/* ===========================
   ROOT VARIABLES & RESET
   =========================== */
:root {
  --bg:        #0d1b2a;
  --bg-alt:    #0a1520;
  --card:      #162032;
  --card-hover:#1c2d44;
  --accent:    #c9a227;
  --accent-hover:#e8c547;
  --accent-light:rgba(201,162,39,0.12);
  --text:      #e8edf2;
  --text-muted:#8a9ab0;
  --border:    #1e3050;
  --font:      'Inter', sans-serif;
  --radius:    12px;
  --shadow:    0 4px 24px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --glow:      0 0 20px rgba(201,162,39,0.25);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ===========================
   CONTAINERS & SECTIONS
   =========================== */
.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 40px;
  position: relative;
  display: inline-block;
  color: var(--text);
  line-height: 1.2;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 48px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

/* ===========================
   NAVBAR
   =========================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(13, 27, 42, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, box-shadow 0.3s;
}

.navbar.scrolled {
  background: rgba(13, 27, 42, 0.98);
  box-shadow: 0 1px 8px rgba(0,0,0,0.3);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 2px;
}

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
  letter-spacing: 0.5px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-resume {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  background: var(--accent);
  color: #0d1b2a !important;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

.nav-resume:hover {
  background: var(--accent-hover);
  color: #0d1b2a;
  transform: translateY(-1px);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   HERO
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 100px 24px 60px;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  max-width: 700px;
}

.hero-photo-wrapper {
  position: relative;
  width: 180px;
  height: 180px;
}

.hero-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--accent);
  box-shadow: var(--glow);
}

.hero-initials {
  display: none;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 3px solid rgba(201,162,39,0.4);
  background: var(--card);
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.hero-name {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -1px;
  line-height: 1.1;
  color: var(--text);
}

.hero-title {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-top: 8px;
  line-height: 1.5;
}

.hero-chips {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

.chip {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.chip i { width: 14px; height: 14px; }

.hero-buttons {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 8px;
}

/* ===========================
   BUTTONS
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn i { width: 16px; height: 16px; }

.btn-primary {
  background: var(--accent);
  color: #0d1b2a;
}

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 12px rgba(201,162,39,0.4);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--card);
  color: var(--accent);
  border: 1px solid var(--accent);
}

.btn-secondary:hover {
  background: rgba(201,162,39,0.1);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--text-muted);
  color: var(--text);
  transform: translateY(-1px);
}

/* ===========================
   BADGES & TAGS
   =========================== */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}

.badge-gold {
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid rgba(201,162,39,0.3);
}

.badge-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.date-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--accent-light);
  color: var(--accent);
  white-space: nowrap;
}

.tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  background: var(--card);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

/* ===========================
   ABOUT
   =========================== */
.about-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.about-card p strong { color: var(--text); }

/* ===========================
   EDUCATION
   =========================== */
.edu-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
}

.edu-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.edu-school {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.edu-degree {
  color: var(--accent);
  font-weight: 500;
  font-size: 1rem;
}

.edu-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.coursework-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 4px;
}

/* ===========================
   SKILLS
   =========================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.skill-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.skill-card:hover {
  border-color: rgba(201,162,39,0.4);
  box-shadow: var(--glow);
}

.skill-icon {
  margin-bottom: 12px;
  color: var(--accent);
}

.skill-icon i {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
}

.skill-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text);
}

.skill-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skill-card ul li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
}

.skill-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

/* ===========================
   PROJECTS — CARDS
   =========================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: rgba(201,162,39,0.4);
  transform: translateY(-4px);
  box-shadow: var(--glow);
}

.card-image {
  width: 100%;
  height: 160px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  flex-shrink: 0;
}

.card-lazy-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.card-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4px;
}

.course-tag {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.35;
  margin: 0;
}

.card-summary {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.card-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-top: auto;
}

.card-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.card-stat-value {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  line-height: 1;
  text-shadow: 0 2px 12px rgba(0,0,0,0.5);
}

.card-stat-label {
  font-size: 0.65rem;
  font-weight: 700;
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  text-align: center;
}

