/* ================================================================
   AlgoBot — Main Stylesheet
   Dark theme, professional trading UI
================================================================ */
:root {
  --bg:      #0a0f1e;
  --card:    #111827;
  --card2:   #1a2235;
  --border:  #1f2d45;
  --text:    #e2e8f0;
  --muted:   #64748b;
  --green:   #10b981;
  --red:     #ef4444;
  --blue:    #3b82f6;
  --amber:   #f59e0b;
  --purple:  #8b5cf6;
  --radius:  12px;
  --shadow:  0 4px 24px rgba(0,0,0,.4);
  --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  min-height: 100vh;
}

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

/* ================================================================
   NAVBAR
================================================================ */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  height: 56px;
  background: rgba(17,24,39,.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-brand {
  font-size: 17px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--green), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -.3px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 13px;
  transition: all .2s;
}

.nav-links a:hover,
.nav-links a.active { color: var(--text); background: var(--card2); }

.btn-logout {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  margin-left: 8px;
  transition: all .2s;
}
.btn-logout:hover { color: var(--red); border-color: var(--red); }

/* ================================================================
   LAYOUT
================================================================ */
.main-content {
  padding: 20px 24px;
  max-width: 1400px;
  margin: 0 auto;
}

.page-wrap { max-width: 920px; margin: 0 auto; }

h1 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

h2 { font-size: 15px; font-weight: 600; color: var(--muted); margin-bottom: 14px; }

/* ================================================================
   CARDS
================================================================ */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: border-color .2s;
}
.card:hover { border-color: rgba(59,130,246,.2); }

/* ================================================================
   AUTH PAGE
================================================================ */
.auth-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 20px;
  background: radial-gradient(ellipse at 50% 0%, rgba(59,130,246,.08) 0%, transparent 70%);
}

.auth-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
}

.auth-logo {
  font-size: 26px;
  font-weight: 800;
  text-align: center;
  margin-bottom: 4px;
  background: linear-gradient(135deg, var(--green), var(--blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-sub {
  color: var(--muted);
  text-align: center;
  margin-bottom: 28px;
  font-size: 13px;
}

.tab-row {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  background: var(--bg);
  padding: 4px;
  border-radius: 10px;
}

.tab {
  flex: 1;
  padding: 8px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
  transition: all .2s;
}
.tab.active { background: var(--blue); color: #fff; }

/* ================================================================
   INPUTS & FORMS
================================================================ */
.inp {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  margin-bottom: 12px;
  outline: none;
  transition: border-color .2s;
  font-family: inherit;
}
.inp:focus     { border-color: var(--blue); }
.inp:disabled  { opacity: .5; cursor: not-allowed; }
.inp.invalid   { border-color: var(--red); }
textarea.inp   { resize: vertical; min-height: 80px; }

/* Inline field validation error — reusable across every form in the app */
.field-error { color: var(--red); font-size: 11.5px; margin: -8px 0 10px 2px; display: none; }
.field-error.show { display: block; }
select.inp     { cursor: pointer; appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L2 5h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}
@media(max-width:600px) { .form-grid { grid-template-columns: 1fr; } }

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
}
label .inp { margin-bottom: 0; }

/* ================================================================
   BUTTONS
================================================================ */
.btn-primary {
  width: 100%;
  padding: 11px;
  background: var(--blue);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s, transform .1s;
  font-family: inherit;
}
.btn-primary:hover   { opacity: .88; }
.btn-primary:active  { transform: scale(.98); }
.btn-primary:disabled { opacity: .4; cursor: not-allowed; }
.w100 { width: 100%; }

/* ================================================================
   MESSAGES
================================================================ */
.msg {
  margin-top: 10px;
  padding: 9px 14px;
  border-radius: 8px;
  font-size: 13px;
  min-height: 0;
}
.msg:empty    { display: none; }
.msg.success  { background: rgba(16,185,129,.12); color: var(--green); border: 1px solid rgba(16,185,129,.3); }
.msg.error    { background: rgba(239,68,68,.12);  color: var(--red);   border: 1px solid rgba(239,68,68,.3); }
.msg.info     { background: rgba(59,130,246,.12); color: var(--blue);  border: 1px solid rgba(59,130,246,.3); }

/* ================================================================
   BADGES & TAGS
================================================================ */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-target   { background: rgba(16,185,129,.15);  color: var(--green); }
.badge-sl       { background: rgba(239,68,68,.15);   color: var(--red);   }
.badge-running  { background: rgba(16,185,129,.15);  color: var(--green); }
.badge-stopped  { background: rgba(100,116,139,.12); color: var(--muted); }
.badge-manual   { background: rgba(139,92,246,.15);  color: var(--purple);}
.badge-paper    { background: rgba(245,158,11,.15);  color: var(--amber); }

.tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 20px;
  font-size: 10px;
  font-weight: 700;
  margin-left: 6px;
  vertical-align: middle;
}
.tag-new  { background: rgba(16,185,129,.15); color: var(--green); }
.tag-warn { background: rgba(245,158,11,.15); color: var(--amber); }

/* ================================================================
   TABLES
================================================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table th {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .4px;
  white-space: nowrap;
}
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(31,45,69,.6);
  vertical-align: middle;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(255,255,255,.02); }
.data-table .green { color: var(--green); font-weight: 600; }
.data-table .red   { color: var(--red);   font-weight: 600; }

/* ================================================================
   PAGINATION
================================================================ */
.pagination {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 14px;
  font-size: 13px;
}
.pagination button {
  padding: 6px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  cursor: pointer;
  transition: background .2s;
}
.pagination button:hover    { background: var(--card2); }
.pagination button:disabled { opacity: .4; cursor: not-allowed; }
.pagination span            { color: var(--muted); }

/* ================================================================
   UTILITIES
================================================================ */
.muted   { color: var(--muted); }
.green   { color: var(--green); }
.red     { color: var(--red);   }
.amber   { color: var(--amber); }
.center  { text-align: center; }
.bold    { font-weight: 700; }
code {
  background: var(--card2);
  padding: 2px 7px;
  border-radius: 5px;
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--blue);
}
p.muted { line-height: 1.7; font-size: 13px; margin-bottom: 12px; }

/* ================================================================
   SETTINGS PAGE EXTRAS
================================================================ */
.warn {
  background: rgba(245,158,11,.1);
  border: 1px solid rgba(245,158,11,.4);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--amber);
  margin-top: 8px;
}

.mode-toggle { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.mode-opt    { flex: 1; min-width: 200px; cursor: pointer; }
.mode-opt input[type=radio] { display: none; }
.mode-label {
  display: block;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  transition: all .2s;
  cursor: pointer;
}
.mode-opt input:checked + .mode-label.paper { border-color: var(--amber); background: rgba(245,158,11,.07); }
.mode-opt input:checked + .mode-label.live  { border-color: var(--red);   background: rgba(239,68,68,.07);  }
.mode-label small { display: block; font-size: 11px; color: var(--muted); margin-top: 4px; font-weight: 400; }

.chk-row   { display: flex; gap: 16px; flex-wrap: wrap; margin: 12px 0; }
.chk-label { display: flex; align-items: center; gap: 6px; font-size: 13px;
  color: var(--text); cursor: pointer; font-weight: 400; }
.chk-label input { width: 15px; height: 15px; accent-color: var(--green); cursor: pointer; }

.btn-test {
  padding: 10px 18px;
  background: rgba(59,130,246,.12);
  color: var(--blue);
  border: 1px solid rgba(59,130,246,.4);
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s;
}
.btn-test:hover { background: rgba(59,130,246,.22); }

.save-row {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
}
.save-row .btn-primary { width: auto; flex: 1; }

/* ================================================================
   ADMIN PAGE
================================================================ */
.admin-user-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.admin-btn {
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 11px;
  cursor: pointer;
  transition: all .2s;
}
.admin-btn:hover           { background: var(--card2); }
.admin-btn.danger          { border-color: var(--red);  color: var(--red); }
.admin-btn.danger:hover    { background: rgba(239,68,68,.1); }
.admin-btn.success         { border-color: var(--green); color: var(--green); }
.admin-btn.success:hover   { background: rgba(16,185,129,.1); }

/* ================================================================
   TABLES — horizontal scroll wrapper for mobile
================================================================ */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-wrap .data-table { min-width: 600px; }

/* ================================================================
   RESPONSIVE
================================================================ */
@media(max-width: 768px) {
  .main-content { padding: 12px; }
  .navbar {
    padding: 8px 12px;
    height: auto;
    flex-wrap: wrap;
    gap: 8px;
    row-gap: 6px;
  }
  .nav-brand { font-size: 15px; flex: 1 1 100%; text-align: center; order: -1; }
  .nav-links {
    flex: 1 1 100%;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2px;
  }
  .nav-links a { padding: 6px 10px; font-size: 12px; }
  .btn-logout  { padding: 6px 10px; font-size: 12px; margin-left: 4px; }
  h1 { font-size: 18px; }

  .card { padding: 14px 14px; }

  /* Force any 2-4 column grids to stack on phones */
  .stat-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .form-grid   { grid-template-columns: 1fr; }
}

@media(max-width: 420px) {
  .stat-grid-4 { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .mini-val    { font-size: 18px; }
  .auth-box    { padding: 28px 20px; }
  .nav-links a { padding: 5px 8px; font-size: 11px; }
}