/* ============================================================
   Deepanshu Goel — Personal Website Styles
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=PT+Serif:ital,wght@0,400;0,700;1,400&display=swap');

/* ---------- Color palette (CSS variables for easy tweaking) ---------- */
:root {
  --primary: #1f4e79;        /* deep navy blue */
  --primary-light: #2c7bb8;  /* accent blue */
  --accent: #e8a33d;         /* warm gold accent */
  --bg: #fafafa;             /* off-white page background */
  --card-bg: #ffffff;        /* white cards */
  --text: #2c3338;           /* near-black body text */
  --text-muted: #5a6470;     /* secondary text */
  --border: #e3e6ea;         /* subtle borders */
  --shadow: 0 2px 8px rgba(31, 78, 121, 0.08);
  --shadow-hover: 0 6px 20px rgba(31, 78, 121, 0.15);
}

/* ---------- Base typography ---------- */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background-color: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'PT Serif', Georgia, serif;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: 2.4rem; margin-bottom: 1rem; }
h2 { font-size: 1.9rem; margin-top: 2rem; }
h3 { font-size: 1.4rem; margin-top: 1.5rem; }

p {
  margin-bottom: 1rem;
}

/* ---------- Links ---------- */
a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color 0.2s ease, border-bottom 0.2s ease;
  border-bottom: 1px solid transparent;
}

a:hover {
  color: var(--primary);
  border-bottom: 1px solid var(--primary);
  text-decoration: none;
}

/* ---------- Navbar customization ---------- */
.navbar {
  background-color: var(--primary) !important;
  border: none !important;
  box-shadow: var(--shadow);
  padding: 0.6rem 0;
}

.navbar-default .navbar-brand,
.navbar-default .navbar-nav > li > a {
  color: #ffffff !important;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

.navbar-default .navbar-brand {
  font-weight: 700;
  font-size: 1.15rem;
}

.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus {
  color: var(--accent) !important;
  background-color: transparent !important;
}

.navbar-default .navbar-nav > .active > a,
.navbar-default .navbar-nav > .active > a:hover,
.navbar-default .navbar-nav > .active > a:focus {
  background-color: rgba(255, 255, 255, 0.1) !important;
  color: #ffffff !important;
}

/* Font Awesome icons in navbar */
.navbar .fa {
  margin-right: 0.3rem;
}

/* ---------- Main content container ---------- */
.main-container {
  max-width: 960px;
  padding: 2rem 1.5rem 4rem;
}

/* ---------- Home page hero / two-column layout ---------- */
.columns {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  margin: 2rem 0 3rem;
  flex-wrap: wrap;
}

.column {
  flex: 1;
  min-width: 280px;
}

.column img {
  box-shadow: var(--shadow-hover);
  border: 4px solid #ffffff;
  width: 100%;
  height: auto;
  transition: transform 0.3s ease;
  /* Default: rectangular with rounded corners (works for gallery, etc.) */
  border-radius: 12px;
  max-width: 100%;
  object-fit: contain;
}

.column img:hover {
  transform: scale(1.03);
}

.column h2 {
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.5rem;
  display: inline-block;
  margin-top: 1rem;
}

/* Home page only: circular profile photo */
.home-page .column img {
  border-radius: 50%;
  max-width: 280px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- Projects page: card styling ---------- */
/* Style each project section as a card */
h3 {
  background-color: var(--card-bg);
  border-left: 4px solid var(--accent);
  padding: 1rem 1.2rem;
  border-radius: 6px;
  box-shadow: var(--shadow);
  margin-top: 2rem;
  margin-bottom: 0;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

h3:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

h3 a {
  color: var(--primary);
  border-bottom: none;
}

h3 a:hover {
  color: var(--primary-light);
  border-bottom: none;
}

/* Paragraphs that follow project headers */
h3 + p {
  background-color: var(--card-bg);
  padding: 0 1.2rem 1.2rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  border-radius: 0 0 6px 6px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--accent);
}

h3 + p + p {
  background-color: var(--card-bg);
  padding: 0 1.2rem 1.2rem;
  margin-top: -1.5rem;
  margin-bottom: 1.5rem;
  border-radius: 0 0 6px 6px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--accent);
}

/* ---------- Page title ---------- */
.title {
  color: var(--primary);
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.6rem;
  margin-bottom: 2rem;
  font-family: 'PT Serif', Georgia, serif;
}

/* ---------- Mobile responsiveness ---------- */
@media (max-width: 768px) {
  body {
    font-size: 15px;
  }

  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.2rem; padding: 0.8rem 1rem; }

  .columns {
    flex-direction: column;
    gap: 1.5rem;
  }

  .column {
    width: 100% !important;
    text-align: center !important;
    min-width: 0;
  }

  .column img {
    max-width: 220px;
  }

  .main-container {
    padding: 1rem 1rem 2rem;
  }

  .navbar-default .navbar-nav > li > a {
    padding: 0.6rem 1rem;
  }
}

/* ---------- Footer spacing ---------- */
footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
}

/* ---------- Subtle entrance animation ---------- */
.main-container {
  animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}