/* ═══════════════════════════════════════════
   CODE IN MOTION — Matrix Green Theme
   ═══════════════════════════════════════════ */

:root {
    --green: #00ff41;
    --green-dim: #008f11;
    --green-dark: #003b00;
    --green-10: rgba(0,255,65,0.1);
    --green-15: rgba(0,255,65,0.15);
    --green-20: rgba(0,255,65,0.2);
    --green-30: rgba(0,255,65,0.3);
    --green-05: rgba(0,255,65,0.05);
    --bg: #0a0a0a;
    --bg-card: #111111;
    --bg-surface: #1a1a1a;
    --bg-hover: #1e1e1e;
    --border: #1e1e1e;
    --border-light: #2a2a2a;
    --text-dim: #5a5a5a;
    --text-med: #999;
    --text: #ccc;
    --text-light: #e8e8e8;
    --red: #ff4444;
    --red-10: rgba(255,68,68,0.1);
    --red-20: rgba(255,68,68,0.2);
    --yellow: #ffc800;
    --blue: #0096ff;
    --cyan: #00bcd4;
    --purple: #9c27b0;
    --orange: #ff9800;
    --radius: 10px;
    --radius-lg: 14px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --font: 'Outfit', -apple-system, sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html, body { 
    height:100%; 
    background:var(--bg); 
    color:var(--text); 
    font-family:var(--font); 
    overflow:hidden;
    -webkit-font-smoothing:antialiased;
}

#app { height:100%; }

/* Scrollbar */
::-webkit-scrollbar { width:5px; height:5px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--green-dark); border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:var(--green-dim); }

/* Glow effect */
.glow { text-shadow: 0 0 10px var(--green), 0 0 30px rgba(0,255,65,0.2); }

/* ─── LOADING SCREEN ─── */
#loading-screen {
    position:fixed; inset:0; z-index:9999;
    background:var(--bg);
    display:flex; align-items:center; justify-content:center;
    transition: opacity 0.6s ease;
}
#loading-screen.fade-out { opacity:0; pointer-events:none; }

.loader-logo { text-align:center; }
.loader-icon {
    width:64px; height:64px; border-radius:16px; margin:0 auto 20px;
    background:linear-gradient(135deg, var(--green), var(--green-dark));
    display:flex; align-items:center; justify-content:center;
    font-size:32px; font-weight:900; color:var(--bg);
    box-shadow:0 0 40px rgba(0,255,65,0.3);
    animation: pulse-icon 2s infinite;
}
.loader-title { font-size:28px; font-weight:900; color:var(--green); letter-spacing:4px; margin-bottom:8px; }
.loader-sub { font-size:11px; color:var(--text-dim); letter-spacing:5px; margin-bottom:24px; }
.loader-bar { width:200px; height:3px; background:var(--border); border-radius:3px; overflow:hidden; margin:0 auto; }
.loader-bar-fill { 
    width:0%; height:100%; background:var(--green); border-radius:3px; 
    animation: load-fill 1.5s ease forwards;
}

@keyframes load-fill { to { width:100%; } }
@keyframes pulse-icon { 0%,100% { box-shadow:0 0 20px rgba(0,255,65,0.2); } 50% { box-shadow:0 0 50px rgba(0,255,65,0.4); } }

/* ─── MAIN LAYOUT ─── */
#main-layout { display:flex; height:100%; overflow:hidden; }

/* ─── SIDEBAR ─── */
#sidebar {
    width:230px; min-width:230px; height:100%;
    background:var(--bg-card);
    border-right:1px solid var(--border);
    display:flex; flex-direction:column;
    overflow:hidden;
}

.sidebar-brand {
    padding:22px 18px 18px;
    border-bottom:1px solid var(--border);
    display:flex; align-items:center; gap:10px;
}
.brand-icon {
    width:34px; height:34px; border-radius:9px; flex-shrink:0;
    background:linear-gradient(135deg, var(--green), var(--green-dark));
    display:flex; align-items:center; justify-content:center;
    font-size:17px; font-weight:900; color:var(--bg);
    box-shadow:0 0 16px rgba(0,255,65,0.25);
}
.brand-name { font-weight:800; font-size:13px; color:var(--green); letter-spacing:1.5px; }
.brand-sub { font-size:8px; color:var(--text-dim); letter-spacing:2.5px; margin-top:2px; }

