:root {

  /**
 * colors
 */

  --gold-web-golden: hsl(0, 0%, 34%); /* caliboii */
  --spanish-orange: hsl(0, 5%, 38%);    
  --persian-green: hsl(207, 77%, 44%);
  --granite-gray: hsl(0, 0%, 40%);
  --spring-green: hsl(206, 85%, 58%);
  --ultramarine: #8899d3; /* quan */
  --blue-violet: #927BB8;  
  --smoky-black: hsl(71, 17%, 43%);
  --dark-orange: #f0aa89; /* don */
  --winter-sky: #ebc6b5;
  --cultured-1: #E0FBFC;
  --cultured-2: #E0FBFC;
  --cultured-3: #E0FBFC;
  --light-gray: #E0FBFC;
  --alice-blue: hsl(210, 2%, 20%);
  --white_50: hsla(0, 0%, 20%, 0.5);
  --white-1: #E0FBFC;
  --white-2: #E0FBFC;
  --black: hsl(205, 95%, 50%);

  /**
 * typography
 */

  --ff-spartan: 'League Spartan', sans-serif;

  --fs-1: 3rem;
  --fs-2: 2.7rem;
  --fs-3: 2.2rem;
  --fs-4: 1.8rem;
  --fs-5: 1.6rem;

  --fw-400: 400;
  --fw-500: 500;
  --fw-600: 600;
  --fw-700: 700;
  --fw-900: 900;

  /**
 * spacing
 */

  --section-padding: 60px;

  /**
 * box shadow
 */

  --shadow-1: 0 2px 25px #398f92;
  --shadow-2: 0 8px 14px #398f92;
  --shadow-3: 0 14px 30px #398f92;

  /**
 * border radius
 */

  --radius-6: 6px;
  --radius-12: 12px;

  /**
 * gradient
 */

  --gradient-1: linear-gradient(to right, var(--winter-sky), var(--dark-orange));
  --gradient-2: linear-gradient(to right, var(--ultramarine), var(--blue-violet));
  --gradient-3: linear-gradient(to right, var(--winter-sky), var(--dark-orange));
  --gradient-4: linear-gradient(to right, var(--ultramarine), var(--blue-violet));
  --gradient-5: linear-gradient(to right, var(--persian-green), var(--spring-green));
  --gradient-6: linear-gradient(to right, var(--spanish-orange), var(--gold-web-golden));

  /**
 * transition
 */

  --transition-1: 0.25s ease;
  --transition-2: 0.5s ease;
  --cubic-out: cubic-bezier(0.33, 0.85, 0.4, 0.96);

}





/*-----------------------------------*\
#RESET
\*-----------------------------------*/

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

li {
  list-style: none;
}

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

a,
img,
svg,
span,
input,
button,
strong,
ion-icon {
  display: block;
}

img {
  height: auto;
}

input,
button {
  background: none;
  border: none;
  font: inherit;
}

input {
  width: 100%;
}

button {
  cursor: pointer;
}

ion-icon {
  pointer-events: none;
}

html {
  font-family: var(--ff-spartan);
  font-size: 10px;
  scroll-behavior: smooth;
}

body {
  background-color: var(--white-1);
  color: var(--granite-gray);
  font-size: 1.6rem;
}

:focus-visible {
  outline-offset: 4px;
}





/*-----------------------------------*\
#REUSED STYLE
\*-----------------------------------*/

.container {
  padding-inline: 15px;
}

.section {
  padding-block: var(--section-padding);
}

.w-100 {
  width: 100%;
}

.h1,
.h2,
.h3 {
  color: var(--black);
  font-weight: var(--fw-900);
  line-height: 1.3;
}

.h1 {
  font-size: var(--fs-1);
}

.h2 {
  font-size: var(--fs-2);
}

.h3 {
  font-size: var(--fs-3);
  font-weight: var(--fw-600);
}

.section-text {
  line-height: 1.7;
}

.btn {
  min-height: 50px;
  color: var(--white-1);
  padding-inline: 25px;
  border-radius: var(--radius-6);
}

.btn-primary {
  background-image: var(--gradient-1);
}

.btn-secondary {
  background-image: var(--gradient-2);
}

.btn-link {
  display: flex;
  align-items: center;
  gap: 5px;
  transition: var(--transition-1);
}

.btn-link:is(:hover, :focus) {
  letter-spacing: 0.3px;
}





/*-----------------------------------*\
#HEADER
\*-----------------------------------*/

.header .btn {
  display: none;
}

.header {
  background-color: var(--white-1);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  padding-block: 20px;
  z-index: 4;
}

