/* ================================================
   Spinstream — Landing Page Styles
   ================================================ */

/* ---------- Custom Properties ---------- */
:root {
  --clr-bg:          #0d0d14;
  --clr-surface:     #16161f;
  --clr-surface-2:   #1e1e2a;
  --clr-border:      rgba(255, 255, 255, 0.08);
  --clr-text:        #f0f0f8;
  --clr-muted:       #8888aa;
  --clr-accent:      #7c5cfc;
  --clr-accent-2:    #e040fb;
  --clr-accent-glow: rgba(124, 92, 252, 0.35);

  --gradient-main:   linear-gradient(135deg, var(--clr-accent), var(--clr-accent-2));

  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  32px;

  --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.4);

  --font-body: "Inter", system-ui, -apple-system, sans-serif;

  --max-w: 1140px;
  --nav-h: 68px;

  --transition: 0.22s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul { list-style: none; }

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2rem);
}

.gradient-text {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-heading {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 0.75rem;
}

.section-sub {
  text-align: center;
  color: var(--clr-muted);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: opacity var(--transition), transform var(--transition), background var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.btn:hover  { opacity: 0.85; transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  background: var(--gradient-main);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--clr-muted);
}
.btn--ghost:hover { color: var(--clr-text); opacity: 1; }

.btn--outline {
  border-color: var(--clr-border);
  background: transparent;
  color: var(--clr-text);
}
.btn--outline:hover { border-color: var(--clr-accent); color: var(--clr-accent); opacity: 1; }

.btn--lg { padding: 0.85rem 2rem; font-size: 1.05rem; border-radius: var(--radius-md); }

.btn--full { width: 100%; }

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 20, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--clr-border);
  height: var(--nav-h);
}

.nav__inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  color: var(--clr-accent);
  animation: spin-slow 8s linear infinite;
}

@keyframes spin-slow {
  to { transform: rotate(360deg); }
}

.nav__links {
  display: flex;
  gap: 1.75rem;
  margin-left: auto;
}

.nav__links a {
  color: var(--clr-muted);
  font-size: 0.95rem;
  transition: color var(--transition);
}
.nav__links a:hover { color: var(--clr-text); }

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

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  margin-left: auto;
}

.nav__burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav__mobile {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem clamp(1rem, 5vw, 2rem);
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
}

.nav__mobile a { padding: 0.5rem 0; color: var(--clr-muted); }
.nav__mobile a:hover { color: var(--clr-text); }
.nav__mobile .btn { margin-top: 0.5rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(5rem, 14vw, 10rem) 0 clamp(4rem, 10vw, 8rem);
  text-align: center;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__disc {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.18;
  animation: float 12s ease-in-out infinite;
}

.hero__disc--1 {
  width: 600px; height: 600px;
  background: var(--clr-accent);
  top: -200px; left: -100px;
}
.hero__disc--2 {
  width: 500px; height: 500px;
  background: var(--clr-accent-2);
  bottom: -150px; right: -100px;
  animation-delay: -5s;
}
.hero__disc--3 {
  width: 350px; height: 350px;
  background: var(--clr-accent);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -9s;
}

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.05); }
}

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

.hero__eyebrow {
  display: inline-block;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  padding: 0.3rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--clr-accent);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero__heading {
  font-size: clamp(2.5rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__sub {
  max-width: 580px;
  margin-inline: auto;
  color: var(--clr-muted);
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin-bottom: 2.5rem;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.hero__disclaimer {
  font-size: 0.82rem;
  color: var(--clr-muted);
}

/* ---------- Marquee Strip ---------- */
.marquee-strip {
  overflow: hidden;
  border-block: 1px solid var(--clr-border);
  background: var(--clr-surface);
  padding: 0.85rem 0;
}

.marquee-strip__track {
  display: flex;
  gap: 2rem;
  width: max-content;
  animation: marquee 28s linear infinite;
  white-space: nowrap;
}

.marquee-strip__track span {
  color: var(--clr-muted);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

@media (prefers-reduced-motion: reduce) {
  .marquee-strip__track { animation: none; }
  .hero__disc            { animation: none; }
  .nav__logo-icon        { animation: none; }
}

