/* Lightweight aesthetic improvements compatible with dark theme */
:root {
    --accent: #6fbf73; /* soft green */
    --accent-2: #5aa2e6; /* soft blue */
    --text-muted: #aeb5bd;
    --bg-elev-1: #1f2327;
    --bg-elev-2: #24292e;
}

.app-layout {
    background-color: var(--bg-elev-2);
}

.sidebar {
    background-color: var(--bg-elev-1);
    border-right: 1px solid rgba(255,255,255,0.06);
}

.sidebar .nav-link {
    color: #d0d7de;
    border-radius: 8px;
    transition: background-color 120ms ease, color 120ms ease;
}
.sidebar .nav-link:hover {
    background-color: rgba(255,255,255,0.06);
    color: #fff;
}
.sidebar .nav-link.active {
    background-color: rgba(255,255,255,0.12);
}

.app-title {
    color: #e6edf3;
}

.style_fps {
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.08);
    color: #c9d1d9;
    border-radius: 8px;
}

.header-row {
    gap: 8px;
}

.card {
    background-color: var(--bg-elev-1);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 10px;
}

.btn-primary, .btn-success, .btn-secondary, .btn-outline-primary, .btn-danger, .btn-warning {
    border-radius: 8px;
}
.btn-primary {
    background-color: var(--accent);
    border-color: var(--accent);
}
.btn-secondary {
    background-color: #3b4046;
    border-color: #3b4046;
}
.btn-outline-primary {
    color: var(--accent-2);
    border-color: var(--accent-2);
}
.btn-outline-primary:hover {
    background-color: rgba(90,162,230,0.12);
}

.camera-area img.camera-image {
    border-radius: 10px;
    border: 1px solid rgba(255,255,255,0.08);
    background-color: #111;
}

.camera-area-referee img.camera-image {
    border-radius: 10px;
}

.detection-wrapper {
    background: rgba(0,0,0,0.25);
    border-radius: 8px;
    padding: 8px 10px;
}

.quality-status {
    color: var(--text-muted);
}

.no-backend .badge {
    box-shadow: 0 0 0 2px rgba(255,0,0,0.15) inset;
}

/* GPU-friendly animation utility */
.spin {
    display: inline-block;
    will-change: transform;
    animation: spin 1s linear infinite;
}
@keyframes spin { from { transform: rotate(0deg);} to { transform: rotate(360deg);} }

/* Sidebar collapsed subtle transition */
.app-layout .sidebar {
    transition: width 150ms ease;
}

/* Improve offcanvas settings button visibility */
.settings-button {
    box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

/* Toast and history minor polish */
.toast {
    border-radius: 8px;
}
/* Dark theme — professional palette */
:root{
    --bg:#243a50; /* dark slate */
    --surface:#111827; /* very dark */
    --muted:#dedede; /* muted text */
    --text:#e6eef8; /* main text */
    --primary:#3b82f6; /* blue */
    --primary-600:#2563eb;
    --accent:#06b6d4; /* teal accent */
    --card:#0b1220; /* card surface */
    --border:rgba(255,255,255,0.06);
    --glass:rgba(255,255,255,0.02);
    --success:#16a34a;
    --danger:#ef4444;
    --radius:10px;
    --radius-sm:8px;
    --ring:0 0 0 3px rgba(59,130,246,0.18);
    --sidebar-width: 260px;
    --sidebar-width-collapsed: 72px;
}

/* Base */
html,body{
    background-color:var(--bg) !important;
    color:var(--text) !important;
    overflow-x: hidden; /* avoid horizontal scrollbar */
}

body{
    font-size:16px;
    line-height:1.45;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

/* Links and primary actions */
a, .nav-link{
    color:var(--success);
}
a:hover, .nav-link:hover{ color:var(--primary-600); }

/* Bootstrap helpers overrides */
.bg-dark{ background-color:#0b1220 !important; }
.text-muted{ color:var(--muted) !important; }
.border{ border-color:var(--border) !important; }