.header.active {
  position: fixed;
  top: -75px;
  box-shadow: var(--shadow-1);
  animation: slide-in 0.5s var(--cubic-out) forwards;
}

@keyframes slide-in {
  0% {
      transform: translateY(0);
  }

  100% {
      transform: translateY(75px);
  }
}

.header>.container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.logo {
  color: var(--smoky-black);
  font-size: 3.5rem;
  font-weight: var(--fw-700);
  line-height: 1;
}

.nav-toggle-btn {
  font-size: 30px;
}

.nav-toggle-btn.active .menu-icon,
.nav-toggle-btn .close-icon {
  display: none;
}

.nav-toggle-btn .menu-icon,
.nav-toggle-btn.active .close-icon {
  display: block;
}

.navbar {
  position: absolute;
  top: 100%;
  left: 50%;
  width: calc(100% - 30px);
  transform: translateX(-50%);
  background-color: var(--white-1);
  box-shadow: var(--shadow-2);
  overflow: hidden;
  visibility: hidden;
  max-height: 0;
  transition: 0.25s var(--cubic-out);
}

.navbar.active {
  visibility: visible;
  max-height: 300px;
  transition-duration: 0.35s;
}

.navbar-item:not(:last-child) {
  border-block-end: 1px solid var(--alice-blue);
}

.navbar-link {
  color: var(--black);
  font-size: var(--fs-4);
  font-weight: var(--fw-500);
  padding: 16px;
  transition: var(--transition-1);
}

.navbar-link:is(:hover, :focus) {
  color: var(--winter-sky);
}





/*-----------------------------------*\
#HERO
\*-----------------------------------*/

.hero {
  padding-block-start: calc(73px + var(--section-padding));
  background-color: var(--cultured-1);
}
/*
.hero-banner {
  /*   background-color: var(--light-gray); */
  border-radius: 50%;
  aspect-ratio: 1 / 0.8;

/*
.hero-banner img {
  border-radius: 50%;
}

.hero-title {
  margin-block: 30px 15px;
}

.hero-form {
  margin-block: 20px 30px;
}
*/
.input-field {
  background-color: var(--cultured-3);
  padding: 20px 15px;
  border-radius: var(--radius-6);
  margin-block-end: 15px;
}

.input-field::placeholder {
  transition: var(--transition-1);
}

.input-field:focus::placeholder {
  opacity: 0;
}

.hero-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.hero-item {
  display: flex;
  align-items: center;
  gap: 5px;
}





/*-----------------------------------*\
#SERVICE
\*-----------------------------------*/

.service {
  background-color: var(--white-1);
}

.service :is(.section-title, .section-text) {
  text-align: center;
}

.service .section-text {
  margin-block: 10px 35px;
}

.service-list {
  display: grid;
  gap: 25px;
}

.service-card {
  border-radius: var(--radius-6);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}

.service-card .card-banner {
  background-color: var(--light-gray);
  /* aspect-ratio: 1 / 0.47; */
}

.service-card .card-content {
  padding: 20px;
}

.service-card .card-title {
  transition: var(--transition-1);
}

.service-card .card-title:is(:hover, :focus) {
  color: var(--winter-sky);
}

.service-card .card-text {
  margin-block: 10px 20px;
  line-height: 1.8;
}

.service-card .btn-link {
  color: var(--ultramarine);
}





/*-----------------------------------*\
#FEATURES
\*-----------------------------------*/

.features {
  background-color: var(--white-2);
}

.features .section-text {
  margin-block: 10px 15px;
}

.features-content {
  margin-block-end: 25px;
}

.features-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--white-1);
  padding: 15px;
  box-shadow: var(--shadow-3);
  border-radius: var(--radius-6);
}

.features-item:not(:last-child) {
  margin-block-end: 15px;
}

.features-item .item-title {
  color: var(--black);
  font-size: var(--fs-5);
  font-weight: var(--fw-600);
}

.features-banner {
  max-width: max-content;
  /*   background-color: var(--light-gray); */
  border-radius: var(--radius-12);
  overflow: hidden;
}

.features-banner.one {
  aspect-ratio: 1 / 0.83;
  margin-block-end: 25px;
}

.features-banner.two {
  margin-inline: auto;
  aspect-ratio: 1 / 0.71;
}





/*-----------------------------------*\
#ABOUT
\*-----------------------------------*/

.about {
  text-align: center;
}

.about .section-text:first-of-type {
  margin-block: 5px 30px;
}

.about-list {
  display: grid;
  gap: 25px;
}

.about-card {
  color: var(--white-1);
  padding: 20px;
  border-radius: var(--radius-12);
}

