/* Investor Group - investorgroup.uk
   Refined, professional theme for a curated investment opportunities site. */

:root {
  --ink:        #0f1b2d;   /* deep navy */
  --ink-soft:   #1b2c44;
  --paper:      #f7f5f0;   /* warm off-white */
  --paper-2:    #ffffff;
  --gold:       #b8912f;   /* restrained gold accent */
  --gold-soft:  #d8b65a;
  --slate:      #5c6b7a;
  --line:       #e3ddd1;
  --danger-bg:  #fff8e6;
  --danger-bd:  #e7c66b;
  --danger-tx:  #6b5510;
  --maxw:       1120px;
  --serif: Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--serif); font-weight: 600; line-height: 1.2; letter-spacing: -0.01em; }
a { color: var(--gold); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15,27,45,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--paper); font-family: var(--serif); font-size: 20px; letter-spacing: 0.02em; }
.brand:hover { text-decoration: none; }
.brand .mark { width: 30px; height: 30px; border: 1.5px solid var(--gold); border-radius: 50%; display: grid; place-items: center; color: var(--gold); font-size: 14px; font-weight: 700; }
.nav { display: flex; gap: 28px; align-items: center; }
.nav a { color: rgba(247,245,240,0.82); font-size: 14px; letter-spacing: 0.03em; text-transform: uppercase; }
.nav a:hover { color: var(--paper); text-decoration: none; }
.nav .btn { text-transform: none; letter-spacing: 0; }

.btn {
  display: inline-block; cursor: pointer;
  background: var(--gold); color: #1a1303;
  border: 1px solid var(--gold); border-radius: 4px;
  padding: 11px 22px; font-size: 15px; font-weight: 600;
  transition: background .15s ease, transform .05s ease;
}
.btn:hover { background: var(--gold-soft); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--paper); border-color: rgba(247,245,240,0.4); }
.btn.ghost:hover { border-color: var(--paper); background: rgba(255,255,255,0.06); }
.btn.dark { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn.dark:hover { background: var(--ink-soft); }

/* ---------- Hero ---------- */
.hero {
  background:
    linear-gradient(180deg, rgba(15,27,45,0.86), rgba(15,27,45,0.94)),
    radial-gradient(1200px 500px at 70% -10%, #24395b, #0f1b2d 60%);
  color: var(--paper);
  padding: 96px 0 84px;
}
.hero .eyebrow { color: var(--gold-soft); text-transform: uppercase; letter-spacing: 0.18em; font-size: 13px; margin-bottom: 18px; }
.hero h1 { font-size: clamp(34px, 5vw, 56px); margin: 0 0 20px; max-width: 16ch; }
.hero p { font-size: clamp(17px, 2.2vw, 20px); color: rgba(247,245,240,0.82); max-width: 60ch; margin: 0 0 32px; }
.hero .cta-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Sections ---------- */
section { padding: 72px 0; }
.section-head { max-width: 64ch; margin-bottom: 40px; }
.section-head .eyebrow { color: var(--gold); text-transform: uppercase; letter-spacing: 0.16em; font-size: 12px; font-weight: 700; }
.section-head h2 { font-size: clamp(26px, 3.5vw, 38px); margin: 10px 0 14px; }
.section-head p { color: var(--slate); font-size: 17px; margin: 0; }
.alt { background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

/* ---------- Value cards ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--paper-2); border: 1px solid var(--line); border-radius: 8px;
  padding: 28px;
}
.card h3 { margin: 0 0 10px; font-size: 20px; }
.card p { color: var(--slate); margin: 0; font-size: 15px; }
.card .ic { width: 40px; height: 40px; border-radius: 8px; background: var(--ink); color: var(--gold); display: grid; place-items: center; font-size: 18px; margin-bottom: 18px; }

