/* =================================================================== */
/* FONT IMPORTS & CSS VARIABLES                                        */
/* =================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');
@import url('https://fonts.googleapis.com/css?family=Exo:400,700');

:root {
  --font-primary: "Poppins", sans-serif;
  --font-accent: "Exo", sans-serif;
  --color-text: #212529;
  --color-text-muted: #6c757d;
  --color-primary: #0056b3;
  --color-primary-dark: #004494;
  --color-accent: #007bff;
  --header-bg: rgba(255, 255, 255, 0.85);
  --footer-bg: #e9ecef;
  --background-main: #F8F9FA;
  --card-bg: rgba(255, 255, 255, 0.65);
  --card-border: 1px solid rgba(0, 0, 0, 0.1);
  --card-shadow: 0 4px 30px rgba(0, 0, 0, 0.08);
  --logo-filter: invert(1);
  --container-width: 1140px;
  --header-height: 80px;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --border-radius: 16px;
  --transition-speed: 0.3s;
  --card-blur: blur(12px);
}

body[data-theme='dark'] {
  --color-text: #e9ecef;
  --color-text-muted: #adb5bd;
  --color-primary: #4dabf7;
  --color-primary-dark: #339af0;
  --color-accent: #74c0fc;
  --header-bg: rgba(5, 15, 30, 0.9);
  --footer-bg: #0a192f;
  --background-main: #0a192f;
  --card-bg: rgba(33, 50, 84, 0.65);
  --card-border: 1px solid rgba(255, 255, 255, 0.1);
  --card-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
  --logo-filter: invert(0);
}

/* =================================================================== */
/* GLOBAL & BASE STYLES                                                */
/* =================================================================== */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, html {
  font-family: var(--font-primary);
  background-color: var(--background-main);
  line-height: 1.7;
  color: var(--color-text);
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}
body.modal-open, body.nav-open { overflow: hidden; }

