/* /assets/styles.css */
/* Required project styling: Flex, Grid, Cards, Sections */
@import url(https://fonts.googleapis.com/css?family=Raleway:100,200,300,regular,500,600,700,800,900,100italic,200italic,300italic,italic,500italic,600italic,700italic,800italic,900italic);

/* =========================
   CSS Variables
========================= */
:root {
  /* Colors */
  --primary-color: #004687;
  --secondary-color: #004687;
  --bg-primary: #FFF8EC;
  --text-color: #222222;
  --text-color-two: #ffffff;
  --bg-secondary: #000000;
  --card-background: #1d1d1d;
  --bg-secondary-two: #111111;

  --shadow: 0 10px 40px rgba(0, 0, 0, 0.2);

  /* Font Weight */
  --weight-small: 400;
  --weight-semibold: 600;
  --weight-bold: 800;

  /* Max width */
  --width-small: 600px;
  --width-medium: 1100px;
  --width-large: 1300px;
}

[data-theme="dark"] {
  --primary-color: #71BC78;
  --secondary-color: #71BC78;
  --bg-primary: #000000;
  --text-color: #ffffff;
  --text-color-two: #222222;
  --bg-secondary: #ffffff;
  --card-background: #ffffff;
  --bg-secondary-two: #f4f4f4;
  --shadow: 0 2px 10px rgba(95, 95, 95, 0.2);
}

/* =========================
   Base / Reset
========================= */
html { font-size: 100%; scroll-behavior: smooth; }
* { margin: 0; padding: 0; box-sizing: border-box; }
ul { list-style: none; }
a { text-decoration: none; color: var(--text-color); }
body {
  background: var(--bg-primary);
  color: var(--text-color);
  font-family: "Raleway", sans-serif;
  line-height: 1.5;
}

/* =========================
   Navbar
========================= */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 20;
  background: var(--bg-primary);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.navbar .container {
  display: grid !important;
  grid-template-columns: 1fr 1fr !important;
  align-items: center;
  z-index: 20; height: 80px; width: 100%; max-width: 1200px;
  margin: 0 auto; padding: 0 2rem !important;
}

/* Left Navigation */
.nav-left {
  display: flex !important; align-items: center; gap: 2rem; justify-self: start;
}

.nav-left .nav-link {
  font-size: 0.9rem; font-weight: var(--weight-semibold);
  color: var(--text-color); position: relative; transition: color 0.3s ease;
}
.nav-left .nav-link:hover { color: var(--primary-color); }
.nav-left .nav-link::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: var(--primary-color); transition: width 0.3s ease;
}
.nav-left .nav-link:hover::after,
.nav-left .nav-link.active::after { width: 100%; }
.nav-left .nav-link.active { color: var(--primary-color); }

/* Center Logo */
.nav-center { display: flex; justify-content: center; align-items: center; }
.nav-center #logo { margin: 0; }
.nav-center #logo img { display: block; width: 40px; height: 40px; transition: transform 0.3s ease; }
.nav-center #logo img:hover { transform: scale(1.05); }

/* Right Section */
.nav-right { display: flex !important; align-items: center; gap: 1.5rem; justify-self: end; }

/* Social Icons */
.social-icons { display: flex; align-items: center; gap: 1rem; }
.social-icons a {
  display: flex; align-items: center; justify-content: center;
  width: 24px; height: 24px; transition: transform 0.3s ease, opacity 0.3s ease;
}
.social-icons img {
  width: 20px; height: 20px;
  filter: brightness(0) saturate(100%) invert(27%) sepia(51%) saturate(2878%) hue-rotate(346deg) brightness(104%) contrast(97%);
  transition: filter 0.3s ease; display: block;
}
.social-icons a:hover { transform: scale(1.1); }
.social-icons a:hover img {
  filter: brightness(0) saturate(100%) invert(27%) sepia(51%) saturate(2878%) hue-rotate(346deg) brightness(104%) contrast(97%) opacity(0.7);
}
.social-icons a[href*="linkedin"] img {
  filter: brightness(0) saturate(100%) invert(20%) sepia(100%) saturate(2000%) hue-rotate(200deg) brightness(95%) contrast(85%);
  width: 24px; height: 24px;
}
.social-icons a[href*="linkedin"]:hover img {
  filter: brightness(0) saturate(100%) invert(20%) sepia(100%) saturate(2000%) hue-rotate(200deg) brightness(95%) contrast(85%) opacity(0.7);
}

