/* Sportli landing — design system
   Structurally RTL-ready via logical properties (future he/RTL). */

:root {
  --color-background: #020308;
  --color-background-raised: #050a1c;
  --color-surface: rgba(8, 14, 28, 0.76);
  --color-surface-strong: #080e1c;
  --color-text-primary: #f8fafc;
  --color-text-secondary: #a7b0c0;
  --color-brand-green: #26eaaf;
  --color-brand-cyan: #1dd6c8;
  --color-brand-blue: #1b9fed;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-strong: rgba(255, 255, 255, 0.16);
  --color-focus: #26eaaf;
  --gradient-brand: linear-gradient(135deg, #26eaaf 0%, #1dd6c8 44%, #1b9fed 100%);
  --gradient-glow: radial-gradient(ellipse 60% 50% at 50% 40%, rgba(38, 234, 175, 0.14), transparent 70%);
  --font-sans: ui-rounded, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --header-height: 4rem;
  --max-width: 72rem;
  --max-prose: 40rem;
  --shadow-glow: 0 0 60px rgba(38, 234, 175, 0.12);
  --transition-fast: 180ms ease;
  --transition-med: 320ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(29, 214, 200, 0.08), transparent 55%),
    radial-gradient(ellipse 50% 40% at 100% 20%, rgba(27, 159, 237, 0.06), transparent 50%),
    radial-gradient(ellipse 40% 30% at 0% 60%, rgba(38, 234, 175, 0.04), transparent 45%);
  background-attachment: fixed;
  overflow-x: hidden;
}

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

a {
  color: var(--color-brand-cyan);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color var(--transition-fast);
}

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

a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 3px;
}

/* Skip link */
.skip-link {
  position: absolute;
  inset-inline-start: var(--space-4);
  inset-block-start: -100%;
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface-strong);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
}

.skip-link:focus {
  inset-block-start: var(--space-4);
}

/* Layout */
.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.section {
  padding-block: clamp(3.5rem, 8vw, 6rem);
  position: relative;
}

.section--tight {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section__label {
  display: inline-block;
  margin: 0 0 var(--space-4);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-brand-cyan);
}

.section__title {
  margin: 0 0 var(--space-4);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
  max-width: 18ch;
}

.section__lead {
  margin: 0;
  max-width: var(--max-prose);
  font-size: clamp(1rem, 2vw, 1.125rem);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Header */
.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 100;
  height: var(--header-height);
  border-block-end: 1px solid transparent;
  background: rgba(2, 3, 8, 0.55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition:
    background var(--transition-med),
    border-color var(--transition-med);
}

@supports (animation-timeline: scroll()) {
  .site-header {
    animation: header-solid linear both;
    animation-timeline: scroll();
    animation-range: 0 4rem;
  }
}

@keyframes header-solid {
  to {
    background: rgba(2, 3, 8, 0.88);
    border-block-end-color: var(--color-border);
  }
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: var(--header-height);
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text-primary);
  flex-shrink: 0;
  min-height: 44px;
}

.brand__icon {
  width: 2rem;
  height: 2rem;
  border-radius: 0.45rem;
}

.brand__name {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav {
  display: none;
  align-items: center;
  gap: clamp(0.75rem, 2vw, 1.5rem);
}

.nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding-block: var(--space-2);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-cta {
  display: none;
}

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

  .header-cta {
    display: inline-flex;
  }
}

/* Compact mobile nav: wrap under brand row without a drawer */
.mobile-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-4);
  justify-content: center;
  padding: var(--space-3) var(--space-4) var(--space-4);
  border-block-end: 1px solid var(--color-border);
  background: rgba(2, 3, 8, 0.72);
}

.mobile-nav a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding-inline: var(--space-1);
}

.mobile-nav a:hover {
  color: var(--color-text-primary);
}

@media (min-width: 768px) {
  .mobile-nav {
    display: none;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: 0.7rem 1.35rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 650;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-fast),
    border-color var(--transition-fast),
    color var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary {
  color: #021018;
  background: var(--gradient-brand);
  box-shadow: 0 8px 28px rgba(29, 214, 200, 0.22);
}

.btn--primary:hover {
  color: #021018;
  box-shadow: 0 10px 32px rgba(38, 234, 175, 0.3);
}

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

.btn--secondary:hover {
  color: var(--color-text-primary);
  border-color: rgba(38, 234, 175, 0.45);
  background: rgba(8, 14, 28, 0.5);
}