/* =================================================================== */
/* ACCESSIBILITY & UTILITIES                                           */
/* =================================================================== */
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* =================================================================== */
/* HEADER & NAVIGATION                                                 */
/* =================================================================== */
header {
  width: 100%; position: fixed; top: 0; height: var(--header-height); z-index: 1000;
  transition: background-color var(--transition-speed) ease, 
              box-shadow var(--transition-speed) ease, 
              backdrop-filter var(--transition-speed) ease,
              transform 0.4s ease-out;
  background-color: var(--header-bg); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  backdrop-filter: var(--card-blur); -webkit-backdrop-filter: var(--card-blur);
}
header.is-hidden {
    transform: translateY(-100%);
}
nav {
  max-width: var(--container-width); height: 100%; margin: 0 auto;
  padding: 0 var(--spacing-lg); display: flex;
  justify-content: space-between; align-items: center;
}
.logo-main {
  max-height: 50px; transition: transform var(--transition-speed) ease;
  color: var(--color-text); display: block;
}
.nav-logo-link:hover .logo-main { transform: scale(1.1); }
.logo-external { filter: var(--logo-filter); }
.nav-desktop-controls { display: flex; align-items: center; gap: 1.5rem; }
.nav-social-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-social-links a, .theme-switcher { display: inline-flex; align-items: center; }
.logo-external { max-height: 24px; transition: transform var(--transition-speed) ease; }
.logo-external:hover { transform: scale(1.15); }
.nav-overlay-mobile {
  position: fixed; top: 0; left: 0; width: 100%; height: 100vh;
  background-color: var(--background-main); z-index: 999;
  display: flex; justify-content: center; align-items: center;
  opacity: 0; visibility: hidden;
  transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
}
.nav-overlay-mobile ul { list-style: none; text-align: center; }
.nav-overlay-mobile a {
  font-size: 2rem; color: var(--color-text); text-decoration: none;
  display: block; padding: 1rem;
  transition: transform 0.2s ease, color 0.2s ease;
}
.nav-overlay-mobile a.active-link {
    color: var(--color-primary);
    transform: scale(1.1);
}
.nav-overlay-mobile .nav-social-links { margin-top: 1rem; display: flex; justify-content: center; gap: 2rem; }
body.nav-open .nav-overlay-mobile { opacity: 1; visibility: visible; }
.nav-hamburger { display: none; background: transparent; border: none; cursor: pointer; z-index: 1001; padding: 10px; }
.nav-hamburger span {
  display: block; width: 25px; height: 3px; background-color: var(--color-text);
  margin: 5px 0; transition: all var(--transition-speed) ease;
}
body.nav-open .nav-hamburger span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
body.nav-open .nav-hamburger span:nth-child(2) { opacity: 0; }
body.nav-open .nav-hamburger span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.theme-switcher { background: none; border: none; cursor: pointer; width: 24px; height: 24px; padding: 0; position: relative; }
.theme-switcher .icon-sun, .theme-switcher .icon-moon {
  position: absolute; width: 100%; height: 100%;
  background-size: contain; background-repeat: no-repeat;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.icon-sun {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23212529' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='5'/%3E%3Cline x1='12' y1='1' x2='12' y2='3'/%3E%3Cline x1='12' y1='21' x2='12' y2='23'/%3E%3Cline x1='4.22' y1='4.22' x2='5.64' y2='5.64'/%3E%3Cline x1='18.36' y1='18.36' x2='19.78' y2='19.78'/%3E%3Cline x1='1' y1='12' x2='3' y2='12'/%3E%3Cline x1='21' y1='12' x2='23' y2='12'/%3E%3Cline x1='4.22' y1='19.78' x2='5.64' y2='18.36'/%3E%3Cline x1='18.36' y1='5.64' x2='19.78' y2='4.22'/%3E%3C/svg%3E");
  opacity: 1; transform: scale(1) rotate(0deg);
}
.icon-moon {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23212529' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
  opacity: 0; transform: scale(0) rotate(-90deg);
}
body[data-theme='dark'] .icon-sun { opacity: 0; transform: scale(0) rotate(90deg); }
body[data-theme='dark'] .icon-moon {
  opacity: 1; transform: scale(1) rotate(0deg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23e9ecef' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 12.79A9 9 0 1 1 11.21 3 7 7 0 0 0 21 12.79z'/%3E%3C/svg%3E");
}
.dot-nav {
  position: fixed; top: 50%; right: 25px; transform: translateY(-50%); z-index: 998;
}
.dot-nav ul { list-style: none; display: flex; flex-direction: column; gap: 1.25rem; align-items: flex-end; }
.dot-nav li { display: flex; align-items: center; flex-direction: row-reverse; }
.dot-nav a {
  display: block; width: 12px; height: 12px;
  background-color: rgba(0, 0, 0, 0.2); border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.3); transition: all var(--transition-speed) ease;
}
.dot-nav li.active a {
  background-color: var(--color-primary); transform: scale(1.5);
  border: 1px solid var(--color-primary-dark);
}
body[data-theme='dark'] .dot-nav a {
  background-color: rgba(255, 255, 255, 0.2); border: 1px solid rgba(255, 255, 255, 0.3);
}
body[data-theme='dark'] .dot-nav li.active a {