/* Theme Toggle */
.theme-switch { position: relative; }
.theme-switch input[type="checkbox"] { opacity: 0; position: absolute; width: 0; height: 0; }
.toggle-icons {
  display: flex; align-items: center; justify-content: center;
  width: 60px; height: 30px; border-radius: 15px; background: #000000;
  cursor: pointer; transition: all 0.3s ease; position: relative; overflow: hidden;
}
.theme-switch input:checked + .toggle-icons {
  background: #666666;
}
.toggle-icons:hover { background: var(--primary-color); transform: scale(1.05); }
.toggle-icons img { 
  width: 18px; height: 18px; position: absolute; 
  top: 50%; transform: translateY(-50%);
  transition: opacity 0.3s ease, transform 0.3s ease;
  filter: brightness(0) saturate(100%) invert(100%);
}
.toggle-icons .moon { opacity: 1; left: 8px; }
.toggle-icons .sun { 
  opacity: 0; right: 8px;
  filter: brightness(0) saturate(100%) invert(85%) sepia(100%) saturate(2000%) hue-rotate(5deg) brightness(150%) contrast(120%) drop-shadow(0 0 2px #FFD700);
}
.theme-switch input:checked + .toggle-icons .moon { opacity: 0; transform: translateY(-50%) translateX(-5px); }
.theme-switch input:checked + .toggle-icons .sun { opacity: 1; transform: translateY(-50%) translateX(5px); }

/* Hamburger / Toggle */
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  position: relative; width: 30px; height: 25px;
}
.hamburger { margin-bottom: 0.1rem; display: none; cursor: pointer; padding: 0.2rem 0.4rem; justify-self: end; }
.bar {
  display: block; width: 23px; height: 3px; margin: 4px auto; transition: all 0.3s ease-in-out;
  border-radius: 30px; background-color: var(--bg-secondary);
}
.hamburger, .hamburger::before, .hamburger::after {
  content: ''; display: block; width: 100%; height: 3px; border-radius: 3px; position: absolute; transition: all 0.3s ease-in-out;
}
.hamburger { top: 50%; transform: translateY(-50%); }
.hamburger::before { top: -8px; }
.hamburger::after { top: 8px; }
.nav-toggle:hover .hamburger,
.nav-toggle:hover .hamburger::before,
.nav-toggle:hover .hamburger::after { background-color: #0056b3; } /* why: stronger hover affordance */
.nav-toggle.active .hamburger { background-color: transparent; }
.nav-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
.nav-toggle.active .hamburger::after { transform: rotate(-45deg); top: 0; }

/* =========================
   Hero
========================= */
#hero { display: flex; flex-direction: column; height: 100%; }

/* Avatar */
.profile-image {
  width: clamp(120px, 22vw, 200px);
  height: auto;
  border-radius: 70%;
  margin-bottom: 1rem;
  transition: transform 0.2s ease;
  transform: translateZ(0); /* why: fix sub-pixel fuzz */
}

/* Header container */
.header-container {
  padding: calc(80px + 2.5rem) 1rem 2.5rem; /* space under fixed nav */
  text-align: center; max-width: var(--width-medium); margin: 0 auto;
}
.header-container h1 { font-weight: var(--weight-bold); letter-spacing: -0.015em; margin: 1rem 0 0.25rem; }
.header-container .intro {
  max-width: 640px; margin: 0.75rem auto 1.25rem;
  font-size: clamp(16px, 1.6vw, 19px); line-height: 1.6; opacity: 0.92;
}
.btn-group { display: inline-flex; gap: 0.75rem; flex-wrap: wrap; }