.conn-badge {
    margin:12px 12px 0; padding:7px 10px; border-radius:7px;
    display:flex; align-items:center; gap:7px;
    font-size:10px; font-weight:700; letter-spacing:1px;
}
.conn-badge.connected { background:var(--green-05); border:1px solid var(--green-15); color:var(--green); }
.conn-badge.disconnected { background:var(--red-10); border:1px solid var(--red-20); color:var(--red); }
.conn-dot {
    width:7px; height:7px; border-radius:50%;
    animation: pulse-dot 2s infinite;
}
.conn-badge.connected .conn-dot { background:var(--green); box-shadow:0 0 6px var(--green); }
.conn-badge.disconnected .conn-dot { background:var(--red); box-shadow:0 0 6px var(--red); }
@keyframes pulse-dot { 0%,100% { opacity:.5; } 50% { opacity:1; } }

#sidebar-nav { flex:1; padding:10px 8px; overflow-y:auto; }
.nav-btn {
    width:100%; display:flex; align-items:center; gap:10px;
    padding:10px 12px; border:none; border-radius:7px; cursor:pointer;
    background:transparent; color:var(--text-med);
    font-family:var(--font); font-size:13px; font-weight:400;
    transition:all 0.15s; margin-bottom:1px; text-align:left;
    border-left:3px solid transparent;
}
.nav-btn:hover { background:var(--green-05); color:var(--text-light); }
.nav-btn.active {
    background:rgba(0,255,65,0.07); color:var(--green);
    font-weight:600; border-left-color:var(--green);
}
.nav-icon { font-size:15px; width:20px; text-align:center; }

.sidebar-footer { 
    padding:14px; border-top:1px solid var(--border); 
    font-size:9px; color:var(--text-dim); text-align:center; letter-spacing:1px;
}

/* ─── MAIN CONTENT ─── */
#content { flex:1; overflow:auto; position:relative; }

.scanline-overlay {
    position:absolute; inset:0; pointer-events:none; z-index:0;
    background:repeating-linear-gradient(0deg,transparent,transparent 2px,rgba(0,255,65,0.012) 2px,rgba(0,255,65,0.012) 4px);
}

#page-container { position:relative; z-index:1; min-height:100%; }

.page { padding:28px 32px; animation: fadeIn 0.3s ease; }

/* ─── ANIMATIONS ─── */
@keyframes fadeIn { from { opacity:0; transform:translateY(12px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeInUp { from { opacity:0; transform:translateY(18px); } to { opacity:1; transform:translateY(0); } }

.anim-in { animation: fadeInUp 0.35s ease both; }
.anim-delay-1 { animation-delay:0.05s; }
.anim-delay-2 { animation-delay:0.1s; }
.anim-delay-3 { animation-delay:0.15s; }
.anim-delay-4 { animation-delay:0.2s; }
.anim-delay-5 { animation-delay:0.25s; }

/* ─── TYPOGRAPHY ─── */
.page-title { font-size:26px; font-weight:800; color:var(--text-light); margin-bottom:4px; }
.page-desc { color:var(--text-dim); font-size:13px; margin-bottom:28px; }
.section-title { font-size:15px; font-weight:700; color:var(--text-light); margin-bottom:16px; }
.label { 
    font-size:11px; color:var(--text-dim); margin-bottom:6px; 
    font-weight:600; letter-spacing:0.7px; text-transform:uppercase; 
}

/* ─── CARDS ─── */
.card {
    background:var(--bg-card); border:1px solid var(--border);
    border-radius:var(--radius-lg); padding:20px;
    transition:border-color 0.2s, box-shadow 0.2s;
}
.card:hover { border-color:rgba(0,255,65,0.15); }
.card-grid { display:grid; gap:14px; }
.card-grid-2 { grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); }
.card-grid-3 { grid-template-columns:repeat(auto-fill,minmax(220px,1fr)); }
.card-grid-5 { grid-template-columns:repeat(auto-fill,minmax(180px,1fr)); }

