/* ============================================================
   SkyFlint Evidence — Design System
   Modern, clean UI with full dark/light mode support
   ============================================================ */

/* ─── Fonts ─── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ─── Light Theme (default) ─── */
:root,
[data-bs-theme="light"] {
    --sf-primary:        #4f6ef7;
    --sf-primary-hover:  #3b5de7;
    --sf-primary-subtle: rgba(79, 110, 247, .08);
    --sf-primary-rgb:    79, 110, 247;

    --sf-bg:             #f4f6f9;
    --sf-bg-card:        #ffffff;
    --sf-bg-nav:         rgba(255, 255, 255, .85);
    --sf-bg-sidebar:     #ffffff;
    --sf-bg-hover:       #f0f2f5;
    --sf-bg-input:       #ffffff;

    --sf-border:         #e2e5ea;
    --sf-border-light:   #eef0f4;

    --sf-text:           #1a1d23;
    --sf-text-secondary: #5f6775;
    --sf-text-muted:     #8b919d;

    --sf-success:        #10b981;
    --sf-warning:        #f59e0b;
    --sf-danger:         #ef4444;
    --sf-info:           #3b82f6;

    --sf-shadow-sm:      0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --sf-shadow-md:      0 4px 16px rgba(0,0,0,.06), 0 1px 4px rgba(0,0,0,.04);
    --sf-shadow-lg:      0 12px 40px rgba(0,0,0,.08);

    --sf-radius:         10px;
    --sf-radius-lg:      14px;
    --sf-sidebar-w:      248px;
}

/* ─── Dark Theme ─── */
[data-bs-theme="dark"] {
    --sf-primary:        #6b8afc;
    --sf-primary-hover:  #8ba2fd;
    --sf-primary-subtle: rgba(107, 138, 252, .12);
    --sf-primary-rgb:    107, 138, 252;

    --sf-bg:             #0f1117;
    --sf-bg-card:        #181b23;
    --sf-bg-nav:         rgba(24, 27, 35, .9);
    --sf-bg-sidebar:     #14161e;
    --sf-bg-hover:       #1f222d;
    --sf-bg-input:       #1f222d;

    --sf-border:         #2a2d38;
    --sf-border-light:   #22252f;

    --sf-text:           #e8eaed;
    --sf-text-secondary: #9ba1ad;
    --sf-text-muted:     #6b7080;

    --sf-success:        #34d399;
    --sf-warning:        #fbbf24;
    --sf-danger:         #f87171;
    --sf-info:           #60a5fa;

    --sf-shadow-sm:      0 1px 3px rgba(0,0,0,.3);
    --sf-shadow-md:      0 4px 16px rgba(0,0,0,.3);
    --sf-shadow-lg:      0 12px 40px rgba(0,0,0,.4);
}

/* ─── Base ─── */
* { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--sf-bg);
    color: var(--sf-text);
    font-size: .875rem;
    line-height: 1.6;
}

a { color: var(--sf-primary); text-decoration: none; }
a:hover { color: var(--sf-primary-hover); }

::selection { background: rgba(var(--sf-primary-rgb), .2); }

/* ─── Typography ─── */
h1, h2, h3, h4, h5, h6 { font-weight: 600; letter-spacing: -.02em; color: var(--sf-text); }
.text-muted { color: var(--sf-text-muted) !important; }
.text-secondary { color: var(--sf-text-secondary) !important; }
.small, small { font-size: .8125rem; }

/* ─── Cards ─── */
.card {
    background: var(--sf-bg-card);
    border: 1px solid var(--sf-border-light);
    border-radius: var(--sf-radius);
    box-shadow: var(--sf-shadow-sm);
    transition: box-shadow .2s;
}
.card:hover { box-shadow: var(--sf-shadow-md); }
.card-header { background: var(--sf-bg-card); border-bottom: 1px solid var(--sf-border-light); }

