@charset "utf-8";

/* ============================================================
   MODERN PORTFOLIO DESIGN SYSTEM
   Dark-first, minimal, with gradient accents
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-bg: #0a0a0f;
  --color-bg-alt: #12121a;
  --color-surface: #1a1a25;
  --color-surface-hover: #22222f;
  --color-border: rgba(255, 255, 255, 0.06);
  --color-text: #e4e4e7;
  --color-text-muted: #9ca3af;
  --color-text-subtle: #6b7280;
  --color-heading: #ffffff;
  --color-accent: #818cf8;
  --color-accent-hover: #a5b4fc;
  --color-accent-subtle: rgba(129, 140, 248, 0.1);
  --color-accent-glow: rgba(129, 140, 248, 0.2);
  --gradient-accent: linear-gradient(135deg, #818cf8 0%, #c084fc 50%, #f472b6 100%);
  --gradient-surface: linear-gradient(135deg, rgba(129, 140, 248, 0.08) 0%, rgba(192, 132, 252, 0.04) 100%);
  --navbar-bg: rgba(10, 10, 15, 0.8);
  --media-icon-filter: brightness(0) invert(1);
  --hero-glow-1: rgba(129, 140, 248, 0.08);
  --hero-glow-2: rgba(192, 132, 252, 0.06);
  --btn-glow: rgba(129, 140, 248, 0.3);
  --btn-glow-hover: rgba(129, 140, 248, 0.45);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', var(--font-sans);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(129, 140, 248, 0.15);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Light Mode --- */
[data-theme="light"] {
  --color-bg: #f8f9fc;
  --color-bg-alt: #eef0f5;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f3f8;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-text: #1a1a2e;
  --color-text-muted: #4b5563;
  --color-text-subtle: #9ca3af;
  --color-heading: #111827;
  --color-accent: #6366f1;
  --color-accent-hover: #4f46e5;
  --color-accent-subtle: rgba(99, 102, 241, 0.08);
  --color-accent-glow: rgba(99, 102, 241, 0.15);
  --gradient-accent: linear-gradient(135deg, #6366f1 0%, #a855f7 50%, #ec4899 100%);
  --gradient-surface: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(168, 85, 247, 0.03) 100%);
  --navbar-bg: rgba(248, 249, 252, 0.85);
  --media-icon-filter: brightness(0) invert(0);
  --hero-glow-1: rgba(99, 102, 241, 0.06);
  --hero-glow-2: rgba(168, 85, 247, 0.04);
  --btn-glow: rgba(99, 102, 241, 0.25);
  --btn-glow-hover: rgba(99, 102, 241, 0.4);
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.1);
}

/* --- Global Reset & Base --- */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans) !important;
  background-color: var(--color-bg) !important;
  color: var(--color-text) !important;
  line-height: 1.7;
  letter-spacing: -0.01em;
  overflow-x: hidden;
}

::selection {
  background: rgba(129, 140, 248, 0.3);
  color: #fff;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display) !important;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--color-heading);
  line-height: 1.2;
}

h1 { font-size: 3.2rem; font-weight: 700; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.15rem; font-weight: 500; }
h5 { font-size: 1rem; font-weight: 600; }
h6 {
  font-family: var(--font-sans) !important;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0;
}

p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: none;
}

strong {
  color: var(--color-heading);
  font-weight: 600;
}

/* --- Navbar --- */
.navbar {
  background: var(--navbar-bg) !important;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  padding: 0.9rem 1.5rem !important;
  transition: all var(--transition-smooth);
  position: sticky;
  top: 0;
  z-index: 1030;
}

.navbar-brand {
  font-family: var(--font-display) !important;
  font-weight: 600 !important;
  font-size: 1.1rem !important;
  letter-spacing: -0.02em;
  color: var(--color-heading) !important;
  transition: opacity var(--transition-fast);
}

.navbar-brand:hover {
  opacity: 0.8;
  color: var(--color-heading) !important;
}

.nav-link {
  font-size: 0.9rem !important;
  font-weight: 400;
  color: var(--color-text-muted) !important;
  padding: 0.5rem 1rem !important;
  transition: color var(--transition-fast);
  letter-spacing: 0;
}

.nav-link:hover,
.nav-link:focus {
  color: var(--color-heading) !important;
}

.navbar-dark .navbar-toggler {
  border-color: var(--color-border);
}

.dropdown-menu {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius) !important;
  padding: 0.5rem !important;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
  margin-top: 0.5rem !important;
}

.dropdown-item {
  color: var(--color-text-muted) !important;
  font-size: 0.875rem;
  padding: 0.5rem 1rem !important;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background: var(--color-accent-subtle) !important;
  color: var(--color-heading) !important;
}

.dropdown-divider {
  border-top-color: var(--color-border) !important;
  margin: 0.3rem 0.5rem !important;
}

/* --- Hero / Jumbotron --- */
.jumbotron {
  background: var(--color-bg) !important;
  border-radius: 0 !important;
  padding: 6rem 2rem 4rem !important;
  margin-bottom: 0 !important;
  position: relative;
  overflow: hidden;
}