/* Navigation */
.navbar, .nav-item, .nav{
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
    border-bottom:1px solid var(--border);
}
.nav-link{
    color:var(--muted);
    padding:0.5rem 0.75rem;
    border-radius:var(--radius-sm);
    position: relative;
    transition: color .18s ease, background-color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.nav-link.active{
    background: linear-gradient(90deg, rgba(59,130,246,0.12), rgba(6,182,212,0.04));
    color:var(--text) !important;
    border: 1px solid rgba(59,130,246,0.18) !important;
}
.nav-link::after{
    content: "";
    position: absolute;
    left: .5rem;
    right: .5rem;
    bottom: .25rem;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform .18s ease;
    opacity: .8;
}
.nav-link:hover::after, .nav-link.active::after{ transform: scaleX(1); }

/* Cards */
.card{
    background: linear-gradient(180deg, var(--card), rgba(11,18,32,0.8));
    border:1px solid var(--border);
    color:var(--text);
    border-radius:var(--radius);
    box-shadow:0 10px 26px rgba(2,6,23,0.45);
    filter: none !important; /* remove light drop-shadow from base css */
    transition: box-shadow .22s cubic-bezier(.22,.61,.36,1), transform .22s cubic-bezier(.22,.61,.36,1), border-color .2s ease;
}
.card-header{ background:transparent; font-weight:600; color:var(--text); }
.card-body{ color:var(--muted); }

.card .btn{ border-radius: var(--radius-sm); }
.card:hover{ transform: translateY(-2px); box-shadow: 0 16px 40px rgba(2,6,23,0.5); }

/* Buttons */
.btn-primary{
    background: linear-gradient(180deg,var(--success),var(--primary-600));
    border-color: rgba(0, 98, 255, 0.18);
    color: white;
    box-shadow: 0 4px 12px rgba(59,130,246,0.12);
}
.btn-outline-primary{
    color:var(--primary);
    border-color: rgba(59,130,246,0.18);
}
.btn-secondary{
    background: linear-gradient(180deg,#64748b,#475569);
    border-color: rgba(148,163,184,0.25);
    color:#eef2f6;
}
.btn-success{
    background: linear-gradient(180deg,#22c55e,#16a34a);
    border-color: rgba(34,197,94,0.25);
}
.btn-danger{
    background: linear-gradient(180deg,#f87171,#ef4444);
    border-color: rgba(239,68,68,0.25);
}
.btn{ transition: background-color .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease, transform .12s ease; }
.btn:focus{ box-shadow: var(--ring); }
.btn:hover{ filter: brightness(1.06); }
.btn:active{ transform: translateY(1px) scale(.99); box-shadow: 0 2px 6px rgba(0,0,0,.2) inset; }
/* Subtle center ripple effect */
.btn{ position: relative; overflow: hidden; }
.btn::after{
    content: "";
    position: absolute; inset: -2px;
    background: radial-gradient(circle at center, rgba(255,255,255,0.18), rgba(255,255,255,0) 60%);
    transform: scale(0);
    transition: transform .28s ease;
    pointer-events: none;
}
.btn:active::after{ transform: scale(1); transition-duration: .18s; }

/* Forms */
.form-control{
    background: rgba(255,255,255,0.02);
    border:1px solid var(--border);
    color:var(--text);
    border-radius:var(--radius-sm);
    transition: background-color .18s ease, color .18s ease, border-color .18s ease, box-shadow .18s ease;
}
.form-control:focus{
    box-shadow:0 0 0 0.2rem rgba(59,130,246,0.12);
    border-color:var(--primary-600);
}
.form-select, .input-group-text{ background: rgba(255,255,255,0.03); border:1px solid var(--border); color:var(--text); border-radius:var(--radius-sm); }
.form-check-input{ background-color:transparent; border:1px solid var(--border); }
.form-check-input:checked{ background-color: var(--primary-600); border-color: var(--primary-600); }

/* Tables */
.table{
    color:var(--text);
}
.table thead th{
    color:var(--muted);
    border-bottom:1px solid var(--border);
}
.table tbody tr{
    border-bottom:1px solid rgba(255,255,255,0.03);
}
.table-striped tbody tr:nth-of-type(odd){ background: rgba(255,255,255,0.01); }
.table-hover tbody tr:hover{ background: rgba(59,130,246,0.06); }
.table tbody tr{ transition: background-color .16s ease, color .16s ease; }

/* Alerts / badges */
.bg-head-green, .border-green{ background: linear-gradient(90deg, rgba(16,185,129,0.12), transparent); color:var(--text); }
.bg-head-blue { background: linear-gradient(90deg, rgba(59,130,246,0.12), transparent); }
.badge{ background: rgba(255,255,255,0.06); color: var(--text); border:1px solid var(--border); }

