/* ===== RizVer Global Design System ===== */

/* --- CSS Variables --- */
:root {
  --purple: #9B72CF;
  --sky: #5BC0EB;
  --pink: #E84393;
  --peach: #F8A5A5;
  --orange: #F39C12;
  --gold: #F1C40F;
  --dark: #0B0E17;
  --dark-2: #121728;
  --dark-3: #1A2035;
  --dark-card: #161B2E;
  --text: #E8ECF4;
  --text-dim: #8892A8;
  --radius: 16px;
  --radius-sm: 10px;
  --transition: .32s cubic-bezier(.4, 0, .2, 1);
  --gradient-brand: linear-gradient(135deg, var(--purple), var(--sky), var(--pink), var(--orange), var(--gold));
  --gradient-accent: linear-gradient(135deg, var(--purple), var(--pink));
  --gradient-warm: linear-gradient(135deg, var(--pink), var(--orange), var(--gold));
  --max-w: 1200px;
  --font: 'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--dark);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5 {
  line-height: 1.2;
  font-weight: 700;
  color: #fff;
}

h1 {
  font-size: clamp(2.2rem, 5vw, 3.6rem);
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

p {
  color: var(--text-dim);
}

/* --- Layout --- */
.container {
  width: 90%;
  max-width: var(--max-w);
  margin: 0 auto;
}

section {
  padding: 100px 0;
  position: relative;
}

/* --- Gradient Text --- */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* --- Section Header --- */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .label {
  display: inline-block;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: 6px 18px;
  border-radius: 50px;
  background: rgba(91, 192, 235, .1);
  color: var(--sky);
  margin-bottom: 16px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.section-header p {
  max-width: 560px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: .95rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 24px rgba(155, 114, 207, .3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(155, 114, 207, .45);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, .15);
  color: #fff;
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  border-color: var(--sky);
  color: var(--sky);
  transform: translateY(-2px);
}

.btn svg,
.btn i {
  width: 18px;
  height: 18px;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(11, 14, 23, .92);
  backdrop-filter: blur(20px);
  padding: 12px 0;
  box-shadow: 0 2px 30px rgba(0, 0, 0, .3);
}

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

.nav-logo img {
  height: 38px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  margin-left: 8px;
}

.nav-cta .btn {
  padding: 10px 24px;
  font-size: .85rem;
}

/* Mobile Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  height: 2.5px;
  border-radius: 4px;
  background: #fff;
  transition: var(--transition);
}

.menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

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

  .nav-links,
  .nav-cta {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    height: 100vh;
    flex-direction: column;
    background: var(--dark-2);
    padding: 100px 40px 40px;
    gap: 24px;
    transition: var(--transition);
    box-shadow: -10px 0 40px rgba(0, 0, 0, .5);
  }

  .nav-links.open,
  .nav-cta.open {
    right: 0;
  }

  .nav-cta {
    top: auto;
    bottom: 0;
    height: auto;
    padding: 24px 40px;
  }

  .nav-cta.open {
    right: 0;
  }

  .mobile-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
  }

  .mobile-overlay.open {
    opacity: 1;
    pointer-events: all;
  }
}

/* --- Cards --- */
.card {
  background: var(--dark-card);
  border: 1px solid rgba(255, 255, 255, .06);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-brand);
  opacity: 0;
  transition: var(--transition);
  z-index: 0;
}

.card:hover {
  transform: translateY(-6px);
  border-color: rgba(155, 114, 207, .25);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .3);
}

.card:hover::before {
  opacity: .05;
}

.card>* {
  position: relative;
  z-index: 1;
}

/* --- Scroll Animations --- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(.9);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1), transform .7s cubic-bezier(.4, 0, .2, 1);
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger>* {
  transition-delay: calc(var(--i, 0) * 100ms);
}

/* --- Footer --- */
.site-footer {
  background: var(--dark-2);
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand img {
  height: 36px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: .9rem;
  max-width: 280px;
}

.footer-col h4 {
  font-size: .85rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-dim);
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: .9rem;
  color: var(--text-dim);
  padding: 4px 0;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--sky);
  transform: translateX(4px);
}

.footer-socials {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.footer-socials a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .06);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  padding: 0;
}

.footer-socials a:hover {
  background: var(--gradient-brand);
  transform: translateY(-3px);
}

.footer-socials svg {
  width: 18px;
  height: 18px;
  fill: var(--text-dim);
}

.footer-socials a:hover svg {
  fill: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .06);
  padding: 24px 0;
  text-align: center;
  font-size: .85rem;
  color: var(--text-dim);
}

.footer-bottom a {
  color: var(--sky);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  section {
    padding: 64px 0;
  }
}

/* --- Floating Orbs Background --- */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .15;
  pointer-events: none;
  z-index: 0;
}

/* --- Preloader --- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--dark);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity .5s ease;
}

.preloader.done {
  opacity: 0;
  pointer-events: none;
}

.preloader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, .1);
  border-top-color: var(--sky);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

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

/* --- Skip link for accessibility --- */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  padding: 12px 24px;
  background: var(--sky);
  color: var(--dark);
  border-radius: 8px;
  font-weight: 600;
  z-index: 10000;
}

.skip-link:focus {
  top: 16px;
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 999;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(155, 114, 207, .3);
}

.back-to-top.show {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(155, 114, 207, .5);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

/* --- Utility --- */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0 !important;
}

.mt-2 {
  margin-top: 16px;
}

.mt-4 {
  margin-top: 32px;
}

.gap-16 {
  gap: 16px;
}

.flex {
  display: flex;
}

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

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

@media (max-width: 768px) {

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* --- Page Header (for inner pages) --- */
.page-header {
  padding: 140px 0 80px;
  text-align: center;
  background: var(--dark-2);
  position: relative;
  overflow: hidden;
}

.page-header .orb {
  opacity: .1;
}

.page-header h1 {
  margin-bottom: 16px;
}

.page-header p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
  font-size: .85rem;
  color: var(--text-dim);
}

.breadcrumb a {
  color: var(--sky);
}

.breadcrumb span {
  color: var(--text-dim);
}

/* --- Mobile Fixes --- */
@media (max-width: 900px) {

  html,
  body {
    overflow-x: hidden;
    width: 100%;
  }
}

@media (max-width: 768px) {

  .reveal-left,
  .reveal-right {
    transform: translateY(40px);
  }

  .reveal-left.visible,
  .reveal-right.visible {
    transform: translateY(0);
  }
}

/* --- Text Bright --- */
.text-bright {
  color: var(--text);
}