/* ========================================
   TradeForge Digital — Styles
   Navy + White + Orange accent
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: #0a1628;
  --navy-light: #12233d;
  --navy-mid: #1a3158;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --accent: #f97316;
  --accent-hover: #ea580c;
  --accent-light: rgba(249, 115, 22, 0.1);
  --accent-glow: rgba(249, 115, 22, 0.3);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 20px 40px -12px rgba(0,0,0,0.25);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  font-family: var(--font);
  color: var(--gray-600);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn--accent {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
  box-shadow: 0 4px 14px var(--accent-glow);
}
.btn--accent:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px var(--accent-glow);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
}

.btn--full { width: 100%; }
.btn--lg { padding: 16px 32px; font-size: 1.05rem; }
.btn--sm { padding: 10px 20px; font-size: 0.875rem; }

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition);
}
.nav--scrolled {
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
}
.nav__logo-icon { font-size: 1.4rem; }
.nav__logo-accent { color: var(--accent); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav__links a {
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--white); }

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__toggle span {
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: all var(--transition);
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}
.hero__bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.92) 0%, rgba(10,22,40,0.8) 50%, rgba(10,22,40,0.7) 100%);
}

.hero__content {
  position: relative;
  max-width: 800px;
}

.hero__badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--accent-light);
  border: 1px solid rgba(249, 115, 22, 0.2);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 24px;
}

.hero__title {
  font-size: clamp(2.25rem, 5vw, 3.75rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 640px;
}
.hero__subtitle strong { color: var(--white); }

.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero__proof {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 20px 28px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  width: fit-content;
}
.hero__proof-item { text-align: center; }
.hero__proof-number {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
}
.hero__proof-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}
.hero__proof-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
}

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}
.hero__scroll a { color: rgba(255,255,255,0.5); }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* --- Section Headers --- */
.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 800;
  color: var(--navy);
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray-500);
  max-width: 600px;
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

/* --- Value Props --- */
.value {
  padding: 80px 0;
  background: var(--gray-50);
}
.value__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value__card {
  background: var(--white);
  padding: 32px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
  text-align: center;
}
.value__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.value__icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.value__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.value__text {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* --- Pricing --- */
.services {
  padding: 100px 0;
  background: var(--white);
}
.pricing__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.pricing__card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
  position: relative;
}
.pricing__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.pricing__card--featured {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), var(--shadow-lg);
  transform: scale(1.04);
}
.pricing__card--featured:hover {
  transform: scale(1.04) translateY(-4px);
}

.pricing__popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: var(--white);
  padding: 6px 20px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing__header {
  text-align: center;
  padding-bottom: 24px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--gray-200);
}
.pricing__tier {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.pricing__price {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 2px;
  margin: 8px 0 4px;
}
.pricing__dollar {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--navy);
  margin-top: 8px;
}
.pricing__amount {
  font-size: 3rem;
  font-weight: 900;
  color: var(--navy);
  line-height: 1;
}
.pricing__period {
  font-size: 0.85rem;
  color: var(--gray-400);
}
.pricing__speed {
  display: inline-block;
  margin-top: 8px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
}

.pricing__features {
  margin-bottom: 24px;
}
.pricing__features li {
  padding: 8px 0;
  font-size: 0.9rem;
  color: var(--gray-600);
  position: relative;
  padding-left: 24px;
}
.pricing__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.pricing__card .btn--outline {
  color: var(--navy);
  border-color: var(--gray-300);
}
.pricing__card .btn--outline:hover {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}

.pricing__note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--gray-400);
  text-align: center;
}

.pricing__guarantee {
  text-align: center;
  margin-top: 48px;
  font-size: 1rem;
  color: var(--gray-600);
  padding: 20px;
  background: var(--gray-50);
  border-radius: var(--radius);
}

/* --- Portfolio --- */
.portfolio {
  padding: 100px 0;
  background: var(--gray-50);
}
.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.portfolio__card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.portfolio__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.portfolio__img-wrap {
  position: relative;
  height: 240px;
  overflow: hidden;
}
.portfolio__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.portfolio__card:hover .portfolio__img-wrap img {
  transform: scale(1.05);
}
.portfolio__overlay {
  position: absolute;
  top: 16px;
  left: 16px;
}
.portfolio__category {
  background: var(--accent);
  color: var(--white);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.portfolio__info {
  padding: 24px;
}
.portfolio__info h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 8px;
}
.portfolio__info p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.6;
  margin-bottom: 16px;
}
.portfolio__info strong { color: var(--accent); }
.portfolio__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.portfolio__tags span {
  padding: 4px 12px;
  background: var(--gray-100);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--gray-500);
}