  background-color: var(--color-primary); border-color: var(--color-accent);
}
.dot-label {
  color: var(--color-text); font-weight: 600; margin-right: 12px;
  opacity: 0; visibility: hidden; transform: translateX(10px);
  transition: all var(--transition-speed) ease; text-shadow: 0 0 5px var(--background-main);
}
.dot-nav li.active .dot-label,
.dot-nav li:hover .dot-label {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}
.mainBodyContainer { 
  max-width: var(--container-width); margin: 0 auto; 
  padding: calc(var(--header-height) + var(--spacing-lg)) var(--spacing-lg) var(--spacing-lg); 
  display: flex; flex-direction: column; gap: var(--spacing-lg);
}
.section { padding: var(--spacing-lg); }
.section h2 { font-size: 2.5rem; margin-bottom: var(--spacing-lg); text-align: center; color: var(--color-primary); }
#intro { 
  text-align: center; padding-top: 5rem; padding-bottom: 5rem;
  transition: all var(--transition-speed) ease;
}
#intro h1 { 
  font-size: 3rem; margin-bottom: 0.5rem; cursor: pointer;
  transition: transform var(--transition-speed) ease;
}
#intro.state-default h1 { transform: scale(1.2); color: var(--color-primary); }
#intro .professional-title { font-size: 1.25rem; color: var(--color-text-muted); margin-bottom: 1.5rem; font-weight: 400; }
.professional-title .title-part {
  background: none; border: none; padding: 0; font-family: inherit; font-size: inherit;
  color: inherit; cursor: pointer; text-align: inherit; margin: 0 0.5em;
  transition: color 0.3s ease, transform 0.3s ease, opacity 0.3s ease, font-weight 0.3s ease;
}
.professional-title .title-part.active { font-weight: 700; transform: scale(1.2); color: var(--color-primary); }
#intro:not(.state-default) .professional-title .title-part:not(.active) { opacity: 0.6; }
.professional-title .title-part:hover:not(.active) { color: var(--color-primary); transform: scale(1.05); }
.professional-title .title-part:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: 4px; }
.summary-text-container { display: grid; max-width: 800px; margin: 0 auto; }
.summary-text { grid-area: 1 / 1; font-size: 1.1rem; opacity: 0; transition: opacity 0.7s ease-in-out; }
.summary-text.active { opacity: 1; }
#skills { padding-top: 4rem; padding-bottom: 4rem; }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2.5rem; }
.skill-category h3 {
  margin-bottom: 1rem; color: var(--color-primary);
  border-bottom: 2px solid var(--color-accent); padding-bottom: 0.5rem;
}
.skill-category ul { list-style-type: none; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.skill-category li {
  background-color: transparent; padding: 5px 12px; border-radius: 6px;
  font-size: 0.9rem; font-weight: 500; border: 1px solid var(--card-border);
  transition: 0.2s ease-out; cursor: pointer;
}
.skill-category li.skill-hover {
  background-color: var(--color-primary); color: #fff;
  transform: scale(1.1); border-color: var(--color-primary-dark);
}
body[data-theme='dark'] .skill-category li.skill-hover { color: var(--background-main); }
.skill-category li.skill-fading { animation: fade-out-skill 2s ease-out forwards; }
body[data-theme='dark'] .skill-category li.skill-fading { animation-name: fade-out-skill-dark; }
.experience-timeline { display: flex; flex-direction: column; gap: 2rem; }
.experience-item { position: relative; padding-left: 2rem; border-left: 3px solid var(--color-primary); }
.experience-item::before {
    content: ''; position: absolute; left: -11px; top: 0; width: 20px; height: 20px;
    border-radius: 50%; background-color: var(--background-main); border: 4px solid var(--color-primary);
}
.experience-item h3 { margin: 0; font-size: 1.5rem; }
.experience-details { color: var(--color-text-muted); font-style: italic; margin-bottom: 1rem; }
.experience-item ul { padding-left: 20px; }
.experience-item ul li { margin-bottom: 0.5rem; }
.certifications-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: var(--spacing-lg);
}
.certification-card {
    display: flex; align-items: center; gap: var(--spacing-lg); background: var(--card-bg);
    padding: var(--spacing-lg); border-radius: var(--border-radius); border: var(--card-border);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    cursor: pointer;
}
.certification-card:hover { transform: translateY(-5px); box-shadow: 0 6px 35px rgba(0, 0, 0, 0.1); }
.cert-logo {
    width: 80px; height: 80px; object-fit: contain; flex-shrink: 0;
    background-color: #ffffff; border-radius: 12px; padding: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}
.cert-details { display: flex; flex-direction: column; align-items: flex-start; }
.cert-details h3 { font-size: 1.2rem; margin-bottom: 0.25rem; color: var(--color-text); }
.cert-details .cert-issuer { font-size: 0.95rem; color: var(--color-text-muted); margin-bottom: 0; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--spacing-lg); }
.blog-card {
    background: var(--card-bg); border-radius: var(--border-radius); border: var(--card-border);
    box-shadow: var(--card-shadow); overflow: hidden; display: flex; flex-direction: column;
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}
.blog-card:hover { transform: translateY(-8px); box-shadow: 0 8px 40px rgba(0, 0, 0, 0.12); }
.blog-card-img { width: 100%; height: 200px; object-fit: cover; }
.blog-card-content { padding: var(--spacing-lg); display: flex; flex-direction: column; flex-grow: 1; }
.blog-card-content h3 { margin-bottom: 1rem; color: var(--color-primary); }