.skill-pill {
  font-size: 0.68rem;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid rgba(201,162,39,0.2);
  font-weight: 500;
}

/* ===========================
   MODAL
   =========================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px);
  transition: transform 0.25s ease;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}

.modal-overlay.active .modal-box {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s;
  z-index: 1;
}

.modal-close:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.modal-image {
  width: 100%;
  height: 240px;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  border-radius: var(--radius) var(--radius) 0 0;
  flex-shrink: 0;
}

.modal-content {
  padding: 28px 32px 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.modal-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.modal-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin: 0;
}

.modal-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal-bullets li {
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.modal-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.modal-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.modal-attachments {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.modal-attachments-label {
  width: 100%;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.attach-link {
  font-size: 0.78rem;
  color: var(--accent);
  border: 1px solid rgba(201,162,39,0.3);
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.2s;
  white-space: nowrap;
  cursor: pointer;
  background: none;
}

.attach-link:hover {
  background: var(--accent-light);
}

/* ===========================
   FILE VIEWER
   =========================== */
.viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.9);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.viewer-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.viewer-box {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 1200px;
  height: 96vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 60px rgba(0,0,0,0.6);
}

.viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--card);
}

.viewer-filename {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.viewer-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.viewer-open,
.viewer-download {
  font-size: 0.8rem;
  font-weight: 600;
  color: #0d1b2a;
  background: var(--accent);
  padding: 7px 16px;
  border-radius: 6px;
  transition: background 0.2s;
  white-space: nowrap;
}

.viewer-open {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.viewer-open:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.viewer-download:hover {
  background: var(--accent-hover);
}

.viewer-close {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s, border-color 0.2s;
}

.viewer-close:hover {
  color: var(--text);
  border-color: var(--text-muted);
}

.viewer-body {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-alt);
  border-radius: 0 0 var(--radius) var(--radius);
  position: relative;
  -webkit-overflow-scrolling: touch;
}

.viewer-body iframe {
  width: 100%;
  height: 100%;
  min-height: 100%;
  border: none;
  background: #fff;
  display: block;
}

.viewer-body img {
  max-width: calc(100% - 48px);
  max-height: calc(100% - 48px);
  object-fit: contain;
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
}

.viewer-media {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.viewer-image-stage {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  touch-action: none;
}

.viewer-zoom-image {
  max-width: calc(100% - 48px);
  max-height: calc(100% - 48px);
  object-fit: contain;
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
  transform-origin: center center;
  will-change: transform;
  cursor: grab;
  user-select: none;
}

.viewer-zoom-image.is-dragging {
  cursor: grabbing;
}

.viewer-image-controls {
  position: absolute;
  right: 16px;
  bottom: 16px;
  display: flex;
  gap: 8px;
  z-index: 2;
}

.viewer-image-btn {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.16);
  background: rgba(10, 21, 32, 0.86);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
}

.viewer-image-btn:hover {
  border-color: rgba(201,162,39,0.45);
  color: var(--accent);
}

.viewer-image-btn i {
  width: 18px;
  height: 18px;
}

.viewer-image-hint {
  position: absolute;
  left: 16px;
  bottom: 16px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(10, 21, 32, 0.86);
  border: 1px solid rgba(255,255,255,0.1);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 500;
  backdrop-filter: blur(10px);
}

.viewer-image-hint i {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.viewer-pdf-frame {
  width: 100%;
  min-height: 100%;
  height: 100%;
  overflow: auto;
  background: #5f6670;
}

.viewer-pdf-frame iframe {
  min-height: 1200px;
}

.viewer-no-preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  text-align: center;
  padding: 48px;
}

.viewer-no-preview p { font-size: 0.95rem; }

/* ===========================
   MOBILE VIEWER
   =========================== */
.mobile-viewer-overlay {
  position: fixed;
  inset: 0;
  z-index: 3200;
  background: rgba(3, 10, 18, 0.92);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.mobile-viewer-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-viewer-sheet {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  background:
    radial-gradient(circle at top, rgba(201,162,39,0.1), transparent 26%),
    linear-gradient(180deg, #09111d 0%, #050a12 100%);
  transform: translateY(16px);
  transition: transform 0.25s ease;
}

