/*==================== GOOGLE FONTS ====================*/
@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;600&display=swap");

/*==================== VARIABLES CSS ====================*/
:root {
  --header-height: 3rem;

  /*========== Colors - Light Theme Only ==========*/
  --primary-color: #fa25fa;
  --secondary-color: #b263fd;
  --first-color: #6366f1;
  --first-color-second: #6366f1;
  --first-color-alt: #4f46e5;
  --first-color-lighter: #c7d2fe;
  --title-color: #111827;
  --text-color: #6b7280;
  --text-color-light: #9ca3af;
  --input-color: #f8fafc;
  --body-color: #ffffff;
  --container-color: #ffffff;
  --surface-color: #f8fafc;
  --border-color: #e5e7eb;
  --scroll-bar-color: #e5e7eb;
  --scroll-thumb-color: #d1d5db;

  /* Additional optimized colors for enhanced contrast and accessibility */
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --muted-color: #f3f4f6;
  --subtle-border: #f1f5f9;
  --hover-surface: #f8fafc;

  /* Enhanced contrast colors for better accessibility */
  --text-high-contrast: #111827;
  --text-medium-contrast: #374151;
  --background-subtle: #fafbfc;
  --shadow-light: rgba(0, 0, 0, 0.05);
  --shadow-medium: rgba(0, 0, 0, 0.1);
  --shadow-strong: rgba(0, 0, 0, 0.15);

  /*========== Font and typography ==========*/
  --body-font: "Poppins", sans-serif;

  /* .5rem = 8px, 1rem = 16px, 1.5rem = 24px ... */
  --big-font-size: 2rem;
  --h1-font-size: 1.5rem;
  --h2-font-size: 1.25rem;
  --h3-font-size: 1.125rem;
  --normal-font-size: 0.938rem;
  --small-font-size: 0.813rem;
  --smaller-font-size: 0.75rem;

  /*========== Font weight ==========*/
  --body-font-weight: 400;
  --font-medium: 500;
  --font-semi-bold: 600;

  /*========== Margines Bottom ==========*/
  /* .25rem = 4px, .5rem = 8px, .75rem = 12px ... */
  --mb-0-25: 0.25rem;
  --mb-0-5: 0.5rem;
  --mb-0-75: 0.75rem;
  --mb-1: 1rem;
  --mb-1-5: 1.5rem;
  --mb-2: 2rem;
  --mb-2-5: 2.5rem;
  --mb-3: 3rem;

  /*========== z index ==========*/
  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;

  /*========== Animation Variables ==========*/
  /* Optimized timing functions for smooth, minimalistic animations */
  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-gentle: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);

  /* Animation durations for consistent timing */
  --duration-fast: 0.2s;
  --duration-normal: 0.3s;
  --duration-slow: 0.5s;
  --duration-slower: 0.8s;
}

/* ========== MINIMAL ANIMATIONS USED ON SITE ========== */

/* Smooth fade-in animation for page load elements */
.text-focus-in {
  animation: smooth-fade-in var(--duration-slower) var(--ease-gentle) both;
}

@keyframes smooth-fade-in {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Gentle hover animation for interactive elements */
.focus-in-expand-fwd {
  transition: all var(--duration-normal) var(--ease-gentle);
  transform-origin: center;
}

.focus-in-expand-fwd:hover {
  transform: translateY(-2px);
  color: var(--first-color-alt);
}

/* Subtle scale animation for buttons and links */
.gentle-scale {
  transition: transform var(--duration-fast) var(--ease-gentle);
}

.gentle-scale:hover {
  transform: scale(1.02);
}

/* Optimized floating animation for blob */
.float-gentle {
  animation: float-gentle 6s var(--ease-gentle) infinite;
}

@keyframes float-gentle {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes text-focus-in {
  0% {
    -webkit-filter: blur(12px);
    filter: blur(12px);
    opacity: 0;
  }
  100% {
    -webkit-filter: blur(0);
    filter: blur(0);
    opacity: 1;
  }
}

/* ========== OPTIMIZED HOVER EFFECTS ========== */

.icn-effect {
  transition: all var(--duration-normal) var(--ease-gentle);
}

.icn-effect:hover {
  color: var(--first-color-alt);
  transform: translateY(-2px);
  text-shadow: 0 2px 8px var(--shadow-light);
}

.btn-effect {
  transition: all var(--duration-normal) var(--ease-gentle);
  position: relative;
  overflow: hidden;
}

.btn-effect:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--shadow-medium);
}

/* Sheen light that sweeps across buttons */
.button .light {
  position: absolute;
  top: -60%;
  left: -120%;
  width: 45%;
  height: 220%;
  transform: rotate(25deg);
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.18) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  pointer-events: none;
  filter: blur(0.5px);
  animation: sheen-sweep 3.5s var(--ease-gentle) infinite;
}

