/* =====================================================
   Forge Intelligence — Custom Styles
   Extends Tailwind via CDN. Dark-first, ember-accented.
   ===================================================== */

:root {
  --forge-black: #0F1115;
  --forge-bg:    #111318;
  --forge-navy:  #0B1020;
  --forge-charcoal: #17191F;
  --forge-panel: #1C1F26;
  --forge-iron:  #2A2E37;
  --forge-slate: #6B7280;
  --forge-mist:  #9CA3AF;
  --forge-fog:   #C7CBD3;
  --forge-white: #F5F7FA;
  --forge-ember: #E8720C;
  --forge-ember-hover: #FB8418;
  --forge-amber: #F5A623;
  --forge-deep-blue: #0A1530;

  --ease: cubic-bezier(.22,.61,.36,1);
}

/* Base ------------------------------------------------- */
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--forge-bg);
  color: var(--forge-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "cv02","cv03","cv04","cv11";
  line-height: 1.6;
}
::selection { background: var(--forge-ember); color: #fff; }

h1,h2,h3,h4 { letter-spacing: -0.015em; line-height: 1.15; }

/* Background layers ----------------------------------- */
.bg-forge        { background: var(--forge-bg); }
.bg-forge-panel  { background: var(--forge-panel); }
.bg-forge-deep   { background: var(--forge-deep-blue); }
.bg-forge-grad {
  background:
    radial-gradient(1200px 600px at 15% -10%, rgba(232,114,12,0.18), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(10,21,48,0.9), transparent 60%),
    linear-gradient(180deg, #0B1020 0%, #0F1115 100%);
}
.bg-mesh {
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 85%);
}
.ember-glow {
  position: absolute;
  width: 520px; height: 520px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,114,12,0.35) 0%, rgba(232,114,12,0) 65%);
  filter: blur(40px);
  pointer-events: none;
  animation: emberPulse 7s ease-in-out infinite;
}
@keyframes emberPulse {
  0%,100% { opacity: 0.55; transform: scale(1); }
  50%     { opacity: 0.85; transform: scale(1.08); }
}

/* Text accents ---------------------------------------- */
.text-ember { color: var(--forge-ember); }
.text-amber { color: var(--forge-amber); }
.text-mist  { color: var(--forge-mist); }
.text-fog   { color: var(--forge-fog); }
.gradient-text {
  background: linear-gradient(135deg, #FFFFFF 0%, #F5A623 60%, #E8720C 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Buttons --------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  font-weight: 600; font-size: 0.95rem;
  border-radius: 0.625rem;
  transition: all 180ms var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
  cursor: pointer;
}
.btn-primary {
  background: var(--forge-ember);
  color: #fff;
  box-shadow: 0 1px 0 rgba(255,255,255,0.18) inset, 0 6px 20px -8px rgba(232,114,12,0.75);
}
.btn-primary:hover {
  background: var(--forge-ember-hover);
  transform: translateY(-1px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.22) inset, 0 12px 28px -10px rgba(232,114,12,0.9);
}
.btn-secondary {
  background: rgba(255,255,255,0.04);
  color: var(--forge-white);
  border-color: rgba(255,255,255,0.12);
  backdrop-filter: blur(6px);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.22);
}
.btn-ghost {
  background: transparent;
  color: var(--forge-fog);
  border-color: rgba(255,255,255,0.1);
}
.btn-ghost:hover { color: #fff; border-color: rgba(255,255,255,0.25); }

/* Cards ----------------------------------------------- */
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 1rem;
  padding: 1.75rem;
  transition: all 250ms var(--ease);
}
.card:hover {
  border-color: rgba(232,114,12,0.35);
  transform: translateY(-2px);
  box-shadow: 0 24px 48px -24px rgba(0,0,0,0.6);
}
.card-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  display: inline-flex; align-items: center; justify-content: center;
  background: rgba(232,114,12,0.12);
  color: var(--forge-ember);
  border: 1px solid rgba(232,114,12,0.25);
  margin-bottom: 1rem;
}

