/* ===== Accessibility utility class for form labels (SUGGESTION) ===== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Base Styles */
:root {
  --primary-color: #ffc400; /* Accent Color */
  --secondary-color: #fff;
  --dark-color: #040404;
  --body-font: 'Outfit', sans-serif;
}
body {
  font-family: var(--body-font);
  background-color: var(--dark-color);
  color: var(--secondary-color);
  margin: 0;
  padding: 0;
}
p {
  text-align: justify;
}
li {
  text-align: justify;
}
a { color: var(--primary-color); text-decoration: none; }
a:hover { color: #ffd54f; text-decoration: none; }
h1, h2, h3, h4, h5, h6 { font-family: var(--body-font); }

/* ===== START: Earth and Moon Preloader CSS ===== */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--dark-color);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease-out;
}
#preloader.loaded {
  opacity: 0;
  visibility: hidden;
}
.preloader-container {
  position: relative;
  width: 120px;
  height: 120px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.earth {
  position: absolute;
  width: 40px;
  height: 40px;
  background: radial-gradient(circle, #87CEEB, #2c729c);
  border-radius: 50%;
  box-shadow: 0 0 20px rgba(135, 206, 235, 0.7), inset 0 0 10px rgba(0,0,0,0.3);
}
.moon-orbit {
  position: absolute;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  animation: orbit-spin 4s linear infinite;
}
.moon {
  position: absolute;
  top: -6px;
  left: 44px;
  width: 12px;
  height: 12px;
  background: #f0f0f0;
  border-radius: 50%;
  box-shadow: 0 0 10px #ffffff;
}
@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
/* ===== END: Preloader CSS ===== */

/* Top Navigation (for tabs) */
#top-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem 0;
  background: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #222;
}
#top-nav .nav-links { list-style: none; padding: 0; margin: 0 3rem 0 auto; display: flex; gap: 1.5rem; }

/* ===== START: NEW TOP-NAV UNDERLINE STYLES ===== */
#top-nav .nav-links a {
  color: #ccc;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  padding-bottom: 5px;
  transition: color 0.3s ease-in-out;
}
#top-nav .nav-links a:hover,
#top-nav .nav-links a.active {
  color: var(--primary-color);
}
#top-nav .nav-links a::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  left: 0;
  bottom: 0;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease-in-out;
}
#top-nav .nav-links a:hover::after,
#top-nav .nav-links a.active::after {
  transform: scaleX(1);
}
/* ===== END: NEW TOP-NAV UNDERLINE STYLES ===== */

.my-name {
  font-size: 1.8rem; font-weight: 600; color: #fff; cursor: pointer;
  transition: color 0.3s; margin-left: 5%;
}
.my-name:hover { color: var(--primary-color); }

/* Header (Home Page) */
#header {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  overflow: hidden;
  background-color: #040918;
  background-image: url('https://github.com/KBhardwaj-007/KBhardwaj-007.github.io/blob/main/images/Home_background.jpg?raw=true');
  background-size: cover;
  background-position: center center;
}
.header-content { padding-left: 5%; position: relative; z-index: 2; }
.header-content p { font-size: 1.5rem; text-align: left;}
#header h1 { font-size: 64px; margin: 0; padding: 0; line-height: 1; font-weight: 700; }
#header h1 .im { color: rgba(255, 255, 255, 0.7); }
#header h1 .name {
  background: linear-gradient(to right, #c33764, #9f4298);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
#header h2 { color: #fff; margin-top: 20px; font-size: 24px; }
#header .navbar { margin-top: 30px; }
#header .navbar ul { padding: 0; list-style: none; display: flex; gap: 25px; }
#header .navbar a {
  color: #fff;
  font-weight: 500;
  padding-bottom: 5px;
  position: relative;
  cursor: pointer;
  transition: color 0.3s ease-in-out;
  font-size: 1.1rem;
}
#header .navbar a:hover,
#header .navbar a.active {
  color: var(--primary-color);
}
#header .navbar a::after {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: var(--primary-color);
  left: 0;
  bottom: 0;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease-in-out;
}
#header .navbar a:hover::after,
#header .navbar a.active::after {
  transform: scaleX(1);
}
#header .social-links { margin-top: 40px; display: flex; align-items: center; gap: 15px; }
#header .social-links a {
  font-size: 18px; display: flex; justify-content: center; align-items: center;
  background: rgba(255, 255, 255, 0.1); color: #fff; line-height: 1;
  border-radius: 50%; width: 40px; height: 40px; transition: 0.3s;
}
#header .social-links a:hover { background: var(--primary-color); }