.mobile-viewer-overlay.active .mobile-viewer-sheet {
  transform: translateY(0);
}

.mobile-viewer-header {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: max(16px, env(safe-area-inset-top)) 16px 14px;
  background: linear-gradient(180deg, rgba(9,17,29,0.98) 0%, rgba(9,17,29,0.94) 100%);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(18px);
}

.mobile-viewer-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mobile-viewer-kicker {
  font-size: 0.72rem;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.mobile-viewer-meta {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 10px;
}

.mobile-viewer-filename {
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
}

.mobile-viewer-type {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.mobile-viewer-actions {
  display: flex;
  gap: 10px;
  margin-top: 14px;
}

.mobile-viewer-open,
.mobile-viewer-download {
  flex: 1;
  min-height: 46px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 700;
}

.mobile-viewer-open {
  border: 1px solid var(--border);
  color: var(--text);
  background: rgba(255,255,255,0.03);
}

.mobile-viewer-download {
  background: var(--accent);
  color: #0d1b2a;
}

.mobile-viewer-close {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.mobile-viewer-close i,
.mobile-viewer-open i,
.mobile-viewer-download i {
  width: 18px;
  height: 18px;
}

.mobile-viewer-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  -webkit-overflow-scrolling: touch;
}

.mobile-viewer-loading,
.mobile-viewer-empty {
  min-height: 220px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  text-align: center;
  padding: 32px 20px;
}

.mobile-viewer-loading::before {
  content: '';
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 3px solid rgba(201,162,39,0.16);
  border-top-color: var(--accent);
  animation: mobile-viewer-spin 0.8s linear infinite;
}

.mobile-doc-stack {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.mobile-doc-page {
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 18px 50px rgba(0,0,0,0.35);
}

.mobile-doc-page canvas {
  width: 100%;
  height: auto;
  display: block;
}

.mobile-doc-page-label {
  padding: 8px 12px;
  background: #f4f6f8;
  color: #475569;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.7px;
  text-transform: uppercase;
}

.mobile-image-stage {
  position: relative;
  flex: 1;
  min-height: min(62vh, 560px);
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  overflow: hidden;
  touch-action: none;
}

.mobile-image-canvas {
  width: 100%;
  height: 100%;
  display: block;
  overflow: hidden;
}

.mobile-zoom-canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: grab;
}

.mobile-zoom-canvas.is-dragging {
  cursor: grabbing;
}

.mobile-image-hint {
  position: absolute;
  left: 14px;
  bottom: 14px;
  right: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 14px;
  background: rgba(5,10,18,0.8);
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text-muted);
  font-size: 0.78rem;
  backdrop-filter: blur(12px);
}

.mobile-image-hint i {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

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

/* ===========================
   EXPERIENCE TIMELINE
   =========================== */
.timeline {
  position: relative;
  padding-left: 32px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: -29px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 8px rgba(201,162,39,0.5);
}

.timeline-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.timeline-content:hover {
  border-color: rgba(201,162,39,0.4);
  box-shadow: var(--glow);
}

.timeline-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.timeline-content h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.timeline-company {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 500;
}

.timeline-content ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-content ul li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  line-height: 1.6;
}

.timeline-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

/* ===========================
   EXTRACURRICULAR
   =========================== */
.extra-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.extra-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.extra-card:hover {
  border-color: rgba(201,162,39,0.4);
  box-shadow: var(--glow);
}

.extra-icon {
  flex-shrink: 0;
  color: var(--accent);
}

.extra-icon i {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
}

.extra-body {
  flex: 1;
}

.extra-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.extra-header h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.extra-body p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ===========================
   CONTACT
   =========================== */
.contact-intro {
  color: var(--text-muted);
  margin-bottom: 40px;
  font-size: 1.05rem;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.contact-card:not(.contact-card-plain):hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--glow);
}