.about-card-1 {
  background-image: var(--gradient-3);
}

.about-card-2 {
  background-image: var(--gradient-4);
}

.about-card-3 {
  background-image: var(--gradient-5);
}

.about-card-4 {
  background-image: var(--gradient-6);
}

.about-card .card-banner {
  min-width: 150px;
  height: 150px;
  aspect-ratio: 1 / 1;
  background-color: var(--white_50);
  border-radius: 50%;
  display: grid;
  place-items: center;
  margin-inline: auto;
  transition: var(--transition-2);
}

.about-card:is(:hover, :focus-within) .card-banner {
  background-color: var(--white-1);
}

.about-card .card-title {
  color: var(--white-1);
  margin-block: 20px 10px;
}

.about-card .card-text {
  line-height: 1.8;
  margin-block-end: 15px;
}

.about .btn-link {
  justify-content: center;
}

.about .section-text:last-of-type {
  max-width: 50ch;
  margin-inline: auto;
  margin-block-start: 25px;
}

.about .section-text:last-of-type .btn-link {
  color: var(--blue-violet);
  display: inline-flex;
}

.about .section-text:last-of-type .btn-link:is(:hover, :focus) {
  color: var(--winter-sky);
  letter-spacing: 0;
}





/*-----------------------------------*\
#STATS
\*-----------------------------------*/

.stats {
  background-color: var(--cultured-2);
}

.stats-banner {
  max-width: max-content;
  margin-inline: auto;
  aspect-ratio: 1 / 0.78;
  margin-block-end: 25px;
}

.stats-list {
  display: grid;
  gap: 25px;
}

.stats-item {
  position: relative;
  padding-block: 5px;
  padding-inline-start: 15px;
}

.stats-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  border-radius: 5px;
}

.stats-item.purple::before {
  background-color: var(--ultramarine);
}

.stats-item.red::before {
  background-color: var(--winter-sky);
}

.stats-item.green::before {
  background-color: var(--spring-green);
}

.stats-item.yellow::before {
  background-color: var(--dark-orange);
}

.stats-item .item-title {
  color: var(--black);
  font-size: 3.5rem;
  font-weight: var(--fw-900);
  margin-block-end: 5px;
}

.stats-item .item-title .span {
  color: var(--granite-gray);
  font-weight: var(--fw-400);
  display: inline-block;
  font-size: var(--fs-4);
}





/*-----------------------------------*\
#APP
\*-----------------------------------*/

.app-content {
  margin-block-end: 25px;
}

.app .section-text {
  margin-block: 5px 10px;
}

.app .btn-group {
  display: flex;
  gap: 15px;
}

.app .btn {
  min-height: auto;
  padding: 15px;
}

.app .btn img {
  margin-block-end: 10px;
}

.app .btn .strong {
  margin-block-start: 5px;
  font-weight: var(--fw-600);
}

.app-banner {
  max-width: max-content;
  margin-inline: auto;
  aspect-ratio: 1 / 0.72;
}





/*-----------------------------------*\
#SUPPORT
\*-----------------------------------*/

.support {
  background-image: var(--gradient-2);
  color: var(--white-1);
}

.support .section-title {
  color: var(--white-1);
}

.support .section-text {
  margin-block: 10px 15px;
}

.support .btn {
  max-width: max-content;
  display: grid;
  place-items: center;
}





/*-----------------------------------*\
#FOOTER
\*-----------------------------------*/

.footer-top {
  background-color: var(--cultured-1);
}

.footer-top .container {
  display: grid;
  gap: 25px;
}

.footer .logo {
  margin-block-end: 25px;
}

.footer-img {
  max-width: max-content;
}

.footer-list-title {
  color: var(--black);
  font-size: var(--fs-3);
  font-weight: var(--fw-600);
  margin-block-end: 20px;
}

.footer-list>li:not(:last-child) {
  margin-block-end: 15px;
}

.footer-link {
  position: relative;
  max-width: max-content;
  transition: var(--transition-1);
}

.footer-link::after {
  content: "";
  position: absolute;
  top: 6px;
  left: calc(100% + 10px);
  background-color: var(--ultramarine);
  width: 20px;
  height: 2px;
  transition: var(--transition-1);
  opacity: 0;
}