/* ---------- Featured opportunity ---------- */
.feature { display: grid; grid-template-columns: 1.1fr 1fr; gap: 48px; align-items: center; }
.feature .media { background: linear-gradient(135deg, #24395b, #0f1b2d); border-radius: 10px; min-height: 340px; display: grid; place-items: center; color: rgba(247,245,240,0.6); position: relative; overflow: hidden; }
.feature .media .tag { position: absolute; top: 16px; left: 16px; background: var(--gold); color: #1a1303; font-size: 12px; font-weight: 700; padding: 6px 12px; border-radius: 4px; letter-spacing: 0.04em; }
.feature .media .placeholder-note { font-size: 13px; padding: 0 24px; text-align: center; }
.feature .media img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.feature h2 { font-size: clamp(26px, 3.5vw, 36px); margin: 0 0 12px; }
.feature .loc { color: var(--gold); font-weight: 600; letter-spacing: 0.04em; margin-bottom: 16px; }
.feature p { color: var(--slate); margin: 0 0 18px; }
.spec-row { display: flex; gap: 32px; margin: 22px 0 26px; flex-wrap: wrap; }
.spec { }
.spec .k { font-family: var(--serif); font-size: 26px; color: var(--ink); }
.spec .v { font-size: 13px; color: var(--slate); text-transform: uppercase; letter-spacing: 0.06em; }
.locked { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--slate); margin-top: 8px; }

/* ---------- Risk banner ---------- */
.risk {
  background: var(--danger-bg); border: 1px solid var(--danger-bd);
  color: var(--danger-tx); border-radius: 8px; padding: 18px 22px; font-size: 14px;
}
.risk strong { display: block; margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.05em; font-size: 12px; }

/* ---------- Register / form ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field.full { grid-column: 1 / -1; }
label { font-size: 13px; font-weight: 600; color: var(--ink); letter-spacing: 0.02em; }
input, select, textarea {
  font-family: var(--sans); font-size: 15px; padding: 11px 13px;
  border: 1px solid var(--line); border-radius: 6px; background: var(--paper-2); color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--gold-soft); border-color: var(--gold); }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--slate); }
.check input { margin-top: 3px; }

/* ---------- Modal (self-certification gate) ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(8,14,24,0.72);
  display: none; align-items: center; justify-content: center; z-index: 100; padding: 24px;
}
.modal-backdrop.open { display: flex; }
.modal {
  background: var(--paper-2); border-radius: 10px; max-width: 620px; width: 100%;
  max-height: 90vh; overflow-y: auto; padding: 34px; box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.modal h3 { margin: 0 0 6px; font-size: 24px; }
.modal .sub { color: var(--slate); font-size: 14px; margin: 0 0 20px; }
.modal .opt { border: 1px solid var(--line); border-radius: 8px; padding: 16px; margin-bottom: 12px; cursor: pointer; }
.modal .opt:hover { border-color: var(--gold); }
.modal .opt .check { color: var(--ink); }
.modal .opt small { display: block; color: var(--slate); margin-top: 6px; line-height: 1.5; }
.modal .actions { display: flex; gap: 12px; margin-top: 18px; }
.gate-error { color: #a3341f; font-size: 13px; margin-top: 10px; display: none; }

/* ---------- Footer ---------- */
.site-footer { background: var(--ink); color: rgba(247,245,240,0.72); padding: 56px 0 28px; font-size: 14px; }
.site-footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.site-footer h4 { color: var(--paper); font-family: var(--sans); font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; margin: 0 0 14px; }
.site-footer a { color: rgba(247,245,240,0.72); }
.site-footer a:hover { color: var(--paper); }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 8px; }
.legal { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 22px; font-size: 12px; color: rgba(247,245,240,0.5); line-height: 1.6; }
.legal p { margin: 0 0 10px; }

/* ---------- Utilities ---------- */
.center { text-align: center; }
.mt-0 { margin-top: 0; }
.muted { color: var(--slate); }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .feature { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .site-footer .cols { grid-template-columns: 1fr; gap: 28px; }
  .nav { display: none; }
  .nav.mobile-open { display: flex; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; background: var(--ink); padding: 18px 24px; gap: 16px; }
}