/*
Theme Name: My Portfolio Theme
Author: You
Version: 1.0
*/

/* ════════════════════════════════════════
   PORTFOLIO — style.css
   Author: Alex Rivera
   Structure:
   1. Design tokens (light + dark)
   2. Reset & base
   3. Typography
   4. Utilities
   5. Navbar
   6. Hero
   7. About
   8. Skills
   9. Projects
   10. Contact
   11. Footer
   12. Scroll reveal animations
   13. Responsive
════════════════════════════════════════ */

/* ── 1. DESIGN TOKENS ── */
:root {
  /* Colors */
  --clr-bg:        #f8f7f4;
  --clr-surface:   #ffffff;
  --clr-text:      #141414;
  --clr-text-muted:#6b6b6b;
  --clr-border:    #e4e4e0;
  --clr-accent:    #5b4fff;
  --clr-accent-lt: #ede9ff;

  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* Spacing */
  --section-py: 7rem;
  --container:  1100px;

  /* Effects */
  --radius-sm:  8px;
  --radius-md:  14px;
  --radius-lg:  22px;
  --shadow-sm:  0 2px 12px rgba(0,0,0,0.06);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.10);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --clr-bg:        #111118;
  --clr-surface:   #1c1c26;
  --clr-text:      #eeeef2;
  --clr-text-muted:#8888a0;
  --clr-border:    #2a2a38;
  --clr-accent:    #7c6dff;
  --clr-accent-lt: #1f1a40;
  --shadow-sm:  0 2px 12px rgba(0,0,0,0.3);
  --shadow-md:  0 8px 32px rgba(0,0,0,0.4);
}

/* ── 2. RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }

/* ── 3. TYPOGRAPHY ── */
h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  color: var(--clr-text);
}
h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 600; margin-bottom: 2.5rem; }
h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 0.5rem; }

p  { color: var(--clr-text-muted); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ── 4. UTILITIES ── */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section-eyebrow {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 0.75rem;
}

section { padding: var(--section-py) 0; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.75rem 1.6rem;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
}
.btn-primary:hover {
  background: transparent;
  color: var(--clr-accent);
}

.btn-outline {
  background: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border);
}
.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.btn-link {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--clr-accent);
  transition: opacity var(--transition);
}
.btn-link:hover { opacity: 0.7; }
.btn-link.muted { color: var(--clr-text-muted); }

/* ── 5. NAVBAR ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background var(--transition), box-shadow var(--transition);
}

#navbar.scrolled {
  background: var(--clr-surface);
  box-shadow: var(--shadow-sm);
}

.nav-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
}
.dot { color: var(--clr-accent); }

.nav-links {
  display: flex;
  gap: 2.2rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 2px;
  background: var(--clr-accent);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-text);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 0.8rem; }

.theme-toggle {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  cursor: pointer;
  font-size: 1rem;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
  color: var(--clr-text);
}
.theme-toggle:hover { border-color: var(--clr-accent); }
[data-theme="light"] .icon-moon { display: none; }
[data-theme="dark"]  .icon-sun  { display: none; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 38px; height: 38px;
  align-items: center; justify-content: center;
  background: none; border: none; cursor: pointer;
}
.hamburger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── 6. HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding-top: 5rem;
}

.hero-bg-shape {
  position: absolute;
  top: -20%;
  right: -15%;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, var(--clr-accent-lt) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  animation: floatShape 8s ease-in-out infinite;
}

@keyframes floatShape {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-30px) scale(1.04); }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 3rem;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1rem;
}

.hero-name {
  margin-bottom: 1.2rem;
}

.accent { color: var(--clr-accent); }

.hero-tagline {
  font-size: 1.15rem;
  max-width: 46ch;
  color: var(--clr-text-muted);
  margin-bottom: 2.2rem;
}

.hero-ctas { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Avatar */
.hero-visual {
  position: relative;
  width: 280px;
  height: 280px;
  flex-shrink: 0;
}