/* ─── Buttons ─── */
.btn {
    font-weight: 500;
    border-radius: 8px;
    font-size: .8125rem;
    padding: .4rem .875rem;
    transition: all .15s ease;
    letter-spacing: .01em;
}
.btn-primary {
    background: var(--sf-primary);
    border-color: var(--sf-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--sf-primary-hover);
    border-color: var(--sf-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--sf-primary-rgb), .3);
}
.btn-outline-primary {
    color: var(--sf-primary);
    border-color: var(--sf-primary);
    background: transparent;
}
.btn-outline-primary:hover {
    background: var(--sf-primary);
    border-color: var(--sf-primary);
    color: #fff;
}
.btn-outline-secondary {
    color: var(--sf-text-secondary);
    border-color: var(--sf-border);
    background: transparent;
}
.btn-outline-secondary:hover {
    background: var(--sf-bg-hover);
    border-color: var(--sf-border);
    color: var(--sf-text);
}
.btn-outline-danger { border-color: var(--sf-danger); color: var(--sf-danger); }
.btn-outline-danger:hover { background: var(--sf-danger); color: #fff; }
.btn-outline-success { border-color: var(--sf-success); color: var(--sf-success); }
.btn-outline-success:hover { background: var(--sf-success); color: #fff; }
.btn-sm { padding: .3rem .7rem; font-size: .75rem; }
.btn-lg { padding: .55rem 1.25rem; font-size: .9rem; }

/* ─── Forms ─── */
.form-control, .form-select {
    background: var(--sf-bg-input);
    border: 1px solid var(--sf-border);
    border-radius: 8px;
    color: var(--sf-text);
    font-size: .8125rem;
    padding: .45rem .75rem;
    transition: border-color .15s, box-shadow .15s;
}
.form-control:focus, .form-select:focus {
    background: var(--sf-bg-input);
    border-color: var(--sf-primary);
    box-shadow: 0 0 0 3px rgba(var(--sf-primary-rgb), .12);
    color: var(--sf-text);
}
.form-control::placeholder { color: var(--sf-text-muted); }
.form-label { font-weight: 500; font-size: .8125rem; color: var(--sf-text-secondary); margin-bottom: .3rem; }
.form-text { color: var(--sf-text-muted); font-size: .75rem; }
.form-check-input:checked { background-color: var(--sf-primary); border-color: var(--sf-primary); }
.form-check-label { font-size: .8125rem; }

/* ─── Tables ─── */
.table { color: var(--sf-text); --bs-table-bg: transparent; --bs-table-hover-bg: var(--sf-bg-hover); }
.table thead th {
    font-weight: 600;
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
    color: var(--sf-text-muted);
    border-bottom: 1px solid var(--sf-border);
    padding: .65rem .75rem;
    background: var(--sf-bg-card);
}
.table tbody td { padding: .6rem .75rem; border-bottom: 1px solid var(--sf-border-light); vertical-align: middle; }
.table-hover tbody tr { cursor: pointer; transition: background .1s; }
.table-hover tbody tr:hover { background: var(--sf-bg-hover) !important; }
.table-light { --bs-table-bg: var(--sf-bg); }

/* ─── Badges ─── */
.badge {
    font-weight: 500;
    font-size: .7rem;
    letter-spacing: .02em;
    padding: .3em .6em;
    border-radius: 6px;
}
.badge-status-active    { background: rgba(16,185,129,.12); color: #059669; }
.badge-status-closed    { background: rgba(107,114,128,.12); color: #6b7280; }
.badge-status-pending_review { background: rgba(245,158,11,.12); color: #d97706; }
.badge-status-hold      { background: rgba(239,68,68,.12); color: #dc2626; }

[data-bs-theme="dark"] .badge-status-active    { background: rgba(52,211,153,.15); color: #34d399; }
[data-bs-theme="dark"] .badge-status-closed    { background: rgba(156,163,175,.15); color: #9ca3af; }
[data-bs-theme="dark"] .badge-status-pending_review { background: rgba(251,191,36,.15); color: #fbbf24; }
[data-bs-theme="dark"] .badge-status-hold      { background: rgba(248,113,113,.15); color: #f87171; }

.badge.bg-light { background: var(--sf-bg) !important; color: var(--sf-text-secondary) !important; border: 1px solid var(--sf-border-light); }