.contact-icon {
  color: var(--accent);
}

.contact-icon i {
  width: 28px;
  height: 28px;
  stroke-width: 1.5;
}

.contact-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.contact-value {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
  word-break: break-all;
}

/* ===========================
   FOOTER
   =========================== */
.footer {
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 48px 24px 28px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-inner {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.footer-links {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-socials {
  display: flex;
  gap: 16px;
  align-items: center;
}

.footer-socials a {
  color: var(--text-muted);
  transition: color 0.2s;
}

.footer-socials a i {
  width: 20px;
  height: 20px;
}

.footer-socials a:hover {
  color: var(--accent);
}

.footer-copy {
  color: rgba(156,163,175,0.5);
  font-size: 0.8rem;
}

/* ===========================
   BACK TO TOP
   =========================== */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #0d1b2a;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 900;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.3s, transform 0.3s, background 0.2s;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 16px rgba(201,162,39,0.4);
}

.back-to-top i {
  width: 20px;
  height: 20px;
}

/* ===========================
   SCROLL ANIMATIONS
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: 0.08s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: 0.16s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: 0.24s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: 0.32s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: 0.4s; }
.stagger-children.visible > *:nth-child(7) { transition-delay: 0.48s; }
.stagger-children.visible > *:nth-child(8) { transition-delay: 0.56s; }
.stagger-children.visible > *:nth-child(9) { transition-delay: 0.64s; }
.stagger-children.visible > *:nth-child(10) { transition-delay: 0.72s; }

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

  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    width: 100%;
    flex-direction: column;
    background: rgba(13, 27, 42, 0.98);
    border-top: 1px solid var(--border);
    padding: 20px 24px;
    gap: 20px;
  }

  .nav-links.open { display: flex; }

  .nav-resume {
    align-self: stretch;
    justify-content: center;
    width: 100%;
    padding: 12px 18px;
    border-radius: 10px;
  }

  .section { padding: 60px 0; }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .edu-header, .timeline-header, .extra-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .about-card { padding: 24px; }
  .edu-card   { padding: 24px; }
  .skill-card { padding: 24px; }
  .project-card  { padding: 0; }
  .card-image { height: 180px; }
  .card-body { padding: 18px; }
  .timeline-content { padding: 20px; }

  .footer-links { gap: 16px; }

  /* Contact grid — 2 columns on tablet */
  .contact-grid { grid-template-columns: repeat(2, 1fr); }

  /* Modal mobile */
  .modal-content { padding: 20px 20px 24px; }
  .modal-image { height: 180px; }
  .modal-title { font-size: 1.15rem; }

  /* Viewer mobile */
  .viewer-box { height: 100vh; max-height: 100vh; border-radius: 0; }
  .viewer-header { padding: 10px 14px; }
  .viewer-actions { gap: 8px; }
  .viewer-open,
  .viewer-download { padding: 9px 12px; font-size: 0.75rem; }
  .viewer-body { align-items: stretch; }
  .viewer-pdf-frame iframe { min-height: 1400px; }
  .mobile-viewer-body { padding-bottom: calc(16px + env(safe-area-inset-bottom)); }

  /* Touch targets for nav links */
  .nav-links a {
    padding: 8px 0;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  .nav-resume { min-height: 48px; }
  .attach-link { padding: 10px 14px; min-height: 44px; display: inline-flex; align-items: center; }
}

@media (max-width: 480px) {
  .hero-name { font-size: 2rem; }
  .section-title { font-size: 1.6rem; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .card-image { height: 160px; }
  .card-body { padding: 16px; }
  .hero-buttons .btn {
    width: 100%;
    max-width: 260px;
    margin: 0 auto;
    text-align: center;
    justify-content: center;
    padding: 12px 20px;
  }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 375px) {

  /* Layout tightening */
  .container { padding: 0 16px; }
  .section { padding: 44px 0; }
  .section-title { font-size: 1.4rem; margin-bottom: 28px; }

