:root {
  --bg: #0f1419;
  --bg2: #151b24;
  --card: #1a2230;
  --card2: #222b3a;
  --border: rgba(255,255,255,0.07);
  --green: #00d67d;
  --green-dim: rgba(0,214,125,0.14);
  --green-glow: rgba(0,214,125,0.25);
  --yellow: #ffd600;
  --yellow-glow: rgba(255,214,0,0.22);
  --red: #ff5252;
  --blue: #42a5f5;
  --orange: #ff9800;
  --text: #f0f4f8;
  --muted: #8b95a8;
  --nav-w: 220px;
  --right-w: 300px;
  --header-h: 54px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  height: 100%; background: var(--bg); color: var(--text);
  font-family: Inter, system-ui, -apple-system, sans-serif; font-size: 14px;
  -webkit-font-smoothing: antialiased;
}

/* LOADER — chỉ full-screen khi boot lần đầu */
.loader {
  position: fixed; inset: 0; z-index: 999; background: var(--bg);
  display: none; align-items: center; justify-content: center;
  transition: opacity .25s;
}
.loader.show { display: flex; }
.loader.fade-out { opacity: 0; pointer-events: none; }
.spinner {
  width: 36px; height: 36px; border: 3px solid var(--border);
  border-top-color: var(--green); border-radius: 50%;
  animation: spin .65s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

#toastHost { position: fixed; top: 62px; right: 16px; z-index: 900; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast {
  padding: 10px 14px; border-radius: 8px; font-size: 13px;
  background: var(--card2); border: 1px solid var(--border);
  box-shadow: 0 8px 24px rgba(0,0,0,.35);
  animation: toastIn .25s ease; pointer-events: auto;
}
.toast.err { border-color: rgba(255,82,82,.45); color: #ffb4b4; }
.toast.ok { border-color: rgba(0,214,125,.45); color: #8ef5c8; }
@keyframes toastIn { from { opacity:0; transform:translateX(12px); } }

/* SHELL */
.shell { display: flex; flex-direction: column; height: 100vh; overflow: hidden; }

/* HEADER */
.header {
  height: var(--header-h); background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 18px; flex-shrink: 0;
}
.header-left { display: flex; align-items: center; gap: 14px; }
.hamburger {
  background: none; border: none; color: var(--muted);
  font-size: 18px; cursor: pointer; padding: 6px; display: none;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-icon { color: var(--green); font-size: 18px; }
.brand-name { font-weight: 700; font-size: 14px; letter-spacing: .04em; text-transform: uppercase; }
.brand-name em { color: var(--green); font-style: normal; }

.header-right { display: flex; align-items: center; gap: 10px; }
.hdr-select {
  background: var(--card); border: 1px solid var(--border); color: var(--text);
  border-radius: 6px; padding: 6px 10px; font-size: 12px; cursor: pointer;
}
.hdr-quota {
  font-size: 12px; font-weight: 600; color: var(--text);
  background: var(--card); padding: 5px 11px; border-radius: 6px; border: 1px solid var(--border);
}
.hdr-role {
  font-size: 10px; font-weight: 800; padding: 4px 10px; border-radius: 20px;
  background: var(--card2); color: var(--muted); letter-spacing: .08em;
}
.hdr-role.pro { color: var(--blue); background: rgba(66,165,245,.15); }
.hdr-role.pioneer { color: var(--yellow); background: rgba(255,214,0,.12); }
.hdr-test {
  font-size: 9px; font-weight: 800; padding: 3px 8px; border-radius: 4px;
  background: rgba(255,214,0,.15); color: var(--yellow); letter-spacing: .1em;
}
.btn-logout {
  background: var(--green); color: #0a0f14; border: none; border-radius: 6px;
  padding: 8px 18px; font-weight: 700; font-size: 13px; cursor: pointer;
  transition: filter .15s, transform .1s;
}
.btn-logout:hover { filter: brightness(1.1); }
.btn-logout:active { transform: scale(.98); }

/* BODY */
.body-wrap { display: flex; flex: 1; min-height: 0; overflow: hidden; }

/* NAV */
.nav-side {
  width: var(--nav-w); background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; flex-shrink: 0;
  overflow-y: auto;
}
.nav-list { list-style: none; padding: 10px 0; flex: 1; }
.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 12px 18px; font-size: 13px; font-weight: 500;
  color: var(--muted); cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
  border-left: 3px solid transparent;
}
.nav-item i { width: 18px; text-align: center; font-size: 14px; opacity: .85; }
.nav-item:hover { color: var(--text); background: rgba(255,255,255,.04); }
.nav-item.active {
  color: var(--text); background: var(--green-dim);
  border-left-color: var(--green); font-weight: 600;
}
.nav-item.active i { color: var(--green); opacity: 1; }