/* --- ROI --- */
.roi {
  padding: 100px 0;
  background: var(--navy);
}
.roi__inner {
  text-align: center;
  max-width: 750px;
  margin: 0 auto;
}
.roi__title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.roi__text {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 40px;
}
.roi__math {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.roi__math-item {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 20px 28px;
  border-radius: var(--radius);
  min-width: 140px;
}
.roi__math-label {
  display: block;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.roi__math-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
}
.roi__math-symbol {
  font-size: 1.25rem;
  color: rgba(255,255,255,0.3);
}

/* --- Testimonials --- */
.testimonials {
  padding: 100px 0;
  background: var(--white);
}
.testimonials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.testimonial__card {
  background: var(--gray-50);
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}
.testimonial__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.testimonial__stars {
  color: var(--accent);
  font-size: 1.1rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.testimonial__quote {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: normal;
}
.testimonial__author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  flex-shrink: 0;
}
.testimonial__name {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--navy);
}
.testimonial__role {
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* --- About --- */
.about {
  padding: 100px 0;
  background: var(--gray-50);
}
.about__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about__content p {
  font-size: 1rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}
.about__content strong { color: var(--navy); }
.about__stats {
  display: flex;
  gap: 32px;
  margin-top: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--gray-200);
}
.about__stat { text-align: center; }
.about__stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 900;
  color: var(--accent);
}
.about__stat-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.about__image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 400px;
}

/* --- Contact --- */
.contact {
  padding: 100px 0;
  background: var(--navy);
}
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}
.contact .section-tag { color: var(--accent); }
.contact .section-title { color: var(--white); }
.contact__content p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.7);
  line-height: 1.7;
  margin-bottom: 28px;
}
.contact__perks { display: flex; flex-direction: column; gap: 12px; }
.contact__perk {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.8);
  font-weight: 500;
}

.contact__form {
  background: var(--white);
  padding: 36px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}
.form__group {
  margin-bottom: 20px;
}
.form__group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--navy);
  margin-bottom: 6px;
}
.form__group input,
.form__group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.95rem;
  color: var(--navy);
  background: var(--gray-50);
  transition: all var(--transition);
  appearance: none;
  -webkit-appearance: none;
}
.form__group input:focus,
.form__group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
  background: var(--white);
}
.form__group input::placeholder {
  color: var(--gray-400);
}
.form__group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.form__disclaimer {
  margin-top: 12px;
  font-size: 0.8rem;
  color: var(--gray-400);
  text-align: center;
}

/* --- Footer --- */
.footer {
  padding: 64px 0 32px;
  background: #060e1a;
}
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: 24px;
}
.footer__brand p {
  margin-top: 12px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.4);
  max-width: 320px;
  line-height: 1.6;
}
.footer__links h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}
.footer__links a {
  display: block;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.4);
  padding: 4px 0;
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--accent); }
.footer__bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.3);
  text-align: center;
}

/* --- Animations --- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Mobile Responsive --- */
@media (max-width: 1024px) {
  .value__grid { grid-template-columns: repeat(2, 1fr); }
  .pricing__grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto; }
  .pricing__card--featured { transform: none; }
  .pricing__card--featured:hover { transform: translateY(-4px); }
  .portfolio__grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .testimonials__grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .about__inner { grid-template-columns: 1fr; gap: 40px; }
  .about__image { order: -1; }
  .about__image img { min-height: 300px; }
  .contact__inner { grid-template-columns: 1fr; gap: 40px; }
  .footer__inner { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--navy);
    flex-direction: column;
    justify-content: center;
    gap: 24px;
    padding: 40px;
    transition: right var(--transition);
    box-shadow: -8px 0 30px rgba(0,0,0,0.3);
  }
  .nav__links.active { right: 0; }
  .nav__toggle { display: flex; }
  .nav__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
  .nav__toggle.active span:nth-child(2) { opacity: 0; }
  .nav__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

  .value__grid { grid-template-columns: 1fr; }

  .hero { padding: 100px 0 60px; min-height: auto; }
  .hero__title { font-size: 2rem; }
  .hero__proof { flex-direction: column; gap: 16px; width: 100%; }
  .hero__proof-divider { width: 40px; height: 1px; }
  .hero__scroll { display: none; }

  .roi__math { flex-direction: column; gap: 16px; }
  .roi__math-symbol { transform: rotate(90deg); }
  .roi__math-item { width: 100%; }

  .about__stats { flex-direction: column; gap: 16px; }

  .contact__form { padding: 24px; }
}