/*-----------------------------------*\
  #style.css
\*-----------------------------------*/

/**
 * copyright 2022 codewithsadee
 */





/*-----------------------------------*\
  #CUSTOM PROPERTY
\*-----------------------------------*/

:root {

  /**
   * colors
   */

  --cadet-blue-crayola: hsl(240, 10%, 70%);
  --gold-web-golden: hsl(50, 100%, 54%);
  --vivid-sky-blue: hsl(196, 84%, 63%);
  --midnight-blue: hsl(231, 83%, 25%);
  --minion-yellow: hsl(50, 100%, 64%);
  --independence: hsl(225, 24%, 27%);
  --orange-soda: hsl(7, 96%, 61%);
  --space-cadet: hsl(243, 23%, 18%);
  --fiery-rose: hsl(353, 83%, 65%);
  --klein-blue: hsl(230, 80%, 39%);
  --bluetiful: hsl(222, 88%, 55%);
  --glaucous: hsl(230, 52%, 63%);
  --manatee: hsl(254, 7%, 65%);
  --rufous: hsl(2, 85%, 35%);
  --black: hsl(0, 0%, 0%);
  --white: hsl(0, 0%, 100%);

  /**
   * typography
   */

  --ff-open-sans: 'Open Sans', sans-serif;
  --ff-barlow: 'Barlow', sans-serif;
  --ff-poppins: 'Poppins', sans-serif;

  --fs-1: 3.5rem;
  --fs-2: 3rem;
  --fs-3: 2.4rem;
  --fs-4: 2rem;
  --fs-5: 1.8rem;
  --fs-6: 1.3rem;

  --fw-600: 600;
  --fw-700: 700;

  /**
   * border radius
   */

  --radius-5: 5px;
  --radius-10: 10px;
  --radius-15: 15px;
  --radius-20: 20px;

  /**
   * spacing
   */

  --section-padding: 60px;

  /**
   * shadow
   */

  --shadow: 0 -5px 10px var(--manatee);

  /**
   * transition
   */

  --transition-1: 0.05s ease;
  --transition-2: 0.25s ease;
  --cubic-out: cubic-bezier(0.33, 0.85, 0.56, 1.02);

}





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

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

li { list-style: none; }

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

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

img { height: auto; }

ion-icon {
  pointer-events: none;
  color: var(--white);
}

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

button { cursor: pointer; }

input,
textarea { width: 100%; }

address { font-style: normal; }

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

body {
  background-color: var(--space-cadet);
  color: var(--cadet-blue-crayola);
  font-size: 1.6rem;
  line-height: 1.6;
  overflow-x: hidden;
}

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

::-webkit-scrollbar { width: 15px; }

::-webkit-scrollbar-track { background-color: hsl(0, 0%, 95%); }

::-webkit-scrollbar-thumb { background-color: hsl(0, 0%, 80%); }

::-webkit-scrollbar-thumb:hover { background-color: hsl(0, 0%, 70%); }





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

.container { padding-inline: 20px; }

.btn {
  color: var(--white);
  font-family: var(--ff-barlow);
  font-size: var(--fs-5);
  font-weight: var(--fw-600);
  max-width: max-content;
  padding: var(--padding, 10px 40px);
  border-radius: 50px;
  transition: var(--transition-2);
}

.btn-primary.blue { background-color: var(--klein-blue); }

.btn-primary.blue:is(:hover, :focus) { background-color: var(--orange-soda); }

.img-cover {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

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

.section-subtitle {
  color: var(--orange-soda);
  font-family: var(--ff-barlow);
  font-size: var(--fs-4);
  text-align: center;
}

.h2,
.h3 {
  color: var(--white);
  font-family: var(--ff-barlow);
  font-weight: var(--fw-600);
  line-height: 1.3;
}

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

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

.section-title,
.section-text { text-align: center; }





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

.header {
  position: fixed;
  padding-block: 15px;
  width: 100%;
  background-color: var(--space-cadet);
  height: 65px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: 0.25s var(--cubic-out);
  z-index: 4;
}

.header.nav-active {
  height: 335px;
  transition-duration: 0.35s;
}

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

.logo {
  color: var(--white);
  font-family: var(--ff-poppins);
  font-size: 2.4rem;
}

.nav-toggle-btn { font-size: 3rem; }

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

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

.navbar {
  position: absolute;
  top: 65px;
  left: 0;
  width: 100%;
  padding-inline: 20px;
  visibility: hidden;
  opacity: 0;
  transition: var(--transition-2);
}

