/* =====================================================================
   Sequoia Trading International — design tokens
   Palette echoes the investor deck: charcoal + gold + restrained accents.
   ===================================================================== */
:root {
  /* Color */
  --color-bg:       #0E1116;
  --color-surface:  #161A21;
  --color-surface2: #1E232C;
  --color-border:   #2A2F39;
  --color-text:     #E6E4DD;
  --color-muted:    #9A9B97;
  --color-faint:    #5C5E64;
  --color-gold:     #C9A24A;
  --color-gold-dk:  #8E6F25;
  --color-gold-soft:#E6C97A;
  --color-teal:     #4F98A3;
  --color-red:      #D16A6A;

  /* Type — DM Sans (display) + Inter (body), same as PDF deck */
  --font-display: "DM Sans", system-ui, sans-serif;
  --font-body:    "Inter", system-ui, sans-serif;

  /* Fluid type scale */
  --text-xs:   clamp(0.72rem, 0.70rem + 0.10vw, 0.80rem);
  --text-sm:   clamp(0.84rem, 0.80rem + 0.20vw, 0.94rem);
  --text-base: clamp(0.95rem, 0.90rem + 0.25vw, 1.06rem);
  --text-lg:   clamp(1.10rem, 1.00rem + 0.50vw, 1.30rem);
  --text-xl:   clamp(1.45rem, 1.20rem + 1.20vw, 2.00rem);
  --text-2xl:  clamp(2.00rem, 1.50rem + 2.50vw, 3.20rem);
  --text-3xl:  clamp(2.60rem, 1.70rem + 4.20vw, 4.80rem);
  --text-hero: clamp(3.20rem, 2.00rem + 5.50vw, 6.40rem);

  /* Spacing — 4px scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Layout */
  --max-width: 78rem;       /* 1248px */
  --max-text: 38rem;        /* 65ch prose */
  --radius-sm: 4px;
  --radius:    8px;
  --radius-lg: 14px;
  --shadow-card: 0 1px 0 rgba(255,255,255,0.03) inset, 0 12px 28px -16px rgba(0,0,0,0.6);

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ====================================== Layout ====================================== */
.container { width: 100%; max-width: var(--max-width); margin-inline: auto; padding-inline: clamp(1.25rem, 4vw, 2.5rem); }
section { padding-block: clamp(var(--space-16), 9vw, var(--space-32)); position: relative; }
.eyebrow {
  font-family: var(--font-display); font-weight: 600; text-transform: uppercase;
  letter-spacing: 0.18em; font-size: var(--text-xs); color: var(--color-gold);
  display: inline-flex; align-items: center; gap: 0.6rem;
}
.eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--color-gold); display: inline-block; }
.section-head { display: flex; flex-direction: column; gap: 1rem; max-width: 56rem; margin-bottom: clamp(var(--space-12), 6vw, var(--space-20)); }
.section-head h2 { font-size: var(--text-2xl); }
.section-head p { color: var(--color-muted); max-width: var(--max-text); font-size: var(--text-lg); }

/* ====================================== Header ====================================== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding-block: var(--space-4);
  background: rgba(14, 17, 22, 0.4);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.header.scrolled { background: rgba(14, 17, 22, 0.85); border-bottom-color: var(--color-border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-8); }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; }
.brand-mark { width: 28px; height: 28px; color: var(--color-gold); }
.brand-name {
  font-family: var(--font-display); font-weight: 600;
  font-size: 0.95rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text);
  white-space: nowrap;
}
.brand-name .accent { color: var(--color-gold); }
@media (max-width: 520px) {
  .brand-name { font-size: 0.8rem; letter-spacing: 0.12em; }
  .brand-name .accent-long { display: none; }
}
.nav { display: flex; gap: var(--space-8); align-items: center; }
.nav a { font-size: var(--text-sm); color: var(--color-muted); transition: color 0.2s; }
.nav a:hover { color: var(--color-text); }
.nav .cta {
  color: var(--color-bg); background: var(--color-gold); padding: 0.55rem 1rem;
  border-radius: var(--radius-sm); font-weight: 500;
  transition: background 0.2s, transform 0.2s;
}
.nav .cta:hover { background: var(--color-gold-soft); transform: translateY(-1px); color: var(--color-bg); }
.menu-toggle { display: none; color: var(--color-text); width: 40px; height: 40px; }
@media (max-width: 820px) {
  .nav { display: none; }
  .menu-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav.open {
    display: flex; flex-direction: column; gap: var(--space-6);
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--color-bg); padding: var(--space-8); border-top: 1px solid var(--color-border);
  }
}