.avatar-ring {
  width: 100%;
  height: 100%;
  border-radius: 38% 62% 63% 37% / 41% 44% 56% 59%;
  border: 2px solid var(--clr-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: morphing 8s ease-in-out infinite;
  background: var(--clr-accent-lt);
}

@keyframes morphing {
  0%,100% { border-radius: 38% 62% 63% 37% / 41% 44% 56% 59%; }
  25%      { border-radius: 55% 45% 40% 60% / 57% 43% 57% 43%; }
  50%      { border-radius: 47% 53% 60% 40% / 36% 62% 38% 64%; }
  75%      { border-radius: 62% 38% 45% 55% / 50% 30% 70% 50%; }
}

.avatar-placeholder {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--clr-accent);
}

.floating-badge {
  position: absolute;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  padding: 0.4rem 1rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--clr-text);
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
}
.badge-top    { top: 5%; right: -20%; }
.badge-bottom { bottom: 10%; left: -18%; }

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  z-index: 1;
}
.scroll-line {
  width: 40px; height: 1px;
  background: var(--clr-border);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--clr-accent);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  to { left: 100%; }
}

/* ── 7. ABOUT ── */
#about { background: var(--clr-surface); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.about-text h2 { margin-bottom: 1.2rem; }
.about-text p  { margin-bottom: 1rem; }
.about-text .btn { margin-top: 1.4rem; }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  transition: border-color var(--transition), transform var(--transition);
}
.stat-card:hover {
  border-color: var(--clr-accent);
  transform: translateY(-3px);
}

.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--clr-accent);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

/* ── 8. SKILLS ── */
#skills {}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
}

.skill-group {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.skill-group-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  padding: 0.3rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text);
  transition: all var(--transition);
}
.skill-tag:hover {
  background: var(--clr-accent-lt);
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

/* ── 9. PROJECTS ── */
#projects { background: var(--clr-surface); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.project-img {
  height: 180px;
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  position: relative;
}

.project-img-label {
  background: rgba(255,255,255,0.18);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 100px;
  padding: 0.25rem 0.8rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: #fff;
}

.project-body { padding: 1.4rem; }
.project-body h3 { color: var(--clr-text); margin-bottom: 0.5rem; }
.project-body p  { font-size: 0.9rem; margin-bottom: 1rem; }

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
}
.project-tags span {
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--clr-accent-lt);
  color: var(--clr-accent);
  border-radius: 100px;
  padding: 0.2rem 0.7rem;
}

.project-links { display: flex; gap: 1.2rem; }

/* ── 10. CONTACT ── */
#contact {}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}

.contact-info p { margin-bottom: 2rem; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.92rem;
  color: var(--clr-text-muted);
  transition: color var(--transition);
}
.contact-item:hover { color: var(--clr-accent); }

.contact-icon {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--clr-text);
}

.form-group input,
.form-group textarea {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--clr-text);
  transition: border-color var(--transition);
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--clr-text-muted); }

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-lt);
}

/* ── 11. FOOTER ── */
footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text);
  margin: 0;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin: 0;
}

/* ── 12. SCROLL REVEAL ── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .hero-bg-shape, .avatar-ring, .scroll-line::after {
    animation: none;
  }
}

/* ── 13. RESPONSIVE ── */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .about-grid  { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  :root { --section-py: 4.5rem; }
  h2 { margin-bottom: 1.5rem; }

  .nav-links {
    position: fixed;
    inset: 0 0 0 30%;
    background: var(--clr-surface);
    flex-direction: column;
    padding: 6rem 2rem;
    gap: 2rem;
    transform: translateX(100%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 99;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { font-size: 1.1rem; }
  .hamburger { display: flex; }

  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-ctas { flex-direction: column; }
  .projects-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; text-align: center; }
  .badge-top, .badge-bottom { display: none; }
}