.header.nav-active .navbar {
  visibility: visible;
  opacity: 1;
}

.navbar-link {
  color: var(--white);
  font-family: var(--ff-barlow);
  padding-block: 3px;
  transition: var(--transition-1);
}

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

.navbar .btn {
  background-color: var(--orange-soda);
  margin-block-start: 15px;
}





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

.elem,
.rotate-img { display: none; }

.hero {
  background-image: url("../images/hero-bg.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  padding-block: 100px var(--section-padding);
  min-height: 100vh;
  display: grid;
  place-items: center;
}
.hero1 {
  background-image: url("../images/hero-bg.jpg");
  background-repeat: no-repeat;
  background-size: 100% 50%; /* Giữ nguyên chiều rộng, chiều cao còn 50% */
  background-position: center;
  padding-block: 100px var(--section-padding);
  min-height: 100vh;
  display: grid;
  place-items: center;
  text-align: center; /* Căn giữa nội dung */
}
.hero-banner {
  width: 150px;
  height: 172px;
  background-color: var(--independence);
  border-radius: var(--radius-10);
  margin-inline: auto;
  margin-block-end: 30px;
}

.hero-banner img { border-radius: inherit; }

.hero-content {
  text-align: center;
  color: var(--white);
}

.hero-title {
  font-family: var(--ff-barlow);
  font-size: var(--fs-5);
  font-weight: var(--fw-600);
  line-height: 1.3;
  margin-block-end: 14px;
}

.hero-title strong {
  font-size: var(--fs-1);
  font-weight: inherit;
  margin-block-end: 8px;
}

.hero-text { margin-block-end: 25px; }

.btn-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 10px;
}





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

.abs-img,
.abs-icon { display: none; }

.about { padding-block-start: 120px; }

.about-banner {
  background-color: var(--independence);
  border-radius: var(--radius-10);
  margin-block-end: 30px;
}

.about-banner > .img-cover { border-radius: inherit; }

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

.about :is(.section-title, .section-text) { margin-block-end: 30px; }





/*-----------------------------------*\
  #PORTFOLIO
\*-----------------------------------*/

.portfolio .section-title { margin-block-end: 18px; }

.portfolio .section-text { margin-block-end: 80px; }

.portfolio-list {
  display: grid;
  gap: 60px;
}

.portfolio-card {
  background-color: var(--independence);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  padding: 120px 20px;
  border-radius: var(--radius-20);
  font-family: var(--ff-barlow);
  color: var(--white);
  font-weight: var(--fw-600);
  transition: var(--transition-2);
}

.portfolio-list > li:nth-child(even) .card-content { margin-inline-start: auto; }

.portfolio-card .card-subtitle {
  color: var(--orange-soda);
  margin-block-end: 5px;
}

.portfolio-card .card-title {
  max-width: 20ch;
  margin-block-end: 20px;
}

.portfolio-card .btn-link {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--fs-6);
  text-transform: uppercase;
}

.portfolio-card .btn-link ion-icon {
  color: var(--orange-soda);
  font-size: 1.6rem;
}





/*-----------------------------------*\
  #SKILLS
\*-----------------------------------*/

.skills .section-title { margin-block-end: 20px; }

.skills .section-text { margin-block-end: 70px; }

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

.skills-item .wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-block-end: 10px;
}

.skills-title,
.skills-data {
  color: var(--white);
  font-size: var(--fs-5);
  font-family: var(--ff-barlow);
  font-weight: var(--fw-600);
}

.skills-progress-box {
  background-color: var(--white);
  height: 8px;
  border-radius: var(--radius-10);
}

.skills-progress {
  background-color: var(--orange-soda);
  height: 100%;
  border-radius: inherit;
}





/*-----------------------------------*\
  #CONTACT
\*-----------------------------------*/

.contact-card {
  background-color: var(--midnight-blue);
  padding: 50px 25px;
  border-radius: var(--radius-20);
}

.contact-card .card-subtitle {
  color: var(--orange-soda);
  font-family: var(--ff-barlow);
  font-size: var(--fs-4);
  font-weight: var(--fw-600);
}

.contact .section-title {
  text-align: left;
  margin-block-end: 30px;
}

.contact-form { margin-block-end: 50px; }

.contact-input {
  background-color: var(--white);
  color: var(--manatee);
  border-radius: var(--radius-5);
  padding: 15px 25px;
  font-size: var(--fs-5);
  margin-block-end: 15px;
}