/* Sticky Nav ------------------------------------------ */
.nav {
  position: sticky; top: 0; z-index: 50;
  transition: all 220ms var(--ease);
  backdrop-filter: saturate(140%) blur(10px);
  background: rgba(15,17,21,0.55);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(15,17,21,0.85);
  border-bottom-color: rgba(255,255,255,0.06);
  padding-top: 0.25rem; padding-bottom: 0.25rem;
}
.nav a.nav-link {
  color: var(--forge-fog);
  font-weight: 500; font-size: 0.925rem;
  transition: color 160ms var(--ease);
  position: relative;
}
.nav a.nav-link:hover { color: #fff; }
.nav a.nav-link.active { color: #fff; }
.nav a.nav-link.active::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 2px; background: var(--forge-ember); border-radius: 2px;
}

/* Mobile menu ----------------------------------------- */
.mobile-menu { display: none; }
.mobile-menu.open { display: block; }

/* Section helpers ------------------------------------- */
.section { padding: 6rem 0; }
@media (max-width: 768px) { .section { padding: 4rem 0; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  text-transform: uppercase; font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.14em; color: var(--forge-ember);
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: rgba(232,114,12,0.08);
  border: 1px solid rgba(232,114,12,0.25);
}

/* FAQ accordion --------------------------------------- */
.faq-item {
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.875rem;
  background: rgba(255,255,255,0.02);
  overflow: hidden;
}
.faq-item + .faq-item { margin-top: 0.75rem; }
.faq-question {
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 1.25rem 1.5rem;
  font-weight: 600; font-size: 1rem; color: #fff;
  background: transparent; border: none; text-align: left;
  cursor: pointer;
}
.faq-question .chev { transition: transform 220ms var(--ease); color: var(--forge-ember); }
.faq-item.active .chev { transform: rotate(180deg); }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height 300ms var(--ease), padding 300ms var(--ease);
  padding: 0 1.5rem;
  color: var(--forge-fog);
  line-height: 1.7;
}
.faq-item.active .faq-answer { padding: 0 1.5rem 1.25rem; max-height: 600px; }

/* Tables ---------------------------------------------- */
.compare-table {
  width: 100%; border-collapse: separate; border-spacing: 0;
  background: rgba(255,255,255,0.02);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 1rem; overflow: hidden;
  font-size: 0.925rem;
}
.compare-table th, .compare-table td {
  padding: 0.9rem 1rem; text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  vertical-align: top;
}
.compare-table thead th {
  background: rgba(255,255,255,0.04);
  font-weight: 600; color: #fff;
  font-size: 0.825rem; text-transform: uppercase; letter-spacing: 0.08em;
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table .forge-col { background: rgba(232,114,12,0.07); color: #fff; }
.compare-table .check { color: #10B981; }
.compare-table .x { color: #9CA3AF; }

/* Pricing --------------------------------------------- */
.pricing-card {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 1rem;
  padding: 2rem 1.75rem;
  transition: all 250ms var(--ease);
  display: flex; flex-direction: column;
}
.pricing-card.featured {
  border-color: rgba(232,114,12,0.6);
  background:
    linear-gradient(180deg, rgba(232,114,12,0.08), rgba(232,114,12,0.015)),
    var(--forge-panel);
  box-shadow: 0 24px 60px -24px rgba(232,114,12,0.35);
}
.pricing-card .badge {
  position: absolute; top: -12px; left: 50%; transform: translateX(-50%);
  background: var(--forge-ember); color: #fff;
  padding: 0.3rem 0.8rem; font-size: 0.75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  border-radius: 999px;
}
.pricing-card .price {
  font-size: 2.5rem; font-weight: 700; letter-spacing: -0.02em;
}
.pricing-card ul { space-y: 0.5rem; }
.pricing-card li {
  display: flex; gap: 0.6rem; align-items: flex-start;
  color: var(--forge-fog); font-size: 0.925rem;
  padding: 0.35rem 0;
}
.pricing-card li svg { color: var(--forge-ember); flex-shrink: 0; margin-top: 3px; }