.footer-link:is(:hover, :focus) {
  color: var(--ultramarine);
}

.footer-link:is(:hover, :focus)::after {
  opacity: 1;
}

.footer-item {
  display: flex;
  align-items: baseline;
  gap: 5px;
}

.footer-item .span {
  color: var(--black);
}

.footer-item-link {
  display: inline-block;
  color: var(--granite-gray);
  transition: var(--transition-1);
}

.footer-item-link:is(:hover, :focus) {
  color: var(--ultramarine);
}

.footer-bottom {
  padding-block: 25px;
  text-align: center;
  line-height: 1.3;
}

.copyright {
  margin-block-end: 15px;
}

.copyright .span {
  display: inline-block;
  color: var(--winter-sky);
  font-weight: var(--fw-500);
}

.copyright-link {
  display: inline-block;
  font-weight: var(--fw-600);
  background-image: var(--gradient-3);
  -webkit-text-fill-color: transparent;
  background-clip: text;
  -webkit-background-clip: text;
}

.footer-bottom-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 5px 20px;
}

.footer-bottom-link {
  transition: var(--transition-1);
}

.footer-bottom-link:is(:hover, :focus) {
  color: var(--ultramarine);
}





/*-----------------------------------*\
#BACK TO TOP
\*-----------------------------------*/

.back-top-btn {
  background-color: var(--white-1);
  color: var(--black);
  position: fixed;
  bottom: 10px;
  right: 20px;
  border: 1px solid var(--light-gray);
  font-size: 2.2rem;
  padding: 12px;
  border-radius: 50%;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-1);
  z-index: 4;
}

.back-top-btn.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(-10px);
}





/*-----------------------------------*\
#MEDIA QUERIES
\*-----------------------------------*/

/**
* responsive for large than 480px screen
*/

@media (min-width: 480px) {

  /**
 * REUSED STYLE
 */

  .header .btn {
      display: block;
      margin-inline-start: auto;
      min-height: 40px;
      padding-inline: 15px;
  }

}





/**
* responsive for large than 575px screen
*/

@media (min-width: 575px) {

  /**
 * REUSED STYLE
 */

  .container {
      max-width: 540px;
      margin-inline: auto;
  }



  /**
 * HERO
 */

  .hero-form {
      position: relative;
  }

  .hero-form .btn {
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
  }



  /**
 * SERVICE, ABOUT, STATS, FOOTER
 */

  .service-list,
  .about-list,
  .stats-list,
  .footer-top .container {
      grid-template-columns: 1fr 1fr;
  }



  /**
 * ABOUT
 */

  .about-card {
      min-height: 100%;
  }



  /**
 * APP
 */

  .app .btn {
      display: flex;
      align-items: center;
      gap: 15px;
      padding-inline: 25px;
  }

  .app .btn img {
      margin-block-end: 0;
  }

}





/**
* responsive for large than 768px screen
*/

@media (min-width: 768px) {

  /**
 * RESET
 */

  body {
      font-size: 2rem;
  }



  /**
 * CUSTOM PROPERTY
 */

  :root {

      /**
   * typography
   */

      --fs-1: 5rem;
      --fs-2: 3.5rem;
      --fs-3: 2.5rem;

  }



  /**
 * REUSED STYLE
 */

  .container {
      max-width: 720px;
  }



  /**
 * HEADER
 */

  .header .btn {
      font-size: 1.7rem;
      font-weight: var(--fw-500);
      min-height: 45px;
      padding-inline: 25px;
  }



  /**
 * SERVICE
 */

  .service-card {
      --radius-6: 16px;
  }

  .service-card .card-content {
      padding: 30px;
  }



  /**
 * FEATURES
 */

  .features-item .item-title {
      --fs-5: 2rem;
  }

  .features-banner.two {
      margin-inline: auto 0;
      margin-block-start: -180px;
  }



  /**
 * STATS
 */

  .stats-list {
      padding-inline: 60px;
  }

  .stats-item {
      padding-inline-start: 20px;
  }

  .stats-item .item-title {
      font-size: 4rem;
  }



  /**
 * APP
 */

  .app .btn {
      padding: 20px 30px;
  }

  .app-content .span {
      font-size: 1.5rem;
  }

  .app-content .strong {
      font-size: 2rem;
  }

}





/**
* responsive for large than 992px screen
*/

@media (min-width: 992px) {

  /**
 * CUSTOM PROPERTY
 */

  :root {

      /**
   * typography
   */

      --fs-2: 4rem;
      --fs-3: 2.9rem;

      /**
   * spacing
   */

      --section-padding: 100px;