.contact-input::placeholder { color: inherit; }

textarea.contact-input {
  resize: vertical;
  min-height: 100px;
  height: 180px;
  max-height: 300px;
}

.btn-submit {
  background-color: var(--orange-soda);
  color: var(--white);
  font-family: var(--ff-barlow);
  font-size: var(--fs-5);
  width: 100%;
  padding: 10px;
  border-radius: var(--radius-5);
  transition: var(--transition-2);
}

.btn-submit:is(:hover, :focus) {
  background-color: var(--white);
  color: var(--black);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 15px;
}

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

.contact-icon {
  background-color: var(--glaucous);
  font-size: 2.4rem;
  padding: 20px;
  border-radius: 50%;
}

.contact-item-title {
  color: var(--white);
  font-family: var(--ff-barlow);
  font-size: var(--fs-4);
  font-weight: var(--fw-600);
}

.contact-item-link { transition: var(--transition-1); }

.contact-item-link:not(address):is(:hover, :focus) { color: var(--white); }





/*-----------------------------------*\
  #BLOG
\*-----------------------------------*/

.blog { padding-block-end: 120px; }

.blog .section-title { margin-block-end: 20px; }

.blog .section-text { margin-block-end: 80px; }

.blog-list {
  display: grid;
  gap: 40px;
}

.blog-card { font-family: var(--ff-barlow); }

.blog-card .card-banner {
  background-color: var(--independence);
  border-radius: var(--radius-15);
  overflow: hidden;
  margin-block-end: 20px;
}

.blog-card .card-banner img { transition: var(--transition-2); }

.blog-card .card-banner a:is(:hover, :focus) img { transform: scale(1.1); }

.blog-card .card-banner:focus-within {
  outline: 2px solid var(--white);
  outline-offset: 4px;
}

.blog-card .card-tag {
  color: var(--orange-soda);
  margin-block-end: 5px;
}

.blog-card .card-title {
  color: var(--white);
  font-weight: var(--fw-600);
  line-height: 1.3;
}

.blog-card .card-title a { transition: var(--transition-2); }

.blog-card .card-title a:is(:hover, :focus) { color: var(--orange-soda); }





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

.footer {
  background-color: var(--independence);
  padding-block: 60px;
}

.copyright {
  max-width: max-content;
  margin-inline: auto;
  margin-block-end: 10px;
}

.copyright-link {
  display: inline-block;
  transition: var(--transition-2);
  font-weight: var(--fw-600);
}

.copyright-link:is(:hover, :focus) { color: var(--white); }

.footer-list {
  max-width: max-content;
  margin-inline: auto;
}

.footer-list * { display: inline-block; }

.footer-list > li:not(:last-child) { margin-inline-end: 40px; }

.footer-link { transition: var(--transition-2); }

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





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

.back-to-top {
  color: var(--white);
  font-size: 1.3rem;
  position: fixed;
  bottom: 160px;
  right: -30px;
  transform: rotate(0.25turn);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-2);
  z-index: 1;
}

.back-to-top.active {
  right: -5px;
  opacity: 1;
  visibility: visible;
}

.back-to-top::after {
  content: "";
  position: absolute;
  top: 10px;
  left: calc(100% + 7px);
  width: 100px;
  height: 1px;
  background-color: var(--white);
}





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

/**
 * responsive for larger than 600px screen
 */

@media (min-width: 600px) {

  /**
   * PORTFOLIO
   */

  .portfolio-list li:nth-child(even) .card-content { margin-inline-start: 50%; }

}





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

@media (min-width: 768px) {

  /**
   * PORTFOLIO
   */

  .portfolio-card {
    background-size: 115%;
    padding-inline: 80px;
  }

  .portfolio-card:is(:hover, :focus) { background-size: 130%; }



  /**
   * SKILLS, BLOG
   */

  .skills-list,
  .blog-list {
    grid-template-columns: 1fr 1fr;
    column-gap: 50px;
  }

}





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

@media (min-width: 992px) {

  /**
   * CUSTOM PROPERTY
   */

  :root {

    /**
     * typography
     */

    --fs-1: 6.4rem;
    --fs-2: 3.5rem;
    --fs-3: 3.6rem;

    /**
     * spacing
     */

    --section-padding: 80px;

