:root {
  --primary-grad: linear-gradient(to right, #f9d423, #ff4e50);
}

/*--- SCROLL PROGRESS BAR ---*/
#scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(to right, #f9d423, #ff4e50);
  z-index: 99999;
  transition: width 0.1s linear;
  box-shadow: 0 0 8px rgba(249, 212, 35, 0.6), 0 0 16px rgba(255, 78, 80, 0.3);
}

* {
  margin: 0; padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body, html {
  min-height: 100%;
  background: linear-gradient(-45deg, #000428, #00294d, #13101c, #4a4464);
  background-size: 400% 400%;
  animation: smoothShift 25s ease infinite;
  color: #fff;
  overflow-x: hidden;
  position: relative;
}

/* Hide scrollbar completely */
::-webkit-scrollbar {
  display: none;
}
* {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

/*--- 1. FLUID BACKGROUND BLOBS (GPU ACCELERATED) ---*/
.fluid-background {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    overflow: hidden;
    z-index: -1;
    pointer-events: none;
}

.blob {
    position: absolute;
    filter: blur(80px);
    opacity: 0.4;
    border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%;
    /* Performance Optimization: */
    transform: translate3d(0,0,0);
    will-change: transform; 
    animation: moveBlob 20s infinite alternate ease-in-out;
}
.blob:nth-child(1) {
    top: -10%; left: -10%; width: 500px; height: 500px;
    background: rgba(255, 78, 80, 0.5);
    animation-delay: 0s;
}
.blob:nth-child(2) {
    bottom: -20%; right: -10%; width: 600px; height: 600px;
    background: rgba(41, 121, 255, 0.4);
    animation-delay: -5s;
    animation-duration: 25s;
}
.blob:nth-child(3) {
    top: 40%; left: 30%; width: 400px; height: 400px;
    background: rgba(249, 212, 35, 0.3);
    animation-delay: -10s;
    animation-duration: 18s;
}

@keyframes moveBlob {
    0% { transform: translate3d(0, 0, 0) rotate(0deg) scale(1); border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
    50% { transform: translate3d(100px, 50px, 0) rotate(90deg) scale(1.1); border-radius: 60% 40% 30% 70% / 50% 30% 50% 60%; }
    100% { transform: translate3d(-50px, 150px, 0) rotate(180deg) scale(0.9); border-radius: 30% 70% 50% 50% / 30% 40% 60% 70%; }
}

@keyframes smoothShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/*--- 2. LAYOUT & GLASS ---*/
.content-area-wrapper {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    padding: 0 20px;
    box-sizing: border-box;
}

.glass {
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(35px) saturate(120%);
  -webkit-backdrop-filter: blur(35px) saturate(120%);
  border-radius: 25px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(255, 255, 255, 0.05);
  padding: 35px 45px;
  position: relative;
  overflow: hidden; 
  
  /* MORPHING TRANSITION */
  transition: height 0.6s cubic-bezier(0.25, 1, 0.5, 1), transform 0.6s ease;
  will-change: height, transform;
}

.main-glass-panel {
    height: auto;
    margin-bottom: 50px;
    animation: fadeIn 0.8s ease-out 0.6s both, floaty 8s ease-in-out 1.4s infinite;
    transition: border-color 0.4s ease, box-shadow 0.4s ease, height 0.6s cubic-bezier(0.25, 1, 0.5, 1), transform 0.6s ease;
}

.main-glass-panel:hover {
    border-color: rgba(249, 212, 35, 0.35);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(255, 255, 255, 0.05), 0 0 40px rgba(249, 212, 35, 0.12), 0 0 80px rgba(255, 78, 80, 0.08);
}

@keyframes floaty {
    0%, 100% { transform: translateY(0px); box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3); }
    50% { transform: translateY(-8px); box-shadow: 0 15px 45px rgba(0, 0, 0, 0.2); }
}

/*--- 3. RIPPLE EFFECT ---*/
.ripple {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: rippleAnim 0.7s linear;
    background-color: rgba(255, 255, 255, 0.3);
    pointer-events: none;
}
@keyframes rippleAnim {
    to { transform: scale(4); opacity: 0; }
}

/*--- 4. HEADER & NAV ---*/
header {
  text-align: center;
  margin-top: 50px;
  margin-bottom: 40px;
  animation: slideDown 0.8s ease-out 0.1s both;
}

.header-inner {
  display: inline-flex;
  align-items: center;
  gap: 28px;
}

.header-text {
  display: flex;
  flex-direction: column;
  gap: 8px;
  text-align: left;
}

header h1 {
  font-size: 4em;
  background: var(--primary-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 10px 20px rgba(0,0,0,0.3);
  text-align: left;
}

.header-subtitle {
  font-size: 0.95em;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 400;
  letter-spacing: 0.02em;
  text-align: left;
}
.subtitle-sep {
  color: rgba(255,255,255,0.3);
}

.profile-pic {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 0 25px rgba(249, 212, 35, 0.3), 0 0 60px rgba(255, 78, 80, 0.15);
  flex-shrink: 0;
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
  animation: fadeIn 0.8s ease-out 0.4s both;
}

nav button {
  background: var(--primary-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: bold;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 15px;
  padding: 14px 28px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  font-size: 1.15em;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  z-index: 1;
  overflow: hidden;
}
nav button:hover, nav button.active {
  transform: translateY(-5px) scale(1.05);
  border-color: rgba(255, 215, 0, 0.5);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}
nav button.active {
    background: linear-gradient(to right, #f9d423, #ff4e50);
    -webkit-background-clip: border-box;
    -webkit-text-fill-color: black;
}
nav button.active::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%) scaleX(1);
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: #1a1a1a;
    animation: dotPop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
@keyframes dotPop {
    0% { transform: translateX(-50%) scale(0); }
    100% { transform: translateX(-50%) scale(1); }
}

/*--- 5. STACKED SECTIONS (For Morphing) ---*/
.sections-stack {
    display: grid;
    grid-template-areas: "stack";
}

.section {
  grid-area: stack; 
  opacity: 0;
  transform: scale(0.95);
  filter: blur(15px);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none; 
  line-height: 1.7;
  font-size: 1.15em;
  visibility: hidden; 
}

.section.active {
  opacity: 1;
  transform: scale(1);
  filter: blur(0);
  pointer-events: all;
  visibility: visible;
  transition-delay: 0.1s; 
}

.section h2 {
  font-size: 2.2em;
  margin-bottom: 20px;
  background: var(--primary-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 800;
}

footer {
  text-align: center;
  font-size: 1em;
  color: #c3f5ff;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 30px 0 50px 0;
  animation: fadeIn 0.8s ease-out 0.8s both;
}

footer a { color: #ffe98a; text-decoration: none; font-weight: 600; }

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0;
  margin-bottom: 16px;
}

.footer-links .social-icon {
  padding: 8px 16px;
  border-right: 1px solid rgba(255,255,255,0.15);
}

.footer-links .social-icon:last-child {
  border-right: none;
}

.social-icon {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  color: #ffe98a;
  transition: color 0.3s ease, transform 0.3s ease;
}
.social-icon:hover {
  color: #fff;
  transform: translateY(-3px);
}

@keyframes slideDown { from { transform: translateY(-50px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

#audio-control {
  position: fixed; bottom: 25px; right: 25px;
  bottom: calc(25px + env(safe-area-inset-bottom, 0px));
  background: linear-gradient(135deg, rgba(249, 212, 35, 0.15), rgba(255, 78, 80, 0.15));
  backdrop-filter: blur(15px);
  border-radius: 50%; width: 55px; height: 55px;
  border: 1px solid rgba(249, 212, 35, 0.3);
  cursor: pointer; display: flex; align-items: center; justify-content: center;
  color: #f9d423; font-size: 22px; z-index: 100;
  animation: fadeIn 0.8s ease-out 0.8s both, floaty 5s ease-in-out 1.6s infinite reverse;
  transition: border-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
}
#audio-control:hover {
  border-color: rgba(249, 212, 35, 0.7);
  box-shadow: 0 0 20px rgba(249, 212, 35, 0.25), 0 0 40px rgba(255, 78, 80, 0.15);
  transform: scale(1.1);
}

/*--- VOLUME PANEL ---*/
#volume-panel {
  position: fixed;
  bottom: calc(90px + env(safe-area-inset-bottom, 0px));
  right: 25px;
  background: rgba(8, 8, 18, 0.82);
  backdrop-filter: blur(30px) saturate(150%);
  -webkit-backdrop-filter: blur(30px) saturate(150%);
  border: 1px solid rgba(249, 212, 35, 0.2);
  border-radius: 20px;
  padding: 14px 14px 12px;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 10px;
  z-index: 99;
  width: 160px;
  opacity: 0;
  transform: translateY(10px) scale(0.92);
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275),
              transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-origin: bottom right;
  box-shadow: 0 8px 40px rgba(0,0,0,0.5), inset 0 0 20px rgba(255,255,255,0.02);
}
#volume-panel.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

#vol-canvas {
  border-radius: 8px;
  display: block;
  width: 100%;
  height: 44px;
}

#vol-slider-row {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
}

.vol-svg-icon {
  fill: rgba(249, 212, 35, 0.5);
  flex-shrink: 0;
}

#volume-slider {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  min-width: 0;
  height: 3px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.1);
  outline: none;
  cursor: pointer;
}
#volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f9d423, #ff4e50);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(249, 212, 35, 0.6);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
#volume-slider::-webkit-slider-thumb:hover {
  transform: scale(1.25);
  box-shadow: 0 0 14px rgba(249, 212, 35, 0.9);
}
#volume-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f9d423, #ff4e50);
  border: none;
  cursor: pointer;
  box-shadow: 0 0 8px rgba(249, 212, 35, 0.6);
}

#volume-value {
  font-size: 0.7em;
  font-weight: 600;
  background: var(--primary-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.04em;
  text-align: center;
}

@media (max-width: 768px) {
  #volume-panel {
    right: 16px;
    bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  }
}

/*--- 6. CERTIFICATES GALLERY ---*/
.cert-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.cert-header-row h2 {
    margin-bottom: 0;
}
.cert-count {
    font-size: 0.75em;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    border: 1px solid rgba(249, 212, 35, 0.3);
    background: rgba(249, 212, 35, 0.08);
    color: rgba(249, 212, 35, 0.85);
    letter-spacing: 0.04em;
}

.cert-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}

.cert-card {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
    cursor: pointer;
    opacity: 0;
    transform: translateY(24px);
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), border-color 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
}
.cert-card.visible {
    opacity: 1;
    transform: translateY(0);
}
.cert-card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: rgba(249, 212, 35, 0.4);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3), 0 0 25px rgba(249, 212, 35, 0.12);
}

.cert-img-wrap {
    position: relative;
    width: 100%;
    padding-top: 62%;
    overflow: hidden;
}
.cert-img-wrap img {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    background: rgba(255,255,255,0.03);
    transition: transform 0.4s ease, filter 0.4s ease;
}
.cert-card:hover .cert-img-wrap img {
    transform: scale(1.04);
    filter: brightness(0.5);
}
.cert-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #f9d423;
    opacity: 0;
    transform: scale(0.7);
    transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.cert-card:hover .cert-overlay {
    opacity: 1;
    transform: scale(1);
}
.cert-info {
    padding: 12px 14px 14px;
    border-top: 1px solid rgba(255,255,255,0.07);
    overflow: hidden;
}
.cert-label {
    font-size: 0.875em;
    font-weight: 600;
    background: var(--primary-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
    margin-bottom: 3px;
}
.cert-issuer {
    font-size: 0.75em;
    color: rgba(255,255,255,0.4);
    font-weight: 400;
}

/*--- 7. LIGHTBOX ---*/
#lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0);
    backdrop-filter: blur(0px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    transition: background 0.35s ease, backdrop-filter 0.35s ease;
}
#lightbox.open {
    display: flex;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(14px);
    animation: lightboxFadeIn 0.35s ease forwards;
}
@keyframes lightboxFadeIn {
    from { background: rgba(0,0,0,0); backdrop-filter: blur(0px); }
    to   { background: rgba(0,0,0,0.88); backdrop-filter: blur(14px); }
}
@keyframes lightboxFadeOut {
    from { background: rgba(0,0,0,0.88); backdrop-filter: blur(14px); opacity: 1; }
    to   { background: rgba(0,0,0,0); backdrop-filter: blur(0px); opacity: 0; }
}
#lightbox.closing {
    display: flex;
    animation: lightboxFadeOut 0.3s ease forwards;
}

.lightbox-inner {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    animation: lightboxPop 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}
@keyframes lightboxPop {
    from { opacity: 0; transform: scale(0.75) translateY(30px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes lightboxPopOut {
    from { opacity: 1; transform: scale(1) translateY(0); }
    to   { opacity: 0; transform: scale(0.75) translateY(30px); }
}
#lightbox.closing .lightbox-inner {
    animation: lightboxPopOut 0.3s cubic-bezier(0.4, 0, 1, 1) forwards;
}

#lightbox-img {
    max-width: 90vw;
    max-height: 80vh;
    border-radius: 16px;
    border: 1px solid rgba(249, 212, 35, 0.3);
    box-shadow: 0 0 60px rgba(249, 212, 35, 0.15), 0 20px 60px rgba(0,0,0,0.6);
    object-fit: contain;
}
#lightbox-title {
    font-size: 1em;
    font-weight: 600;
    background: var(--primary-grad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.lightbox-close {
    position: absolute;
    top: -18px;
    right: -18px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.1);
    color: #fff;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, transform 0.2s ease;
}
.lightbox-close:hover {
    background: rgba(255, 78, 80, 0.5);
    transform: scale(1.15) rotate(90deg);
}

/* ==============================
   MOBILE RESPONSIVE — 768px and below
   ============================== */
@media (max-width: 768px) {

  /* --- HEADER --- */
  header {
    margin-top: 30px;
    margin-bottom: 24px;
    padding: 0 16px;
  }
  .header-inner {
    flex-direction: column;
    align-items: center;
    gap: 14px;
    width: 100%;
  }
  .profile-pic {
    width: 86px;
    height: 86px;
  }
  .header-text {
    text-align: center;
    align-items: center;
    gap: 6px;
    width: 100%;
  }
  header h1 {
    font-size: 1.85em;
    text-align: center;
    line-height: 1.2;
  }
  .header-subtitle {
    text-align: center;
    font-size: 0.82em;
    line-height: 1.5;
    /* Break the · separated items onto multiple lines on very small screens */
    word-break: break-word;
  }

  /* --- NAV --- */
  nav {
    gap: 8px;
    padding: 0 12px;
    margin-bottom: 24px;
  }
  nav button {
    padding: 9px 14px;
    font-size: 0.88em;
    border-radius: 12px;
    /* Prevent buttons from being too wide or too narrow */
    flex: 1 1 auto;
    min-width: 100px;
    max-width: calc(50% - 4px);
    text-align: center;
  }

  /* --- GLASS PANEL --- */
  .content-area-wrapper {
    padding: 0 12px;
  }
  .glass {
    padding: 22px 18px;
    border-radius: 18px;
    margin-bottom: 30px;
  }
  .main-glass-panel {
    /* Disable floaty animation on mobile to avoid jitter */
    animation: fadeIn 0.8s ease-out 0.6s both;
  }

  /* --- SECTIONS --- */
  .section {
    font-size: 1em;
    line-height: 1.7;
  }
  .section h2 {
    font-size: 1.7em;
    margin-bottom: 16px;
  }

  /* --- CERTIFICATES --- */
  .cert-header-row {
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
  }
  .cert-gallery {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
  }
  .cert-info {
    padding: 10px 12px 12px;
  }
  .cert-label {
    font-size: 0.8em;
  }
  .cert-issuer {
    font-size: 0.7em;
  }

  /* --- LIGHTBOX --- */
  #lightbox-img {
    max-width: 94vw;
    max-height: 70vh;
    border-radius: 12px;
  }
  .lightbox-inner {
    max-width: 96vw;
    gap: 10px;
  }
  .lightbox-close {
    top: -14px;
    right: -10px;
    width: 30px;
    height: 30px;
    font-size: 12px;
  }
  #lightbox-title {
    font-size: 0.88em;
    text-align: center;
    padding: 0 10px;
  }

  /* --- AUDIO BUTTON --- */
  #audio-control {
    bottom: 16px;
    right: 16px;
    width: 46px;
    height: 46px;
    font-size: 18px;
  }
  #volume-panel {
    right: 16px;
    bottom: calc(72px + env(safe-area-inset-bottom, 0px));
  }

  /* --- FOOTER --- */
  footer {
    font-size: 0.88em;
    padding: 24px 16px 50px;
    line-height: 2;
  }
  .footer-links {
    gap: 0;
  }
}

/* ==============================
   EXTRA SMALL — 420px and below
   ============================== */
@media (max-width: 420px) {
  header h1 {
    font-size: 1.55em;
  }
  .header-subtitle {
    font-size: 0.76em;
  }
  nav {
    gap: 6px;
    padding: 0 8px;
  }
  nav button {
    font-size: 0.82em;
    padding: 8px 10px;
    min-width: 80px;
    border-radius: 10px;
  }
  .glass {
    padding: 18px 14px;
    border-radius: 14px;
  }
  .section h2 {
    font-size: 1.45em;
  }
  .section {
    font-size: 0.95em;
  }
  .cert-gallery {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }
}