/* ====================================== Hero ====================================== */
.hero {
  min-height: 100svh; position: relative; padding-top: clamp(8rem, 16vw, 11rem); padding-bottom: clamp(4rem, 9vw, 7rem);
  display: flex; align-items: flex-end;
  overflow: hidden; isolation: isolate;
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2;
  background-image: url("./assets/hero-orinoco.png");
  background-size: cover; background-position: center 35%;
  transform: scale(1.05);
}
.hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(14,17,22,0.85) 0%, rgba(14,17,22,0.55) 35%, rgba(14,17,22,0.95) 100%),
    linear-gradient(90deg, rgba(14,17,22,0.7) 0%, rgba(14,17,22,0) 60%);
}
.hero .container { width: 100%; }
.hero-eyebrow { margin-bottom: var(--space-6); }
.hero h1 {
  font-size: var(--text-hero); line-height: 1.02; letter-spacing: -0.025em;
  max-width: 22ch; font-weight: 600;
}
.hero h1 .gold { color: var(--color-gold); font-style: normal; }
.hero p.lede {
  margin-top: var(--space-8); font-size: var(--text-lg);
  color: var(--color-text); max-width: 56ch; line-height: 1.55;
}
.hero-actions { display: flex; gap: var(--space-4); margin-top: var(--space-12); flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.85rem 1.5rem; border-radius: var(--radius-sm);
  font-size: var(--text-sm); font-weight: 500; letter-spacing: 0.02em;
  transition: transform 0.2s var(--ease), background 0.2s, border-color 0.2s, color 0.2s;
}
.btn-primary { background: var(--color-gold); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-gold-soft); transform: translateY(-2px); }
.btn-ghost { border: 1px solid var(--color-border); color: var(--color-text); }
.btn-ghost:hover { border-color: var(--color-gold); color: var(--color-gold); }
.btn .arrow { transition: transform 0.2s; }
.btn:hover .arrow { transform: translateX(3px); }

.hero-meta {
  position: absolute; left: 0; right: 0; bottom: 0;
  border-top: 1px solid var(--color-border);
  background: rgba(14,17,22,0.6);
  backdrop-filter: blur(12px);
  padding-block: var(--space-6);
}
.hero-meta .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-8); }
.hero-meta .kpi-label { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-muted); }
.hero-meta .kpi-val { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-text); margin-top: 0.25rem; font-feature-settings: "tnum" 1; }
.hero-meta .kpi-val .unit { color: var(--color-gold); margin-left: 0.2rem; font-size: 0.85em; }
@media (max-width: 720px) {
  .hero-meta .container { grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
}

/* ====================================== Minerals grid ====================================== */
.minerals { background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-surface) 100%); }
.minerals-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1px;
  background: var(--color-border); border: 1px solid var(--color-border); border-radius: var(--radius);
  overflow: hidden;
}
.mineral-card {
  background: var(--color-surface); padding: var(--space-8); display: flex; flex-direction: column; gap: 0.9rem;
  transition: background 0.25s var(--ease), transform 0.25s var(--ease);
}
.mineral-card:hover { background: var(--color-surface2); }
.mineral-card .phase {
  font-size: var(--text-xs); font-family: var(--font-display); font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
}
.phase.p1 { color: var(--color-gold); }
.phase.p2 { color: var(--color-teal); }
.phase.p3 { color: #A86FDF; }
.phase.watch { color: var(--color-faint); }
.mineral-card h3 { font-size: var(--text-lg); color: var(--color-text); }
.mineral-card .reserves { color: var(--color-muted); font-size: var(--text-sm); }
.mineral-card .row {
  display: flex; justify-content: space-between; font-size: var(--text-xs);
  color: var(--color-muted); padding-top: 0.75rem; border-top: 1px solid var(--color-border); margin-top: auto;
}
.mineral-card .row b { color: var(--color-text); font-weight: 500; }