.pro-card {
  margin: 10px 12px 14px; padding: 14px 14px 16px;
  background: linear-gradient(145deg, var(--card) 0%, #161d28 100%);
  border: 1px solid var(--border); border-radius: 10px;
}
.pro-title { font-size: 11px; font-weight: 800; color: var(--green); margin-bottom: 6px; letter-spacing: .04em; }
.pro-title i { margin-right: 5px; color: var(--yellow); }
.pro-card p { font-size: 11px; color: var(--muted); margin-bottom: 12px; line-height: 1.5; }
.btn-upgrade {
  width: 100%; padding: 10px; border-radius: 6px;
  background: transparent; border: 1.5px solid var(--green);
  color: var(--green); font-weight: 700; font-size: 12px; cursor: pointer;
  transition: background .15s, color .15s;
}
.btn-upgrade:hover { background: var(--green-dim); }

/* MAIN */
.main-area { flex: 1; overflow: hidden; position: relative; background: var(--bg); }
.page-view {
  display: none; height: 100%; overflow: hidden;
}
.page-view.active {
  display: flex; gap: 14px; padding: 14px;
}

.center-col {
  flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 14px;
  overflow-y: auto; overflow-x: hidden;
  scrollbar-width: thin; scrollbar-color: var(--card2) transparent;
}
.center-col::-webkit-scrollbar { width: 6px; }
.center-col::-webkit-scrollbar-thumb { background: var(--card2); border-radius: 3px; }

.right-col {
  width: var(--right-w); flex-shrink: 0; display: flex; flex-direction: column; gap: 14px;
  overflow-y: auto;
}

/* CARDS */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 18px;
  box-shadow: 0 2px 12px rgba(0,0,0,.18);
}
.card-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; color: var(--muted); margin-bottom: 14px;
  display: flex; align-items: center; gap: 8px;
}
.card-title i { color: var(--green); font-size: 12px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.form-group label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; font-weight: 500; }
.form-group select {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  background: var(--bg); border: 1px solid var(--border); color: var(--text);
  font-size: 13px; cursor: pointer; transition: border-color .15s;
}
.form-group select:hover, .form-group select:focus { border-color: rgba(0,214,125,.35); outline: none; }
.form-group select option { background: var(--bg2); }

.method-box {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 12px 14px; margin-bottom: 14px;
}
.method-label { font-size: 11px; color: var(--muted); display: block; margin-bottom: 8px; font-weight: 500; }
.method-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.regime-pill {
  font-size: 10px; font-weight: 800; padding: 4px 10px; border-radius: 4px;
  letter-spacing: .07em; flex-shrink: 0; text-transform: uppercase;
}
.regime-pill.trend { background: rgba(66,165,245,.18); color: var(--blue); }
.regime-pill.range { background: rgba(171,71,188,.18); color: #ce93d8; }
.regime-pill.shock { background: rgba(255,82,82,.2); color: var(--red); }
.regime-pill.transition { background: rgba(255,152,0,.18); color: var(--orange); }
.method-desc { font-size: 13px; color: var(--text); line-height: 1.4; }

/* Nút cạnh nhau như mockup */
.btn-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.btn-analyze {
  padding: 13px 12px; border: none; border-radius: 8px;
  background: var(--green); color: #0a0f14; font-weight: 700; font-size: 13px;
  cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: filter .15s, transform .1s; white-space: nowrap;
}
.btn-analyze:hover { filter: brightness(1.08); }
.btn-analyze:active { transform: scale(.98); }
.btn-analyze:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-analyze.loading { pointer-events: none; opacity: .75; }

.btn-scalp {
  padding: 13px 12px; border: none; border-radius: 8px;
  background: var(--yellow); color: #1a1a00; font-weight: 700; font-size: 13px;
  cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px;
  box-shadow: 0 0 18px var(--yellow-glow);
  transition: filter .15s, transform .1s, box-shadow .15s; white-space: nowrap;
}
.btn-scalp:hover { filter: brightness(1.06); box-shadow: 0 0 24px var(--yellow-glow); }
.btn-scalp:active { transform: scale(.98); }

/* RESULTS */
.result-inner {
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 14px 16px;
}
.result-regime {
  font-size: 13px; color: var(--muted); margin-bottom: 10px;
  display: flex; align-items: center; gap: 8px;
}
.result-regime i { color: var(--green); font-size: 12px; }
.result-regime b { color: var(--text); font-weight: 700; }
.result-empty {
  font-size: 13px; color: var(--muted); line-height: 1.65;
  display: flex; align-items: flex-start; gap: 8px;
}
.result-empty i { color: var(--blue); margin-top: 2px; flex-shrink: 0; }
.result-footer {
  margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border);
  font-size: 11px; color: var(--muted); letter-spacing: .02em;
}