/* General Section Styling */
.page-section {
  position: relative;
  padding: 50px 5% 60px 5%;
  display: none;
  min-height: 100vh;
  background-size: cover;
  background-position: center center;
  background-attachment: fixed;
  animation: fadeIn 0.5s ease-in-out;
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- START: UPDATED & UNIFIED SECTION TITLE STYLES --- */
.section-title h2 {
  font-size: 1rem;
  font-weight: 500;
  color: #ccc;
  text-transform: uppercase;
  margin-bottom: 0;
  position: relative;
  padding-bottom: 0;
  display: inline-block;
}

#about .section-title p,
#resume .section-title p,
#contact .section-title p {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: normal;
  margin-bottom: 20px;
}

/* --- START: RESTORED TITLE LINE --- */
.about-me > .section-title > h2::after,
#about .section-title.v2-title > h2::after,
#resume .section-title.v2-title > h2::after,
#contact .section-title.v2-title > h2::after {
  content: '';
  position: absolute;
  display: block;
  width: 120px;
  height: 2px;
  background: var(--primary-color);
  top: 50%;
  left: calc(100% + 20px);
  transform: translateY(-50%);
}
/* --- END: RESTORED TITLE LINE --- */

.section-title p {
  margin-bottom: 0;
  text-align: left;
}

.page-section::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(4, 4, 4, 0.75); z-index: 1;
}
.page-section > * { position: relative; z-index: 2; }

/* Section Backgrounds with Fallbacks */
#about {
  background-color: #1a1a2e;
  background-image: url('https://github.com/KBhardwaj-007/KBhardwaj-007.github.io/blob/main/images/about_background.jpeg?raw=true');
}
#resume {
  background-color: #0d021a;
  background-image: url('https://github.com/KBhardwaj-007/KBhardwaj-007.github.io/blob/main/images/Resume_background.jpeg?raw=true');
}
#contact {
  background-color: #0b1a2e;
  background-image: url('https://github.com/KBhardwaj-007/KBhardwaj-007.github.io/blob/main/images/Contact_background.jpeg?raw=true');
}

/* About Section Specifics */
.profile-photo {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    border: 6px solid var(--primary-color);
    object-fit: cover;
    box-shadow: 0 0 25px rgba(255, 196, 0, 0.5);
}
.about-me .content h3 { font-weight: 700; font-size: 26px; color: var(--primary-color); }
.gradient-text {
  background: linear-gradient(90deg, var(--primary-color), #fff);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; font-weight: bold;
}

/* Skills Section */
.skills .progress {
  height: 60px;
  display: block;
  background: none;
  border-radius: 0;
}
.skills .progress .skill {
  padding: 0;
  margin: 0 0 6px 0;
  text-transform: uppercase;
  display: block;
  font-weight: 600;
  font-family: var(--body-font);
  color: #fff;
}
.skills .progress .skill .val {
  float: right;
  font-style: normal;
}
.skills .progress-bar-wrap {
  background: rgba(255, 255, 255, 0.2);
  height: 10px;
  border-radius: 5px;
}
.skills .progress-bar {
  width: 1px;
  height: 10px;
  transition: width 0.9s ease-in-out;
  background-color: var(--primary-color);
  border-radius: 5px;
}

/* Tech Interests Section Styling */
.tech .tech-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-top: 30px;
}
.tech-item {
    flex-basis: 130px;
    height: 50px;
    padding: 0 10px;
    background: #1a1a1e;
    border: 1px solid #333;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: #ccc;
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease-in-out;
    cursor: pointer;
    will-change: transform, box-shadow;
}
.tech-item img {
    width: 20px;
    height: 20px;
}
.tech-item:hover {
    transform: translateY(-4px) scale(1.03);
    color: #fff;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(255, 196, 0, 0.5);
}
.tech-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 250px;
    height: 250px;
    background-image: radial-gradient(circle, rgba(255,196,0,0.5) 0%, rgba(156,39,176,0.3) 40%, rgba(4,4,4,0) 70%);
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    transition: transform 0.5s ease-out, opacity 0.5s ease-out;
    border-radius: 50%;
}
.tech-item:hover::before {
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
}

/* Interests Section Styling */
.interests .icon-box {
  display: flex;
  align-items: center;
  padding: 20px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid transparent;
  border-radius: 8px;
  transition: all 0.3s ease-in-out;
  will-change: transform, box-shadow, border-color;
}
.interests .icon-box i {
  font-size: 32px;
  padding-right: 10px;
  line-height: 1;
  color: var(--interest-color);
  transition: transform 0.3s ease-in-out;
}
.interests .icon-box h3 {
  font-weight: 700;
  margin: 0;
  padding: 0;
  line-height: 1;
  font-size: 16px;
}
.interests .icon-box:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--interest-color);
  transform: translateY(-5px);
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2), 0 0 20px var(--interest-color);
}
.interests .icon-box:hover i {
  transform: scale(1.2) rotate(10deg);
}

