: 600; color: var(--navy); }
.topbar-meta { color: var(--text-muted); font-size: .85rem; }
.content-area { padding: 24px 32px; overflow-y: auto; flex: 1; }

/* Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all .15s;
    gap: 6px;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--navy); color: #fff; }
.btn-primary:hover { background: var(--navy-light); }
.btn-secondary { background: var(--gold); color: var(--navy); }
.btn-secondary:hover { background: var(--gold-light); }
.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg); color: var(--text); }
.btn-sm { padding: 6px 12px; font-size: .8rem; }
.btn-block { width: 100%; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: .8rem; font-weight: 600; color: var(--text-muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: .5px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: .9rem;
    background: var(--surface);
    transition: border-color .15s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--navy);
    box-shadow: 0 0 0 3px rgba(12,35,64,.1);
}

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full-width { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 8px; }

.panel {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
}
.panel-header { padding: 16px 20px; border-bottom: 1px solid var(--border); }
.panel-header h3 { font-size: 1rem; font-weight: 600; color: var(--navy); }
.panel-body { padding: 20px; }

.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border-top: 3px solid var(--navy);
}
.stat-card.highlight { border-top-color: var(--gold); }
.stat-value { font-size: 2rem; font-weight: 700; color: var(--navy); }
.stat-label { font-size: .8rem; color: var(--text-muted); margin-top: 4px; }

.data-table { width: 100%; border-collapse: collapse; font-size: .875rem; }
.data-table th { text-align: left; padding: 10px 14px; background: var(--bg); font-weight: 600; color: var(--text-muted); font-size: .75rem; text-transform: uppercase; letter-spacing: .5px; }
.data-table td { padding: 12px 14px; border-top: 1px solid var(--border); }
.data-table tr:hover td { background: #fafbfc; }
.data-table .empty { text-align: center; color: var(--text-muted); padding: 32px; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: .7rem; font-weight: 600; letter-spacing: .5px; }
.badge-success { background: #d1fae5; color: var(--success); }
.badge-warning { background: #fef3c7; color: var(--warning); }
.badge-danger { background: #fee2e2; color: var(--danger); }
.badge-info { background: #e0f2fe; color: var(--info); }
.badge-secondary { background: #f1f5f9; color: var(--text-muted); }

.alert { padding: 14px 18px; border-radius: var(--radius); margin-bottom: 20px; font-size: .9rem; }
.alert-success { background: #d1fae5; color: var(--success); border: 1px solid #a7f3d0; }
.alert-error { background: #fee2e2; color: var(--danger); border: 1px solid #fecaca; }

.page-actions { margin-bottom: 20px; display: flex; gap: 12px; }
.action-buttons { display: flex; flex-wrap: wrap; gap: 10px; }

.detail-list { display: grid; grid-template-columns: 140px 1fr; gap: 8px 16px; }
.detail-list dt { font-weight: 600; color: var(--text-muted); font-size: .8rem; }
.detail-list dd { font-size: .9rem; }

code { background: #f1f5f9; padding: 2px 6px; border-radius: 4px; font-size: .85em; }
code.small { font-size: .75em; }

.flow-chain { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.flow-step { padding: 6px 14px; background: var(--bg); border-radius: 20px; font-size: .8rem; color: var(--text-muted); }
.flow-step.done { background: #d1fae5; color: var(--success); }
.flow-step.active { background: var(--navy); color: #fff; }
.flow-arrow { color: var(--text-muted); }

.pipeline { display: flex; flex-direction: column; gap: 8px; }
.pipeline-step {
    padding: 10px 14px;
    background: var(--bg);
    border-left: 3px solid var(--gold);
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: .85rem;
}

.file-drop {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 32px;
    text-align: center;
    cursor: pointer;
    transition: all .15s;
    position: relative;
}
.file-drop:hover, .file-drop.dragover { border-color: var(--navy); background: rgba(12,35,64,.03); }
.file-drop input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file-drop p { font-weight: 500; color: var(--navy); }
.file-drop small { color: var(--text-muted); }
.file-name { margin-top: 10px; color: var(--success); font-weight: 500; }

.search-form { display: flex; gap: 12px; }
.search-input { flex: 1; padding: 12px 16px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 1rem; }
.inline-input { padding: 6px 10px; border: 1px solid var(--border); border-radius: var(--radius); font-size: .8rem; width: 200px; }