/* ====================================== Editorial split ====================================== */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: center; }
@media (max-width: 880px) { .split { grid-template-columns: 1fr; } }
.split .text > * + * { margin-top: var(--space-4); }
.split .text h2 { font-size: var(--text-2xl); }
.split .text p { color: var(--color-muted); font-size: var(--text-base); max-width: 56ch; }
.split .text p strong { color: var(--color-text); font-weight: 500; }
.split img.figure {
  border-radius: var(--radius-lg); aspect-ratio: 4/3; object-fit: cover;
  box-shadow: var(--shadow-card);
}
.split-caption {
  margin-top: var(--space-4); font-size: var(--text-xs); color: var(--color-muted); letter-spacing: 0.04em;
}

/* ====================================== Capabilities (3-up) ====================================== */
.capabilities { background: var(--color-surface); }
.caps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
@media (max-width: 880px) { .caps-grid { grid-template-columns: 1fr; } }
.cap-card {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-8); display: flex; flex-direction: column; gap: 1rem; position: relative; overflow: hidden;
}
.cap-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold-dk) 100%);
}
.cap-card .num {
  font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-gold); line-height: 1; font-feature-settings: "tnum" 1;
}
.cap-card h3 { font-size: var(--text-lg); }
.cap-card p { color: var(--color-muted); font-size: var(--text-sm); line-height: 1.6; }
.cap-card ul { margin-top: 0.5rem; }
.cap-card ul li {
  position: relative; padding-left: 1.2rem; color: var(--color-text); font-size: var(--text-sm); line-height: 1.7;
}
.cap-card ul li::before {
  content: ""; position: absolute; left: 0; top: 0.65em; width: 6px; height: 1px; background: var(--color-gold);
}

/* ====================================== License band ====================================== */
.license {
  background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-bg) 100%);
}
.license-card {
  border: 1px solid var(--color-gold-dk); background: var(--color-surface2);
  border-radius: var(--radius-lg); padding: clamp(var(--space-8), 4vw, var(--space-16));
  position: relative; overflow: hidden;
}
.license-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--color-gold);
}
.license-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--space-12); align-items: start; }
@media (max-width: 880px) { .license-grid { grid-template-columns: 1fr; } }
.license h2 { font-size: var(--text-2xl); margin-bottom: var(--space-6); }
.license .body p { color: var(--color-muted); font-size: var(--text-base); max-width: 60ch; }
.license .body p + p { margin-top: var(--space-4); }
.license .body p strong { color: var(--color-gold); font-weight: 500; }
.license .list { border-left: 2px solid var(--color-gold-dk); padding-left: var(--space-6); }
.license .list dt { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-muted); }
.license .list dd { color: var(--color-text); font-size: var(--text-sm); margin-bottom: var(--space-4); margin-top: 0.25rem; }

/* ====================================== Partnerships list ====================================== */
.partners-list { display: flex; flex-direction: column; }
.partner-row {
  display: grid; grid-template-columns: 5rem 1fr 1.5fr 11rem; gap: var(--space-6); align-items: center;
  padding-block: var(--space-8); border-top: 1px solid var(--color-border);
  transition: background 0.2s;
}
.partner-row:last-child { border-bottom: 1px solid var(--color-border); }
.partner-row:hover { background: var(--color-surface); }
.partner-row .pnum {
  font-family: var(--font-display); font-size: var(--text-xl); color: var(--color-gold); font-weight: 600; font-feature-settings: "tnum" 1;
}
.partner-row .pname { font-size: var(--text-lg); font-family: var(--font-display); font-weight: 600; color: var(--color-text); }
.partner-row .ptag { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-muted); margin-top: 0.4rem; }
.partner-row .pdesc { color: var(--color-muted); font-size: var(--text-sm); line-height: 1.6; }
.partner-row .pmeta { text-align: right; font-size: var(--text-xs); color: var(--color-muted); }
.partner-row .pmeta b { color: var(--color-gold); display: block; font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; margin-bottom: 0.2rem; font-feature-settings: "tnum" 1; }
@media (max-width: 880px) {
  .partner-row { grid-template-columns: 3rem 1fr; gap: var(--space-4); }
  .partner-row .pdesc, .partner-row .pmeta { grid-column: 2; }
  .partner-row .pmeta { text-align: left; }
}