.jumbotron::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -25%;
  width: 150%;
  height: 150%;
  background: radial-gradient(ellipse at 30% 50%, var(--hero-glow-1) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, var(--hero-glow-2) 0%, transparent 60%);
  pointer-events: none;
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.05); }
}

.jumbotron h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.2rem;
  position: relative;
  z-index: 1;
}

.jumbotron p {
  font-size: 1.15rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-text-muted);
  position: relative;
  z-index: 1;
}

/* --- Buttons --- */
.btn-primary {
  background: var(--gradient-accent) !important;
  border: none !important;
  border-radius: 50px !important;
  padding: 0.75rem 2rem !important;
  font-family: var(--font-sans) !important;
  font-weight: 500 !important;
  font-size: 0.95rem !important;
  letter-spacing: 0;
  color: #fff !important;
  transition: all var(--transition-smooth) !important;
  box-shadow: 0 4px 20px var(--btn-glow);
  position: relative;
  z-index: 1;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--btn-glow-hover) !important;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline-dark {
  border-color: var(--color-border) !important;
  color: var(--color-text-muted) !important;
  border-radius: 50px !important;
  padding: 0.5rem 1.5rem !important;
  font-size: 0.85rem !important;
  font-weight: 500;
  transition: all var(--transition-fast) !important;
  background: transparent !important;
}

.btn-outline-dark:hover {
  background: var(--color-surface) !important;
  border-color: var(--color-accent) !important;
  color: var(--color-accent) !important;
}

/* --- Sections --- */
section {
  padding: 1rem 0;
}

/* Intro tagline section */
section .container > .row > .col-12.text-center > h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0.8rem;
}

/* --- Feature Cards (Design Thinker, etc.) --- */
.media {
  padding: 1.8rem;
  background: var(--color-surface);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  transition: all var(--transition-smooth);
  height: 100%;
}

.media:hover {
  border-color: var(--color-accent-glow);
  background: var(--color-surface-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.media img {
  filter: var(--media-icon-filter);
  opacity: 0.7;
}

/* Project sidebar: remove card container from metadata */
.bg-light .media {
  background: transparent;
  border: none;
  padding: 0;
}
.bg-light .media:hover {
  transform: none;
  box-shadow: none;
  background: transparent;
  border-color: transparent;
}

.media .media-body {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.media .media-body h5 {
  color: var(--color-heading);
  font-family: var(--font-display) !important;
  margin-bottom: 0.75rem !important;
}

.list-unstyled {
  margin-bottom: 0;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  padding-top: 0.25rem;
}

.project-tag {
  display: inline-block;
  background: var(--color-accent-subtle, rgba(99,102,241,0.1));
  color: var(--color-accent);
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

/* --- Project Thumbnails / Gallery --- */
a img {
  transition: all var(--transition-smooth) !important;
  border-radius: var(--radius);
  opacity: 1;
}

a img:hover {
  opacity: 0.85;
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}

/* Selected work section */
#work {
  font-size: 2.2rem;
  font-weight: 600;
  color: var(--color-heading);
  position: relative;
  display: inline-block;
}

/* Project cards in footer gallery */
.col-md-6 > a > img,
.col-md-3 > a > img {
  border-radius: var(--radius);
  transition: all var(--transition-smooth);
}

/* Thumbnail hover overlay */
.thumb-overlay {
  position: relative;
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
}

.thumb-overlay img {
  display: block;
  width: 100%;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth) !important;
}

.thumb-overlay .thumb-label {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0.75rem;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: #fff;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-smooth);
  pointer-events: none;
  border-radius: var(--radius);
}

.thumb-overlay:hover .thumb-label {
  opacity: 1;
}

.thumb-overlay:hover img {
  transform: scale(1.05);
  opacity: 1 !important;
}

/* Project titles under thumbnails */
.col-md-6 h4,
.col-md-3 h4 {
  font-size: 1.1rem;
  font-weight: 500;
  margin-top: 1rem;
  color: var(--color-heading);
}

.col-md-6 h6,
.col-md-3 h6 {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  font-weight: 400;
  margin-bottom: 1.5rem;
}

/* Grid dividers */
hr {
  border-top: 1px solid var(--color-border) !important;
  margin: 2rem 0;
}

/* --- Project Detail Pages --- */

/* Project title */
section .container > .row > .col-12 > h1.text-left {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  padding-bottom: 0.5rem;
}

/* Sidebar */
.bg-light {
  background: var(--color-surface) !important;
  border-radius: var(--radius) !important;
  border: 1px solid var(--color-border);
  padding: 1.5rem !important;
}

.bg-light .small,
.bg-light li {
  color: var(--color-text-muted) !important;
  font-size: 0.875rem;
  line-height: 1.8;
}

.sidedesc {
  background: var(--color-surface) !important;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
}

/* Project content */
.projectdesc,
p.projectdesc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.85;
}

h2.projectdesc {
  color: var(--color-heading);
  font-size: 1.8rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

h3.projectdesc {
  color: var(--color-heading);
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

/* Project layout: 32px gap between sidebar and content */
.bg-light + [class*="col-"] {
  padding-left: 32px;
}