@keyframes sheen-sweep {
  0% {
    left: -120%;
  }
  60% {
    left: 120%;
  }
  100% {
    left: 120%;
  }
}

.btn-effect::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  transition: left var(--duration-slow) var(--ease-gentle);
}

.btn-effect:hover::before {
  left: 100%;
}

/* ========== OPTIMIZED GRADIENT ANIMATIONS ========== */

.text-animate {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color),
    var(--first-color-alt)
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: smooth-gradient 8s var(--ease-gentle) infinite;
  will-change: background-position;
}

@keyframes smooth-gradient {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.gradient-background {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color),
    var(--first-color-alt)
  );
  background-size: 200% 200%;
  animation: smooth-gradient 8s var(--ease-gentle) infinite;
  transition: all var(--duration-normal) var(--ease-gentle);
  will-change: background-position, transform;
}

.gradient-background:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow-medium);
}

/*==================== BASE ====================*/
* {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0 0 var(--header-height) 0;
  font-family: var(--body-font);
  font-size: var(--normal-font-size);
  background-color: var(--body-color);
  color: var(--text-color);
}

h1,
h2,
h3,
h4 {
  color: var(--title-color);
  font-weight: var(--font-semi-bold);
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
}

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

/*==================== REUSABLE ====================*/
.section {
  padding: 2rem 0 4rem;
}

.section__title {
  font-size: var(--h1-font-size);
}

.section__subtitle {
  display: block;
  font-size: var(--small-font-size);
  margin-bottom: var(--mb-3);
}

.section__title,
.section__subtitle {
  text-align: center;
}

/*==================== LAYOUT ====================*/
.container {
  max-width: 768px;
  margin-left: var(--mb-1-5);
  margin-right: var(--mb-1-5);
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.header {
  width: 100%;
  position: fixed;
  bottom: 0;
  left: 0;
  z-index: var(--z-fixed);
  background-color: var(--body-color);
}

/*==================== NAV ====================*/
.nav {
  max-width: 968px;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__logo,
.nav__toggle {
  color: var(--title-color);
  font-weight: var(--font-medium);
}

.nav__logo:hover {
  color: var(--first-color);
}

.nav__toggle {
  font-size: 1.1rem;
  cursor: pointer;
}

.nav__toggle:hover {
  color: var(--first-color);
}

@media screen and (max-width: 767px) {
  .nav__menu {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--body-color);
    padding: 2rem 1.5rem 4rem;
    box-shadow: 0 -1px 4px var(--shadow-strong);
    border-radius: 1.5rem 1.5rem 0 0;
    transition: all var(--duration-normal) var(--ease-gentle);
    backdrop-filter: blur(10px);
  }
}

.nav__list {
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.nav__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: var(--small-font-size);
  color: var(--title-color);
  font-weight: var(--font-medium);
  transition: all var(--duration-normal) var(--ease-gentle);
  position: relative;
}

.nav__link:hover {
  color: var(--first-color);
  transform: translateY(-2px);
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--first-color);
  transition: all var(--duration-normal) var(--ease-gentle);
  transform: translateX(-50%);
}

.nav__link:hover::after,
.nav__link.active-link::after {
  width: 20px;
}

.nav__icon {
  font-size: 1.2rem;
}

/* show menu */
.show-menu {
  bottom: 0;
}

/* Active link */
.active-link {
  color: var(--first-color);
}

/* Change background header */
.scroll-header {
  box-shadow: 0 -1px 4px var(--shadow-strong);
}

/*==================== HOME ====================*/
.home__container {
  gap: 1rem;
}

.home__content {
  grid-template-columns: 0.5fr 3fr;
  padding-top: 3.5rem;
  align-items: center;
}

.home__social {
  display: grid;
  grid-template-columns: max-content;
  row-gap: 1rem;
}

.home__social-icon {
  font-size: 1.25rem;
  color: var(--first-color);
}

.home__social-icon:hover {
  color: var(--first-color-alt);
  transform: translateY(-3px) scale(1.05);
  text-shadow: 0 6px 18px var(--shadow-light);
}

.home__blob {
  width: 200px;
  fill: var(--first-color);
  transition: all var(--duration-normal) var(--ease-gentle);
}

.home__blob-img {
  width: 170px;
}

.home__data {
  grid-column: 1/3;
}

.home__title {
  font-size: var(--big-font-size);
}

.home__subtitle {
  font-size: var(--h3-font-size);
  color: var(--text-color);
  font-weight: var(--font-medium);
  margin-bottom: var(--mb-0-75);
}

.home__description {
  margin-bottom: var(--mb-2);
  line-height: 1.8;
}

/* Replace simple transform with variable-based scaling so we can compose with tilt */
.home__img:hover .home__blob {
  --scale: 1.02;
}

