/* ================================================
   PORTFOLIO — Shubhranshu Sudeepta Panda
   Dark mode with mint green accent
   Matching reference: my-portfolio-dusky-seven-25
   ================================================ */

/* ----- Theme Variables ----- */

:root {
  --text-color: white;
  --highlight-color: #00FF9C;
  --bg-color: #121212;
  --fade-end: rgba(18, 18, 18, 0);
  --spotlight-bg: #00FF9C;
  --muted-color: #888;
  --muted-light: #9c9c9c;
  --card-bg: #1a1a1a;
  --line-color: #878787;
  --about-left-color: #888;
  --project-desc-color: #999;
}

body.light {
  --text-color: #121212;
  --highlight-color: #1F67F1;
  --bg-color: white;
  --fade-end: rgba(255, 255, 255, 0);
  --spotlight-bg: #1F67F1;
  --muted-color: #555;
  --muted-light: #666;
  --card-bg: #f0f0f0;
  --line-color: #ccc;
  --about-left-color: #555;
  --project-desc-color: #666;
}

/* ----- Reset ----- */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

html, body {
  font-family: 'DM Sans', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }

button {
  background: none; border: none; cursor: pointer;
  color: inherit; font-family: inherit;
}

img { max-width: 100%; display: block; }

::selection { background: var(--highlight-color); color: var(--bg-color); }

/* ================================================
   NAVIGATION
   ================================================ */

.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: var(--bg-color);
}

.nav-container {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
}

/* Hamburger */
.hamburger-container {
  position: relative;
}

.hamburger-button {
  background: transparent;
  border: none;
  font-size: 2.5rem;
  cursor: pointer;
  color: inherit;
}

/* Dropdown Menu */
.dropdown-menu {
  font-family: 'Big Shoulders Display', sans-serif;
  position: absolute;
  top: 100%;
  left: -6rem;
  padding: 1rem;
  z-index: 10;
  border-radius: 8px;
}

.dropdown-menu ul {
  list-style: none;
}

.dropdown-menu li {
  margin: 0.5rem 0;
  font-size: 2.25rem;
  letter-spacing: 0.07em;
  cursor: pointer;
}

.dropdown-menu ul li a:hover {
  color: var(--highlight-color);
}

.dropdown-menu ul li a {
  text-decoration: none;
  color: inherit;
}

.dropdown-menu ul a.active {
  color: var(--highlight-color);
}

/* Toggle Switch */
.toggle-switch {
  display: inline-block;
  width: 70px;
  height: 34px;
  position: relative;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: 40px;
  transition: background-color 0.2s;
}

.knob {
  position: absolute;
  top: 2px; left: 2px;
  width: 30px; height: 30px;
  border-radius: 50%;
  background-color: var(--text-color);
  transition: left 0.2s;
}

/* ================================================
   HERO SECTION
   ================================================ */

.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 5rem 5rem 0;
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-title {
  font-family: 'Big Shoulders Display', sans-serif;
  font-size: clamp(4rem, 11vw, 12rem);
  line-height: 0.92;
  margin: 0;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.01rem;
  color: var(--highlight-color);
}

.hero-line {
  display: block;
}

.hero-image-container {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: clamp(120px, 14vw, 176px);
  height: clamp(190px, 22vw, 280px);
  border-radius: 41%;
  overflow: hidden;
  transition: transform 0.15s ease-out;
  cursor: grab;
}

.hero-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ================================================
   INTRO SECTION
   ================================================ */

.intro-section {
  text-align: center;
  padding: 0 1rem 1rem;
  position: relative;
}

.intro-text {
  max-width: 600px;
  margin: 3rem auto 2rem;
  font-size: 1.3rem;
  line-height: 1.5;
}

/* Scroll Prompt */
.scroll-prompt {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.scroll-track {
  position: relative;
  width: 3px;
  height: 30px;
  background-color: var(--line-color);
  border-radius: 10%;
}