/* Resume Section */
.resume .resume-title { font-size: 26px; font-weight: 700; margin-top: 20px; margin-bottom: 20px; color: #fff; }
.resume .resume-item {
  padding: 0 0 20px 20px; margin-top: -2px; border-left: 2px solid rgba(255, 255, 255, 0.2); position: relative;
}
.resume .resume-item .location-item { list-style: none; position: relative; }
.resume .resume-item .location-item::before {
  content: '\f3e9';
  font-family: 'bootstrap-icons';
  position: absolute;
  left: -20px;
  top: 2px;
  color: var(--primary-color);
}
.resume .resume-item h4 {
  line-height: 18px; font-size: 18px; font-weight: 600; text-transform: uppercase;
  color: var(--primary-color); margin-bottom: 10px;
}
.resume .resume-item h4 a {
  font-size: 16px;
  vertical-align: middle;
  margin-left: 10px;
  color: var(--primary-color);
  transition: color 0.3s;
}
.resume .resume-item h4 a:hover { color: #fff; }
.resume .resume-item h5 {
  font-size: 16px; background: rgba(255, 255, 255, 0.15); padding: 5px 15px;
  display: inline-block; font-weight: 600; margin-bottom: 10px;
  border-radius: 50px;
}
.resume .resume-item::before {
  content: ""; position: absolute; width: 16px; height: 16px; border-radius: 50px;
  left: -9px; top: 0; background: var(--primary-color); border: 2px solid var(--primary-color);
}

/* CTA Button Animation */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--primary-color);
  color: #000;
  padding: 12px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.4s ease-in-out;
  position: relative;
  overflow: hidden;
  border: 2px solid transparent;
}
.cta-button span { transition: transform 0.3s ease-in-out; }
.cta-button i { font-size: 1.2rem; transition: transform 0.3s ease-in-out; }
.cta-button:hover {
  background: #ffc400;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2), 0 0 25px rgba(255, 196, 0, 0.6);
  border-color: #ffd54f;
  color: #000;
}
.cta-button:hover i { transform: translateY(-4px); }
.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 75%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.6s ease-in-out;
  transform: skewX(-25deg);
}
.cta-button:hover::before { left: 150%; }

/* Contact Section */
.contact .info-box {
  color: #fff; padding: 20px; width: 100%; background: rgba(255, 255, 255, 0.08);
  border-radius: 8px; height: 100%;
}
.contact .info-box i.bx {
  font-size: 24px; color: var(--primary-color); border-radius: 50%; padding: 14px;
  float: left; background: rgba(255, 255, 255, 0.1);
}
.contact .info-box h3 { font-size: 20px; color: #fff; font-weight: 700; margin: 10px 0 10px 68px; }
.contact .info-box p { padding: 0; color: #ccc; line-height: 24px; font-size: 14px; margin: 0 0 0 68px; text-align: left;}
.contact .php-email-form { padding: 30px; background: rgba(255, 255, 255, 0.08); border-radius: 8px; }
.contact .php-email-form input, .contact .php-email-form textarea {
  background: rgba(0, 0, 0, 0.3); border: 1px solid #333; padding: 10px;
  color: #fff; width: 100%; border-radius: 5px;
}
.contact .php-email-form input::placeholder,
.contact .php-email-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.7);
  opacity: 1;
}
.contact .php-email-form button[type="submit"] {
  position: relative;
  overflow: hidden;
  padding: 12px 30px;
  font-weight: 600;
  font-size: 16px;
  color: #fff;
  background: linear-gradient(45deg, #0c0c1e, #1a1a3a, #2a2a5f, #3c1a5b, #0c0c1e);
  background-size: 400% 400%;
  border: 1px solid rgba(173, 136, 255, 0.5);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.5s ease-in-out;
  animation: galaxy-shimmer 20s linear infinite;
  z-index: 1;
}
@keyframes galaxy-shimmer {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.contact .php-email-form button[type="submit"]:hover {
  border-color: #ad88ff;
  box-shadow: 0 0 15px #ad88ff, 0 0 25px #ad88ff, inset 0 0 5px rgba(255, 255, 255, 0.2);
  animation-duration: 10s;
}
.contact .php-email-form button[type="submit"]:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  animation: none;
  box-shadow: none;
}
.contact .php-email-form button[type="submit"]::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 20px;
  height: 300%;
  background: linear-gradient(to bottom, transparent 0%, rgba(255,255,255,0.8) 50%, transparent 100%);
  transform: rotate(45deg) translateX(-500%);
  transition: transform 1s ease-in-out;
  z-index: 2;
  opacity: 0.8;
}
.contact .php-email-form button[type="submit"]:hover:not(:disabled)::before {
  transform: rotate(45deg) translateX(500%);
}
.contact .contact-container { display: flex; flex-wrap: wrap; gap: 30px; }
.contact .contact-message,
.contact .php-email-form { flex: 1; min-width: 300px; }
.contact .contact-message {
  background: rgba(255, 255, 255, 0.08);
  padding: 30px;
  border-radius: 8px;
  color: #ccc;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.contact .contact-message h2 {
  font-size: 40px;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 15px;
}
.contact .contact-message p { line-height: 1.6; font-size: 15px; text-align: left; }
.contact .contact-message p:last-child { margin-bottom: 0; }