  /* Hero — smaller photo and tighter spacing */
  .hero { padding: 80px 16px 40px; }
  .hero-content { gap: 20px; }
  .hero-photo-wrapper,
  .hero-photo,
  .hero-initials {
    width: 130px;
    height: 130px;
  }
  .hero-initials { font-size: 2.2rem; }
  .hero-greeting { font-size: 1rem; }
  .hero-title { font-size: 0.95rem; }
  .hero-buttons .btn {
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  /* Skills — force single column */
  .skills-grid { grid-template-columns: 1fr; }
  .skill-card { padding: 20px; }

  /* About & Education cards */
  .about-card {
    padding: 18px;
    font-size: 0.95rem;
    line-height: 1.7;
  }
  .edu-card { padding: 18px; }
  .edu-school { font-size: 1.05rem; }
  .tags { gap: 6px; }
  .tag { padding: 3px 10px; font-size: 0.75rem; }

  /* Timeline */
  .timeline { padding-left: 24px; gap: 28px; }
  .timeline::before { left: 5px; }
  .timeline-dot {
    left: -22px;
    width: 12px;
    height: 12px;
  }
  .timeline-content { padding: 16px; }
  .timeline-content h3 { font-size: 1rem; }
  .timeline-content ul li { font-size: 0.85rem; }

  /* Extra cards */
  .extra-card { padding: 20px; gap: 14px; }
  .extra-icon i { width: 22px; height: 22px; }

  /* Modal */
  .modal-overlay { padding: 10px; }
  .modal-content { padding: 16px 16px 20px; }
  .modal-image { height: 140px; }
  .modal-title { font-size: 1.05rem; }
  .modal-bullets li { font-size: 0.82rem; }
  .modal-close { width: 36px; height: 36px; }

  /* File Viewer */
  .viewer-box { height: 88vh; border-radius: 8px; }
  .viewer-header { padding: 8px 12px; flex-wrap: wrap; }
  .viewer-filename { font-size: 0.78rem; min-width: 0; flex: 1; }
  .viewer-actions { width: 100%; justify-content: space-between; }
  .viewer-open,
  .viewer-download {
    flex: 1;
    justify-content: center;
    min-height: 40px;
  }
  .viewer-close { width: 40px; height: 40px; flex-shrink: 0; }
  .viewer-image-controls {
    right: 12px;
    bottom: 12px;
  }
  .viewer-image-hint {
    left: 12px;
    bottom: 12px;
    max-width: calc(100% - 124px);
    font-size: 0.72rem;
  }
  .viewer-zoom-image {
    max-width: calc(100% - 24px);
    max-height: calc(100% - 24px);
  }
  .viewer-no-preview { padding: 24px; }
  .mobile-viewer-actions {
    flex-direction: column;
  }
  .mobile-image-stage {
    min-height: 52vh;
  }
}

/* ===========================
   PRINT
   =========================== */
@media print {
  *, *::before, *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
    border-color: #ccc !important;
  }

  body { font-size: 11pt; line-height: 1.5; }

  .navbar,
  .back-to-top,
  .hero-buttons,
  .hamburger,
  .modal-overlay,
  .viewer-overlay,
  .mobile-viewer-overlay,
  .footer-socials { display: none !important; }

  .hero {
    min-height: auto;
    padding: 24px 0;
    opacity: 1 !important;
    transform: none !important;
  }

  .hero-photo-wrapper { width: 100px; height: 100px; }
  .hero-photo { width: 100px; height: 100px; }

  .section { padding: 24px 0; }

  .fade-in {
    opacity: 1 !important;
    transform: none !important;
  }

  .stagger-children > * {
    opacity: 1 !important;
    transform: none !important;
  }

  .projects-grid { grid-template-columns: repeat(2, 1fr); }

  .card-image { height: 100px; print-color-adjust: exact; -webkit-print-color-adjust: exact; }

  .project-card,
  .skill-card,
  .edu-card,
  .about-card,
  .timeline-content,
  .extra-card,
  .contact-card { break-inside: avoid; }

  a[href]::after { content: none; }

  .footer { padding: 16px 0; }
}