.scroll-line {
  position: absolute;
  width: 3.2px;
  height: 15px;
  background-color: var(--highlight-color);
  top: 0;
  left: 0;
  animation: bounce 1s infinite alternate;
}

.scroll-text {
  margin-top: -0.5rem;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  color: var(--line-color);
}

@keyframes bounce {
  0% { transform: translateY(0); }
  100% { transform: translateY(15px); }
}

/* ================================================
   ABOUT SECTION
   ================================================ */

.about-section {
  margin-top: 4rem;
  padding: 0 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.about-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.about-title {
  font-size: 2.5rem;
  letter-spacing: 1.5px;
  color: var(--highlight-color);
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  white-space: nowrap;
  margin: 0;
}

.line-container {
  position: relative;
  width: 800px;
  height: 4px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  background-color: transparent;
}

.line-base {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 4px;
  background-color: var(--line-color);
  z-index: 1;
}

.line-highlight {
  position: absolute;
  right: 0;
  width: 80px;
  height: 4px;
  background-color: var(--highlight-color);
  z-index: 2;
}

.about-content {
  display: flex;
  gap: 4rem;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
}

.about-left {
  flex: 1;
  max-width: 50%;
  font-size: 23px;
  color: var(--about-left-color);
}

.about-left p {
  font-family: 'DM Sans', sans-serif;
  line-height: 1.8;
  margin: 1;
}

.about-right {
  flex: 1;
  max-width: 50%;
  font-size: 20px;
}

.about-right p {
  font-family: 'DM Sans', sans-serif;
  line-height: 1.8;
  margin-bottom: 0;
}

/* ================================================
   SKILLS SECTION (stacked cards)
   ================================================ */

.skills-section {
  margin-top: 6rem;
  padding: 0 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.skills-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.skills-title {
  font-size: 2.5rem;
  letter-spacing: 1.5px;
  color: var(--highlight-color);
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  white-space: nowrap;
  margin: 0;
}

.skills-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.highlight-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 450px;
  height: 100px;
  background-color: var(--highlight-color);
  padding: 1.2rem 1.6rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 251, 149, 0.25);
  font-family: 'DM Sans', sans-serif;
  transition: transform 0.2s ease;
}

.highlight-box:hover {
  transform: translateY(-3px);
}

.highlight-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.highlight-box h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
  color: #000;
}

.highlight-box p {
  font-size: 0.85rem;
  color: #000;
  margin: 0;
}

.highlight-right span {
  font-size: 1.6rem;
  font-weight: 800;
  color: #000;
  margin-left: 1rem;
}

.stacked-card {
  position: relative;
  margin-top: -5px;
  z-index: 1;
}

/* ================================================
   PROJECTS SECTION
   ================================================ */

.projects-section {
  margin-top: 8rem;
  margin-bottom: 9rem;
  padding: 0 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.projects-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.projects-title {
  font-size: 2.5rem;
  letter-spacing: 1.5px;
  color: var(--highlight-color);
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  white-space: nowrap;
  margin: 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  background-color: var(--card-bg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 255, 156, 0.15);
}

.project-img-wrap {
  overflow: hidden;
}

.project-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
  filter: brightness(0.8);
  transition: all 0.4s ease;
}

.project-card:hover img {
  filter: brightness(1);
  transform: scale(1.05);
}

.project-info {
  padding: 1.2rem 1.4rem;
}

.project-name {
  font-family: 'Big Shoulders Display', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--highlight-color);
  margin: 0 0 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-desc {
  font-size: 0.85rem;
  color: var(--project-desc-color);
  line-height: 1.5;
  margin: 0;
}

/* ================================================
   EXPERIENCE SECTION
   ================================================ */

.exp-section {
  margin-top: 8rem;
  padding: 0 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 5rem;
}

.exp-header {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.exp-title {
  font-size: 2.5rem;
  letter-spacing: 1.5px;
  color: var(--highlight-color);
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  white-space: nowrap;
  margin: 0;
}

