/* ============================================================
   Octovis Portal — design adopted from sdtm_mapping
   Bootstrap 5 base + the Octovis petrol/teal theme.
   Legacy class names (.card, .metric-card, .button, .side-link,
   .page-header …) are kept so existing templates restyle
   automatically.
   ============================================================ */

:root {
    --petrol:        #008591;
    --petrol-dark:   #14606c;
    --petrol-light:  #e0f4f5;
    --teal:          #3dc3c3;
    --teal-soft:     #61cebc;
    --teal-pale:     #e8f8f7;
    --orange:        #eb6e08;
    --orange-pale:   #fdf0e6;
    --cream:         #ebe7d4;
    --cream-light:   #f9f7f0;
    --dark:          #0c0d19;
    --text-muted:    #5a6a72;
    --border:        #dde8e9;
    --sidebar-bg:    #ffffff;
    --success-soft:  #dcfce7;
    --warning-soft:  #fef3c7;
    --danger-soft:   #fee2e2;

    /* legacy aliases used by old templates */
    --bg:        var(--cream-light);
    --panel:     #ffffff;
    --ink:       var(--dark);
    --muted:     var(--text-muted);
    --teal-dark: var(--petrol-dark);
    --line:      var(--border);
    --green:     #108c4f;
    --shadow:    0 1px 4px rgba(0,133,145,.06);
}

/* ── Base ───────────────────────────────────────────────── */
body {
    background: var(--cream-light);
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    color: var(--dark);
}
a { color: var(--petrol); }
a:hover { color: var(--petrol-dark); }
code { background: #eef7f7; padding: 2px 7px; border-radius: 7px; }

/* ── Navbar ─────────────────────────────────────────────── */
.navbar {
    background: var(--petrol) !important;
    box-shadow: 0 2px 8px rgba(0,133,145,.25);
    padding: 0 1.5rem;
    height: 56px;
}
.navbar-brand {
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: .3px;
    color: white !important;
    display: flex;
    align-items: center;
}
.navbar .btn-outline-light {
    border-color: rgba(255,255,255,.4);
    color: white;
    font-size: .8rem;
}
.navbar .btn-outline-light:hover {
    background: rgba(255,255,255,.15);
    border-color: white;
}
.navbar .dropdown-menu {
    border: none;
    box-shadow: 0 4px 20px rgba(0,0,0,.12);
    border-radius: 10px;
}

/* ── Sidebar ────────────────────────────────────────────── */
.sidebar {
    min-height: calc(100vh - 56px);
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border);
    padding-top: 1.15rem !important;
}

/* Section caption, e.g. STUDIES */
.sidebar-section {
    font-size: .68rem;
    font-weight: 700;
    letter-spacing: .11em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: .3rem 1rem .3rem;
    margin-top: .2rem;
}

/* Base row.
   Sizes follow sdtm_mapping: a top level bar you can hit without aiming, and
   noticeably smaller steps below it, so the depth is visible from the shape. */
.sidebar .nav-link {
    color: #33484f;
    border-radius: 8px;
    margin: 2px 8px;
    padding: .3rem .75rem;
    font-size: .86rem;
    font-weight: 500;
    line-height: 1.2;
    transition: background .15s, color .15s;
    display: flex;
    align-items: center;
    gap: .6rem;
}
.sidebar .nav-link i {
    font-size: .95rem;
    width: 18px;
    text-align: center;
    color: var(--text-muted);
    flex-shrink: 0;
}
.sidebar .nav-link:hover    { background: var(--petrol-light); color: var(--petrol-dark); }
.sidebar .nav-link:hover i  { color: var(--petrol); }
.sidebar .nav-link.active   { background: var(--petrol-light); color: var(--petrol); font-weight: 650; }
.sidebar .nav-link.active i { color: var(--petrol); }