/*==================== COMPANY LOGOS ====================*/
.company-logo-link {
  display: inline-block;
  vertical-align: baseline;
}

.company-logo {
  display: inline-block;
  position: relative;
  vertical-align: baseline;
}

/* Base logo image: stable px sizing + reliable baseline */
.company-logo__image {
  height: 13px;
  width: auto;
  max-width: 90px;
  vertical-align: -0.12em; /* consistent baseline nudge for most logos */
  margin-top: 0; /* ensure no upward nudge */
  transition: filter var(--duration-normal) var(--ease-gentle);
  will-change: filter;
}

/* Provide animated gradient fallback text styling (hidden by default) */
.company-logo__fallback {
  display: none;
  font-weight: 600;
  white-space: nowrap;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color),
    var(--first-color-alt)
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  background-size: 200% 200%;
  animation: smooth-gradient 8s var(--ease-gentle) infinite;
}

/* Qiskit specific fine-tuning: nudge baseline up slightly across sizes */
.company-logo__image--qiskit {
  height: 16px !important;
  max-width: 105px !important;
  vertical-align: -0.18em !important; /* slight extra nudge for Qiskit */
  position: static !important; /* remove previous positioning tweaks */
  top: auto !important;
  transform: none !important;
  margin-top: 0 !important;
}

/* Progressive sizing only, baseline stays constant */
@media screen and (min-width: 481px) {
  .company-logo__image--qiskit {
    height: 17px !important;
  }
}
@media screen and (min-width: 1024px) {
  .company-logo__image--qiskit {
    height: 18px !important;
  }
}

/* Final logo alignment overrides */
.home__description .company-logo__image {
  height: 13px !important; /* base for most logos */
  max-width: 100px !important;
  margin: 0 !important;
  position: static !important;
  top: auto !important;
  transform: none !important;
  vertical-align: 0.08em !important; /* slight raise for optical alignment */
}

/* Qiskit needs a touch larger and slightly more lift */
.home__description .company-logo__image--qiskit {
  height: 16px !important; /* mobile & small */
  max-width: 110px !important;
  vertical-align: 0.12em !important; /* raise a bit more to match cap-height */
}

/* Tablet */
@media screen and (min-width: 768px) {
  .home__description .company-logo__image--qiskit {
    height: 17px !important;
  }
}

/* Desktop */
@media screen and (min-width: 1024px) {
  .home__description .company-logo__image--qiskit {
    height: 18px !important;
  }
}

/* Fallback alignment when image fails */
.home__description
  .company-logo__image[style*="display: none"]
  + .company-logo__fallback {
  display: inline !important;
  font-size: inherit !important;
  line-height: 1 !important;
  vertical-align: 0.1em !important; /* align like the image */
}

/* ===== FINAL stable alignment for company logos (end-of-file override) ===== */
/* Apply only within home__description to avoid affecting other sections */
.home__description .company-logo {
  display: inline-block !important;
  line-height: 0 !important; /* remove extra inline image line-box */
  vertical-align: -0.14em !important; /* slightly higher for optical balance */
}

/* Lift Qiskit slightly more for perfect cap-height match */
.home__description .company-logo:has(> .company-logo__image--qiskit) {
  vertical-align: -0.25em !important;
}

.home__description .company-logo__image {
  display: block !important; /* block inside inline-block wrapper */
  width: auto !important;
  margin: 0 !important;
  position: static !important;
  top: auto !important;
  transform: none !important;
}

/* Qiskit sizing only (others keep their current heights) */
.home__description .company-logo__image--qiskit {
  height: 16px !important; /* mobile default */
  max-width: 110px !important;
}

@media screen and (min-width: 481px) {
  .home__description .company-logo__image--qiskit {
    height: 17px !important;
  }
}
@media screen and (min-width: 1024px) {
  .home__description .company-logo__image--qiskit {
    height: 18px !important;
  }
}

/* Fallback text alignment when image fails */
.home__description
  .company-logo__image[style*="display: none"]
  + .company-logo__fallback {
  display: inline-block !important;
  line-height: 1 !important;
  vertical-align: -0.14em !important; /* match wrapper baseline lift */
}

/*==================== BUTTONS ====================*/
.button {
  display: inline-block;
  background-color: var(--first-color);
  color: var(--container-color);
  padding: 1rem;
  border-radius: 0.9rem;
  font-weight: var(--font-medium);
  transition: all var(--duration-normal) var(--ease-gentle);
  position: relative;
  overflow: hidden;
}

.button:hover {
  background-color: var(--first-color-alt);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--shadow-medium);
}

.button__icon {
  font-size: 1.25rem;
  margin-left: var(--mb-0-5);
  transition: all var(--duration-normal) var(--ease-gentle);
}