.experience-content {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  padding: 2rem;
}

.experience-left, .experience-right {
  flex: 1;
}

.experience-left h3, .experience-right h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.company {
  font-size: 1rem;
  color: var(--muted-color);
}

.dates {
  font-size: 0.9rem;
  color: var(--muted-color);
  margin-bottom: 1rem;
}

.desc {
  font-size: 1rem;
  line-height: 1.6;
}

/* ================================================
   MARQUEE SECTION
   ================================================ */

.marquee-section {
  position: relative;
  overflow: hidden;
  background-color: var(--bg-color);
  padding: 1rem 0;
}

.marquee-section::before,
.marquee-section::after {
  content: "";
  position: absolute;
  top: 0;
  width: 10%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
}

.marquee-section::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-color), var(--fade-end));
}

.marquee-section::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-color), var(--fade-end));
}

.marquee-line {
  display: inline-block;
  white-space: nowrap;
  font-size: 9rem;
  font-weight: 900;
  color: var(--highlight-color);
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  letter-spacing: 1.2px;
}

.marquee-line-left {
  animation: scrollLeft 35s linear infinite;
}

.marquee-line-right {
  animation: scrollRight 35s linear infinite;
}

@keyframes scrollLeft {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@keyframes scrollRight {
  0% { transform: translateX(-50%); }
  100% { transform: translateX(0); }
}

/* ================================================
   CONTACT SECTION
   ================================================ */

.contact-section {
  margin-top: 4rem;
  padding: 0 2rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 4rem;
}

.contact-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2.5rem;
  justify-content: center;
}

.contact-title {
  font-size: 2.5rem;
  letter-spacing: 1.5px;
  color: var(--highlight-color);
  font-family: 'Big Shoulders Display', sans-serif;
  text-transform: uppercase;
  white-space: nowrap;
  margin: 0;
}

.contact-content {
  display: flex;
  gap: 4rem;
  justify-content: space-between;
  flex-wrap: wrap;
  padding-bottom: 2rem;
}

.contact-left {
  flex: 1;
  max-width: 40%;
  font-size: 16px;
  line-height: 1.6;
  color: var(--muted-light);
}

.contact-left p {
  margin-bottom: 1rem;
}

.contact-right {
  flex: 1;
  max-width: 60%;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  margin-top: 1.5rem;
}

.contact-icons {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.contact-icons a {
  color: var(--highlight-color);
  transition: opacity 0.2s ease;
}

.contact-icons a:hover {
  opacity: 0.7;
}

.contact-icons a svg {
  width: 32px;
  height: 32px;
}

/* ================================================
   SPOTLIGHT / CURSOR FOLLOWER
   ================================================ */

.spotlight {
  position: fixed;
  pointer-events: none;
  width: 150px;
  height: 150px;
  border-radius: 50%;
  background: radial-gradient(circle, transparent 50%, var(--spotlight-bg) 100%);
  transform: translate(-50%, -50%);
  z-index: 9999;
  transition: background 0.2s ease;
}

/* ================================================
   RESPONSIVE — Tablet & Mobile
   ================================================ */

@media (max-width: 768px) {
  .hero-title {
    font-size: 4rem;
  }

  .hero-image-container {
    width: 150px;
    height: 150px;
    bottom: -30px;
  }

  .about-content {
    flex-direction: column;
  }

  .about-left, .about-right {
    max-width: 100%;
  }

  .skills-list {
    width: 100%;
  }

  .highlight-box {
    width: 100%;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .highlight-left {
    flex: 1;
  }

  .about-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .line-container {
    max-width: 100%;
  }

  .experience-content {
    flex-direction: column;
  }

  .experience-left, .experience-right {
    max-width: 100%;
  }

  .contact-content {
    flex-direction: column;
  }

  .contact-left, .contact-right, .line-container {
    max-width: 100%;
  }

  .marquee-line {
    font-size: 2.5rem;
  }
}

/* ================================================
   REDUCED MOTION
   ================================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}