/* ForgeFlow AI Consulting — Styles */

:root {
  --color-bg: #0f1419;
  --color-bg-elevated: #1a2332;
  --color-bg-card: #1e2a3a;
  --color-surface: #243044;
  --color-text: #e8ecf1;
  --color-text-muted: #94a3b8;
  --color-accent: #f59e0b;
  --color-accent-hover: #fbbf24;
  --color-accent-glow: rgba(245, 158, 11, 0.15);
  --color-ember: #ea580c;
  --color-teal: #14b8a6;
  --color-teal-muted: rgba(20, 184, 166, 0.12);
  --color-border: rgba(148, 163, 184, 0.12);
  --color-error: #f87171;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --transition: 0.25s ease;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img, svg {
  display: block;
  max-width: 100%;
}

a {
  color: var(--color-teal);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 1000;
  padding: 0.75rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}

.skip-link:focus {
  top: 1rem;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(15, 20, 25, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.125rem;
}

.nav-logo:hover {
  color: var(--color-accent);
}

.logo-icon {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-menu a {
  display: block;
  padding: 0.5rem 0.875rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}

.nav-menu a:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.nav-cta {
  background: var(--color-accent) !important;
  color: var(--color-bg) !important;
  font-weight: 600 !important;
}

.nav-cta:hover {
  background: var(--color-accent-hover) !important;
  color: var(--color-bg) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: var(--transition);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: var(--color-bg);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--color-accent-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-teal);
  color: var(--color-teal);
  background: var(--color-teal-muted);
}

/* Hero */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.flow-lines {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 60%;
  color: var(--color-teal);
  opacity: 0.08;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin: 0 0 1rem;
}

.text-accent {
  color: var(--color-accent);
}

.hero-tagline {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: 0 0 0.75rem;
}

.hero-subhead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero-sparks {
  position: absolute;
  top: 20%;
  right: 10%;
  pointer-events: none;
}

.spark {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--color-accent);
  border-radius: 50%;
  opacity: 0;
  animation: spark 3s ease-in-out infinite;
}

.spark:nth-child(1) { top: 0; left: 0; animation-delay: 0s; }
.spark:nth-child(2) { top: 40px; left: 30px; animation-delay: 1s; }
.spark:nth-child(3) { top: -20px; left: 60px; animation-delay: 2s; }

@keyframes spark {
  0%, 100% { opacity: 0; transform: scale(0); }
  50% { opacity: 1; transform: scale(1); }
}

/* Sections */
.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
}

.section-subhead {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  margin: 0;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.pain-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.pain-card:hover {
  border-color: rgba(245, 158, 11, 0.3);
  transform: translateY(-2px);
}

.pain-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-glow);
  color: var(--color-accent);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
}

.pain-card h3 {
  font-size: 1.125rem;
  margin: 0 0 0.5rem;
}

.pain-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 0;
}

/* How It Works */
.how-it-works {
  background: var(--color-bg-elevated);
}

.steps-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 720px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.step:last-child {
  border-bottom: none;
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), var(--color-ember));
  color: var(--color-bg);
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: 50%;
}

.step-content h3 {
  font-size: 1.25rem;
  margin: 0 0 0.375rem;
  color: var(--color-accent);
}

.step-content p {
  color: var(--color-text-muted);
  margin: 0;
}

/* Services */
.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: relative;
  transition: border-color var(--transition), transform var(--transition);
}

.service-card:hover {
  border-color: rgba(20, 184, 166, 0.3);
  transform: translateY(-2px);
}

.service-card-featured {
  border-color: var(--color-accent);
  background: linear-gradient(180deg, rgba(245, 158, 11, 0.06) 0%, var(--color-bg-card) 40%);
}

.featured-badge {
  position: absolute;
  top: -10px;
  right: 1rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.service-card h3 {
  font-size: 1.125rem;
  margin: 0 0 0.5rem;
}

.service-price {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-teal);
  margin: 0 0 0.75rem;
}

.price-period {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.service-card > p:not(.service-price) {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 0 0 1rem;
}

.service-features {
  list-style: none;
  margin: 0;
  padding: 0;
}

.service-features li {
  padding: 0.375rem 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  padding-left: 1.25rem;
  position: relative;
}

.service-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-teal);
  border-radius: 50%;
}