/* ─── Alerts ─── */
.alert { border-radius: var(--sf-radius); font-size: .8125rem; border: none; }
.alert-success { background: rgba(16,185,129,.1); color: var(--sf-success); }
.alert-danger  { background: rgba(239,68,68,.1); color: var(--sf-danger); }

/* ─── Access Classes ─── */
.access-class-unrestricted { color: var(--sf-success); }
.access-class-restricted   { color: var(--sf-warning); }
.access-class-confidential { color: var(--sf-danger); }

/* ─── Nav Pills ─── */
.nav-pills .nav-link {
    color: var(--sf-text-secondary);
    border-radius: 8px;
    font-weight: 500;
    font-size: .8125rem;
    padding: .4rem .9rem;
    transition: all .15s;
}
.nav-pills .nav-link:hover { background: var(--sf-bg-hover); color: var(--sf-text); }
.nav-pills .nav-link.active {
    background: var(--sf-primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(var(--sf-primary-rgb), .25);
}

/* ─── Top Navbar ─── */
.sf-navbar {
    background: var(--sf-bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--sf-border-light);
    padding: .5rem 0;
    z-index: 1040;
}
.sf-navbar .navbar-brand {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -.03em;
    color: var(--sf-primary) !important;
    display: flex;
    align-items: center;
    gap: .5rem;
}
.sf-navbar .navbar-brand .brand-dot {
    width: 8px;
    height: 8px;
    background: var(--sf-primary);
    border-radius: 50%;
    display: inline-block;
}
.sf-navbar .nav-link {
    color: var(--sf-text-secondary);
    font-size: .8125rem;
    font-weight: 500;
    padding: .4rem .75rem;
    border-radius: 7px;
    transition: all .15s;
}
.sf-navbar .nav-link:hover { color: var(--sf-text); background: var(--sf-bg-hover); }
.sf-navbar .nav-link.active { color: var(--sf-primary); background: var(--sf-primary-subtle); }

/* ─── Theme Toggle ─── */
.theme-toggle {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 1px solid var(--sf-border);
    background: var(--sf-bg-card);
    color: var(--sf-text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all .15s;
    font-size: 1rem;
}
.theme-toggle:hover { background: var(--sf-bg-hover); color: var(--sf-text); border-color: var(--sf-primary); }

/* ─── Sidebar (admin) ─── */
.sf-sidebar {
    width: var(--sf-sidebar-w);
    min-height: calc(100vh - 57px);
    background: var(--sf-bg-sidebar);
    border-right: 1px solid var(--sf-border-light);
    position: fixed;
    top: 57px;
    left: 0;
    padding: 1.25rem 0;
    overflow-y: auto;
    z-index: 1020;
}
.sf-sidebar .sidebar-heading {
    font-size: .65rem;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--sf-text-muted);
    padding: .75rem 1.25rem .4rem;
    font-weight: 600;
}
.sf-sidebar .nav-link {
    color: var(--sf-text-secondary);
    padding: .5rem 1.25rem;
    font-size: .8125rem;
    font-weight: 500;
    border-radius: 0;
    border-left: 3px solid transparent;
    transition: all .15s;
}
.sf-sidebar .nav-link:hover { background: var(--sf-bg-hover); color: var(--sf-text); }
.sf-sidebar .nav-link.active {
    background: var(--sf-primary-subtle);
    color: var(--sf-primary);
    font-weight: 600;
    border-left-color: var(--sf-primary);
}
.sf-sidebar .nav-link i { width: 20px; text-align: center; margin-right: .6rem; font-size: .9rem; }
.sf-main-content { margin-left: var(--sf-sidebar-w); padding: 1.5rem 2rem; }

/* ─── Stat Cards ─── */
.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--sf-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}
.stat-card .stat-value { font-size: 1.75rem; font-weight: 700; line-height: 1.2; color: var(--sf-text); }
.stat-card .stat-label { font-size: .75rem; color: var(--sf-text-muted); font-weight: 500; }

/* ─── Step Indicator ─── */
.step-indicator .step {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: .875rem;
    transition: all .2s;
}
.step-indicator .step.active { background: var(--sf-primary); color: #fff; box-shadow: 0 2px 8px rgba(var(--sf-primary-rgb), .3); }
.step-indicator .step.inactive { background: var(--sf-bg-hover); color: var(--sf-text-muted); }
.step-indicator .step-line { width: 60px; height: 2px; display: inline-block; vertical-align: middle; }
.step-indicator .step-line.active { background: var(--sf-primary); }
.step-indicator .step-line.inactive { background: var(--sf-border); }

/* ─── Page Header ─── */
.page-header { margin-bottom: 1.5rem; }

/* ─── User Avatar ─── */
.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: var(--sf-primary-subtle);
    color: var(--sf-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: .75rem;
}

/* ─── Empty States ─── */
.empty-state { padding: 3rem 1rem; text-align: center; }
.empty-state i { font-size: 2.5rem; color: var(--sf-text-muted); opacity: .5; }

/* ─── Drop Zone ─── */
.drop-zone {
    border: 2px dashed var(--sf-border);
    border-radius: var(--sf-radius-lg);
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all .2s;
    background: var(--sf-bg);
}
.drop-zone:hover, .drop-zone.dragover {
    border-color: var(--sf-primary);
    background: var(--sf-primary-subtle);
}

/* ─── Upload Overlay ─── */
.upload-overlay-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.55);
    backdrop-filter: blur(4px);
    z-index: 1050;
}
.upload-overlay-content {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1051;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--sf-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--sf-text-muted); }

/* ─── Evidence Timeline ─── */
.evidence-timeline {
    position: relative;
    padding: 8px 0;
}

/* ── Each row: [labels] [track] [card] ── */
.tl-entry {
    display: grid;
    grid-template-columns: 100px 40px 1fr;
    gap: 0;
    min-height: 0;
    position: relative;
    animation: tlSlideIn .45s ease both;
}

/* ── Left column: date + time ── */
.tl-labels {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding-right: 12px;
    padding-top: 14px;
    gap: 2px;
}
.tl-date {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1.15;
}
.tl-month {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .08em;
    color: var(--sf-primary);
}
.tl-day {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--sf-text);
    line-height: 1;
}
.tl-day sup {
    font-size: .55rem;
    font-weight: 600;
}
.tl-time {
    font-size: .7rem;
    font-weight: 500;
    color: var(--sf-text-muted);
    white-space: nowrap;
}

/* ── Center column: vertical track ── */
.tl-track {
    position: relative;
    display: flex;
    justify-content: center;
    padding-top: 16px;
}
/* Solid line segment behind node */
.tl-track::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    margin-left: -1px;
    background: var(--sf-primary);
    opacity: .3;
}
/* First entry: start line from node */
.tl-entry:first-child .tl-track::before { top: 20px; }
/* Last entry: end line at node */
.tl-entry:last-child .tl-track::before { bottom: calc(100% - 28px); }

/* Dashed gap segment between different dates */
.tl-has-gap .tl-track::after {
    content: '';
    position: absolute;
    top: -8px;
    height: 16px;
    left: 50%;
    width: 2px;
    margin-left: -1px;
    border-left: 2px dashed var(--sf-primary);
    opacity: .25;
    background: none;
}

/* Circle node */
.tl-node {
    position: relative;
    z-index: 2;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2.5px solid var(--sf-primary);
    background: var(--sf-bg-card);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform .25s cubic-bezier(.34,1.56,.64,1), box-shadow .25s ease, border-color .25s ease;
}
.tl-node-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sf-primary);
    transition: transform .25s cubic-bezier(.34,1.56,.64,1);
}
.tl-entry:hover .tl-node {
    transform: scale(1.35);
    box-shadow: 0 0 0 6px rgba(var(--sf-primary-rgb), .12);
}
.tl-entry:hover .tl-node-dot {
    transform: scale(1.1);
}

/* ── Right column: card ── */
.tl-body {
    padding: 6px 0 16px 8px;
}
.tl-card {
    display: flex;
    align-items: stretch;
    text-decoration: none !important;
    color: inherit !important;
    background: var(--sf-bg-card);
    border: 1px solid var(--sf-border);
    border-radius: 10px;
    overflow: hidden;
    transition: transform .2s ease, box-shadow .25s ease, border-color .2s ease;
    position: relative;
}
.tl-card:hover {
    transform: translateX(4px);
    box-shadow: 0 8px 30px rgba(0,0,0,.08);
    border-color: var(--tl-color, var(--sf-primary));
}