/* ── Top level: every main entry sits on a solid petrol bar ──────────────
   Group headers and plain links alike. Anything indented (.sub, .subsub,
   .subsub3) is excluded, so the bars mark exactly one level.              */
.sidebar .nav-link:not(.sub):not(.subsub):not(.subsub3) {
    background: var(--petrol);
    color: #fff;
    font-weight: 650;
    letter-spacing: .01em;
    box-shadow: 0 1px 3px rgba(0,133,145,.22);
    margin-top: .22rem;
}
.sidebar .nav-link:not(.sub):not(.subsub):not(.subsub3) i { color: #fff; }
.sidebar .nav-link:not(.sub):not(.subsub):not(.subsub3):hover,
.sidebar .nav-link:not(.sub):not(.subsub):not(.subsub3).active {
    background: var(--petrol-dark);
    color: #fff;
}
.sidebar .nav-link:not(.sub):not(.subsub):not(.subsub3):hover i,
.sidebar .nav-link:not(.sub):not(.subsub):not(.subsub3).active i { color: #fff; }

.sidebar .nav-link.area-toggle { text-decoration: none; cursor: pointer; }
.sidebar .nav-link.area-toggle .chev { transition: transform .15s; font-size: .8rem; opacity: .85; }
.sidebar .nav-link.area-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }

/* Nested levels — smaller with every step, plain background */
.sidebar .nav-link.sub {
    padding-left: 2.2rem;
    font-size: .84rem;
    font-weight: 480;
    margin-top: 0;
    margin-bottom: 0;
}
.sidebar .nav-link.sub i     { font-size: .95rem; }
.sidebar .nav-link.subsub {
    padding-left: 2.9rem;
    font-size: .81rem;
    color: #4c646d;
}
.sidebar .nav-link.subsub i  { font-size: .9rem; }
.sidebar .nav-link.subsub3 {
    padding-left: 3.6rem;
    font-size: .77rem;
    color: #61787f;
}
.sidebar .nav-link.subsub3 i { font-size: .84rem; }

/* Customer / study caption inside a group */
.sidebar .customer-label {
    display: flex; align-items: center; gap: .55rem;
    font-size: .845rem; font-weight: 650; color: var(--petrol-dark);
    padding: .55rem .85rem .2rem 1.5rem; margin-top: .35rem;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar .customer-label i { color: var(--teal); font-size: 1rem; width: 20px; text-align: center; }

/* Collapsible groups */
.sidebar .area-group { display: none; padding-bottom: .3rem; }
.sidebar .area-group[data-open="1"] { display: block; }
.sidebar .area-toggle .chev { transition: transform .15s; font-size: .68rem !important; opacity: .75; }
.sidebar .area-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.sidebar .area-toggle .ms-auto { margin-left: auto; }
.sidebar .customer-toggle { text-decoration: none; cursor: pointer; }
.sidebar .customer-toggle:hover { color: var(--petrol); }
.sidebar .customer-toggle .chev { transition: transform .15s; font-size: .62rem !important; color: var(--text-muted); margin-left: auto; }
.sidebar .customer-toggle[aria-expanded="true"] .chev { transform: rotate(180deg); }
.sidebar hr { border-color: var(--border); margin: .85rem .6rem; }

.study-card-small {
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--cream-light);
    padding: 12px 14px;
    margin: 0 10px 12px;
}
.study-card-small strong { display: block; font-size: .95rem; color: var(--petrol-dark); }
.study-card-small span { display: block; color: var(--text-muted); font-size: .75rem; margin-top: 3px; }

/* legacy sidebar classes (in case any template still uses them) */
.sidebar-section-title {
    font-size: .7rem; font-weight: 600; letter-spacing: .08em;
    text-transform: uppercase; color: var(--text-muted); padding: .5rem 1rem .25rem;
}
.side-link {
    display: flex; align-items: center; gap: .5rem;
    color: #3d5560; padding: .5rem .75rem; border-radius: 8px;
    font-size: .875rem; font-weight: 450; margin: 1px 8px;
}
.side-link:hover { background: var(--petrol-light); color: var(--petrol-dark); }
.side-link.active { background: var(--petrol-light); color: var(--petrol); font-weight: 600; }
.muted-link, .text-muted { color: var(--text-muted) !important; }
.sidebar-divider { height: 1px; background: var(--border); margin: .75rem .5rem; }