.blog-card-content p { flex-grow: 1; margin-bottom: 1.5rem; }
.glassFrameContainer {
  background: var(--card-bg); border-radius: var(--border-radius); box-shadow: var(--card-shadow);
  backdrop-filter: var(--card-blur); -webkit-backdrop-filter: var(--card-blur);
  border: var(--card-border);
}
.showcase-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--spacing-lg); }
.project-card { display: flex; flex-direction: column; align-items: center; text-align: center; padding: var(--spacing-lg); }
.project-card .basicImg { width: 100%; height: auto; border-radius: 8px; margin-bottom: var(--spacing-md); }
.project-card p { flex-grow: 1; margin-bottom: var(--spacing-lg); }
.project-card--coming-soon {
    justify-content: center; align-items: center; border-style: dashed;
    border-width: 2px; opacity: 0.8;
}
.project-card--coming-soon h3 { font-size: 1.5rem; color: var(--color-text-muted); }
.project-card--coming-soon p { flex-grow: 0; color: var(--color-text-muted); }
.project-embed {
    width: 100%; aspect-ratio: 16 / 9; margin-bottom: var(--spacing-md);
    border-radius: 8px; overflow: hidden; background-color: #000;
}
.project-embed iframe,
.project-embed video { width: 100%; height: 100%; border: none; object-fit: cover; }
.button {
    display: inline-block; padding: 10px 20px; background-color: var(--color-primary);
    color: #fff; text-decoration: none; border-radius: 8px; font-weight: 600;
    transition: background-color var(--transition-speed) ease, transform var(--transition-speed) ease;
    border: none; cursor: pointer; font-family: inherit; align-self: flex-start;
}
.project-card .button { align-self: center; }
.button:hover { background-color: var(--color-primary-dark); transform: scale(1.05); }
body[data-theme='dark'] .button { color: var(--background-main); }
footer {
  width: 100%; background-color: var(--header-bg); backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur); text-align: center;
  padding: 3rem var(--spacing-lg) 2rem; border-top: 1px solid var(--card-border);
}
.footer-content { max-width: 700px; margin: 0 auto 2.5rem auto; }
.footer-content p { margin-bottom: 1.5rem; font-size: 1.1rem; }
.footer-content .button { align-self: center; }
.copyright { color: var(--color-text-muted); font-size: 0.9rem; }
.back-to-top {
  position: fixed; bottom: 30px; right: 30px; width: 50px; height: 50px;
  background-color: var(--color-primary); color: white; border-radius: 50%;
  font-size: 24px; opacity: 0; visibility: hidden; z-index: 500;
  transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
  display: flex; justify-content: center; align-items: center;
  border: none; cursor: pointer; font-family: inherit;
}
.back-to-top.visible { opacity: 1; visibility: visible; }
.back-to-top:hover { background-color: var(--color-primary-dark); transform: scale(1.1); }
.section.glassFrameContainer {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.section.glassFrameContainer.is-in-view {
    opacity: 1;
    transform: translateY(0);
}
@keyframes fade-out-skill {
  from {
    background-color: var(--color-primary); color: #fff;
    transform: scale(1.1); border-color: var(--color-primary-dark);
  }
  to {
    background-color: transparent; color: var(--color-text);
    transform: scale(1); border-color: var(--card-border);
  }
}
@keyframes fade-out-skill-dark {
  from {
    background-color: var(--color-primary); color: var(--background-main);
    transform: scale(1.1); border-color: var(--color-primary-dark);
  }
  to {
    background-color: transparent; color: var(--color-text);
    transform: scale(1); border-color: var(--card-border);
  }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important; animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important; scroll-behavior: auto !important;
  }
  .section.glassFrameContainer { opacity: 1; transform: none; }
}
.modal-overlay {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  background-color: rgba(0, 0, 0, 0.6); display: flex; justify-content: center;
  align-items: center; z-index: 2000; opacity: 0; visibility: hidden;
  transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
  backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px);
}
.modal-overlay.visible { opacity: 1; visibility: visible; }
.modal-content {
  position: relative; padding: var(--spacing-lg); max-width: 650px; 
  width: 90%; max-height: 90vh; overflow-y: auto; 
  transform: scale(0.95); transition: transform var(--transition-speed) ease;
}
.modal-overlay.visible .modal-content { transform: scale(1); }
.modal-close {
  position: absolute; top: 15px; right: 15px; background: none; border: none;
  cursor: pointer; opacity: 0.7; color: var(--color-text); padding: 5px;
  line-height: 1; transition: opacity 0.2s ease, transform 0.2s ease;
}
.modal-close:hover { opacity: 1; transform: scale(1.1); }
.modal-body { display: flex; flex-direction: column; align-items: center; text-align: center; }
#modal-cert-img {
    height: 450px; width: auto; max-width: 100%; object-fit: contain;
    margin-bottom: var(--spacing-lg); border-radius: var(--border-radius);
    background-color: #fff; padding: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.modal-details { display: flex; flex-direction: column; align-items: center; }
.modal-details h3 { margin-bottom: 0.5rem; font-size: 1.5rem; }
.modal-details p { color: var(--color-text-muted); margin-bottom: 1.5rem; }