/* ─── BUTTONS ─── */
.btn {
    display:inline-flex; align-items:center; justify-content:center; gap:6px;
    padding:9px 18px; border-radius:8px; cursor:pointer;
    font-family:var(--font); font-weight:600; font-size:13px;
    letter-spacing:0.3px; border:1px solid transparent;
    transition:all 0.2s; white-space:nowrap;
}
.btn:disabled { opacity:0.4; cursor:not-allowed; transform:none !important; }

.btn-primary {
    background:linear-gradient(135deg, var(--green-15), var(--green-05));
    border-color:var(--green-30); color:var(--green);
}
.btn-primary:hover:not(:disabled) {
    background:linear-gradient(135deg, var(--green-20), var(--green-10));
    box-shadow:0 0 20px rgba(0,255,65,0.15);
    transform:translateY(-1px);
}

.btn-danger {
    background:linear-gradient(135deg, var(--red-10), rgba(255,68,68,0.03));
    border-color:var(--red-20); color:var(--red);
}
.btn-danger:hover:not(:disabled) {
    background:linear-gradient(135deg, var(--red-20), var(--red-10));
    box-shadow:0 0 20px rgba(255,68,68,0.12);
}

.btn-ghost {
    background:transparent; border-color:var(--border); color:var(--text-med);
}
.btn-ghost:hover { border-color:var(--green-30); color:var(--green); }

.btn-sm { padding:6px 12px; font-size:11px; border-radius:6px; }
.btn-block { width:100%; }
.btn-icon { padding:8px 12px; }

/* ─── INPUTS ─── */
.input {
    background:rgba(0,0,0,0.5); border:1px solid var(--border);
    color:var(--text-light); padding:10px 13px; border-radius:8px;
    font-family:var(--mono); font-size:13px; width:100%;
    transition:border-color 0.2s, box-shadow 0.2s; outline:none;
}
.input:focus { border-color:var(--green-30); box-shadow:0 0 12px rgba(0,255,65,0.08); }
.input::placeholder { color:var(--text-dim); }

textarea.input { resize:vertical; min-height:80px; font-family:var(--font); line-height:1.5; }

select.input {
    appearance:none; cursor:pointer;
    background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2300ff41' viewBox='0 0 16 16'%3E%3Cpath d='M8 12L2 6h12z'/%3E%3C/svg%3E");
    background-repeat:no-repeat; background-position:right 12px center;
    padding-right:34px;
}
select.input option { background:var(--bg-card); color:var(--text-light); }

.input-group { margin-bottom:14px; }
.input-row { display:grid; gap:14px; }
.input-row-2 { grid-template-columns:1fr 1fr; }
.input-row-3 { grid-template-columns:1fr 1fr 1fr; }

/* Range slider */
input[type="range"] { 
    width:100%; accent-color:var(--green); height:6px; 
    background:var(--border); border-radius:3px;
    -webkit-appearance:none; outline:none;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance:none; width:16px; height:16px; border-radius:50%;
    background:var(--green); cursor:pointer; box-shadow:0 0 8px rgba(0,255,65,0.3);
}

/* ─── BADGES ─── */
.badge {
    display:inline-flex; align-items:center; gap:3px;
    padding:3px 9px; border-radius:20px;
    font-size:10px; font-weight:700; letter-spacing:0.5px;
}
.badge-green { background:var(--green-10); color:var(--green); border:1px solid var(--green-20); }
.badge-red { background:var(--red-10); color:var(--red); border:1px solid var(--red-20); }
.badge-yellow { background:rgba(255,200,0,0.1); color:var(--yellow); border:1px solid rgba(255,200,0,0.2); }
.badge-blue { background:rgba(0,150,255,0.1); color:var(--blue); border:1px solid rgba(0,150,255,0.2); }