/* Rainbow name (calmer) */
.rainbow-name {
  display: inline-block; font-weight: var(--weight-bold);
  background: linear-gradient(90deg,#ff4e50,#f9d423,#1fe4f5,#3fbafe,#b993d6);
  background-size: 250% 100%;
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  animation: smoothRainbow 14s linear infinite;
}

/* =========================
   Sections / About
========================= */
.division { width: 100%; height: 4px; background-color: var(--card-background); margin: 7rem 0; border-radius: 2px; }
.about-heading { text-align: center; margin-bottom: 1.25rem; }
.about-content {
  max-width: 800px; margin: 2rem auto 0; text-align: left; padding: 0 1rem;
}
.about-content h2 { font-size: 1.5rem; font-weight: var(--weight-semibold); margin: 2rem 0 1rem; color: var(--primary-color); }
.about-content p,
.about-content li { font-size: 1rem; line-height: 1.6; margin-bottom: 0.5rem; opacity: 0.9; }
.about-content ul { margin: 1rem 0; padding-left: 1.5rem; }
.about-me .content-text { max-width: 1060px; margin: 0 auto; padding: 0 1rem; text-align: left; }

/* =========================
   Projects
========================= */
#projects { display: flex; flex-direction: column; margin: 2rem auto 5rem; }
#projects .btn { align-self: center; margin: 2rem 0; }
.project {
  display: grid; grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: minmax(250px, auto); grid-gap: 1.1rem;
}
.card .project-bio p { font-size: 0.83rem; color: #ffffff; }
.card .project-bio h3 { font-size: 0.9rem; color: #ffffff; margin-bottom: 0.25rem; }
.project-info { display: flex; justify-content: space-between; opacity: 0; position: relative; transition: 0.5s ease-in-out; }
.project-bio { 
  position: absolute; bottom: 0; left: 0; right: 0;
  background: rgba(0, 0, 0, 0.85);
  padding: 1rem;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}
.card:hover .project-bio {
  transform: translateY(0);
}
.card {
  position: relative;
}
.card:hover::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 1;
}
.card .project-bio {
  position: relative;
  z-index: 2;
}

/* =========================
   Footer
========================= */
#footer { background: #111111; }
#footer .container {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #ffffff; min-height: 160px; text-align: center;
}
#footer a { font-size: 0.8rem; color: #fff; }
#footer a:hover { opacity: 0.6; }
#footer .social { margin: 0.9rem 0; }
#footer .social img { width: 20px; height: 20px; }
#footer .social a { margin: 0 0.5rem; }
#footer p { font-size: 0.8rem; }

/* =========================
   Decorative Effects
========================= */
.stars-wrapper {
  position: fixed; top: 0; left: 0; width: 100%; height: 100%;
  z-index: -10; pointer-events: none; overflow: hidden;
}
.star {
  position: absolute; background-color: white; opacity: 0.6;
  box-shadow: 0 0 6px white; animation: twinkle 2s infinite ease-in-out, float 6s infinite ease-in-out alternate;
  border-radius: 50%;
}
.star {
  width: var(--star-size, 2px);
  height: var(--star-size, 2px);
}

/* Petals */
.petals-wrapper { position: absolute; inset: 0; pointer-events: none; overflow: visible; z-index: -10; }
.svg-petal {
  position: absolute; width: var(--petal-size); height: var(--petal-size);
  animation: fall linear forwards; animation-duration: var(--fall-duration); animation-fill-mode: forwards;
  z-index: -10;
}

/* Front petals that fall in front of content */
.front-petals-wrapper { 
  position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 5; 
}
.front-petal {
  position: absolute; width: var(--petal-size); height: var(--petal-size);
  animation: fall linear forwards; animation-duration: var(--fall-duration); animation-fill-mode: forwards;
  opacity: 0.3;
  z-index: 5;
}

/* Mode-based visibility helpers */
[data-theme='dark'] .light-only { visibility: hidden; }
[data-theme='light'] .light-only { visibility: visible; }

/* A11y helper: screen-reader-only */
.visually-hidden {
  position: absolute !important; height: 1px; width: 1px;
  overflow: hidden; clip: rect(1px, 1px, 1px, 1px);
  white-space: nowrap; border: 0; padding: 0; margin: -1px;
}