/* Remove top margin from first content element so it aligns with sidebar */
h2.projectdesc:first-child,
h3.projectdesc:first-child,
p.projectdesc:first-child {
  margin-top: 0;
}

/* Figures & Media */
figure,
.figure {
  margin: 2rem 0;
  border-radius: var(--radius);
  overflow: hidden;
}

.figure-caption,
figcaption.figure-caption {
  color: var(--color-text-subtle) !important;
  font-size: 0.85rem;
  padding: 0.75rem 0;
  line-height: 1.6;
}

video,
.embed-responsive {
  border-radius: var(--radius);
  background: var(--color-surface);
}

img.img-fluid,
img.img-responsive {
  border-radius: var(--radius);
}

/* --- Footer --- */
footer,
#footbg {
  background: var(--color-bg-alt) !important;
  border-top: 1px solid var(--color-border);
  padding: 2rem 0 !important;
}

footer p {
  color: var(--color-text-subtle) !important;
  font-size: 0.85rem;
}

/* --- Utility Overrides --- */
.bg-dark {
  background: transparent !important;
}

.mt-2 {
  margin-top: 1.5rem !important;
}

.container {
  max-width: var(--content-width, 1100px);
}

/* --- Scroll Reveal Animation --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

/* Stagger delays for grid items */
.row > [class*="col-"]:nth-child(1) { animation-delay: 0s; }
.row > [class*="col-"]:nth-child(2) { animation-delay: 0.1s; }
.row > [class*="col-"]:nth-child(3) { animation-delay: 0.2s; }
.row > [class*="col-"]:nth-child(4) { animation-delay: 0.3s; }

/* --- Responsive --- */
@media (max-width: 768px) {
  .jumbotron {
    padding: 4rem 1.5rem 3rem !important;
  }

  .jumbotron h1 {
    font-size: 2rem;
  }

  h1 {
    font-size: 2.2rem;
  }

  .media {
    padding: 1.2rem;
  }

  .navbar {
    padding: 0.75rem 1rem !important;
  }

  section {
    padding: 0.5rem 0;
  }
}

@media (max-width: 480px) {
  .jumbotron h1 {
    font-size: 1.75rem;
  }

  .jumbotron p {
    font-size: 1rem;
  }

  .btn-primary {
    padding: 0.65rem 1.5rem !important;
    font-size: 0.9rem !important;
  }
}

/* --- Smooth Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-surface-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-subtle);
}

/* --- Focus styles for accessibility --- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Prevent FOUC on icon image --- */
.jumbotron .align-items-center img {
  max-width: 280px;
  margin: 2rem auto 0;
  display: block;
  filter: brightness(0.9) contrast(1.1);
  opacity: 0.8;
}

/* ============================================================
   RESUME PAGE
   ============================================================ */

.resume-section-title {
  font-family: var(--font-display) !important;
  font-size: 1.1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.resume-entry {
  margin-bottom: 2rem;
}

.resume-company {
  font-family: var(--font-display) !important;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-heading);
  margin-bottom: 0;
}

.resume-role {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  font-style: italic;
}

.resume-date {
  font-size: 0.85rem;
  color: var(--color-text-subtle);
  white-space: nowrap;
}

.resume-list {
  list-style: none;
  padding-left: 0;
  margin-top: 0.5rem;
}

.resume-list li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.resume-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-accent);
  opacity: 0.6;
}

.resume-skills {
  list-style: none;
  padding-left: 0;
  margin-bottom: 0;
}

.resume-skills li {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.resume-skills li:last-child {
  border-bottom: none;
}

.resume-skills li:hover {
  color: var(--color-heading);
}

@media (max-width: 768px) {
  .resume-company {
    font-size: 1.1rem;
  }

  .resume-date {
    display: block;
    margin-bottom: 0.5rem;
  }
}

/* ============================================================
   THEME TOGGLE
   ============================================================ */

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-left: 0.5rem;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: var(--color-accent-subtle);
  transform: scale(1.08);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-spring), opacity var(--transition-fast);
}

.theme-toggle .icon-sun {
  display: none;
}

.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

/* Light mode: override navbar toggler for visibility */
[data-theme="light"] .navbar-dark .navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 0, 0, 0.5)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

[data-theme="light"] .navbar-dark .navbar-toggler {
  border-color: rgba(0, 0, 0, 0.1);
}

/* Light mode: selection color */
[data-theme="light"] ::selection {
  background: rgba(99, 102, 241, 0.2);
  color: #111827;
}

/* Light mode: scrollbar */
[data-theme="light"] ::-webkit-scrollbar-track {
  background: var(--color-bg);
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
  background: #d1d5db;
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
  background: #9ca3af;
}

/* Smooth dissolve on theme change — applied via class to avoid interfering with page load */
html.theme-transitioning,
html.theme-transitioning *,
html.theme-transitioning *::before,
html.theme-transitioning *::after {
  transition: background-color 300ms ease,
              color 300ms ease,
              border-color 300ms ease,
              box-shadow 300ms ease,
              fill 300ms ease,
              stroke 300ms ease,
              opacity 300ms ease !important;
}