/* Forms ----------------------------------------------- */
.field label {
  display: block; margin-bottom: 0.4rem;
  font-size: 0.825rem; font-weight: 600; color: var(--forge-fog);
  text-transform: uppercase; letter-spacing: 0.06em;
}
.field input, .field select, .field textarea {
  width: 100%;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 0.625rem;
  padding: 0.75rem 0.9rem;
  color: #fff; font-size: 0.95rem;
  transition: all 160ms var(--ease);
  font-family: inherit;
}
.field input::placeholder, .field textarea::placeholder { color: var(--forge-slate); }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--forge-ember);
  box-shadow: 0 0 0 3px rgba(232,114,12,0.2);
  background: rgba(255,255,255,0.05);
}
.field.error input, .field.error select, .field.error textarea {
  border-color: #EF4444;
  box-shadow: 0 0 0 3px rgba(239,68,68,0.2);
}
.field .error-msg {
  display: none; color: #EF4444; font-size: 0.8rem; margin-top: 0.35rem;
}
.field.error .error-msg { display: block; }

/* ROI Calculator -------------------------------------- */
.roi-wrap {
  background: linear-gradient(180deg, rgba(232,114,12,0.05), rgba(10,21,48,0.4));
  border: 1px solid rgba(232,114,12,0.25);
  border-radius: 1.25rem;
  padding: 2rem;
}
.roi-result {
  background: var(--forge-panel);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 0.875rem;
  padding: 1.5rem;
}
.roi-metric { font-size: 2rem; font-weight: 700; color: var(--forge-ember); letter-spacing: -0.02em; }
.roi-label { font-size: 0.825rem; color: var(--forge-mist); text-transform: uppercase; letter-spacing: 0.08em; }

/* Stats ----------------------------------------------- */
.stat-value {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700; letter-spacing: -0.02em;
  color: #fff;
}
.stat-label { color: var(--forge-mist); font-size: 0.925rem; }

/* Tabs (use cases) ------------------------------------ */
.tab-btn {
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  font-size: 0.9rem; font-weight: 500;
  color: var(--forge-fog);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  cursor: pointer; transition: all 160ms var(--ease);
}
.tab-btn:hover { color: #fff; border-color: rgba(255,255,255,0.2); }
.tab-btn.active {
  background: rgba(232,114,12,0.15);
  color: #fff;
  border-color: rgba(232,114,12,0.6);
}
.tab-panel { display: none; }
.tab-panel.active { display: block; animation: fadeIn 280ms var(--ease); }

/* How it works steps ---------------------------------- */
.step-num {
  width: 36px; height: 36px; border-radius: 999px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--forge-ember); color: #fff; font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 8px 24px -8px rgba(232,114,12,0.8);
}

/* Animations ------------------------------------------ */
.fade-in { opacity: 0; transform: translateY(16px); transition: opacity 600ms var(--ease), transform 600ms var(--ease); }
.fade-in.visible { opacity: 1; transform: translateY(0); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* Footer ---------------------------------------------- */
footer {
  background: #0A0C10;
  border-top: 1px solid rgba(255,255,255,0.06);
}
footer a { color: var(--forge-fog); transition: color 140ms var(--ease); }
footer a:hover { color: #fff; }

/* Misc ------------------------------------------------ */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.12), transparent);
}
.hero-pill {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  font-size: 0.8rem; color: var(--forge-fog);
}
.dot {
  width: 6px; height: 6px; border-radius: 999px;
  background: #10B981;
  box-shadow: 0 0 0 4px rgba(16,185,129,0.18);
}

/* Responsive helpers ---------------------------------- */
.container-xl { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}