/* Copyright Footer */
.copyright {
  text-align: center;
  padding-top: 30px;
  margin-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #ccc;
  font-size: 14px;
}
.copyright strong { color: var(--primary-color); }

/* Typed.js Cursor */
.typed-cursor { opacity: 1; animation: typedjsBlink 0.7s infinite; }
@keyframes typedjsBlink { 50% { opacity: 0.0; } }

/* Media Queries */
@media (max-width: 992px) {
  #header, .page-section { background-attachment: scroll; }
  #top-nav .nav-links { margin-right: 2rem; gap: 1rem; }
  .my-name { margin-left: 2%; }
}
@media (max-width: 768px) {
  #header h1 { font-size: 48px; }
  #header h2 { font-size: 20px; }
  #header .navbar ul { gap: 15px; }
  .about-me > .section-title > h2::after,
  #about .section-title.v2-title > h2::after,
  #resume .section-title.v2-title > h2::after,
  #contact .section-title.v2-title > h2::after {
    width: 80px; left: calc(100% + 15px);
  }
  .profile-photo { width: 200px; height: 200px; }
  .about-me .content { text-align: center; }
  .about-me .content p { text-align: justify; }
  .skills .col-lg-6 { margin-bottom: 20px; }
  .contact .contact-container { flex-direction: column; }
  #top-nav { flex-direction: column; padding: 0.5rem 0; }
  #top-nav .nav-links { margin: 0.5rem 0 0 0; }
}
@media (max-width: 576px) {
  body { font-size: 14px; }
  #header { text-align: center; }
  .header-content { padding: 0 5%; }
  .header-content p { text-align: center; }
  #header .navbar ul { justify-content: center; flex-wrap: wrap; }
  #header .social-links { justify-content: center; }
  .section-title { text-align: center; }
  .section-title p { text-align: center; } /* ADDED THIS LINE */
  .about-me > .section-title > h2::after,
  #about .section-title.v2-title > h2::after,
  #resume .section-title.v2-title > h2::after,
  #contact .section-title.v2-title > h2::after { display: none; }
  .tech-item { flex-basis: 100px; }
  .interests .icon-box { justify-content: center; }
  .contact .info-box { text-align: center; }
  .contact .info-box i.bx { float: none; margin-bottom: 10px; }
  .contact .info-box h3, .contact .info-box p { margin-left: 0; }
  .contact .info-box p { text-align: center; }
}

/* ===== START: LeetCode Contribution Graph Styling ===== */
.contribution-graph-container {
  background: rgba(10,10,10,0.5);
  padding: 20px;
  border-radius: 8px;
  border: 1px solid #333;
  overflow-x: auto; /* Allow horizontal scrolling on small screens */
}
.graph-header {
  display: flex;
  justify-content: space-between;
  padding-left: 30px; /* Offset for weekday labels */
  margin-bottom: 5px;
  font-size: 0.8rem;
  color: #999;
}
.month-label {
  flex-basis: 0;
  flex-grow: 1;
}
.graph-body {
  display: flex;
}
.weekday-labels {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  font-size: 0.7rem;
  color: #999;
  padding-right: 10px;
}
.day-grid {
  display: grid;
  grid-template-rows: repeat(7, 1fr);
  grid-auto-flow: column;
  grid-auto-columns: min-content; /* Make columns only as wide as their content */
  gap: 3px;
}
.day-cell {
  width: 14px;
  height: 14px;
  background-color: #2d333b;
  border-radius: 3px;
  position: relative;
}
.day-cell:hover {
  border: 1px solid #fff;
}
.day-cell.color-level-0 { background-color: #2d333b; }
.day-cell.color-level-1 { background-color: #0e4429; }
.day-cell.color-level-2 { background-color: #006d32; }
.day-cell.color-level-3 { background-color: #26a641; }
.day-cell.color-level-4 { background-color: #39d353; }

.day-cell::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: #1a1a1e;
  color: #fff;
  padding: 6px 10px;
  border-radius: 4px;
  border: 1px solid #444;
  white-space: nowrap;
  font-size: 0.8rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s;
  z-index: 10;
}
.day-cell:hover::after {
  opacity: 1;
  visibility: visible;
}

.graph-footer {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 5px;
  margin-top: 15px;
  font-size: 0.8rem;
  color: #999;
}
.loading {
    font-size: 1.2em;
    text-align: center;
    color: var(--primary-color);
    padding: 20px;
}
/* ===== END: LeetCode Contribution Graph Styling ===== */