/* =================================================================== */
/* UNDER CONSTRUCTION OVERLAY (REUSABLE)                               */
/* =================================================================== */

/* Make the section a positioning container for the overlay */
.is-under-construction {
  position: relative;
  min-height: 400px; 
}

/* Blur the main content div within the section and make it unclickable */
.is-under-construction > div {
  filter: blur(8px);
  -webkit-filter: blur(8px);
  pointer-events: none;
  user-select: none;
}

/* Create the message using a data attribute for custom text */
.is-under-construction::after {
  content: attr(data-overlay-text); 
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;

  /* Styling for the message badge */
  background: var(--card-bg);
  color: var(--color-primary);
  padding: 1rem 2rem;
  border-radius: var(--border-radius);
  border: var(--card-border);
  box-shadow: var(--card-shadow);
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  white-space: nowrap;
}

@media (max-width: 992px) { .dot-nav { display: none; } }
@media (max-width: 768px) {
  .nav-desktop-controls { display: none; }
  .nav-hamburger { display: block; }
  .mainBodyContainer { 
    padding-top: calc(var(--header-height) + var(--spacing-md)); 
    padding-left: var(--spacing-md); padding-right: var(--spacing-md); 
  }
  .section h2 { font-size: 2rem; }
  #intro h1 { font-size: 2.5rem; }
}
@media (max-width: 480px) {
  #intro h1 { font-size: 2rem; }
  .professional-title { font-size: 1.1rem; }
  .section h2 { font-size: 1.8rem; }
  .certifications-grid { grid-template-columns: 1fr; }
}