.button:hover .button__icon {
  transform: translateX(3px);
}

.button--flex {
  display: inline-flex;
  align-items: center;
}

/*========== SCROLL BAR ==========*/
::-webkit-scrollbar {
  width: 0.6rem;
  background-color: var(--scroll-bar-color);
  border-radius: 0.5rem;
}

::-webkit-scrollbar-thumb {
  background-color: var(--scroll-thumb-color);
  border-radius: 0.5rem;
  transition: background-color var(--duration-normal) var(--ease-gentle);
}

::-webkit-scrollbar-thumb:hover {
  background-color: var(--first-color);
}

/*========== PERFORMANCE OPTIMIZATIONS ==========*/
/* Enable hardware acceleration for animated elements */
.text-animate,
.gradient-background,
.company-logo__image,
.nav__link,
.button,
.icn-effect,
.btn-effect {
  will-change: transform;
}

/* Optimize animations for better performance */
@media (prefers-reduced-motion: reduce) {
  * *::before *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .text-animate,
  .gradient-background {
    animation: none;
  }

  .parallax > use {
    animation: none;
  }
}

/* Focus styles for accessibility */
.nav__link:focus,
.button:focus,
.company-logo-link:focus {
  outline: 2px solid var(--first-color);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Animation trigger classes */
.animate-in {
  animation-play-state: running;
}

/* Lazy loading animation states */
.slide-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--duration-slow) var(--ease-out-quart);
  transition-delay: var(--delay, 0s);
}

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

/* Subtle 3D tilt polish for the blob */
.home__img {
  perspective: 700px;
}

/* Compose rotation with scale using CSS variables set by JS */
.home__blob {
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg))
    scale(var(--scale, 1));
  transform-origin: center;
  will-change: transform;
  filter: drop-shadow(0 6px 18px var(--shadow-light));
}

.home__img:hover .home__blob {
  filter: drop-shadow(0 10px 24px var(--shadow-medium));
}

/* Optimized blob animation */
.home__blob {
  transition: all var(--duration-normal) var(--ease-gentle);
}

/* Use variable scale here as well to avoid overriding tilt transforms */
.home__img:hover .home__blob {
  --scale: 1.02;
}
/*==================== MEDIA QUERIES ====================*/
/* Font size for large devices */
@media screen and (min-width: 968px) {
  :root {
    --big-font-size: 3rem;
    --h1-font-size: 2.25rem;
    --h2-font-size: 1.5rem;
    --h3-font-size: 1.25rem;
    --normal-font-size: 1rem;
    --small-font-size: 0.875rem;
    --smaller-font-size: 0.813rem;
  }
}

/***** Small devices *****/
@media screen and (max-width: 350px) {
  .container {
    margin-left: var(--mb-1);
    margin-right: var(--mb-1);
  }

  .nav__menu {
    padding: 2rem 0.25rem 4rem;
  }
  .nav__list {
    column-gap: 0;
  }

  .home__content {
    grid-template-columns: 0.25fr 3fr;
  }
  .home__blob {
    width: 180px;
  }
}

/***** Medium devices *****/
@media screen and (min-width: 568px) {
  .home__content {
    grid-template-columns: max-content 1fr 1fr;
  }
  .home__data {
    grid-column: initial;
  }
  .home__img {
    order: 1;
    justify-self: center;
  }
}

@media screen and (min-width: 768px) {
  .container {
    margin-left: auto;
    margin-right: auto;
  }

  body {
    margin: 0;
  }

  .section {
    padding: 6rem 0 2rem;
  }
  .section__subtitle {
    margin-bottom: 4rem;
  }

  .header {
    top: 0;
    bottom: initial;
  }
  .header,
  .main {
    padding: 0 1rem;
  }

  .nav {
    height: calc(var(--header-height) + 1.5rem);
    column-gap: 1rem;
  }
  .nav__icon,
  .nav__close,
  .nav__toggle {
    display: none;
  }
  .nav__list {
    display: flex;
    column-gap: 2rem;
  }
  .nav__menu {
    margin-left: auto;
  }

  .home__container {
    row-gap: 5rem;
  }
  .home__content {
    padding-top: 5.5rem;
    column-gap: 2rem;
  }
  .home__blob {
    width: 270px;
  }
}

/* For large devices */
@media screen and (min-width: 1024px) {
  .header,
  .main {
    padding: 0;
  }

  .home__blob {
    width: 320px;
  }
  .home__social {
    transform: translateX(-6rem);
  }
}

/* Meta logo – compact override for final visual match */
.home__description .company-logo__image--meta {
  height: 13px !important;
}
@media screen and (min-width: 768px) {
  .home__description .company-logo__image--meta {
    height: 13px !important;
  }
}
@media screen and (min-width: 1024px) {
  .home__description .company-logo__image--meta {
    height: 14px !important;
  }
}