/* Colored left accent bar */
.tl-card-accent {
    width: 4px;
    flex-shrink: 0;
    border-radius: 10px 0 0 10px;
    opacity: .6;
    transition: opacity .2s ease, width .2s ease;
}
.tl-card:hover .tl-card-accent {
    opacity: 1;
    width: 5px;
}

/* Card body */
.tl-card-inner {
    flex: 1;
    min-width: 0;
    padding: 14px 16px;
}
.tl-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
    flex-wrap: wrap;
}
.tl-card-header > i {
    font-size: 1rem;
    flex-shrink: 0;
}
.tl-card-title {
    font-weight: 600;
    font-size: .9rem;
    color: var(--sf-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}
.tl-card-type {
    font-size: .65rem;
    font-weight: 600;
    color: #fff;
    padding: 2px 8px;
    border-radius: 10px;
    white-space: nowrap;
    flex-shrink: 0;
}
.tl-card-desc {
    font-size: .8rem;
    color: var(--sf-text-muted);
    margin: 4px 0 8px;
    line-height: 1.45;
}
.tl-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: .72rem;
    color: var(--sf-text-muted);
}
.tl-card-meta i {
    margin-right: 3px;
    font-size: .68rem;
}

/* Chevron arrow on right */
.tl-card-arrow {
    display: flex;
    align-items: center;
    padding: 0 12px;
    color: var(--sf-text-muted);
    opacity: 0;
    transition: opacity .2s ease, transform .2s ease;
    flex-shrink: 0;
}
.tl-card:hover .tl-card-arrow {
    opacity: 1;
    transform: translateX(2px);
}

/* ── Animation ── */
@keyframes tlSlideIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive: stack on small screens ── */
@media (max-width: 576px) {
    .tl-entry, .cn-entry { grid-template-columns: 24px 1fr; }
    .tl-labels { display: none; }
    .tl-body { padding-left: 6px; }
}

/* ─── Case Notes Timeline ─── */
.case-notes-timeline {
    position: relative;
    padding: 8px 0;
}
.cn-entry {
    display: grid;
    grid-template-columns: 100px 40px 1fr;
    gap: 0;
    position: relative;
    animation: tlSlideIn .45s ease both;
}
.cn-card {
    display: flex;
    align-items: stretch;
    background: var(--sf-bg-card);
    border: 1px solid var(--sf-border);
    border-radius: 10px;
    overflow: hidden;
    transition: box-shadow .25s ease, border-color .2s ease;
}
.cn-card:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,.06);
    border-color: var(--sf-primary);
}
.cn-card-accent {
    width: 4px;
    flex-shrink: 0;
    background: var(--sf-primary);
    border-radius: 10px 0 0 10px;
    opacity: .45;
    transition: opacity .2s ease;
}
.cn-card:hover .cn-card-accent { opacity: 1; }
.cn-card-inner {
    flex: 1;
    min-width: 0;
    padding: 14px 16px;
}
.cn-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}
.cn-author {
    font-weight: 600;
    font-size: .85rem;
    color: var(--sf-text);
    display: flex;
    align-items: center;
    gap: 6px;
}
.cn-author i { color: var(--sf-primary); font-size: 1rem; }
.cn-badge {
    font-size: .7rem;
    font-weight: 500;
    color: var(--sf-text-muted);
}
.cn-card-body {
    font-size: .85rem;
    line-height: 1.6;
    color: var(--sf-text);
    white-space: pre-wrap;
    word-break: break-word;
}

/* ─── Audio Player ─── */
.audio-player-wrapper {
    background: linear-gradient(135deg, var(--sf-bg-card) 0%, #f8f9fc 100%);
    border-radius: 8px 8px 0 0;
}
.audio-player-wrapper audio {
    border-radius: 8px;
    height: 48px;
}

/* ─── Utility ─── */
.text-pink { color: #e83e8c !important; }

/* ─── Transitions ─── */
.fade-in { animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }