/* ========================================
   MIHIR ADHIKARY — PORTFOLIO STYLES
   Design: Academic-Editorial, Forest Green + Navy
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&family=DM+Sans:wght@300;400;500;600&display=swap');

/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --sidebar-w: 290px;
  --sidebar-bg: #141924;
  --sidebar-border: rgba(255,255,255,0.07);
  --accent: #4a9b72;
  --accent-hover: #3a8460;
  --accent-dim: rgba(74,155,114,0.12);
  --page-bg: #f4f1ec;
  --card-bg: #ffffff;
  --text-1: #1a1a1a;
  --text-2: #5c5c5c;
  --text-3: #9a9a9a;
  --border: #e5dfd6;
  --shadow-sm: 0 2px 14px rgba(0,0,0,0.06);
  --shadow: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.14);
  --radius: 14px;
  --radius-sm: 8px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--page-bg);
  color: var(--text-1);
  line-height: 1.65;
  min-height: 100vh;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ===== LAYOUT ===== */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
  background: var(--sidebar-bg);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 2.25rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-right: 1px solid var(--sidebar-border);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.1) transparent;
}

/* Avatar */
.avatar-section {
  text-align: center;
  padding-bottom: 1.5rem;
}

.avatar-wrap {
  position: relative;
  width: 96px;
  height: 96px;
  margin: 0 auto 1rem;
}

.avatar-wrap img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  position: relative;
  z-index: 1;
}

.avatar-ring {
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  border: 1px dashed rgba(74,155,114,0.5);
  animation: spin 18s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.sidebar-name {
  color: #ffffff;
  font-family: 'Playfair Display', serif;
  font-size: 1.18rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  letter-spacing: 0.01em;
}

.sidebar-role {
  color: var(--accent);
  font-size: 0.73rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.show-contacts-btn {
  display: none;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  color: #b0b8c8;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.78rem;
  padding: 0.4rem 1rem;
  border-radius: 20px;
  cursor: pointer;
  margin-top: 0.75rem;
  transition: all 0.2s;
}
.show-contacts-btn:hover { background: rgba(255,255,255,0.1); }

/* Divider */
.s-divider {
  height: 1px;
  background: var(--sidebar-border);
  margin: 0.25rem 0;
}

/* Contacts */
.contact-section { padding: 1.25rem 0; }

.contact-list { list-style: none; display: flex; flex-direction: column; gap: 1.1rem; }

.contact-item { display: flex; align-items: flex-start; gap: 0.75rem; }

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
  font-size: 1rem;
}

.contact-label {
  display: block;
  font-size: 0.67rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.15rem;
}

.contact-value {
  display: block;
  font-size: 0.8rem;
  color: #b8c0d0;
  word-break: break-word;
  line-height: 1.4;
}
.contact-value a { color: inherit; transition: color 0.2s; }
.contact-value a:hover { color: var(--accent); }

/* Socials */
.social-section { padding: 1rem 0 0.5rem; }

.social-list { list-style: none; display: flex; gap: 0.5rem; flex-wrap: wrap; }

.social-link {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9aa0b0;
  font-size: 1rem;
  transition: all 0.25s var(--ease);
}
.social-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(74,155,114,0.35);
}

/* ===== MAIN CONTENT ===== */
.main-content {
  padding: 2.5rem 2.75rem;
  min-height: 100vh;
}

/* ===== NAVBAR ===== */
.navbar {
  display: flex;
  gap: 0.35rem;
  background: var(--card-bg);
  padding: 0.45rem;
  border-radius: var(--radius);
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  flex-wrap: wrap;
}

.navbar a {
  padding: 0.48rem 1.05rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-2);
  transition: all 0.2s var(--ease);
  white-space: nowrap;
  letter-spacing: 0.01em;
}

.navbar a:hover {
  background: var(--accent-dim);
  color: var(--accent);
}

.navbar a.active {
  background: var(--accent);
  color: white;
  box-shadow: 0 2px 10px rgba(74,155,114,0.3);
}

/* ===== PAGE HEADER ===== */
.page-header { margin-bottom: 2rem; }

.page-header h2 {
  font-family: 'Playfair Display', serif;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--text-1);
  line-height: 1.15;
}

.header-rule {
  width: 44px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 0.65rem;
}

/* ===== SECTION HEADINGS ===== */
.sec-title {
  font-family: 'Playfair Display', serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-1);
  margin-bottom: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.sec-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ===== ABOUT TEXT ===== */
.about-text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.75rem;
}

.about-text p {
  color: var(--text-2);
  font-size: 0.94rem;
  line-height: 1.85;
}

/* ===== SERVICE GRID ===== */
.section-block { margin-bottom: 2.75rem; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1.1rem;
}

.service-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--border);
  transition: all 0.3s var(--ease);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.3s var(--ease);
  transform-origin: left;
}

.service-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: transparent;
}

.service-card:hover::before { transform: scaleX(1); }

.service-icon {
  width: 46px;
  height: 46px;
  background: var(--accent-dim);
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}
.service-icon img { width: 24px; height: 24px; object-fit: contain; }

.service-card h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.35;
}

.service-card p {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* ===== TESTIMONIALS ===== */
.testimonials-scroll {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.testimonial-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.35rem;
  border: 1px solid var(--border);
  min-width: 270px;
  flex-shrink: 0;
  transition: box-shadow 0.25s;
}
.testimonial-card:hover { box-shadow: var(--shadow); }

.t-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.t-header img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  object-fit: cover;
}

.t-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-1);
}

.t-text {
  font-size: 0.82rem;
  color: var(--text-2);
  line-height: 1.7;
  font-style: italic;
  padding-left: 0.5rem;
  border-left: 2px solid var(--accent-dim);
}

/* ===== CLIENTS ===== */
.clients-row {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.clients-row img {
  height: 34px;
  object-fit: contain;
  filter: grayscale(1) opacity(0.4);
  transition: filter 0.25s;
}
.clients-row img:hover { filter: grayscale(0) opacity(1); }

/* ===== TIMELINE ===== */
.timeline-section { margin-bottom: 2.5rem; }

.timeline-list {
  list-style: none;
  position: relative;
  padding-left: 1.75rem;
}

.timeline-list::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent) 60%, transparent);
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem 1.5rem;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px; top: 7px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--page-bg);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-item h4 {
  font-size: 0.93rem;
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: 0.25rem;
}

.timeline-year {
  display: inline-block;
  font-size: 0.73rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.06em;
  background: var(--accent-dim);
  padding: 0.15rem 0.55rem;
  border-radius: 20px;
  margin-bottom: 0.35rem;
}

.timeline-item p {
  font-size: 0.85rem;
  color: var(--text-2);
}

/* ===== SKILLS ===== */
.skills-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--border);
  margin-bottom: 2.5rem;
}

.skill-item { margin-bottom: 1.25rem; }
.skill-item:last-child { margin-bottom: 0; }

.skill-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.45rem;
}

.skill-label span:first-child {
  font-size: 0.87rem;
  font-weight: 500;
  color: var(--text-1);
}

.skill-pct {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
}

.skill-track {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #7ecda0);
  border-radius: 3px;
  width: 0;
  transition: width 1.3s var(--ease);
}

/* ===== PUBLICATION CARDS ===== */
.pub-section { margin-bottom: 3rem; }

.pub-list { list-style: none; display: flex; flex-direction: column; gap: 1.1rem; }

.pub-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  background: var(--card-bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: all 0.3s var(--ease);
  text-decoration: none;
  color: inherit;
}

.pub-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(74,155,114,0.3);
  transform: translateX(4px);
}

.pub-img {
  width: 100%;
  height: 130px;
  object-fit: cover;
  display: block;
}

.pub-body { padding: 1.1rem 1.25rem; }

.pub-meta {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.pub-journal {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 0.18rem 0.6rem;
  border-radius: 20px;
}

.pub-date {
  font-size: 0.73rem;
  color: var(--text-3);
  font-weight: 400;
}

.pub-title {
  font-family: 'Playfair Display', serif;
  font-size: 0.93rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.35rem;
  color: var(--text-1);
}

.pub-abstract {
  font-size: 0.79rem;
  color: var(--text-2);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===== CONFERENCE / PORTFOLIO GRID ===== */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.filter-btn {
  padding: 0.38rem 1rem;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  transition: all 0.2s var(--ease);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.conf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.1rem;
}

.conf-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s var(--ease);
  display: block;
}

.conf-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-5px);
  border-color: transparent;
}

.conf-img-wrap {
  position: relative;
  height: 145px;
  overflow: hidden;
}

.conf-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s var(--ease);
}
.conf-card:hover .conf-img-wrap img { transform: scale(1.08); }

.conf-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(20,25,36,0.75) 40%, transparent);
}

.conf-cat-badge {
  position: absolute;
  top: 0.65rem; right: 0.65rem;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: var(--accent);
  color: white;
  padding: 0.2rem 0.55rem;
  border-radius: 20px;
}

.conf-body { padding: 1rem; }

.conf-body h4 {
  font-size: 0.86rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 0.3rem;
  color: var(--text-1);
}

.conf-body p {
  font-size: 0.76rem;
  color: var(--text-3);
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.conf-hidden { display: none; }

/* ===== CONTACT ===== */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  align-items: start;
}

.map-wrap iframe {
  width: 100%;
  height: 270px;
  border: none;
  border-radius: var(--radius);
  display: block;
}

.contact-form-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid var(--border);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }

.form-group { margin-bottom: 1rem; }

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 0.4rem;
  letter-spacing: 0.02em;
}

.form-input {
  width: 100%;
  padding: 0.68rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.86rem;
  color: var(--text-1);
  background: var(--page-bg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(74,155,114,0.15);
  background: white;
}

textarea.form-input {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-error {
  font-size: 0.73rem;
  color: #e05252;
  margin-top: 0.3rem;
  display: none;
}

.form-input:invalid:not(:placeholder-shown) + .form-error { display: block; }

.btn-submit {
  background: var(--accent);
  color: white;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-sm);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s var(--ease);
  letter-spacing: 0.02em;
}
.btn-submit:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 14px rgba(74,155,114,0.35);
  transform: translateY(-1px);
}

#result {
  font-size: 0.84rem;
  margin-top: 0.75rem;
  font-weight: 500;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }

  .sidebar {
    position: static;
    height: auto;
    padding: 1.75rem;
  }

  .show-contacts-btn { display: inline-block; }

  .contact-section,
  .social-section { display: none; }
  .contact-section.open,
  .social-section.open { display: block; }

  .main-content { padding: 1.75rem 1.25rem; }

  .pub-card { grid-template-columns: 1fr; }
  .pub-img { height: 180px; }

  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 500px) {
  .service-grid { grid-template-columns: 1fr; }
  .conf-grid { grid-template-columns: 1fr; }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.main-content {
  animation: fadeUp 0.45s var(--ease) both;
}