/* Results */
.results {
  background: var(--color-bg-elevated);
}

.result-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.result-card:hover {
  border-color: rgba(20, 184, 166, 0.3);
  transform: translateY(-2px);
}

.result-industry {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-teal);
  margin-bottom: 0.5rem;
}

.result-card h3 {
  font-size: 1.125rem;
  margin: 0 0 1rem;
}

.result-metrics {
  margin-bottom: 1rem;
}

.metric {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.metric-before {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-muted);
}

.metric-arrow {
  color: var(--color-accent);
  font-size: 1.25rem;
}

.metric-after {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-accent);
}

.metric-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0.25rem 0 0;
}

.result-card > p:last-child {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin: 0;
}

/* ROI Calculator */
.roi-section {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
}

.roi-calculator {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  max-width: 800px;
  margin: 0 auto;
}

.roi-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-bottom: 2rem;
}

.roi-field label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 500;
  margin-bottom: 0.75rem;
  font-size: 0.9375rem;
}

.roi-value-display {
  font-weight: 700;
  color: var(--color-accent);
  font-size: 1rem;
}

.roi-field input[type="range"] {
  width: 100%;
  height: 8px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-surface);
  border-radius: 4px;
  outline: none;
}

.roi-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid var(--color-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  transition: transform var(--transition);
}

.roi-field input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.roi-field input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  border: 3px solid var(--color-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.roi-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.roi-result-card {
  background: var(--color-surface);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  text-align: center;
}

.roi-result-highlight {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.15), rgba(234, 88, 12, 0.1));
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.roi-result-label {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.375rem;
}

.roi-result-value {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text);
  transition: color 0.15s ease;
}

.roi-result-highlight .roi-result-value {
  color: var(--color-accent);
  font-size: 2rem;
}

.roi-result-value.updated {
  animation: pulse-value 0.4s ease;
}

@keyframes pulse-value {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

.roi-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0;
}

/* Contact Form */
.contact-section {
  background: var(--color-bg-elevated);
}

.lead-form {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-field {
  margin-bottom: 1.25rem;
}

.form-row .form-field {
  margin-bottom: 0;
}

.form-row + .form-row,
.form-row + .form-field {
  margin-top: 1.25rem;
}

.form-field label {
  display: block;
  font-weight: 500;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.required {
  color: var(--color-accent);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--color-teal);
  box-shadow: 0 0 0 3px var(--color-teal-muted);
}

.form-field input.error,
.form-field select.error,
.form-field textarea.error {
  border-color: var(--color-error);
}

.field-error {
  display: block;
  font-size: 0.8125rem;
  color: var(--color-error);
  margin-top: 0.375rem;
}

.form-field select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-field textarea {
  resize: vertical;
  min-height: 100px;
}

.btn-submit {
  width: 100%;
  margin-top: 1.5rem;
  font-size: 1.0625rem;
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form-success {
  max-width: 720px;
  margin: 0 auto;
  background: var(--color-bg-card);
  border: 1px solid rgba(20, 184, 166, 0.3);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.success-icon {
  color: var(--color-teal);
  margin: 0 auto 1rem;
}

.form-success h3 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
}

.form-success p {
  color: var(--color-text-muted);
  margin: 0;
  max-width: 480px;
  margin: 0 auto;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-tagline {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin: 0.75rem 0 0;
}

.footer-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-nav li {
  margin-bottom: 0.5rem;
}

.footer-nav a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
}

.footer-nav a:hover {
  color: var(--color-accent);
}

.footer-contact p {
  margin: 0 0 0.5rem;
  font-size: 0.9375rem;
}

.footer-contact a {
  color: var(--color-text-muted);
}

.footer-contact a:hover {
  color: var(--color-teal);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Scroll animations */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeInUp 0.7s ease forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }
.fade-in:nth-child(5) { animation-delay: 0.5s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-on-scroll {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 900px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu a {
    padding: 0.875rem 1rem;
    width: 100%;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    min-height: auto;
    padding-bottom: 3rem;
  }

  .hero-sparks {
    display: none;
  }

  .roi-results {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-row .form-field {
    margin-bottom: 1.25rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-brand .nav-logo {
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .fade-in,
  .fade-on-scroll {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }

  .spark {
    animation: none;
    opacity: 0.3;
  }
}