.btn--sm {
  min-height: 40px;
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* Hero */
.hero {
  position: relative;
  padding-block: clamp(2.5rem, 6vw, 4.5rem) clamp(3rem, 7vw, 5rem);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    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: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 70% 40%, black 20%, transparent 70%);
  pointer-events: none;
  opacity: 0.55;
  animation: court-drift 28s linear infinite;
}

@keyframes court-drift {
  from {
    background-position: 0 0, 0 0;
  }
  to {
    background-position: 48px 48px, 48px 48px;
  }
}

.hero__grid {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }
}

.hero__eyebrow {
  margin: 0 0 var(--space-4);
  font-size: 0.75rem;
  font-weight: 650;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-brand-green);
}

.hero__title {
  margin: 0 0 var(--space-5);
  font-size: clamp(2.15rem, 5.5vw, 3.5rem);
  font-weight: 750;
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 18ch;
}

.hero__title span {
  display: block;
}

.hero__copy {
  margin: 0 0 var(--space-8);
  max-width: 34rem;
  font-size: clamp(1.05rem, 2.2vw, 1.2rem);
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.hero__visual {
  position: relative;
  justify-self: center;
  width: min(100%, 22rem);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: var(--radius-xl);
  background:
    var(--gradient-glow),
    linear-gradient(160deg, #0a1228 0%, #050a1c 55%, #020308 100%);
  border: 1px solid var(--color-border);
  box-shadow:
    var(--shadow-glow),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  overflow: hidden;
  animation: hero-reveal 0.9s ease both;
}

.hero__visual::before {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(38, 234, 175, 0.12);
  border-radius: 0.5rem;
  pointer-events: none;
}

.hero__visual::after {
  content: "";
  position: absolute;
  inset-inline: 18%;
  inset-block-start: 50%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(29, 214, 200, 0.35), transparent);
  pointer-events: none;
}

.hero__icon {
  width: 58%;
  height: auto;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 12px 40px rgba(29, 214, 200, 0.25));
}

@keyframes hero-reveal {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Brand banner panel */
.brand-panel {
  padding-block: clamp(2rem, 5vw, 3.5rem);
}

.brand-panel__frame {
  position: relative;
  margin-inline: auto;
  width: min(100%, 56rem);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: #010415;
  box-shadow:
    0 24px 60px rgba(0, 0, 0, 0.45),
    0 0 0 1px rgba(38, 234, 175, 0.04);
  overflow: hidden;
}

.brand-panel__frame picture,
.brand-panel__frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 2024 / 777;
  object-fit: contain;
  object-position: center;
  background: #010415;
}

/* Product positioning */
.positioning {
  border-block: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(5, 10, 28, 0.65), rgba(2, 3, 8, 0.2));
}

.positioning .section__title {
  max-width: 22ch;
}

/* Value props */
.values__grid {
  display: grid;
  gap: var(--space-8);
  margin-block-start: var(--space-12);
}

@media (min-width: 768px) {
  .values__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-10);
  }
}

.value {
  position: relative;
  padding-block-start: var(--space-2);
}

.value__marker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-block-end: var(--space-4);
  border-radius: 999px;
  border: 1px solid rgba(38, 234, 175, 0.35);
  background: rgba(8, 14, 28, 0.8);
  color: var(--color-brand-green);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.value__icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  margin-block-end: var(--space-4);
  color: var(--color-brand-cyan);
}

.value h3 {
  margin: 0 0 var(--space-3);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.value p {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.65;
  max-width: 28ch;
}

@media (min-width: 768px) {
  .value p {
    max-width: none;
  }
}

/* Lifecycle */
.lifecycle {
  background: var(--color-background-raised);
  border-block: 1px solid var(--color-border);
}

.lifecycle__list {
  list-style: none;
  margin: var(--space-12) 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

@media (min-width: 900px) {
  .lifecycle__list {
    flex-direction: row;
    align-items: stretch;
    justify-content: space-between;
    gap: 0;
  }
}

.lifecycle__step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5) 0;
  flex: 1;
  min-width: 0;
}

@media (max-width: 899px) {
  .lifecycle__step {
    padding-inline-start: var(--space-8);
    border-inline-start: 1px solid rgba(38, 234, 175, 0.25);
    margin-inline-start: 0.7rem;
  }

  .lifecycle__step::before {
    content: "";
    position: absolute;
    inset-inline-start: -0.4rem;
    inset-block-start: 1.55rem;
    width: 0.7rem;
    height: 0.7rem;
    border-radius: 999px;
    background: var(--gradient-brand);
    box-shadow: 0 0 12px rgba(38, 234, 175, 0.4);
  }
}

@media (min-width: 900px) {
  .lifecycle__step {
    padding: var(--space-4) var(--space-3);
    text-align: center;
    align-items: center;
  }