.scan-status {
  font-size: 12px; color: var(--muted); margin-bottom: 10px; line-height: 1.55;
  padding: 8px 10px; border-radius: 6px; background: rgba(255,255,255,.02);
  border: 1px dashed var(--border);
}
.scan-status.done {
  border-style: solid; border-color: rgba(0,214,125,.25);
  background: rgba(0,214,125,.06); color: var(--text);
}
.scan-status.scanning {
  border-color: rgba(255,214,0,.3); background: rgba(255,214,0,.06);
}
.scan-status i { margin-right: 6px; }
.scan-status b { color: var(--green); }
.scan-hint b { color: var(--green); }

.no-signal-reason {
  margin-top: 8px; padding: 10px 12px; border-radius: 6px;
  background: rgba(255,82,82,.08); border: 1px solid rgba(255,82,82,.2);
  font-size: 12px; color: #ffb4b4; line-height: 1.55;
}
.no-signal-reason.neutral {
  background: rgba(66,165,245,.08); border-color: rgba(66,165,245,.2); color: #a8d4ff;
}

.card-result.analyzing { opacity: .85; }
.card-result.flash-ok { animation: resultFlash .6s ease; }
@keyframes resultFlash {
  0% { box-shadow: 0 0 0 rgba(0,214,125,0); }
  40% { box-shadow: 0 0 0 3px rgba(0,214,125,.35); }
  100% { box-shadow: 0 0 0 rgba(0,214,125,0); }
}

.signal-item {
  background: rgba(255,255,255,.02); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px; margin-bottom: 8px;
}
.signal-item.buy { border-left: 3px solid var(--green); }
.signal-item.sell { border-left: 3px solid var(--red); }
.sig-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.sig-side { font-weight: 800; font-size: 15px; }
.sig-side.buy { color: var(--green); }
.sig-side.sell { color: var(--red); }
.sig-grade {
  font-size: 11px; font-weight: 800; padding: 3px 8px; border-radius: 4px;
  background: rgba(255,214,0,.15); color: var(--yellow);
}
.sig-prices { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; font-size: 12px; }
.sig-prices small { display: block; color: var(--muted); font-size: 10px; margin-bottom: 2px; }

/* CHART — chiếm phần lớn cột giữa */
.chart-card { flex: 1; min-height: 360px; display: flex; flex-direction: column; }
.chart-subtitle {
  font-size: 12px; color: var(--muted); margin: -6px 0 10px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
}
.live-price {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text);
}
.live-price b { font-size: 15px; font-weight: 800; color: var(--green); font-variant-numeric: tabular-nums; }
.live-price b.down { color: var(--red); }
.live-price small { font-size: 11px; font-weight: 600; }
.live-price small.up { color: var(--green); }
.live-price small.down { color: var(--red); }
.live-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--green);
  box-shadow: 0 0 8px var(--green-glow);
  animation: livePulse 1.4s ease-in-out infinite;
}
@keyframes livePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .45; transform: scale(.85); }
}
.chart-wrap {
  flex: 1; position: relative; min-height: 300px;
  background: #0c1018; border-radius: 8px; border: 1px solid var(--border);
}
#chart { position: absolute; inset: 0; border-radius: 8px; overflow: hidden; }
.chart-ph {
  position: absolute; inset: 0; display: grid; place-items: center;
  color: var(--muted); font-size: 13px; z-index: 2;
  background: rgba(12,16,24,.6);
}
.chart-ph.hidden { display: none; }
.chart-legend { display: flex; gap: 18px; margin-top: 10px; font-size: 11px; color: var(--muted); }
.leg { display: inline-block; width: 18px; height: 3px; border-radius: 2px; margin-right: 5px; vertical-align: middle; }
.leg.orange { background: var(--orange); }
.leg.blue { background: var(--blue); }

/* RIGHT */
.notif-list { list-style: none; }
.notif-list li {
  display: flex; gap: 10px; align-items: flex-start;
  font-size: 12px; color: var(--muted); line-height: 1.55;
  padding: 9px 0; border-bottom: 1px solid var(--border);
}
.notif-list li:last-child { border-bottom: none; }
.notif-list li i { color: var(--green); margin-top: 3px; flex-shrink: 0; font-size: 11px; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.stats-wide { max-width: 400px; }
.stat-box {
  background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 10px; text-align: center;
}
.stat-box span { display: block; font-size: 10px; color: var(--muted); text-transform: uppercase; margin-bottom: 6px; letter-spacing: .04em; }
.stat-box b { font-size: 22px; font-weight: 800; color: var(--green); line-height: 1; }
.stat-box b.up { color: var(--green); }
.stat-box b.down { color: var(--red); }