/* Utility adjustments for professional layout */
.container{ max-width:1200px; }
.header-row{ display:flex; align-items:center; justify-content:space-between; gap:1rem; }
.p-compact{ padding: .6rem !important; }
hr{ border-color: var(--border); opacity:1; }
code{ background: rgba(255,255,255,0.04); border:1px solid var(--border); padding: .15rem .35rem; border-radius:6px; color: #cbd5e1; }

/* App layout: vertical sidebar */
.app-layout{ min-height:100vh; width:100%; overflow-x:hidden; }
.sidebar{
    width: var(--sidebar-width);
    padding: 1rem;
    background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
    border-right: 1px solid var(--border);
    position: sticky; top:0; height:100vh; overflow-y:auto;
    display:flex; flex-direction:column; gap:.5rem;
    flex: 0 0 var(--sidebar-width); /* fixed basis to prevent overflow calc */
}
.sidebar-header{ color: var(--text); }
.sidebar-nav{ gap:.25rem; }
.sidebar .nav-link{ display:block; }
.app-main{ min-width:0; flex: 1 1 auto; }

/* Collapsed sidebar mode */
.app-layout.sidebar-collapsed .sidebar{
    width: var(--sidebar-width-collapsed);
    flex-basis: var(--sidebar-width-collapsed);
}
.app-layout.sidebar-collapsed .app-title{ display:none; }
.app-layout.sidebar-collapsed .sidebar .nav-link{ padding-left: .5rem; text-align: center; }
.app-layout.sidebar-collapsed .sidebar .nav-link .label{ display:none; }
.app-layout.sidebar-collapsed .sidebar .nav-link i{ margin: 0; }
.app-layout.sidebar-collapsed .sidebar .nav-link::before{ left: .2rem; }

@media (max-width: 992px){
    .app-layout{ flex-direction: column; }
    .sidebar{ width: 100%; height: auto; position: relative; border-right: none; border-bottom: 1px solid var(--border); }
}

/* Tweak small components from existing app.css to fit dark theme */
.style_fps{ background: rgba(255,255,255,0.03); color:var(--text); }
.nav-item{ background: transparent; }
/* Make FPS badge more subtle */
.navbar .style_fps{ border:1px solid var(--border); padding: .25rem .5rem; box-shadow:none; }

/* Offset floating settings button to avoid sidebar overlap */
.settings-button{ left: calc(var(--sidebar-width) + 18px) !important; z-index: 10; }
@media (max-width: 992px){
    .settings-button{ left: 18px !important; }
}

/* Sidebar nav active indicator */
.sidebar .nav-link{ border:1px solid transparent; padding-left: .85rem; }
.sidebar .nav-link::after{ display: none; }
.sidebar .nav-link::before{
    content:""; position:absolute; left:.35rem; top:.45rem; bottom:.45rem; width:3px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    border-radius: 2px; transform: scaleY(0); transform-origin: top; transition: transform .18s ease;
}
.sidebar .nav-link:hover{ background: rgba(255,255,255,0.03); border-color: var(--border); }
.sidebar .nav-link.active{ background: linear-gradient(90deg, rgba(59,130,246,0.10), rgba(6,182,212,0.04)); color: var(--text); border-color: rgba(59,130,246,0.18); }
.sidebar .nav-link.active::before{ transform: scaleY(1); }

/* Main area subtle gradient background */
.app-main{
    background:
        radial-gradient(800px 500px at -10% -20%, rgba(59,130,246,0.06), transparent 60%),
        radial-gradient(700px 500px at 120% 120%, rgba(6,182,212,0.05), transparent 60%);
}

/* Scoreboard visual boost */
#GreenScore, #BlueScore, .TimerMinutes{
    font-variant-numeric: tabular-nums; font-feature-settings: "tnum" 1;
    letter-spacing: .02em;
}
#GreenScore{ color:#34d399; text-shadow: 0 0 10px rgba(16,185,129,.12); }
#BlueScore{ color:#93c5fd; text-shadow: 0 0 10px rgba(59,130,246,.12); }
.TimerMinutes{ color:#e5e7eb; text-shadow: 0 0 8px rgba(148,163,184,.10); }

