/* ============================================
   AISHWARYA SIVAKUMAR PORTFOLIO
   Main Stylesheet
   ============================================ */

/* --- Google Fonts imported in HTML head --- */

/* === CSS VARIABLES === */
:root {
  /* Primary */
  --bg-white: #FFFFFF;
  --bg-shell: #F7F3EE;
  --text-primary: #2D2D2D;
  --text-secondary: #7A7A7A;

  /* Accent */
  --tangerine: #E8713A;
  --tangerine-hover: #D0612E;
  --tangerine-ghost-hover: #FFF8F3;
  --tangerine-tag-bg: #FFF0E5;
  --tangerine-tag-text: #A04A1A;

  /* Project accents */
  --jade: #2AA89A;
  --jade-tag-bg: #E0F5F0;
  --jade-tag-text: #1A6A5E;
  --marigold: #E0A632;
  --marigold-tag-bg: #FFF6E0;
  --marigold-tag-text: #8A6810;
  --ocean: #4889C8;
  --ocean-tag-bg: #E8F0FC;
  --ocean-tag-text: #2A5A98;
  --orchid: #B85B92;
  --orchid-tag-bg: #F8E8F2;
  --orchid-tag-text: #7A3060;
  --slate: #5A7A8A;
  --slate-tag-bg: #E4EDF2;
  --slate-tag-text: #2A4A5A;

  /* Footer */
  --footer-bg: #1E3A5F;
  --footer-text: #E0E8F0;
  --footer-text-light: #8AA4C0;

  /* Typography */
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;

  /* Spacing */
  --nav-height: 64px;
  --section-padding: 100px;
  --container-max: 1100px;
  --container-narrow: 860px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-white);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* === UTILITY === */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding: 0 2rem;
}

/* === NAVIGATION === */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: box-shadow 0.3s ease;
}

.nav.scrolled {
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.06);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo img {
  height: 36px;
  width: 36px;
  object-fit: contain;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  position: relative;
  padding: 4px 0;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  right: 50%;
  height: 2px;
  background: var(--tangerine);
  transition: left 0.3s ease, right 0.3s ease;
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  left: 0;
  right: 0;
}

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

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

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav panel */
.nav-mobile {
  position: fixed;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100vh;
  background: var(--bg-white);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2.5rem;
  transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-mobile.open {
  left: 0;
}

.nav-mobile a {
  font-family: var(--font-heading);
  font-size: 28px;
  font-weight: 400;
  color: var(--text-primary);
  transition: color 0.3s ease;
}

.nav-mobile a:hover {
  color: var(--tangerine);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
}

.btn-primary {
  background: var(--tangerine);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--tangerine-hover);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--tangerine);
  border: 1.5px solid var(--tangerine);
}

.btn-ghost:hover {
  background: var(--tangerine-ghost-hover);
}

/* === SECTION LABEL === */
.section-label {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 2rem;
}

.section-label span {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--tangerine);
  white-space: nowrap;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(232, 113, 58, 0.25);
}

/* === TAGS === */
.tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 20px;
}

.tag-tangerine { background: var(--tangerine-tag-bg); color: var(--tangerine-tag-text); }
.tag-jade { background: var(--jade-tag-bg); color: var(--jade-tag-text); }
.tag-marigold { background: var(--marigold-tag-bg); color: var(--marigold-tag-text); }
.tag-ocean { background: var(--ocean-tag-bg); color: var(--ocean-tag-text); }
.tag-orchid { background: var(--orchid-tag-bg); color: var(--orchid-tag-text); }
.tag-slate { background: var(--slate-tag-bg); color: var(--slate-tag-text); }

/* === TOGGLE SWITCH === */
.toggle-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 3rem;
}

.toggle {
  display: inline-flex;
  background: var(--bg-shell);
  border-radius: 8px;
  padding: 4px;
  gap: 4px;
}

.toggle-btn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 10px 28px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  background: transparent;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.toggle-btn.active {
  background: var(--tangerine);
  color: #FFFFFF;
}

/* === CARDS === */
.card {
  background: var(--bg-white);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.card-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: contain;
  background: var(--bg-shell);
  padding: 12px;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* === FOOTER === */
.footer-cta {
  background: var(--tangerine);
  border-radius: 16px;
  padding: 36px 2rem;
  text-align: center;
  max-width: 600px;
  margin: 60px auto -30px;
  position: relative;
  z-index: 10;
}

.footer-cta h3 {
  font-family: var(--font-heading);
  font-size: clamp(22px, 2.5vw, 28px);
  font-weight: 400;
  color: #FFFFFF;
  margin-bottom: 6px;
}

.footer-cta p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 20px;
}

.footer-cta .btn {
  background: #FFFFFF;
  color: var(--tangerine);
  font-weight: 600;
}

.footer-cta .btn:hover {
  background: #f5f5f5;
}

.footer {
  background: var(--footer-bg);
  padding-top: 60px;
  padding-bottom: 0;
}

.footer-body {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 2rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.footer-name {
  font-family: var(--font-heading);
  font-size: 24px;
  font-weight: 400;
  color: var(--footer-text);
  margin-bottom: 6px;
}

.footer-name .s-italic {
  font-style: italic;
  color: var(--tangerine);
}

.footer-tagline {
  font-size: 14px;
  color: var(--footer-text-light);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.footer-socials {
  display: flex;
  gap: 10px;
}

.footer-socials a {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--footer-text);
  font-size: 14px;
  transition: background 0.3s ease;
}

.footer-socials a:hover {
  background: var(--tangerine);
  color: #FFFFFF;
}

.footer-right {
  text-align: right;
}

.footer-email {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--tangerine);
  display: block;
  margin-bottom: 1.5rem;
  transition: opacity 0.3s ease;
}

.footer-email:hover {
  opacity: 0.8;
}

.footer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: flex-end;
}

.footer-nav a {
  font-size: 14px;
  color: var(--footer-text);
  transition: color 0.3s ease;
}

.footer-nav a:hover {
  color: var(--tangerine);
}

.footer-bottom {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 1.5rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--footer-text-light);
}

/* === ANIMATIONS === */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  :root {
    --nav-height: 56px;
    --section-padding: 64px;
  }

  .nav-links {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .container, .container-narrow {
    padding: 0 1.25rem;
  }

  .footer-body {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-right {
    text-align: left;
  }

  .footer-nav {
    align-items: flex-start;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 6px;
    text-align: center;
  }

  .btn {
    padding: 11px 24px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .footer-cta {
    padding: 36px 1.5rem;
    margin: 0 1rem;
  }
}