.bot-list { list-style: none; }
.bot-list li {
  display: flex; justify-content: space-between; align-items: center;
  padding: 7px 0; border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.bot-list li:last-child { border-bottom: none; }
.bot-list li span { color: var(--muted); }
.bot-list li em { font-style: normal; font-weight: 600; color: var(--text); font-size: 12px; }
.bot-active { color: var(--green) !important; font-weight: 800 !important; text-transform: uppercase; font-size: 11px !important; }
.api-ok { color: var(--green) !important; }
.api-ok i { font-size: 7px; margin-right: 5px; vertical-align: middle; }

.btn-config {
  width: 100%; margin-top: 12px; padding: 11px; border-radius: 8px;
  background: var(--card2); border: 1px solid var(--border); color: var(--text);
  font-size: 13px; font-weight: 600; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: border-color .15s, background .15s;
}
.btn-config:hover { border-color: rgba(0,214,125,.35); background: rgba(0,214,125,.06); }

.card-bot { flex-shrink: 0; }

/* SUB PAGES */
.sub-page { padding: 24px; max-width: 720px; overflow-y: auto; height: 100%; }
.sub-page h2 { font-size: 20px; margin-bottom: 12px; color: var(--green); }
.sub-page p { color: var(--muted); margin-bottom: 16px; line-height: 1.65; }
.guide-list { color: var(--muted); line-height: 2.2; padding-left: 20px; }
.guide-list b { color: var(--green); }
.history-box, .log-box {
  background: var(--card); border: 1px solid var(--border); border-radius: 8px;
  padding: 16px; font-size: 13px; color: var(--muted); min-height: 120px;
}

/* MODAL */
.modal-bg {
  position: fixed; inset: 0; background: rgba(0,0,0,.72);
  display: none; align-items: center; justify-content: center; z-index: 200; padding: 16px;
  backdrop-filter: blur(4px);
}
.modal-bg.open { display: flex; }
.modal {
  background: var(--card); border: 1px solid var(--border); border-radius: 12px;
  padding: 20px; width: 100%; max-width: 500px;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
}
.modal-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-head h3 { font-size: 16px; display: flex; align-items: center; gap: 8px; }
.modal-head button { background: none; border: none; color: var(--muted); font-size: 20px; cursor: pointer; }
.modal textarea {
  width: 100%; background: var(--bg); border: 1px solid var(--border); border-radius: 8px;
  color: var(--text); padding: 12px; font-family: inherit; font-size: 14px;
  resize: vertical; margin-bottom: 10px;
}
.ai-answer { margin-top: 12px; font-size: 13px; color: var(--muted); line-height: 1.65; white-space: pre-wrap; max-height: 280px; overflow-y: auto; }

/* AUTH */
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: var(--bg); }
.auth-card { width: 100%; max-width: 400px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 28px; }
.auth-logo { text-align: center; font-size: 28px; color: var(--green); margin-bottom: 8px; }
.auth-title { text-align: center; font-size: 18px; font-weight: 700; margin-bottom: 20px; }
.form-input { width: 100%; padding: 11px 12px; border-radius: 8px; background: var(--bg); border: 1px solid var(--border); color: var(--text); font-size: 14px; margin-bottom: 12px; }
.form-label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.form-msg { font-size: 13px; margin-top: 8px; }
.form-msg.err { color: var(--red); }
.form-msg.ok { color: var(--green); }
.form-link { text-align: center; margin-top: 14px; font-size: 13px; color: var(--muted); }
.form-link a { color: var(--green); }
.hero-page { min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 40px 20px; }
.hero-page h1 { font-size: 2.5rem; font-weight: 800; margin: 16px 0; }
.hero-page h1 em { color: var(--green); font-style: normal; }
.hero-page p { color: var(--muted); max-width: 520px; line-height: 1.7; margin-bottom: 24px; }
.hero-btns { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

@media (max-width: 1100px) {
  .page-view.active { flex-direction: column; overflow-y: auto; }
  .center-col, .right-col { overflow: visible; }
  .right-col { width: 100%; }
  .hamburger { display: block; }
  .nav-side {
    position: fixed; left: -240px; top: var(--header-h); bottom: 0; z-index: 100;
    transition: left .25s ease; box-shadow: 4px 0 24px rgba(0,0,0,.4);
  }
  .nav-side.open { left: 0; }
}

@media (max-width: 640px) {
  .form-row, .btn-row { grid-template-columns: 1fr; }
  .header-right .hdr-select { display: none; }
  .brand-name { font-size: 12px; }
}