/* ---------- Features ---------- */
.features {
  padding: clamp(4rem, 10vw, 8rem) 0;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.feature-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 40px var(--clr-accent-glow);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  color: var(--clr-accent);
  margin-bottom: 1.25rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.feature-card p {
  color: var(--clr-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- Social Proof ---------- */
.social-proof {
  padding: clamp(4rem, 10vw, 8rem) 0;
  background: var(--clr-surface);
}

.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 4rem;
}

.testimonial {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
}

.testimonial p {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1rem;
  color: var(--clr-text);
}

.testimonial cite {
  font-size: 0.85rem;
  color: var(--clr-muted);
  font-style: normal;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(2rem, 6vw, 5rem);
}

.stat {
  text-align: center;
}

.stat__number {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 900;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__unit {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat__label {
  display: block;
  color: var(--clr-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* ---------- Plans ---------- */
.plans {
  padding: clamp(4rem, 10vw, 8rem) 0;
}

.plans__toggle {
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  padding: 0.3rem;
  width: fit-content;
  margin: 0 auto 3rem;
}

.plans__toggle-btn {
  background: none;
  border: none;
  color: var(--clr-muted);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.45rem 1.2rem;
  border-radius: 100px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.plans__toggle-btn--active {
  background: var(--gradient-main);
  color: #fff;
}

.badge {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 100px;
  padding: 0.15rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
}

.plans__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.plan-card {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.plan-card--featured {
  border-color: var(--clr-accent);
  background: var(--clr-surface-2);
  box-shadow: 0 0 0 1px var(--clr-accent), 0 8px 48px var(--clr-accent-glow);
}

.plan-card__badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-main);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.25rem 1rem;
  border-radius: 100px;
  white-space: nowrap;
}

.plan-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.plan-card__price {
  margin-bottom: 1.5rem;
}

.plan-card__amount {
  font-size: 2.5rem;
  font-weight: 900;
}

.plan-card__period {
  font-size: 0.9rem;
  color: var(--clr-muted);
}

.plan-card__features {
  margin-bottom: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.plan-card__features li {
  font-size: 0.95rem;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.plan-card__features li::before {
  content: "✓";
  color: var(--clr-accent);
  font-weight: 700;
  flex-shrink: 0;
}

.plan-card__features li.disabled {
  color: var(--clr-muted);
}

.plan-card__features li.disabled::before {
  content: "–";
  color: var(--clr-muted);
}

/* ---------- FAQ ---------- */
.faq {
  padding: clamp(4rem, 10vw, 8rem) 0;
  background: var(--clr-surface);
}

.faq__inner { max-width: 720px; }

.faq__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2.5rem;
}

.faq__item {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq__item[open] {
  border-color: var(--clr-accent);
}

.faq__question {
  padding: 1.15rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq__question::-webkit-details-marker { display: none; }

.faq__question::after {
  content: "+";
  font-size: 1.4rem;
  color: var(--clr-accent);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq__item[open] .faq__question::after {
  transform: rotate(45deg);
}

.faq__answer {
  padding: 0 1.5rem 1.25rem;
  color: var(--clr-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ---------- CTA Banner ---------- */
.cta-banner {
  padding: clamp(4rem, 10vw, 8rem) 0;
  background: radial-gradient(ellipse at center, rgba(124, 92, 252, 0.18) 0%, transparent 70%);
  text-align: center;
}

.cta-banner__heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.cta-banner__sub {
  color: var(--clr-muted);
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding-top: 3rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  justify-content: space-between;
  padding-bottom: 3rem;
}

.footer__brand {
  max-width: 220px;
}

.footer__brand p {
  color: var(--clr-muted);
  font-size: 0.9rem;
  margin-top: 0.75rem;
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.footer__col {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__col h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-muted);
  margin-bottom: 0.25rem;
}

.footer__col a {
  color: var(--clr-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer__col a:hover { color: var(--clr-text); }

.footer__bottom {
  border-top: 1px solid var(--clr-border);
  padding-block: 1.25rem;
  color: var(--clr-muted);
  font-size: 0.82rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .nav__links,
  .nav__actions { display: none; }

  .nav__burger { display: flex; }

  .nav__inner { flex-wrap: wrap; }

  .footer__inner { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero__cta { flex-direction: column; align-items: center; }
  .plans__toggle { flex-direction: column; border-radius: var(--radius-md); }
  .stats { gap: 2rem; }
}