/* ==========================================================================
   shared.css
   Common styles for desigNIKA portfolio.
   Loaded on every page alongside Tailwind CSS (CDN).
   ========================================================================== */

/* ---------- Custom Properties ---------- */

:root {
  --color-bg: #f5f5f5;
  --color-text: #1a1a1a;
  --color-text-secondary: #666666;
  --color-accent: #6B3E3E;
  --color-border: #e0e0e0;
  --color-card-bg: #ffffff;
  --color-header-bg: #ffffff;
  --color-footer-bg: #ffffff;
  --color-tag-bg: #e5e7eb;
  --color-tag-text: #4b5563;
  --noise-opacity: 0.4;
}

/* ---------- Base ---------- */

html {
  background-color: var(--color-bg);
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* SVG noise paper texture */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.15'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

/* Typography hierarchy */
h1 { font-size: 48px; font-weight: 700; line-height: 1.1; }
h2 { font-size: 36px; font-weight: 600; line-height: 1.2; }
h3 { font-size: 24px; font-weight: 500; line-height: 1.3; }

@media (max-width: 768px) {
  h1 { font-size: 36px; }
  h2 { font-size: 28px; }
  h3 { font-size: 20px; }
}

/* ---------- Dark Mode (applied to <html>) ---------- */

.dark-mode {
  --color-bg: #1a1a1a;
  --color-text: #e8e8e8;
  --color-text-secondary: #aaaaaa;
  --color-accent: #9B6B6B;
  --color-border: #333333;
  --color-card-bg: #252525;
  --color-header-bg: #252525;
  --color-footer-bg: #141414;
  --color-tag-bg: #374151;
  --color-tag-text: #f3f4f6;
  --noise-opacity: 0.25;
}

.dark-mode {
  background-color: var(--color-bg);
  color: var(--color-text);
}

.dark-mode body {
  background-color: var(--color-bg);
  color: var(--color-text);
}

/* Tailwind utility overrides */
.dark-mode .text-black        { color: var(--color-text) !important; }
.dark-mode .bg-white          { background-color: var(--color-card-bg) !important; }
.dark-mode .bg-gray-50        { background-color: var(--color-card-bg) !important; }
.dark-mode .bg-gray-100       { background-color: #333 !important; }
.dark-mode .bg-gray-200       { background-color: #333 !important; }
.dark-mode .border-gray-200   { border-color: var(--color-border) !important; }
.dark-mode .text-gray-500     { color: var(--color-text-secondary) !important; }
.dark-mode .text-gray-600,
.dark-mode .text-gray-800     { color: var(--color-text) !important; }

/* Header */
.dark-mode header             { background-color: var(--color-header-bg) !important; }
.dark-mode .menu-toggle span,
.dark-mode header .bg-black   { background-color: var(--color-text) !important; }

/* Navigation */
.dark-mode #menuOverlay       { background-color: var(--color-bg) !important; color: var(--color-text) !important; }

/* Footer */
.dark-mode footer             { background-color: var(--color-footer-bg) !important; }
.dark-mode footer p           { color: var(--color-text) !important; }
.dark-mode footer .text-gray-500 { color: var(--color-text-secondary) !important; }

/* Project tags */
.dark-mode .project-tag       { background-color: var(--color-tag-bg); color: var(--color-tag-text); }

/* Project card image containers */
.dark-mode .project-image-container { background-color: var(--color-card-bg) !important; }

/* Back to top button */
.dark-mode #backToTop         { background-color: var(--color-text) !important; color: var(--color-bg) !important; }

/* Gallery artwork text */
.dark-mode .artwork-title     { color: var(--color-text); }
.dark-mode .artwork-meta      { color: var(--color-text-secondary); }
.dark-mode .artwork-caption   { color: #ccc; }
.dark-mode .artwork img       { border-color: var(--color-border); background-color: var(--color-card-bg); }

/* Avatar circle border */
.dark-mode .avatar-circle     { border-color: var(--color-text); }

/* Profile page */
.dark-mode .profile-pic       { border-color: #555; }
.dark-mode .resume-link       { color: var(--color-accent); }