/* ─── TOAST ─── */
.toast {
    position:fixed; bottom:24px; right:24px; z-index:9999;
    background:var(--bg-card); border:1px solid var(--green-30);
    padding:12px 22px; border-radius:var(--radius);
    color:var(--green); font-weight:600; font-size:13px;
    box-shadow:0 0 30px rgba(0,255,65,0.12);
    animation: fadeInUp 0.3s ease;
    transition: opacity 0.3s;
}
.toast.error { border-color:var(--red-20); color:var(--red); box-shadow:0 0 30px rgba(255,68,68,0.12); }
.toast.hidden { opacity:0; pointer-events:none; }

/* ─── MODAL ─── */
.modal-overlay {
    position:fixed; inset:0; z-index:100;
    background:rgba(0,0,0,0.75); backdrop-filter:blur(4px);
    display:flex; align-items:center; justify-content:center;
    animation: fadeIn 0.2s ease;
}
.modal-overlay.hidden { display:none; }
.modal {
    background:var(--bg-card); border:1px solid var(--green-20);
    border-radius:16px; padding:26px; width:620px; max-width:92vw;
    max-height:88vh; overflow-y:auto;
    box-shadow:0 0 60px rgba(0,255,65,0.08);
    animation: fadeInUp 0.3s ease;
}
.modal-title { font-size:18px; font-weight:800; color:var(--green); margin-bottom:22px; }
.modal-actions { display:flex; gap:10px; justify-content:flex-end; margin-top:20px; }

/* ─── STAT CARDS ─── */
.stat-card { position:relative; overflow:hidden; }
.stat-card .stat-val { 
    font-size:30px; font-weight:800; font-family:var(--mono); line-height:1; 
}
.stat-card .stat-label { font-size:11px; color:var(--text-dim); margin-top:5px; font-weight:500; }
.stat-card .stat-icon { font-size:26px; position:absolute; top:18px; right:18px; }

/* ─── FLOW BUILDER ─── */
.flow-toolbar {
    padding:10px 16px; border-bottom:1px solid var(--border);
    display:flex; align-items:center; gap:10px; flex-shrink:0;
    background:var(--bg-card); flex-wrap:wrap;
}
.flow-toolbar .node-btn {
    padding:4px 10px; border-radius:6px; cursor:pointer;
    font-size:11px; font-weight:600; font-family:var(--font);
    display:inline-flex; align-items:center; gap:4px;
    transition:all 0.15s; border:1px solid;
}
.flow-toolbar .node-btn:hover { transform:translateY(-1px); }

.flow-canvas {
    position:relative; flex:1; overflow:auto;
    background-image:radial-gradient(circle,rgba(0,255,65,0.04) 1px,transparent 1px);
    background-size:28px 28px;
    min-height:500px; cursor:default;
}
.flow-canvas > svg#flow-svg {
    position:absolute; top:0; left:0; width:4000px; height:4000px; 
    pointer-events:none; z-index:1; overflow:visible;
}
.flow-canvas > svg#flow-svg path[style*="pointer-events:stroke"] {
    pointer-events:stroke;
}
#flow-nodes-container { position:relative; z-index:2; }

.flow-node {
    position:absolute; min-width:175px;
    background:var(--bg-card); border:2px solid var(--border);
    border-radius:var(--radius); cursor:grab;
    transition:box-shadow 0.2s;
    user-select:none; z-index:2;
}
.flow-node:hover { box-shadow:0 0 18px rgba(0,255,65,0.12); }
.flow-node.selected { border-color:var(--green); box-shadow:0 0 24px rgba(0,255,65,0.18); }

.flow-node-header {
    padding:9px 12px; border-radius:8px 8px 0 0;
    display:flex; align-items:center; gap:7px;
    font-weight:600; font-size:12px;
}
.flow-node-body { padding:8px 12px; font-size:11px; color:var(--text-med); }
.flow-node-actions {
    margin-left:auto; display:flex; gap:4px;
}
.flow-node-actions span { cursor:pointer; font-size:10px; opacity:0.7; transition:opacity 0.15s; }
.flow-node-actions span:hover { opacity:1; }