  }



  /**
   * REUSED STYLE
   */

  .container {
    max-width: 1050px;
    margin-inline: auto;
  }



  /**
   * HEADER
   */

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

  .header,
  .header.nav-active {
    background-color: transparent;
    box-shadow: none;
    height: unset;
    padding-block: 30px;
  }

  .header.active {
    background-color: var(--space-cadet);
    box-shadow: var(--shadow);
    padding-block: 20px;
  }

  .navbar { all: unset; }

  .navbar-list {
    display: flex;
    align-items: center;
    gap: 30px;
  }

  .navbar .btn {
    margin-block-start: 0;
    --padding: 7px 30px;
  }



  /**
   * HERO
   */

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

  .hero-content { text-align: left; }

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

  .hero-title span { font-size: 3rem; }

  .hero-title {
    --fs-5: 2.2rem;
    margin-block-end: 25px;
  }

  .hero-text {
    margin-block-end: 25px;
    font-size: var(--fs-5);
  }

  .hero-banner {
    position: relative;
    margin-block-end: 0;
    order: 1;
    width: 340px;
    height: 390px;
    margin-inline: 0;
    margin-inline-start: auto;
  }

  .elem {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--white);
    border-radius: var(--radius-10);
    padding: 20px;
  }

  .elem-1 {
    top: 20px;
    left: -130px;
  }

  .elem-1 .elem-title { color: var(--vivid-sky-blue); }

  .elem-2 {
    bottom: 30px;
    right: -80px;
  }

  .elem-2 .elem-title { color: var(--fiery-rose); }

  .elem-title {
    font-size: 4.5rem;
    line-height: 1.1;
  }

  .elem-text {
    max-width: 10ch;
    color: var(--black);
    font-weight: var(--fw-700);
    line-height: 1.1;
  }

  .elem-3 {
    top: -40px;
    right: -30px;
  }

  .elem-3 ion-icon {
    color: var(--minion-yellow);
    font-size: 6rem;
  }

  .rotate-img {
    display: block;
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 120px;
    animation: rotate360 15s linear infinite reverse;
  }

  @keyframes rotate360 {
    0% { transform: rotate(0); }
    100% { transform: rotate(1turn); }
  }



  /**
   * ABOUT
   */

  .about { padding-block: 180px; }

  .about .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 80px;
  }

  .about-banner {
    position: relative;
    margin-block-end: 0;
  }

  .abs-img,
  .abs-icon {
    display: block;
    position: absolute;
  }

  .abs-img {
    width: 250px;
    height: 250px;
    object-fit: cover;
    border-radius: inherit;
    bottom: -150px;
    left: -100px;
  }

  .abs-icon {
    font-size: 5rem;
    padding: 20px;
    border-radius: inherit;
  }

  .abs-icon-1 {
    top: 50px;
    left: -120px;
    background-color: var(--bluetiful);
  }

  .abs-icon-2 {
    top: -40px;
    right: -40px;
    background-color: var(--gold-web-golden);
  }

  .abs-icon-3 {
    bottom: -40px;
    left: 250px;
    background-color: var(--rufous);
  }



  /**
   * PORTFOLIO
   */

  .portfolio-card .card-subtitle { font-size: var(--fs-5); }

  .portfolio-card .btn-link { --fs-6: 1.6rem; }



  /**
   * SKILLS
   */

  .skills-list { column-gap: 100px; }



  /**
   * CONTACT
   */

  .contact-card { padding: 100px; }

  .contact .wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
  }

  .contact-form { margin-block-end: 0; }

  .contact-item { gap: 25px; }

  .contact-icon { padding: 30px; }



  /**
   * BLOG
   */

  .blog { padding-block-end: 180px; }

  .blog-list {
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
  }

  

  /**
   * FOOTER
   */

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

  .copyright,
  .footer-list { margin-inline: 0; }

}


/* ==== Variables & helpers ==== */
:root {
  --section-bg: #f6e8df;          /* nền khu vực project */
  --text-main: #3e3c6e;           /* màu chữ chính */
  --heading: #160457;             /* tiêu đề */
  --accent: #192ff3;              /* xanh dương nhấn */
  --btn: #623686;                 /* nút chính */
  --btn-hover: #6d20c5d7;         /* hover nút */
  --card-shadow: rgba(240, 130, 5, 0.459);
  --card-shadow-hover: rgba(129, 72, 144, 0.561);
}

