@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");

:root {
  --primary: #12bdff;
  --primary-hover: #0c8ec2;
  --dark-primary: #1b1f24;
  --accent: #12bdff;
  --card-bg: #22282f;
}

/* Primary button */
.btn-primary {
  background-color: var(--primary);
  color: #fff;
  font-weight: 600;
  border: none;
  text-decoration: none;
  transition: 0.3s;
}

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

/* Dark outlined button */
.btn-dark-outlined {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  transition: 0.3s;
}

.btn-dark-outlined:hover {
  background-color: var(--primary);
  color: #fff;
}

/* Ensure anchor links inside buttons inherit correct colors */
.btn a {
  color: inherit;
  text-decoration: none;
  font-weight: inherit;
}

.btn-dark-outlined a {
  color: inherit;
}

.btn-dark-outlined:hover a {
  color: #fff;
}


/* Social Icons — clean and modern outlined style */
ul.social-icons {
  display: flex;
  gap: 15px;
  list-style: none;       /* removes the bullet points */
  padding: 0;
  margin: 25px 0;
}

.social-icons li {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border: 2px solid var(--primary);
  border-radius: 50%;
  transition: 0.3s ease;
}

.social-icons li a {
  color: #fff;
  font-size: 20px;
  text-decoration: none;
}

.social-icons li:hover {
  background-color: var(--primary);
  transform: translateY(-2px);
}

.social-icons li:hover a {
  color: var(--dark-primary);
}


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

body {
  font-family: "Poppins", sans-serif;
  background-color: var(--dark-primary);
  color: #fff;
  line-height: 1.6;
}

/* Header */
header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: var(--dark-primary);
  padding: 20px 40px;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

header .logo {
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 2px;
}

header ul {
  display: flex;
  list-style: none;
}

header ul li {
  margin-left: 25px;
}

header ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: 0.3s;
}

header ul li a:hover {
  color: var(--primary);
}

/* Hero Section */
.hero-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 120px 10%;
  background-color: var(--dark-primary);
  color: #fff;
}

.hero-section__title {
  font-size: 48px;
  margin-bottom: 15px;
}

.hero-section__title span {
  color: var(--primary);
}

.hero-section__desc {
  color: #c4c4c4;
  max-width: 550px;
}

.hero-img img {
  border-radius: 15px;
  width: 420px; /* was 320px — increases visual presence */
  max-width: 100%;
  box-shadow: 0 0 35px rgba(18, 189, 255, 0.35);
  transition: transform 0.3s ease;
}

.hero-img img:hover {
  transform: scale(1.03);
}

/* Buttons */
.btn {
  padding: 10px 20px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: 0.3s;
}

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

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

.btn-dark-outlined {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}

.btn-dark-outlined:hover {
  background: var(--primary);
  color: #fff;
}

/* About Section */
.about-section {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 10%;
  background-color: #22282f;
  gap: 60px;
}

.about-img img {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 3px solid var(--primary);
  box-shadow: 0 0 25px rgba(18, 189, 255, 0.3);
  object-fit: cover;
}

.about-content h2 {
  font-size: 32px;
  margin-bottom: 10px;
}

.about-content span {
  color: var(--primary);
}

.about-content p {
  color: #d0d0d0;
  font-size: 15px;
}

/* === Qualification / Timeline Section === */
.qualification.section {
  text-align: center;
  padding: 60px 10%;
}

.section__title {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 5px;
}

.section__subtitle {
  display: block;
  font-size: 1rem;
  color: #c4c4c4;
  margin-bottom: 40px;
}

/* Timeline container */
.qualification__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* Add the vertical line */
.qualification__container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  height: 100%;
  background-color: var(--primary);
  opacity: 0.5;
  z-index: 0;
}

.qualification__data {
  display: grid;
  grid-template-columns: 1fr 2px 1fr; /* match the line’s width exactly */
  align-items: start;
  column-gap: 3rem;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

/* Make sure the middle column aligns visually with the global line */
.qualification__data > div:nth-of-type(2) {
  justify-self: center;
}



.qualification__data > div:first-of-type {text-align: right;}
.qualification__data > div:last-of-type {text-align: left;}


/* Dot and line styling */
.qualification__rounder {
  display: inline-block;
  width: 12px;
  height: 12px;
  background-color: var(--primary);
  border-radius: 50%;
  z-index: 2;
}

.qualification__line {
  display: block;
  width: 2px;
  height: 100%;
  background-color: var(--primary);
  opacity: 0.5;
  margin: 0 auto;
}

/* Typography */
.qualification__title {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}

.qualification__subtitle {
  font-size: 0.85rem;
  color: #aaa;
  display: block;
  margin: 2px 0;
}

.qualification__calendar {
  font-size: 0.8rem;
  color: #888;
  margin-top: 3px;
}



/* Projects Section */
.projects-section {
  background: var(--dark-primary);
  padding: 70px 10%;
}

.projects-section h2 {
  text-align: center;
  font-size: 28px;
}

.projects-section h2 span {
  color: var(--primary);
}

.projects-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 30px;
  gap: 20px;
}

.projects-card-box {
  background-color: #22282f;
  border-radius: 8px;
  padding: 25px;
  width: 30%;
  transition: 0.4s;
}

.projects-card-box:hover {
  box-shadow: 0 0 20px rgba(18, 189, 255, 0.3);
  transform: translateY(-5px);
}

.projects-card-box__icons i {
  font-size: 30px;
  border: 1px solid var(--primary);
  padding: 15px;
  border-radius: 50%;
}