.flow-port {
    width:16px; height:16px; border-radius:50%;
    background:var(--bg-surface); border:2px solid var(--green-dim);
    position:absolute; cursor:crosshair; z-index:10;
    transition:all 0.2s;
}
.flow-port:hover { background:var(--green); transform:scale(1.4); box-shadow:0 0 10px rgba(0,255,65,0.4); }
.flow-port.port-out { bottom:-8px; left:50%; transform:translateX(-50%); }
.flow-port.port-in { top:-8px; left:50%; transform:translateX(-50%); }
.flow-port.port-out:hover { transform:translateX(-50%) scale(1.4); }
.flow-port.port-in:hover { transform:translateX(-50%) scale(1.4); }
.flow-port.port-active { border-color:var(--green); background:var(--green-dark); animation:pulse-dot 1s infinite; }

.flow-connecting-hint {
    position:fixed; bottom:70px; left:50%; transform:translateX(-50%); z-index:50;
    background:var(--bg-card); border:1px solid var(--green); border-radius:var(--radius);
    padding:9px 18px; color:var(--green); font-weight:600; font-size:12px;
    box-shadow:0 0 30px rgba(0,255,65,0.18);
    animation:fadeInUp 0.3s ease;
}

/* ─── MESSAGE TYPE TOGGLE ─── */
.type-toggle { display:flex; gap:6px; flex-wrap:wrap; }
.type-btn {
    padding:7px 15px; border-radius:7px; cursor:pointer;
    font-family:var(--font); font-size:12px; font-weight:600;
    border:1px solid var(--border); background:transparent; color:var(--text-med);
    transition:all 0.15s;
}
.type-btn.active { border-color:var(--green); background:var(--green-10); color:var(--green); }
.type-btn:hover:not(.active) { border-color:var(--border-light); color:var(--text); }

/* ─── EMPTY STATE ─── */
.empty-state { text-align:center; padding:50px 20px; }
.empty-icon { font-size:44px; margin-bottom:14px; }
.empty-title { font-size:15px; font-weight:600; color:var(--text-light); margin-bottom:6px; }
.empty-desc { color:var(--text-dim); font-size:13px; margin-bottom:20px; }

/* ─── STEP CARDS ─── */
.step-card {
    display:flex; gap:12px; padding:12px 14px; border-radius:9px;
    background:var(--green-05); border:1px solid rgba(0,255,65,0.07);
}
.step-num {
    width:30px; height:30px; border-radius:7px; flex-shrink:0;
    background:linear-gradient(135deg, var(--green), var(--green-dark));
    display:flex; align-items:center; justify-content:center;
    color:var(--bg); font-weight:800; font-size:13px;
}
.step-title { font-weight:600; font-size:12px; color:var(--text-light); }
.step-desc { font-size:10px; color:var(--text-dim); margin-top:2px; }

/* ─── QR / PAIR CODE ─── */
.qr-display { text-align:center; }
.qr-display img { max-width:260px; border-radius:12px; border:2px solid var(--green); }
.pair-code {
    font-size:34px; font-weight:800; font-family:var(--mono);
    color:var(--green); letter-spacing:6px;
}

/* ─── RESPONSIVE ─── */
@media (max-width:768px) {
    #sidebar { width:60px; min-width:60px; }
    .sidebar-brand > div:last-child, .conn-badge span:last-child, 
    .nav-btn span:not(.nav-icon), .sidebar-footer { display:none; }
    .sidebar-brand { padding:16px 12px; justify-content:center; }
    .conn-badge { margin:8px 6px 0; justify-content:center; }
    .nav-btn { justify-content:center; padding:10px; border-left:none !important; }
    .nav-icon { width:auto; font-size:18px; }
    .page { padding:20px 16px; }
    .input-row-2, .input-row-3 { grid-template-columns:1fr; }
    .card-grid-2, .card-grid-3, .card-grid-5 { grid-template-columns:1fr; }
}