/* ---------- Logo ---------- */

.logo-container {
  position: relative;
  width: 60px;
  height: 60px;
}

.logo,
.logo-hover {
  position: absolute;
  width: 100%;
  height: 100%;
  transition: opacity 0.3s ease;
}

.logo-hover {
  opacity: 0;
}

.logo-container:hover .logo {
  opacity: 0;
}

.logo-container:hover .logo-hover {
  opacity: 1;
}

/* ---------- Desktop Nav ---------- */

.desktop-nav a {
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text);
  transition: color 0.3s ease;
  position: relative;
}

.desktop-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width 0.3s ease;
}

.desktop-nav a:hover {
  color: var(--color-accent);
}

.desktop-nav a:hover::after {
  width: 100%;
}

.dark-mode .desktop-nav a       { color: var(--color-text); }
.dark-mode .desktop-nav a:hover { color: var(--color-accent); }

/* ---------- Mobile Menu Overlay ---------- */

.menu-overlay {
  transition: all 0.3s ease;
  transform: translateX(100%);
}

.menu-overlay.active {
  transform: translateX(0);
}

/* ---------- Back to Top ---------- */

#backToTop {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--color-text);
  color: var(--color-bg);
  padding: 10px 14px;
  border-radius: 9999px;
  cursor: pointer;
  display: none;
  font-size: 14px;
  z-index: 100;
  transition: opacity 0.3s ease;
}

/* ---------- Hero ---------- */

.avatar-circle {
  display: inline-block;
  width: 1.5em;
  height: 1.5em;
  border-radius: 50%;
  overflow: hidden;
  vertical-align: middle;
  margin: 0 0.2em;
  border: 2px solid var(--color-text);
}

.avatar-circle img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-heading {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}

.hero-welcome {
  font-family: 'Inter', sans-serif;
  font-weight: 300;
}

/* ---------- Project Cards ---------- */

.project-tag {
  background-color: var(--color-tag-bg);
  color: var(--color-tag-text);
}

.project-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.project-card:hover {
  transform: scale(1.01);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}

.dark-mode .project-card {
  border-color: var(--color-border);
}

.dark-mode .project-card:hover {
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.project-image-container {
  height: 12rem;
  width: 100%;
  overflow: hidden;
  background-color: #f9fafb;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.project-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.projects-label {
  font-size: 0.875rem;
  line-height: 1.25rem;
}

@media (min-width: 768px) {
  .projects-label {
    font-size: 1rem;
    line-height: 1.5rem;
  }
}

/* Project description: hidden by default, revealed on card hover */
.project-description {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease;
}

.project-card:hover .project-description {
  max-height: 300px;
  opacity: 1;
}

@media (max-width: 768px) {
  .project-description {
    max-height: none;
    opacity: 1;
  }
}

/* ---------- Case Study Pages ---------- */

.toc-link {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  transition: all 0.3s ease;
}

.toc-link:hover {
  transform: translateX(5px);
}

.toc-link.active {
  color: var(--color-accent);
  font-weight: 700;
}

.dark-mode .toc-link.active {
  color: var(--color-accent);
}

/* Case study section headings (Spark, Build, Launch) */
.case-study-section-heading {
  color: var(--color-accent);
}

/* ---------- Project Navigation ---------- */

.project-nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
}

.project-nav-link {
  display: flex;
  flex-direction: column;
  transition: color 0.3s ease;
}

.project-nav-link:hover .project-nav-name {
  color: var(--color-accent);
}

.project-nav-next {
  text-align: right;
  margin-left: auto;
}

.project-nav-label {
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #888;
}

.project-nav-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 0.25rem;
  transition: color 0.3s ease;
}

.dark-mode .project-nav-inner {
  border-color: var(--color-border);
}

.dark-mode .project-nav-label {
  color: var(--color-text-secondary);
}

.dark-mode .project-nav-name {
  color: var(--color-text);
}

.dark-mode .project-nav-link:hover .project-nav-name {
  color: var(--color-accent);
}

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
}

footer p {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* ---------- About Page ---------- */

.profile-pic {
  width: 140px;
  height: 140px;
  border-radius: 9999px;
  border: 2.5px solid #e3e3e3;
  object-fit: cover;
}

.resume-link {
  color: var(--color-accent);
}

.resume-link:hover {
  text-decoration: underline;
}