  .lifecycle__step:not(:last-child)::after {
    content: "";
    position: absolute;
    inset-inline-end: -0.15rem;
    inset-block-start: 1.85rem;
    width: 0.55rem;
    height: 0.55rem;
    border-block-end: 2px solid var(--color-brand-cyan);
    border-inline-end: 2px solid var(--color-brand-cyan);
    transform: rotate(-45deg);
    opacity: 0.7;
  }

  .lifecycle__step:not(:last-child)::before {
    content: "";
    position: absolute;
    inset-inline-end: 0;
    inset-block-start: 2rem;
    width: calc(50% + 0.5rem);
    height: 1px;
    background: linear-gradient(90deg, rgba(38, 234, 175, 0.15), rgba(27, 159, 237, 0.55));
    transform: translateX(50%);
  }
}

.lifecycle__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  color: #021018;
  background: var(--gradient-brand);
}

.lifecycle__label {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}

.lifecycle .section__lead {
  margin-block-start: var(--space-8);
}

/* Trust */
.trust__principles {
  list-style: none;
  margin: var(--space-10) 0 0;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 768px) {
  .trust__principles {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
  }
}

.trust__principles li {
  padding: var(--space-5) var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.trust__principles li::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  flex-shrink: 0;
  border-radius: 999px;
  background: var(--gradient-brand);
}

/* Beta CTA */
.beta {
  text-align: center;
}

.beta .section__title {
  max-width: 22ch;
  margin-inline: auto;
}

.beta .section__lead {
  margin-inline: auto;
}

.beta .btn-group {
  justify-content: center;
  margin-block-start: var(--space-8);
}

.beta__tagline {
  margin: var(--space-6) 0 0;
  font-size: 0.8125rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Footer */
.site-footer {
  border-block-start: 1px solid var(--color-border);
  background: #01040f;
  padding-block: var(--space-12) var(--space-8);
}

.site-footer__grid {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.site-footer__brand .brand {
  align-self: flex-start;
}

.site-footer__desc {
  margin: 0;
  max-width: 32rem;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.site-footer__meta {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  font-size: 0.9375rem;
}

.site-footer__meta a {
  color: var(--color-text-secondary);
  text-decoration: none;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  width: fit-content;
}

.site-footer__meta a:hover {
  color: var(--color-brand-green);
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-5);
}

.site-footer__bottom {
  margin-block-start: var(--space-10);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-6);
  justify-content: space-between;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

.site-footer__bottom a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.site-footer__bottom a:hover {
  color: var(--color-brand-cyan);
}

/* Legal pages */
.page-header {
  padding-block: clamp(2.5rem, 6vw, 4rem) var(--space-8);
  border-block-end: 1px solid var(--color-border);
  background: linear-gradient(180deg, rgba(5, 10, 28, 0.8), transparent);
}

.page-header h1 {
  margin: 0 0 var(--space-3);
  font-size: clamp(2rem, 4.5vw, 2.75rem);
  font-weight: 750;
  letter-spacing: -0.025em;
}

.page-header__subtitle {
  margin: 0 0 var(--space-4);
  font-size: 0.8125rem;
  font-weight: 650;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-brand-cyan);
}

.page-header__updated {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
}

.legal {
  padding-block: var(--space-12) var(--space-20);
}

.legal__content {
  max-width: 42rem;
}

.legal__content h2 {
  margin: var(--space-10) 0 var(--space-4);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.015em;
}

.legal__content h2:first-child {
  margin-block-start: 0;
}

.legal__content p,
.legal__content li {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.7;
}

.legal__content ul {
  padding-inline-start: 1.25rem;
  margin: 0 0 var(--space-4);
}

.legal__content li + li {
  margin-block-start: var(--space-2);
}

.legal__content p {
  margin: 0 0 var(--space-4);
}

/* 404 */
.error-page {
  min-height: calc(100vh - var(--header-height));
  display: grid;
  place-items: center;
  padding: var(--space-16) var(--space-4);
  text-align: center;
}

.error-page__code {
  margin: 0 0 var(--space-4);
  font-size: clamp(3.5rem, 12vw, 6rem);
  font-weight: 750;
  letter-spacing: -0.04em;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1;
}

.error-page h1 {
  margin: 0 0 var(--space-4);
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.error-page p {
  margin: 0 0 var(--space-8);
  color: var(--color-text-secondary);
  max-width: 28rem;
}

.error-page .btn-group {
  justify-content: center;
}

/* Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Reveal on load for sections (subtle) */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    animation: section-fade 0.7s ease both;
  }
}

@keyframes section-fade {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}