/* ── Content / headings ─────────────────────────────────── */
.content { min-width: 0; }
.page-header {
    display: flex; justify-content: space-between; align-items: flex-start;
    gap: 20px; margin-bottom: 20px;
}
.page-header.slim { margin-bottom: 14px; }
.eyebrow {
    margin: 0 0 7px; color: var(--petrol); text-transform: uppercase;
    letter-spacing: .13em; font-size: .72rem; font-weight: 700;
}
h1 { margin: 0; font-size: 2rem; line-height: 1.1; font-weight: 700; }
h2 { margin: 0 0 12px; font-size: 1.25rem; font-weight: 600; }
h3 { margin: 0 0 8px; }
p { line-height: 1.55; }
.hint { color: var(--text-muted); margin: 8px 0 0; }

/* ── Cards ──────────────────────────────────────────────── */
.card, .hero-panel {
    background: white;
    border: 1px solid var(--border);
    box-shadow: 0 1px 4px rgba(0,133,145,.06);
    border-radius: 12px;
    padding: 22px;
    margin-bottom: 18px;
}
.card-header {
    background: white; border-bottom: 1px solid var(--border);
    font-weight: 600; border-radius: 12px 12px 0 0 !important; padding: .875rem 1.25rem;
}
.hero-panel h1 { font-size: 2.4rem; }
.two-column { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }

/* ── Metric / stat cards ────────────────────────────────── */
.metric-grid { display: grid; grid-template-columns: repeat(4, minmax(150px, 1fr)); gap: 14px; margin-bottom: 18px; }
.metric-card {
    background: white; border: 1px solid var(--border);
    border-radius: 12px; padding: 18px; box-shadow: 0 1px 4px rgba(0,133,145,.06);
}
.metric-card span { display: block; color: var(--text-muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 600; }
.metric-card strong { display: block; font-size: 1.7rem; color: var(--petrol-dark); margin: 6px 0 4px; }
.metric-card small { color: var(--text-muted); }

/* ── Buttons ────────────────────────────────────────────── */
.btn-primary { background: var(--petrol); border-color: var(--petrol); font-weight: 500; }
.btn-primary:hover, .btn-primary:focus { background: var(--petrol-dark); border-color: var(--petrol-dark); }
.btn-outline-primary { color: var(--petrol); border-color: var(--petrol); }
.btn-outline-primary:hover { background: var(--petrol); border-color: var(--petrol); }
.btn-success { background: var(--teal); border-color: var(--teal); color: white; }
.btn-success:hover { background: var(--petrol); border-color: var(--petrol); }

/* legacy .button */
.button, button.button {
    border: 0; display: inline-flex; align-items: center; justify-content: center;
    gap: 8px; min-height: 38px; padding: 9px 14px; border-radius: 8px;
    background: var(--petrol); color: white; font-weight: 500; cursor: pointer;
    text-decoration: none;
}
.button:hover { background: var(--petrol-dark); color: white; }
.button.secondary { background: var(--petrol-light); color: var(--petrol-dark); border: 1px solid var(--border); }
.button.secondary:hover { background: var(--teal-pale); }
.button-row { display: flex; gap: 9px; flex-wrap: wrap; }

.action-grid { display: grid; grid-template-columns: repeat(3, minmax(180px, 1fr)); gap: 14px; }
.action-tile {
    display: block; background: var(--cream-light); border: 1px solid var(--border);
    border-radius: 12px; padding: 18px; color: var(--dark); text-decoration: none;
    transition: all .15s;
}
.action-tile:hover { border-color: var(--teal); box-shadow: 0 4px 12px rgba(0,133,145,.08); }
.action-tile strong { display: block; margin-bottom: 6px; color: var(--petrol-dark); }
.action-tile span { color: var(--text-muted); font-size: 13px; }

/* ── Pills / badges ─────────────────────────────────────── */
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { background: var(--petrol-light); color: var(--petrol-dark); padding: 4px 12px; border-radius: 20px; font-weight: 500; font-size: 13px; }
.empty-state { color: var(--text-muted); text-align: center; padding: 40px; }