.projects-card-box__desc h4 {
  margin: 15px 0 8px;
}

.projects-card-box__desc p {
  font-size: 14px;
  color: #c4c4c4;
}

.projects-card-box {
  text-align: center;              /* centers text */
  flex-direction: column;          /* stack icon, text, button */
  align-items: center;             /* center them horizontally */
}

.projects-card-box__icons i {
  margin-bottom: 12px;
}

.projects-card-box__desc {
  flex-grow: 1;                    /* allows text to take available space */
}

.projects-card-box__buttons {
  margin-top: 15px;
}


/* Contact Section */
.contact-section {
  background: #22282f;
  padding: 60px 10%;
  text-align: center;
}

.contact-section h2 {
  font-size: 28px;
  margin-bottom: 20px;
}

.contact-section h2 span {
  color: var(--primary);
}

.contact-section input,
.contact-section textarea {
  background-color: #c4c4c4;
  
  border: none;
  outline: none;
  padding: 8px 12px;
  width: 300px;
  border-radius: 5px;
  margin-bottom: 10px;
}

.contact-section input::placeholder,
.contact-section textarea::placeholder {
  color: #555; /* darker gray for readability */
  opacity: 1; /* ensures consistent placeholder visibility */
}

.contact__github {
  margin-top: 15px;
}

footer {
  text-align: center;
  background-color: var(--dark-primary);
  padding: 20px 0;
  color: gray;
  font-size: 14px;
}

footer a {
  color: var(--primary);
  text-decoration: none;
}

/* Resume Section */
.resume-section {
  background: #22282f;
  color: #fff;
  padding: 70px 10%;
  text-align: center;
}

.resume-section h2 {
  font-size: 28px;
  margin-bottom: 15px;
}

.resume-section h2 span {
  color: var(--primary);
}

.resume-intro {
  color: #c4c4c4;
  margin-bottom: 25px;
}

.resume-container {
  display: flex;
  justify-content: center;
  margin-bottom: 20px;
}

.resume-container iframe {
  width: 80%;
  height: 650px;
  border-radius: 8px;
  border: 1px solid var(--primary);
  box-shadow: 0 0 20px rgba(18, 189, 255, 0.2);
}

.resume-download a {
  color: var(--dark-primary);
  text-decoration: none;
  font-weight: 600;
}

.resume-download .btn {
  margin-top: 10px;
}
/* ===== Responsive Header Navigation ===== */

/* Desktop: show nav, hide hamburger */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 28px;
  color: var(--primary);
  cursor: pointer;
}

header nav ul {
  display: flex;
  list-style: none;
  gap: 25px;
}

/* ===== Mobile Navigation & Responsiveness ===== */

/* Tablet & small desktop adjustments */
@media (max-width: 768px) {
  /* Show hamburger, hide nav by default */
  .menu-toggle {
    display: block;
  }

  header nav ul {
    display: none;
    flex-direction: column;
    align-items: center;
    background-color: var(--dark-primary);
    width: 100%;
    position: absolute;
    top: 70px; /* adjust if your header height changes */
    left: 0;
    padding: 15px 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.4);
  }

  /* When header has 'active' class (menu open), show nav */
  header.active nav ul {
    display: flex;
  }

  header nav ul li {
    margin: 10px 0;
  }

  header nav ul li a {
    display: block;
    padding: 10px 0;
    width: 100%;
    text-align: center;
  }

  /* Logo color fix */
  header .logo,
  header .logo:visited,
  header .logo:active {
    color: var(--primary);
    text-decoration: none;
  }

  header .logo:hover {
    color: var(--primary-hover);
  }

  /* Center social icons */
  ul.social-icons {
    justify-content: center;
    width: 100%;
  }

  /* Hide entire timeline section on mobile */
  .qualification.section {
    display: none !important;
  }
}

/* Small phone optimizations */
@media (max-width: 480px) {
  body {
    font-size: 14px;
    line-height: 1.5;
    padding: 0 5%;
  }

  header {
    padding: 12px 20px;
  }

  .hero-section {
    flex-direction: column;
    text-align: center;
    padding: 100px 5% 60px;
  }

  .hero-section__title {
    font-size: 32px;
  }

  .hero-section__desc {
    font-size: 14px;
    margin: 0 auto 20px;
  }

  .hero-img img {
    width: 220px;
    margin-top: 20px;
  }

  .about-section {
    flex-direction: column;
    text-align: center;
    gap: 30px;
  }

  .about-img img {
    width: 180px;
    height: 180px;
  }

  /* Hide timeline entirely on phones too */
  .qualification.section {
    display: none !important;
  }

  .projects-card-box {
    width: 100%;
  }

  .resume-container iframe {
    width: 100%;
    height: 500px;
  }

  .contact-section input,
  .contact-section textarea {
    width: 90%;
  }
}

/* ===== Publications & Presentations Section ===== */
.publications-section {
  background-color: #22282f;
  color: #fff;
  padding: 70px 10%;
  text-align: left;
}

.publications-section h2 {
  color: var(--primary);
  font-size: 28px;
  margin: 40px 0 20px;
  position: relative;
}

.publications-section h2 span {
  border-left: 8px solid var(--primary);
  padding-left: 10px;
}

.publication,
.presentation {
  margin-bottom: 20px;
  line-height: 1.6;
}

.publication p,
.presentation p {
  color: #d0d0d0;
  font-size: 15px;
}

.publication a,
.presentation a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.publication a:hover,
.presentation a:hover {
  text-decoration: underline;
  color: var(--primary-hover);
}

/* Mobile adjustments */
@media (max-width: 768px) {
  .publications-section {
    padding: 50px 8%;
  }

  .publications-section h2 {
    font-size: 24px;
  }

  .publication p,
  .presentation p {
    font-size: 14px;
  }
}