.purple { color: #c770f0 !important; }

/* ==== Section Projects ==== */
.project-section {
  background-color: var(--section-bg);
  position: relative;
  padding: 70px 0 !important;
}

.project-heading {
  color: var(--heading) !important;
  font-size: 2.3em !important;
  font-weight: 500 !important;
  padding-top: 10px !important;
  text-align: center;
  margin-bottom: 10px;
}

.lead-note {
  text-align: center;
  color: var(--text-main);
  margin: 0 auto 40px;
  max-width: 900px;
  padding: 0 12px;
}

/* ==== Project cards (khớp cấu trúc Bootstrap .card trong HTML) ==== */
.project-card { /* cột chứa card */
  padding: 50px 25px !important;
  height: auto !important;
}

.project-card .card {
  box-shadow: 0 4px 5px 3px var(--card-shadow) !important;
  color: var(--text-main) !important;
  background-color: rgba(247, 172, 59, 0.459) !important;
  opacity: 0.95 !important;
  transition: all 0.5s ease 0s !important;
  border: 0;
  border-radius: 18px;
  height: 100%;
}

.project-card .card:hover {
  transform: scale(1.02) !important;
  overflow: hidden !important;
  box-shadow: 0 4px 4px 5px var(--card-shadow-hover) !important;
}

/* Ảnh trên card */
.project-card img,
.card-img-top {
  padding: 20px !important;
  opacity: 0.9 !important;
  border-radius: 14px !important;
  height: 180px;
  object-fit: cover;
  width: 100%;
}

/* Tiêu đề & mô tả trong card */
.project-card .card-title {
  font-weight: 700;
  color: var(--heading);
}

.project-card .card-text {
  color: var(--text-main);
  text-align: left;
}

/* ==== Nút GitHub / Demo ==== */
.btn-primary {
  color: #fff !important;
  background-color: var(--btn) !important;
  border-color: var(--btn) !important;
  border-radius: 10px;
}

.btn-primary:hover {
  color: #fff !important;
  background-color: var(--btn-hover) !important;
  border-color: var(--btn-hover) !important;
}

.btn:focus {
  outline: none !important;
  box-shadow: none !important;
}

/* ==== Scrollbar (nhẹ nhàng, tuỳ chọn) ==== */
::-webkit-scrollbar { width: 7px; }
::-webkit-scrollbar-track { background: #5295dd; }
::-webkit-scrollbar-thumb {
  background: rgba(178, 121, 216, 0.959);
  border-radius: 12px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(222, 130, 235, 0.911);
}

/* ==== Responsive tweaks ==== */
@media (max-width: 991px) {
  .project-card { padding: 32px 16px !important; }
  .project-card img,
  .card-img-top { height: 160px; }
}

@media (max-width: 575px) {
  .project-heading { font-size: 2em !important; }
  .lead-note { font-size: 0.98rem; }
  .project-card img,
  .card-img-top { height: 150px; }
}



/* Enhanced Project Section */
.project-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(180deg,
      hsl(243, 23%, 18%) 0%,
      hsl(231, 83%, 20%) 100%);
  overflow: hidden;
}

.project-heading {
  text-align: center;
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  margin-bottom: 1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.02em;
  animation: fadeInUp 0.8s ease-out;
}

.project-heading .blue {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 50%, #ec4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradientShift 4s ease-in-out infinite;
}

@keyframes gradientShift {

  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}

.lead-note {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
  font-size: 1.125rem;
  line-height: 1.8;
  color: hsl(240, 10%, 75%);
  animation: fadeInUp 1s ease-out 0.2s backwards;
}

/* Enhanced Card Grid */
.row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  padding: 0 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.project-card {
  animation: fadeInUp 0.6s ease-out backwards;
}

.project-card:nth-child(1) {
  animation-delay: 0.1s;
}

.project-card:nth-child(2) {
  animation-delay: 0.2s;
}

.project-card:nth-child(3) {
  animation-delay: 0.3s;
}

.project-card:nth-child(4) {
  animation-delay: 0.4s;
}

.project-card:nth-child(5) {
  animation-delay: 0.5s;
}

.project-card:nth-child(6) {
  animation-delay: 0.6s;
}

/* Premium Card Design */
.project-card .card {
  position: relative;
  background: linear-gradient(135deg,
      rgba(59, 130, 246, 0.12) 0%,
      rgba(139, 92, 246, 0.08) 50%,
      rgba(30, 41, 59, 0.95) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: 20px;
  overflow: hidden;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow:
    0 10px 40px rgba(0, 0, 0, 0.3),
    0 2px 8px rgba(59, 130, 246, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.project-card .card::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 0.5s;
}