  }



  /**
 * REUSED STYLE
 */

  .container {
      max-width: 960px;
  }

  :is(.service, .about, .app) .section-text {
      max-width: 55ch;
      margin-inline: auto;
  }



  /**
 * HEADER
 */

  .nav-toggle-btn {
      display: none;
  }

  .navbar,
  .navbar.active {
      all: unset;
  }

  .navbar-list {
      display: flex;
      gap: 5px;
  }

  .navbar-item:not(:last-child) {
      border-block-end: none;
  }

  .navbar-link {
      --fs-4: 2rem;
  }

  .header .btn {
      margin-inline-start: 0;
      min-height: 50px;
      padding-inline: 40px;
  }



  /**
 * HERO
 */

  .hero .container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 50px;
  }

  .hero-title {
      margin-block-start: 0;
  }



  /**
 * SERVICE
 */

  .service-list {
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
  }



  /**
 * FEATURES
 */

  .features .container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      align-items: center;
      gap: 25px;
  }

  .features-content {
      margin-block-end: 0;
  }

  .features-item {
      padding: 20px;
  }

  .features-item:not(:last-child) {
      margin-block-end: 20px;
  }

  .features-item .item-title {
      --fs-5: 2.4rem;
  }



  /**
 * ABOUT
 */

  .about-list {
      gap: 30px;
  }

  .about-card {
      padding: 40px;
  }



  /**
 * STATS
 */

  /*
.stats .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: flex-start;
}

.stats-banner { margin-block-end: 0; }

.stats-list { grid-template-columns: 1fr; }

.stats-item:nth-child(even) { margin-inline-start: auto; }

.stats-item .item-title { font-size: 4.5rem; }

.stats-text { font-size: 2.2rem; }
*/



  /**
 * APP
 */

  .app :is(.section-title, .section-text) {
      text-align: center;
  }

  .app .btn-group {
      justify-content: center;
  }



  /**
 * SUPPORT
 */

  .support .container {
      display: grid;
      grid-template-columns: 1fr 0.5fr;
      justify-items: self-end;
      align-items: center;
  }



  /**
 * FOOTER
 */

  .footer .container {
      grid-template-columns: 1fr 0.8fr 0.8fr 1fr;
  }

  .footer-list-title {
      margin-block-end: 30px;
  }

  .footer-list>li:not(:last-child) {
      margin-block-end: 25px;
  }

  .footer-bottom {
      padding-block: 30px;
  }

  .footer-bottom .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
  }

  .copyright {
      margin-block-end: 0;
  }

}





/**
* responsive for large than 1200px screen
*/

@media (min-width: 1200px) {

  /**
 * CUSTOM PROPERTY
 */

  :root {

      /**
   * typography
   */

      --fs-1: 6rem;
      --fs-2: 5rem;

  }



  /**
 * REUSED STYLE
 */

  .container {
      max-width: 1140px;
  }



  /**
 * FEATURES
 */

  .features .container {
      grid-template-columns: 1fr max-content;
      gap: 70px;
  }



  /**
 * ABOUT
 */

  .about-card {
      display: flex;
      align-items: center;
      gap: 30px;
      text-align: left;
  }

  .about-card .card-title {
      margin-block-start: 0;
  }

  .about .btn-link {
      justify-content: flex-start;
  }



  /**
 * APP
 */

  .app .container {
      display: grid;
      grid-template-columns: 0.7fr 1fr;
      align-items: center;
      gap: 25px;
  }

  .app-content {
      margin-block-end: 0;
  }

  .app :is(.section-title, .section-text) {
      text-align: left;
  }

  .app .section-title {
      --fs-2: 4rem;
  }

  .app .btn-group {
      justify-content: flex-start;
  }

}

/*
Pricing
*/

.columns {
  background: linear-gradient(#375360, rgb(90, 100, 112));
  border-radius: 4px;
  color: rgba(255, 255, 255, 0.5);
  display: flex;
  flex-direction: column;
}

.columns .callout {
  padding: 30px;
}

.columns .price-header {
  font-size: 2em;
  font-weight: bolder;
  color: white;
  text-align: center;
}

.columns ul li {
  margin: 20px 0;
  list-style-type: disc;
  list-style-position: inside;
  text-align: center;
}

.columns .button {
  background: linear-gradient(#1c3095);
  display: flex;
  color: white;
  padding: 20px;
  border-radius: 4px;
  align-items: center;
  justify-content: center;
  font-weight: bolder;
  border: 1px solid transparent;
}

.columns .button:hover {
  border: 1px solid gray;
}