/* ========================================
   Growtam Media — Premium Corporate Style
   Dark + Deep Green + White Palette
   ======================================== */

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

:root {
  --color-bg: #0a0a0a;
  --color-bg-elevated: #111111;
  --color-bg-card: #141414;
  --color-bg-card-hover: #1a1a1a;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-text: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-text-muted: #6b6b6b;
  --color-green: #10b981;
  --color-green-dark: #059669;
  --color-green-glow: rgba(16, 185, 129, 0.15);
  --color-green-subtle: rgba(16, 185, 129, 0.08);
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --container-max: 1200px;
  --section-padding: 120px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

/* --- Utility --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.text-gradient {
  background: linear-gradient(135deg, var(--color-green) 0%, #34d399 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.25s ease;
  padding: 12px 28px;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-green);
  color: #000;
}

.btn--primary:hover {
  background: var(--color-green-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border-hover);
}

.btn--outline:hover {
  border-color: var(--color-green);
  color: var(--color-green);
  background: var(--color-green-subtle);
}

.btn--lg {
  padding: 16px 36px;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
  background: transparent;
}

.nav--scrolled {
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 0;
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
}

.nav__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-green);
  color: #000;
  font-weight: 800;
  font-size: 1.1rem;
}

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

.nav__links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav__links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.nav__links a:hover {
  color: var(--color-text);
}

.nav__cta {
  padding: 10px 24px;
  font-size: 0.85rem;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* --- Hero --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  overflow: hidden;
}

.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, black 20%, transparent 70%);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: 24px;
  padding: 8px 16px;
  border: 1px solid var(--color-green-glow);
  border-radius: 100px;
  background: var(--color-green-subtle);
}

.hero__title {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}

.hero__subtitle {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin-bottom: 40px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- System Diagram (Hero Visual) --- */
.system-diagram {
  position: relative;
  width: 100%;
  max-width: 400px;
  aspect-ratio: 1;
  margin: 0 auto;
}

.system-diagram__lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.system-diagram__node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  z-index: 2;
}

.system-diagram__node:hover {
  border-color: var(--color-green);
  background: var(--color-bg-card-hover);
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.1);
}

.system-diagram__node--center {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 24px 28px;
  border-color: var(--color-green);
  background: var(--color-bg-elevated);
  color: var(--color-green);
  font-size: 0.85rem;
  box-shadow: 0 0 60px rgba(16, 185, 129, 0.1);
}

.system-diagram__node--center:hover {
  transform: translate(-50%, -52%);
}

.system-diagram__icon {
  color: var(--color-green);
}

.system-diagram__node--tl {
  top: 10%;
  left: 10%;
}

.system-diagram__node--tr {
  top: 10%;
  right: 10%;
}

.system-diagram__node--bl {
  bottom: 10%;
  left: 10%;
}

.system-diagram__node--br {
  bottom: 10%;
  right: 10%;
}

.system-diagram__node svg {
  color: var(--color-green);
}

/* --- About --- */
.about {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-border);
}

.about__inner {
  max-width: 800px;
}

.about__label,
.services__label,
.framework__label,
.results__label,
.faq__label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-green);
  margin-bottom: 16px;
}

.about .section-title {
  margin-bottom: 24px;
}

.about__text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 48px;
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about__stat {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color 0.3s;
}

.about__stat:hover {
  border-color: var(--color-border-hover);
}

.about__stat-icon {
  flex-shrink: 0;
  color: var(--color-green);
}

.about__stat-label {
  font-size: 0.9rem;
  font-weight: 600;
}

/* --- Services --- */
.services {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-border);
}

.services__header {
  margin-bottom: 60px;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.service-card {
  position: relative;
  padding: 36px 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-green), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.service-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card-hover);
  transform: translateY(-4px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card__number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