.upload-dropzone {
    border: 2px dashed var(--border); border-radius: 12px;
    background: var(--cream-light); min-height: 180px; display: grid; align-content: center; text-align: center;
}

/* ── Dashboard frame ────────────────────────────────────── */
.dashboard-frame {
    border: 1px solid var(--border); border-radius: 12px; overflow: hidden;
    background: white; height: calc(100vh - 170px); min-height: 700px;
    box-shadow: 0 1px 4px rgba(0,133,145,.06);
}
.dashboard-frame iframe { width: 100%; height: 100%; border: 0; }

/* ── Tables ─────────────────────────────────────────────── */
table { width: 100%; border-collapse: collapse; background: transparent; }
th, td { padding: 12px 10px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
th { background: var(--petrol-light); color: var(--petrol-dark); font-size: .85rem; font-weight: 600; text-transform: none; letter-spacing: normal; }
.table thead th { background: var(--petrol-light); color: var(--petrol-dark); border-color: var(--border); font-weight: 600; font-size: .85rem; }
.table-hover tbody tr:hover { background: var(--teal-pale); }

/* ── File tree / preview ────────────────────────────────── */
.split-card { display: grid; grid-template-columns: minmax(260px, 360px) 1fr; gap: 24px; }
.tree-panel { overflow: auto; }
.file-tree { list-style: none; padding-left: 18px; margin: 6px 0; }
.root-tree { padding-left: 0; }
.tree-node { margin: 7px 0; }
.tree-node summary { cursor: pointer; font-weight: 600; color: var(--dark); }
.tree-file a { font-weight: 500; }
.file-meta { color: var(--text-muted); font-size: 12px; margin-left: 8px; }
.file-preview {
    background: #10272b; color: #e7ffff; border-radius: 12px;
    padding: 18px; overflow: auto; max-height: 640px; line-height: 1.45;
    font-family: monospace; font-size: .85rem;
}

/* ── Forms (legacy) ─────────────────────────────────────── */
.grid.two-columns { display: grid; grid-template-columns: minmax(280px, 0.85fr) minmax(420px, 1.15fr); gap: 1rem; }
.form-stack { display: flex; flex-direction: column; gap: 0.85rem; }
.form-stack label { display: flex; flex-direction: column; gap: 0.35rem; font-weight: 600; }
.form-stack select,
.form-stack input[type="text"],
.form-stack input[type="email"] {
    border: 1px solid var(--border); border-radius: 8px; padding: 0.65rem 0.75rem; background: #fff;
}
.form-control:focus, .form-select:focus, .form-stack select:focus, .form-stack input:focus {
    border-color: var(--teal); box-shadow: 0 0 0 .2rem rgba(61,195,195,.2); outline: none;
}
.checkbox-row { flex-direction: row !important; align-items: center; font-weight: 500 !important; }

/* ── Messages (legacy) ──────────────────────────────────── */
.messages { margin-bottom: 1rem; }
.message { border: 1px solid var(--border); border-radius: 12px; background: #fff; padding: 0.75rem 1rem; margin-bottom: 0.5rem; }
.message.success { border-color: #16a34a; background: var(--success-soft); }
.message.error { border-color: #f3bbbb; background: var(--danger-soft); }
.status.ok { color: #137b3f; font-weight: 700; }
.status.muted { color: var(--text-muted); }

/* ── Progress / alerts ──────────────────────────────────── */
.progress { height: 8px; border-radius: 4px; background: var(--cream); }
.progress-bar { background: var(--petrol); }
.alert-info { background: var(--teal-pale); border-color: var(--teal); color: var(--petrol-dark); }
.alert-success { background: var(--success-soft); border-color: #16a34a; }

/* ── Scrollbar ──────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--cream-light); }
::-webkit-scrollbar-thumb { background: var(--teal-soft); border-radius: 3px; }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 992px) {
    .metric-grid, .action-grid, .two-column, .split-card, .grid.two-columns { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; }
}