.error-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.error-card { text-align: center; background: var(--surface); padding: 48px; border-radius: 12px; box-shadow: var(--shadow); }
.error-card h1 { font-size: 4rem; color: var(--navy); }
.error-card p { color: var(--text-muted); margin: 16px 0 24px; }

/* Digital Depository — SharePoint-style browser */
.depository-shell { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.depository-toolbar { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; border-bottom: 1px solid var(--border); background: #fafbfc; }
.depository-toolbar-left, .depository-toolbar-right { display: flex; gap: 10px; align-items: center; }
.client-select { padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius); font-size: .875rem; min-width: 280px; }

.depository-breadcrumb { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; padding: 12px 20px; border-bottom: 1px solid var(--border); font-size: .875rem; background: var(--surface); }
.depository-breadcrumb a { color: var(--navy); text-decoration: none; }
.depository-breadcrumb a:hover { text-decoration: underline; }
.crumb-sep { color: var(--text-muted); }
.crumb-root { font-weight: 600; }
.crumb-icon { margin-right: 4px; }

.depository-panel { margin: 0; box-shadow: none; border-radius: 0; }
.depository-header { display: flex; justify-content: space-between; align-items: center; }
.depository-count { font-size: .8rem; color: var(--text-muted); font-weight: normal; }

.depository-table .depository-link { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; }
.depository-table .depository-link:hover strong { color: var(--navy); text-decoration: underline; }
.file-icon { font-size: 1.2rem; }
.folder-icon { color: #eab308; }
.file-meta { display: block; font-size: .75rem; color: var(--text-muted); font-weight: normal; }
.row-folder td { background: #fffef8; }
.row-file td { background: #fff; }

.empty-state { text-align: center; padding: 48px 20px !important; }
.empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: .5; }
.empty-state p { color: var(--text-muted); margin-bottom: 16px; }

.panel-compact { margin-bottom: 16px; }

/* Dropdown menu */
.dropdown { position: relative; }
.dropdown-toggle::after { content: ' ▾'; }
.dropdown-menu { display: none; position: absolute; top: 100%; left: 0; z-index: 100; min-width: 200px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0,0,0,.12); padding: 6px 0; margin-top: 4px; }
.dropdown-menu.show { display: block; }
.dropdown-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 16px; border: none; background: none; text-align: left; font-size: .875rem; color: var(--text); cursor: pointer; text-decoration: none; }
.dropdown-item:hover { background: var(--bg); }
.item-icon { width: 20px; text-align: center; }

.depository-table .depository-file-link:hover strong { color: var(--navy); text-decoration: underline; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.text-muted { color: var(--text-muted); font-size: .8rem; }
.actions-cell .btn { margin-right: 4px; }

.preview-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.preview-actions { display: flex; gap: 10px; }
.preview-panel { margin-bottom: 20px; }
.preview-meta { display: flex; gap: 12px; align-items: center; font-size: .85rem; margin-top: 6px; }
.preview-frame-wrap { background: #525659; border-radius: var(--radius); overflow: hidden; min-height: 70vh; }
.preview-frame { width: 100%; height: 75vh; border: none; display: block; }
.preview-watermark-note { text-align: center; font-size: .8rem; color: var(--text-muted); margin-top: 12px; }
.preview-fallback { text-align: center; padding: 60px 20px; }
.preview-fallback-icon { font-size: 4rem; margin-bottom: 16px; opacity: .4; }
.preview-details { background: var(--surface); padding: 20px; border-radius: var(--radius); box-shadow: var(--shadow); max-width: 600px; }

/* Modal — must stay hidden until .open is added */
.modal-overlay { display: none !important; position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 1000; align-items: center; justify-content: center; }
.modal-overlay.open { display: flex !important; }
.modal-card { background: var(--surface); border-radius: 12px; width: 100%; max-width: 480px; box-shadow: 0 20px 60px rgba(0,0,0,.25); }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.modal-header h3 { font-size: 1.1rem; color: var(--navy); }
.modal-close { background: none; border: none; font-size: 1.5rem; cursor: pointer; color: var(--text-muted); line-height: 1; }
.modal-body { padding: 22px; }
.modal-footer { display: flex; justify-content: flex-end; gap: 10px; padding: 14px 22px; border-top: 1px solid var(--border); }
.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: 8px; }

@media (max-width: 900px) {
    .app-shell { flex-direction: column; }
    .sidebar { width: 100%; }
    .panel-grid, .detail-grid, .form-grid { grid-template-columns: 1fr; }
    .content-area { padding: 16px; }
}