/* =========================
   Keyframes
========================= */
@keyframes ball-bounce {
  0% { transform: translateY(0) scaleX(1) scaleY(1); }
  20% { transform: translateY(-25px) scaleX(1) scaleY(1); }
  40% { transform: translateY(0) scaleX(1.05) scaleY(0.95); }
  60% { transform: translateY(-15px) scaleX(1) scaleY(1); }
  80% { transform: translateY(0) scaleX(1.03) scaleY(0.97); }
  100% { transform: translateY(0) scaleX(1) scaleY(1); }
}
@keyframes smoothRainbow {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}
@keyframes twinkle { 0%, 100% { opacity: 0.3; } 50% { opacity: 1; } }
@keyframes float { 0% { transform: translate(0, 0); } 100% { transform: translate(100px, -100px); } }
@keyframes fall {
  0% { transform: translateX(var(--x-start)) translateY(calc(-1 * var(--petal-size))) rotate(var(--spin-start)); }
  25% { transform: translateX(var(--x-mid1)) translateY(25vh) rotate(var(--spin-mid1)); }
  50% { transform: translateX(var(--x-mid2)) translateY(50vh) rotate(var(--spin-mid2)); }
  75% { transform: translateX(var(--x-mid3)) translateY(75vh) rotate(var(--spin-mid3)); }
  100% { transform: translateX(var(--x-end)) translateY(100vh) rotate(var(--spin-end)); }
}

/* =========================
   Accessibility / Motion
========================= */
@media (prefers-reduced-motion: reduce) {
  .petals-wrapper, .stars-wrapper { display: none; } /* why: avoid motion sickness */
  .rainbow-name { animation: none; }
}

/* =========================
   Responsiveness
========================= */
@media (max-width: 1000px) {
  .project { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile and tablet navbar fixes */
@media (max-width: 1024px) {
  .navbar .container {
    grid-template-columns: 1fr auto !important;
    padding: 0 1rem !important;
    max-width: 100% !important;
  }
  
  .nav-left, .nav-right {
    display: none !important;
  }
  
  .hamburger {
    display: block !important;
    cursor: pointer;
    z-index: 20;
  }
  
  .hamburger .bar {
    display: block !important;
    width: 25px !important;
    height: 3px !important;
    margin: 5px auto !important;
    background-color: var(--text-color) !important;
    border-radius: 2px !important;
    transition: all 0.3s ease !important;
  }
  
  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg) !important;
  }
  
  .hamburger.active .bar:nth-child(2) {
    opacity: 0 !important;
  }
  
  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg) !important;
  }
  
  .nav-left.active {
    display: flex !important;
    position: fixed !important;
    top: 80px !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--bg-primary) !important;
    flex-direction: column !important;
    padding: 2rem !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
    z-index: 15 !important;
    gap: 0 !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
  }
  
  .nav-right.active {
    display: flex !important;
    position: fixed !important;
    top: calc(80px + 200px) !important;
    left: 0 !important;
    right: 0 !important;
    background: var(--bg-primary) !important;
    flex-direction: row !important;
    justify-content: center !important;
    align-items: center !important;
    padding: 1.5rem !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
    z-index: 15 !important;
    gap: 2rem !important;
  }
  
  .nav-left.active .nav-link {
    padding: 1rem 0 !important;
    text-align: center !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
    width: 100% !important;
    font-size: 1.1rem !important;
  }
  
  .nav-left.active .nav-link:last-child {
    border-bottom: none !important;
  }
}

@media (max-width: 768px) {
  .social-icons { flex-direction: column; gap: 1rem; }
}

@media (max-width: 670px) {
  .header-container { padding-top: calc(80px + 1.25rem); }
  .header-container .intro { max-width: 540px; }
}

@media (max-width: 600px) {
  .project { grid-template-columns: 1fr; }
  .header-container .btn { border-radius: 5px; width: 80%; }
}

/* Ensure desktop nav shows on larger screens */
@media (min-width: 1025px) {
  .nav-left, .nav-right {
    display: flex !important;
  }
  
  .hamburger {
    display: none !important;
  }
}