/* ====================================== Leadership ====================================== */
.leadership { background: var(--color-surface); }
.leaders-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
@media (max-width: 720px) { .leaders-grid { grid-template-columns: 1fr; } }
.leader-card {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-8); display: flex; flex-direction: column; gap: var(--space-3);
}
.leader-card .avatar {
  width: 64px; height: 64px; border-radius: 50%; background: var(--color-surface2);
  display: inline-flex; align-items: center; justify-content: center; color: var(--color-gold);
  font-family: var(--font-display); font-weight: 600; font-size: 1.5rem; border: 1px solid var(--color-gold-dk);
}
.leader-card h3 { font-size: var(--text-lg); }
.leader-card .role { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-gold); }
.leader-card p { color: var(--color-muted); font-size: var(--text-sm); line-height: 1.65; }

/* ====================================== Contact gate ====================================== */
.contact { background: linear-gradient(180deg, var(--color-bg) 0%, #08090C 100%); }
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-8), 5vw, var(--space-16)); align-items: start; }
@media (max-width: 880px) { .contact-wrap { grid-template-columns: 1fr; } }
.contact h2 { font-size: var(--text-2xl); margin-bottom: var(--space-6); }
.contact .intro { color: var(--color-muted); font-size: var(--text-base); margin-bottom: var(--space-4); }
.contact .gated {
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: var(--space-6); margin-top: var(--space-8);
}
.contact .gated .tag { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-gold); margin-bottom: 0.5rem; display: block; }
.contact .gated ul li {
  padding: 0.5rem 0; color: var(--color-text); font-size: var(--text-sm); border-bottom: 1px dashed var(--color-border);
  display: flex; gap: 0.6rem; align-items: center;
}
.contact .gated ul li:last-child { border-bottom: 0; }
.contact .gated ul li::before { content: "🔒"; font-size: 0.85rem; opacity: 0.7; }

form.contact-form {
  background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 4vw, var(--space-8)); display: flex; flex-direction: column; gap: var(--space-4);
}
form.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
@media (max-width: 580px) { form.contact-form .row { grid-template-columns: 1fr; } }
form.contact-form label {
  display: flex; flex-direction: column; gap: 0.35rem;
  font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-muted);
}
form.contact-form input, form.contact-form select, form.contact-form textarea {
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem; color: var(--color-text); font-size: var(--text-base); font-family: var(--font-body);
  transition: border-color 0.2s;
}
form.contact-form input:focus, form.contact-form select:focus, form.contact-form textarea:focus {
  border-color: var(--color-gold); outline: 0;
}
form.contact-form textarea { resize: vertical; min-height: 120px; }
form.contact-form button {
  background: var(--color-gold); color: var(--color-bg); padding: 0.95rem 1.4rem;
  border-radius: var(--radius-sm); font-size: var(--text-sm); font-weight: 500; letter-spacing: 0.04em;
  transition: background 0.2s, transform 0.2s;
}
form.contact-form button:hover { background: var(--color-gold-soft); transform: translateY(-1px); }
.form-note { font-size: var(--text-xs); color: var(--color-muted); margin-top: 0.3rem; }

.success-state {
  background: var(--color-surface); border: 1px solid var(--color-gold-dk); border-radius: var(--radius-lg);
  padding: var(--space-8); display: none; gap: var(--space-3); flex-direction: column; align-items: flex-start;
}
.success-state.active { display: flex; }
.success-state h3 { color: var(--color-gold); font-size: var(--text-lg); }
.success-state p { color: var(--color-muted); font-size: var(--text-sm); }

/* ====================================== Footer ====================================== */
.footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-12);
  color: var(--color-muted);
}
.footer .container {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-8); align-items: start;
}
@media (max-width: 720px) { .footer .container { grid-template-columns: 1fr; gap: var(--space-6); } }
.footer .brand-name { font-size: 0.85rem; }
.footer h4 { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.14em; color: var(--color-text); margin-bottom: var(--space-3); font-family: var(--font-display); }
.footer ul li { padding: 0.2rem 0; font-size: var(--text-sm); }
.footer .legal { margin-top: var(--space-8); padding-top: var(--space-6); border-top: 1px solid var(--color-border); font-size: var(--text-xs); color: var(--color-faint); }
.footer p { font-size: var(--text-sm); margin-top: var(--space-4); max-width: 50ch; }

/* ====================================== Reveal animations ====================================== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }