/* ==========================================================================
   1. Imports & General Styles
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700&family=Roboto+Mono:wght@400;700&family=Sacramento&display=swap');

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Roboto Mono', monospace;
  color: #333;
  margin: 0;
  text-align: center;
  background-color: #f8f9fa;
}

/* Typography */
h1 {
  font-family:'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #11999E;
  font-size: 4rem;
  margin: 2rem auto;
}

h2 {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: #2c3e50;
  margin-bottom: 2rem;
  text-align: center;
  position: relative;
  display: inline-block;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background-color: #66BFBF;
  transition: width 0.4s ease-in-out;
}

.section.visible h2::after {
   width: 70%;
}


h3 {
  font-family: 'Montserrat', sans-serif;
  color: #66BFBF;
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

p, li {
  font-family: 'Roboto Mono', monospace;
  font-weight: 400;
  font-size: 1.2rem;
  line-height: 1.6;
  color: #555;
}

/* ==========================================================================
   2. Layout & Structure
   ========================================================================== */

.top-container {
  background-color: #E4F9F5;
  position: relative;
  padding: 100px 20px;
  overflow: hidden; /* Hide overflowing clouds */
}

.top-container .top-cloud {
  position: absolute;
  top: 90px;
  right: 50px;
  animation: drift 20s linear infinite alternate;
  width: 150px;
  opacity: 0.7;
}

.top-container .mountain-img {
    position: relative;
    bottom: -5px;
}

.section {
  padding: 80px 20px;
  background-color: #fff;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  margin-bottom: 20px;
}

.section:nth-child(even) {
  background-color: #f8f9fa;
}

.section.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   3. Navigation Bar
   ========================================================================== */

.navbar {
  background: linear-gradient(135deg, #11999E 0%, #66BFBF 100%);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 2px 15px rgba(0,0,0,0.1);
  transform: translateY(-100%);
  animation: navbarSlideIn 0.5s ease-out 0.5s forwards;
}

.navbar.solid {
  background: #11999E;
  box-shadow: 0 3px 20px rgba(0,0,0,0.2);
}

.navbar-brand {
  display: flex;
  align-items: center;
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  padding: 0.5rem 1rem;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.1);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  animation: logo-pulse 3s ease-in-out infinite;
}

.navbar-brand:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: scale(1.05);
}

.navbar-brand i {
  color: #fff;
  font-size: 1.8rem;
  margin-right: 0.8rem;
  transition: all 0.3s ease;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.navbar-brand:hover i {
  color: #66BFBF;
  transform: rotate(15deg) scale(1.2);
  text-shadow: 0 4px 8px rgba(17,153,158,0.3);
}

.navbar-brand span {
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.5px;
  position: relative;
  transition: all 0.3s ease;
  text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.navbar-brand:hover span {
  color: #E3F6F5;
  letter-spacing: 1px;
}

.navbar-nav .nav-link {
  position: relative;
  color: rgba(255,255,255,0.9) !important;
  transition: all 0.3s ease;
  font-size: 0.9rem;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: 0;
  left: 0;
  background-color: #fff;
  transition: width 0.3s ease;
}

.navbar-nav .nav-link:hover::after {
  width: 100%;
}

/* ==========================================================================
   4. Components
   ========================================================================== */

/* Profile Picture Flip */
.profile-flip-container {
    perspective: 1000px;
    width: 250px;
    height: 250px;
    margin: 0 auto 1rem auto;
    cursor: pointer;
}

.profile-flipper {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s;
    transform-style: preserve-3d;
}

.profile-flip-container.flipped .profile-flipper {
    transform: rotateY(180deg);
}

.profile-front, .profile-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 50%;
}

.profile-back {
    background: linear-gradient(135deg, #11999E 0%, #66BFBF 100%);
    color: white;
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Montserrat', sans-serif;
    font-size: 5rem;
    font-weight: 700;
    border: 4px solid #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

.profile-img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid #11999E;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}


/* Project Card */
.project-card {
  position: relative;
  background: #fff;
  border-radius: 15px;
  padding: 1.5rem;
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
  transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  height: 100%;
  overflow: visible;
  transform-style: preserve-3d;
}

.project-card:hover {
  transform: translateY(-10px) scale(1.03) rotateY(-3deg);
  box-shadow: 0 20px 40px rgba(17, 153, 158, 0.3);
}

.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, #11999E, #66BFBF);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
  border-radius: 15px;
}

.project-card:hover::before {
  opacity: 0.1;
}

.project-card::after {
    content: '';
    position: absolute;
    top: 5%;
    right: -5px;
    width: 8px;
    height: 90%;
    background: linear-gradient(to bottom, #66BFBF, #11999E);
    transform: skewY(45deg);
    border-radius: 4px;
    z-index: -1;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.project-card:hover::after {
    opacity: 1;
    transform: skewY(0) scaleY(1.05) translateX(5px) rotateZ(2deg);
    box-shadow: -2px 2px 10px rgba(0,0,0,0.2);
}

.project-card-content {
  position: relative;
  z-index: 1;
}

/* Special Project Card for Co-G App */
.project-card-special {
    background-image: linear-gradient(135deg, #4c1d95 0%, #2563eb 100%);
    border: 1px solid #3b82f6;
    border-radius: 0.75rem;
}

.project-card-special h3 {
    color: #f8fafc;
}

.project-card-special p {
    color: #cbd5e0;
}

.project-card-special .btn {
    background: linear-gradient(90deg, #84cc16 0%, #14b8a6 100%);
    box-shadow: 0 4px 15px rgba(132, 204, 22, 0.3);
    border: none;
}

.project-card-special .btn:hover {
    box-shadow: 0 8px 25px rgba(132, 204, 22, 0.4);
}

.project-card-special .btn-secondary {
    background: transparent;
    border: 1px solid #e2e8f0;
    color: #e2e8f0;
    margin-left: 10px;
}

.project-card-special .btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border-color: #fff;
}

.project-card-special:hover {
    transform: translateY(-10px) scale(1.03);
    border-color: #84cc16;
    box-shadow: 0 20px 40px rgba(76, 29, 149, 0.3);
}

.project-card-special::after,
.project-card-special::before {
    display: none;
}


/* Button */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: linear-gradient(135deg, #11999E 0%, #66BFBF 100%);
  color: #fff;
  padding: 12px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-family: 'Montserrat', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  overflow: hidden;
  transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 4px 15px rgba(17, 153, 158, 0.3);
  border: none;
  cursor: pointer;
  transform-style: preserve-3d;
}

.btn:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(17, 153, 158, 0.5);
  letter-spacing: 1px;
}

.btn::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
  transform: rotate(45deg);
  animation: shimmer 4s infinite linear;
  opacity: 0.3;
}

.btn:active::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 300px; height: 300px;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  animation: ripple 0.6s ease-out;
}

.btn .icon {
  margin-left: 10px;
  transform: translateX(0);
  transition: transform 0.3s ease;
}

.btn:hover .icon {
  transform: translateX(5px);
}

/* Social Links */
.social-links {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.social-links a {
  position: relative;
  display: inline-flex;
  color: #11999E;
  font-size: 2.5rem;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  transform-style: preserve-3d;
  text-decoration: none;
  padding: 0.5rem;
  border-radius: 50%;
  animation: float 3s ease-in-out infinite;
}

.social-links a:hover {
  color: #66BFBF;
  transform: translateY(-5px) scale(1.2);
  text-shadow: 0 5px 15px rgba(17, 153, 158, 0.3);
}

.social-links a::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(17, 153, 158, 0.1) 0%, rgba(17, 153, 158, 0) 70%);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s ease;
  z-index: -1;
}

.social-links a:hover::before {
  opacity: 1;
  transform: scale(1.8);
}

.social-links a::after {
  content: attr(title);
  position: absolute;
  bottom: -30px; left: 50%;
  transform: translateX(-50%);
  background: #11999E;
  color: white;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  opacity: 0;
  transition: all 0.3s ease;
  white-space: nowrap;
  pointer-events: none;
}

.social-links a:hover::after {
  opacity: 1;
  bottom: -25px;
}

.social-links a:nth-child(1) { animation-delay: 0.2s; transition-delay: 0.1s; }
.social-links a:nth-child(2) { animation-delay: 0.4s; }
.social-links a:nth-child(3) { animation-delay: 0.6s; }
.social-links a:nth-child(4) { animation-delay: 0.8s; }

.social-links a:nth-child(1):hover {
  background: radial-gradient(circle at 30% 107%, #fdf497 0%, #fdf497 5%, #fd5949 45%, #d6249f 60%, #285AEB 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.social-links a:nth-child(2):hover { color: #333; }
.social-links a:nth-child(3):hover { color: #0077b5; }
.social-links a:nth-child(4):hover { color: #000; }

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #11999E;
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(100px);
  transition: all 0.4s ease;
  z-index: 1000;
}

.back-to-top.show {
  opacity: 1;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: scale(1.1) translateY(-5px);
}

/* ==========================================================================
   5. Section-Specific Styles
   ========================================================================== */

/* About Section */
.about-section {
  padding: 3rem 0;
}
.about-table tbody tr {
    transition: background-color 0.3s ease;
}
.about-table tbody tr:hover {
    background-color: #e9f7f7;
}

/* Achievements Section */
.achievements-section {
  padding: 3rem 0;
}

.table {
  border-color: #11999E;
  font-size: 0.9rem;
  background-color: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.table th, .table td {
  padding: 0.75rem;
  vertical-align: middle;
}

.table thead th {
  background-color: #11999E;
  color: #fff;
  font-weight: 600;
  border: none;
}

.table tbody tr:hover {
  background-color: #e9f7f7;
  transform: scale(1.02);
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.platform strong {
  color: #2c3e50;
}

/* Featured Work Slider */
.featured-work-section {
    overflow: hidden;
    padding: 80px 0;
}
.slider-container {
    position: relative;
    width: 100%;
    height: 500px;
    perspective: 1200px;
    margin-top: 2rem;
}

.slider {
    position: absolute;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}

.slide {
    position: absolute;
    width: 380px;
    height: 450px;
    top: 10px;
    left: 50%;
    margin-left: -190px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    background: #fff;
    transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1), opacity 0.6s ease;
    display: flex;
    flex-direction: column;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
}

.slide img {
    width: 100%;
    height: 85%;
    object-fit:contain;
}

.slide-caption {
    font-family: 'Montserrat', sans-serif;
    text-align: center;
    padding: 15px;
    font-weight: 600;
    color: #2c3e50;
    background-color: #fff;
    height: 15%;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background-color: rgba(255, 255, 255, 0.7);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    color: #11999E;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-btn:hover {
    background-color: #11999E;
    color: #fff;
    transform: translateY(-50%) scale(1.1);
}

.prev-btn {
    left: 10px;
}

.next-btn {
    right: 10px;
}

/* ==========================================================================
   6. Footer
   ========================================================================== */

.bottom-container {
  background: linear-gradient(135deg, #11999E 0%, #66BFBF 100%);
  padding: 30px 0;
  color: #fff;
  position: relative;
  overflow: hidden;
  transition: all 0.5s ease;
}

.bottom-container:hover {
  box-shadow: 0 -5px 25px rgba(17,153,158,0.3);
}

.bottom-container::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: linear-gradient(45deg, transparent 25%, rgba(255,255,255,0.1) 50%, transparent 75%);
  transform: rotate(45deg);
  animation: footerShimmer 6s infinite linear;
  z-index: 0;
}

.bottom-container p {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 1rem;
  transition: all 0.3s ease;
  display: inline-block;
}

.bottom-container p:hover {
  transform: scale(1.05);
  text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 15px;
}

.footer-links a {
  color: #fff;
  text-decoration: none;
  position: relative;
  transition: all 0.3s ease;
}

.footer-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: #fff;
  transition: width 0.3s ease;
}

.footer-links a:hover::after {
  width: 100%;
}

/* ==========================================================================
   7. Animations & Keyframes
   ========================================================================== */
@keyframes drift {
    from { transform: translateX(-50px); }
    to { transform: translateX(50px); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes rotateBorder {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes shimmer {
  0% { transform: translateX(-100%) rotate(45deg); }
  100% { transform: translateX(100%) rotate(45deg); }
}

@keyframes ripple {
  from { transform: translate(-50%, -50%) scale(0); opacity: 1; }
  to { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

@keyframes footerShimmer {
  0% { transform: translateX(-100%) rotate(45deg); }
  100% { transform: translateX(100%) rotate(45deg); }
}

@keyframes navbarSlideIn {
  to { transform: translateY(0); }
}

@keyframes logo-pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}

/* ==========================================================================
   8. Media Queries & Responsive Design
   ========================================================================== */

@media (max-width: 992px) {
    .slide {
        width: 280px;
        height: 360px;
        margin-left: -140px;
    }
}

@media (max-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2rem; }
  p, li { font-size: 1rem; }

  .profile-flip-container {
    width: 200px;
    height: 200px;
  }
  .profile-back {
    font-size: 4rem;
  }

  .mountain-img {
    width: 100%;
    height: auto;
  }
  .navbar {
    padding: 0.25rem 0.5rem;
  }
  .navbar-nav .nav-link {
    font-size: 0.8rem;
  }
  .slider-container {
    height: 400px;
  }
  .slide {
    width: 220px;
    height: 300px;
    margin-left: -110px;
  }
   .slider-btn {
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
  }
  .prev-btn { left: 0; }
  .next-btn { right: 0; }
}

@media (max-width: 576px) {
  .table {
    font-size: 0.8rem;
  }
  .table th, .table td {
    padding: 0.5rem;
  }
  .slider-container {
    height: 350px;
  }
   .slide {
    width: 200px;
    height: 270px;
    margin-left: -100px;
  }
}