.project-card .card:hover::before {
  left: 100%;
}

.project-card .card:hover {
  transform: translateY(-12px) scale(1.02);
  border-color: rgba(139, 92, 246, 0.6);
  background: linear-gradient(135deg,
      rgba(59, 130, 246, 0.18) 0%,
      rgba(139, 92, 246, 0.14) 50%,
      rgba(30, 41, 59, 0.98) 100%);
  box-shadow:
    0 25px 70px rgba(59, 130, 246, 0.35),
    0 0 50px rgba(139, 92, 246, 0.25),
    0 4px 20px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

/* Card Image */
.project-card .card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-card .card:hover img {
  transform: scale(1.08);
}

/* Card Body */
.card-body {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 280px;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.4;
  margin: 0;
  background: linear-gradient(135deg, #fff 0%, #e2e8f0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: all 0.3s ease;
}

.project-card .card:hover .card-title {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transform: translateX(4px);
}

.card-text {
  color: hsl(240, 10%, 70%);
  font-size: 0.95rem;
  line-height: 1.7;
  flex-grow: 1;
}

/* Button Styling */
.btn-wrap {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
}

.btn.btn-outline-light,
.btn.btn-primary {
  padding: 0.625rem 1.25rem;
  border-radius: 10px;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid;
  position: relative;
  overflow: hidden;
}

.btn.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.btn.btn-outline-light::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.1);
  transition: width 0.3s ease;
  z-index: -1;
}

.btn.btn-outline-light:hover {
  border-color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
}

.btn.btn-outline-light:hover::before {
  width: 100%;
}

.btn.btn-primary {
  background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
}

.btn.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
}

.btn.btn-primary:hover::before {
  opacity: 1;
}

/* Responsive Design */
@media (min-width: 768px) {
  .row {
    gap: 2.5rem;
  }

  .project-section {
    padding: 120px 0;
  }

  .lead-note {
    font-size: 1.25rem;
  }
}

@media (min-width: 992px) {
  .row {
    grid-template-columns: repeat(3, 1fr);
  }

  .card-body {
    padding: 2rem;
  }
}

/* Enhanced Contact Section */
.contact-card {
  background: linear-gradient(135deg,
      rgba(30, 41, 59, 0.95) 0%,
      rgba(15, 23, 42, 0.95) 100%);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow:
    0 20px 60px rgba(0, 0, 0, 0.3),
    0 0 40px rgba(59, 130, 246, 0.1);
  transition: all 0.4s ease;
}

.contact-card:hover {
  border-color: rgba(59, 130, 246, 0.3);
  box-shadow:
    0 25px 70px rgba(0, 0, 0, 0.4),
    0 0 50px rgba(59, 130, 246, 0.2);
}

/* Enhanced Blog Section */
.blog-card {
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.blog-card:hover {
  transform: translateY(-8px);
}

.blog-card .card-banner {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.blog-card .card-banner::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg,
      rgba(59, 130, 246, 0.3),
      rgba(139, 92, 246, 0.3));
  opacity: 0;
  transition: opacity 0.4s ease;
}

.blog-card:hover .card-banner::after {
  opacity: 1;
}

/* Utility Classes */
.d-flex {
  display: flex;
}

.flex-column {
  flex-direction: column;
}

.gap-2 {
  gap: 0.5rem;
}

.mt-auto {
  margin-top: auto;
}

.h-100 {
  height: 100%;
}

.justify-content-center {
  justify-content: center;
}

.g-4 {
  gap: 1.5rem;
}

.col-12 {
  flex: 0 0 100%;
}

.col-md-6 {
  flex: 0 0 50%;
}

.col-lg-4 {
  flex: 0 0 33.333%;
}

/* Additional Enhancements */
.section {
  position: relative;
}

.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg,
      transparent,
      rgba(59, 130, 246, 0.5),
      transparent);
  border-radius: 2px;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

/* Selection Styling */
::selection {
  background: rgba(59, 130, 246, 0.3);
  color: #fff;
}

::-moz-selection {
  background: rgba(59, 130, 246, 0.3);
  color: #fff;
}