.service-card__icon {
  color: var(--color-green);
  margin-bottom: 20px;
}

.service-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service-card__text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.service-card--wide {
  grid-column: span 3;
  display: grid;
  grid-template-columns: auto auto 1fr;
  grid-template-rows: auto auto;
  gap: 0 20px;
  align-items: start;
}

.service-card--wide .service-card__number {
  grid-column: 1;
  grid-row: 1;
}

.service-card--wide .service-card__icon {
  grid-column: 1;
  grid-row: 2;
  margin-bottom: 0;
}

.service-card--wide .service-card__title {
  grid-column: 2 / -1;
  grid-row: 1;
  align-self: end;
}

.service-card--wide .service-card__text {
  grid-column: 2 / -1;
  grid-row: 2;
  max-width: 600px;
}

/* --- Framework --- */
.framework {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-border);
}

.framework__header {
  margin-bottom: 60px;
}

.framework__timeline {
  position: relative;
  max-width: 700px;
}

.framework__line {
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-green), var(--color-green-dark), transparent);
}

.framework__step {
  position: relative;
  display: flex;
  gap: 32px;
  padding-bottom: 48px;
}

.framework__step:last-child {
  padding-bottom: 0;
}

.framework__step-marker {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-green);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-green);
  z-index: 1;
}

.framework__step-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  padding-top: 2px;
}

.framework__step-content p {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* --- Results --- */
.results {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-border);
}

.results__header {
  margin-bottom: 60px;
}

.results__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.result-card {
  padding: 36px 28px;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.result-card:hover {
  border-color: var(--color-green-glow);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(16, 185, 129, 0.08);
}

.result-card__icon {
  color: var(--color-green);
  margin-bottom: 20px;
}

.result-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.result-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* --- FAQ --- */
.faq {
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-border);
}

.faq__header {
  margin-bottom: 60px;
}

.faq__list {
  max-width: 800px;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 24px 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  transition: color 0.2s;
}

.faq__question:hover {
  color: var(--color-green);
}

.faq__chevron {
  flex-shrink: 0;
  color: var(--color-text-muted);
  transition: transform 0.3s ease;
}

.faq__item--open .faq__chevron {
  transform: rotate(180deg);
  color: var(--color-green);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq__item--open .faq__answer {
  max-height: 200px;
}

.faq__answer p {
  padding-bottom: 24px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* --- CTA --- */
.cta {
  position: relative;
  padding: var(--section-padding) 0;
  border-top: 1px solid var(--color-border);
  text-align: center;
  overflow: hidden;
}

.cta__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(16, 185, 129, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 185, 129, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 50%, black 10%, transparent 70%);
}

.cta__inner {
  position: relative;
  z-index: 1;
}

.cta__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.cta__subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

/* --- Footer --- */
.footer {
  padding: 60px 0 40px;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.footer__tagline {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-top: 12px;
  max-width: 400px;
  line-height: 1.6;
}

.footer__links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}

.footer__links a {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  transition: color 0.2s;
}

.footer__links a:hover {
  color: var(--color-green);
}

.footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.footer__bottom p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* --- Animations --- */
.animate-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in--visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-in--delay-1 { transition-delay: 0.1s; }
.animate-in--delay-2 { transition-delay: 0.2s; }
.animate-in--delay-3 { transition-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

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

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    display: none;
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .service-card--wide {
    grid-column: span 2;
  }

  .results__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
  }

  .nav__links,
  .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__links--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--color-border);
  }

  .hero {
    min-height: auto;
    padding: 140px 0 80px;
  }

  .hero__title {
    font-size: clamp(2rem, 6vw, 2.75rem);
  }

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

  .service-card--wide {
    grid-column: span 1;
    display: block;
  }

  .service-card--wide .service-card__number,
  .service-card--wide .service-card__icon,
  .service-card--wide .service-card__title,
  .service-card--wide .service-card__text {
    grid-column: auto;
    grid-row: auto;
  }

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

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

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn--lg {
    width: 100%;
    justify-content: center;
  }
}