/* Alerts refinement */
.alert{
    background: linear-gradient(180deg, rgba(234,179,8,0.08), rgba(234,179,8,0.03));
    border:1px solid rgba(234,179,8,0.25);
    color:#fde68a;
}
.alert a{ color:#fbbf24; }

/* Scheduler selected row accent */
.scheduler-game-row-selected{ position: relative; }
.scheduler-game-row-selected::before{
    content:""; position:absolute; left:0; top:0; bottom:0; width:4px;
    background: linear-gradient(180deg, #f59e0b, #fbbf24);
}

/* Themed scrollbars */
.app-main, .sidebar, .offcanvas, .tchat-dim{
    scrollbar-width: thin; scrollbar-color: #334155 #0b1220;
}
.app-main::-webkit-scrollbar, .sidebar::-webkit-scrollbar, .offcanvas::-webkit-scrollbar, .tchat-dim::-webkit-scrollbar{ height:8px; width:8px; }
.app-main::-webkit-scrollbar-track, .sidebar::-webkit-scrollbar-track, .offcanvas::-webkit-scrollbar-track, .tchat-dim::-webkit-scrollbar-track{ background:#0b1220; }
.app-main::-webkit-scrollbar-thumb, .sidebar::-webkit-scrollbar-thumb, .offcanvas::-webkit-scrollbar-thumb, .tchat-dim::-webkit-scrollbar-thumb{
    background: #334155; border-radius: 8px; border: 1px solid #0b1220;
}

/* Offcanvas header border for structure */
.offcanvas-header{ border-bottom: 1px solid var(--border); }

/* Accessibility: ensure sufficient contrast for important CTAs */
.btn-primary:focus, .btn-primary:hover{ filter:brightness(1.05); }

/* Icon micro-animations */
.refresh-cameras:hover .bi-arrow-repeat{ animation: spinIcon .6s linear infinite; }
@keyframes spinIcon{ to{ transform: rotate(1turn); } }
.start-capture:hover .bi-play-fill{ transform: translateX(2px); transition: transform .15s ease; }
.stop-game:hover .bi-stop-fill{ transform: scale(1.05); transition: transform .12s ease; }
.pause-game:hover .bi-pause-fill{ transform: translateY(-1px); transition: transform .12s ease; }
.resume-game:hover .bi-play-fill{ transform: translateX(2px); transition: transform .15s ease; }

/* Minor helpers */
.shadow-soft{ box-shadow: 0 8px 30px rgba(2,6,23,0.6); }
.rounded-md{ border-radius:8px; }

/* Ensure images with white/transparent backgrounds blend */
img{ image-rendering:auto; }

/* Progress refinements */
.progress, .progress *{ transition: all .22s ease; }
.progress-bar{ transition: width .35s ease, background-color .2s ease, box-shadow .2s ease; }
.progress-bar-striped{ animation: progress-stripes 1.2s linear infinite; }
@keyframes progress-stripes{ to { background-position: 1rem 0; } }

/* Responsive tweaks */
@media (max-width:768px){
    body{ font-size:15px; }
    .loader-text{ font-size:28px !important; }
}

/* Offcanvas settings panel */
.offcanvas, .offcanvas-lg, .offcanvas-md {
    background: linear-gradient(180deg, var(--surface), rgba(11,18,32,0.95));
    color: var(--text);
    border-left:1px solid var(--border);
}

/* Pulsation douce pour états d’alerte (remplace blink agressif) */
.blinking{ animation: pulse-soft 1.6s ease-in-out infinite; }
@keyframes pulse-soft{
    0%{ opacity: .65; }
    50%{ opacity: 1; }
    100%{ opacity: .65; }
}

/* Skeleton shimmer utility (ajoutable via classe .skeleton) */
.skeleton{
    position: relative;
    overflow: hidden;
    background: rgba(255,255,255,0.04);
}
.skeleton::after{
    content:"";
    position:absolute; inset:0;
    transform: translateX(-100%);
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.06), transparent);
    animation: shimmer 1.2s infinite;
}
@keyframes shimmer{ 100%{ transform: translateX(100%); } }

/* Respect des préférences de réduction des animations */
@media (prefers-reduced-motion: reduce){
    *, *::before, *::after{ animation: none !important; transition: none !important; }
}