/* ============================================
   Portfolio — creative but clean
   Edit CSS variables below to tweak your brand
   ============================================ */

:root {
  --color-bg: #f2f7fc;
  --color-surface: #ffffff;
  --color-text: #152238;
  --color-muted: #5a6d82;
  --color-accent: #2f6fed;
  --color-accent-soft: #d6e8ff;
  --color-accent-muted: #a8ccef;
  --color-accent-dark: #1a4fb8;
  --color-border: #d0e0f0;

  --font-display: "Outfit", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;

  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;

  --shadow-sm: 0 4px 20px rgba(28, 28, 36, 0.06);
  --shadow-md: 0 12px 40px rgba(28, 28, 36, 0.1);

  --header-height: 4.5rem;
  --container: min(1120px, 92vw);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.25s var(--ease-out);
}

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0 0 0.75rem;
}

p {
  margin: 0 0 1rem;
}

.container {
  width: var(--container);
  margin-inline: auto;
}

.section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.02em;
}

.section-lead {
  max-width: 42ch;
  color: var(--color-muted);
  margin-bottom: 2.5rem;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  background: var(--color-text);
  color: var(--color-bg);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition:
    transform 0.25s var(--ease-out),
    background 0.25s var(--ease-out),
    border-color 0.25s var(--ease-out),
    color 0.25s var(--ease-out);
}

.btn:hover {
  transform: translateY(-2px);
}

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

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

.btn-secondary {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Header / Nav */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-height);
  background: rgba(242, 247, 252, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.site-header.is-scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -0.03em;
}

.nav-logo-dot {
  color: var(--color-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-menu a {
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}

.nav-menu a:not(.nav-resume)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease-out);
}

.nav-menu a:not(.nav-resume):hover::after,
.nav-menu a:not(.nav-resume):focus-visible::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-resume {
  padding: 0.5rem 1rem;
  border: 2px solid var(--color-text);
  border-radius: 999px;
  transition: background 0.25s var(--ease-out), color 0.25s var(--ease-out);
}

.nav-resume:hover {
  background: var(--color-text);
  color: var(--color-bg);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Hero */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.55;
  animation: float 12s ease-in-out infinite;
}

.hero-blob--1 {
  width: 420px;
  height: 420px;
  top: 10%;
  right: -8%;
  background: var(--color-accent-soft);
}

.hero-blob--2 {
  width: 320px;
  height: 320px;
  bottom: 15%;
  left: -5%;
  background: var(--color-accent-muted);
  animation-delay: -4s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-20px, 16px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-eyebrow {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
}

.hero-title {
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  margin-bottom: 1rem;
}

.hero-name {
  background: linear-gradient(120deg, var(--color-text) 30%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-tagline {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--color-muted);
  max-width: 38ch;
  margin-bottom: 2rem;
}

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

.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  text-decoration: none;
  padding: 0.5rem;
}

.hero-scroll-line {
  display: block;
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, var(--color-accent));
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.3; transform: scaleY(0.8); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.7s var(--ease-out),
    transform 0.7s var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: minmax(240px, 320px) 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 1;
  object-fit: cover;
}

.about-image::before {
  content: "";
  position: absolute;
  inset: -12px -12px 12px 12px;
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  z-index: -1;
  opacity: 0.35;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.about-highlights li {
  color: var(--color-muted);
}

.about-highlights strong {
  color: var(--color-text);
}

/* Skills */
.skills {
  background: var(--color-surface);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.skill-card {
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.skill-card h3 {
  font-size: 1.1rem;
  color: var(--color-accent);
}

.skill-card li {
  padding: 0.35rem 0;
  color: var(--color-muted);
  border-bottom: 1px dashed var(--color-border);
}

.skill-card li:last-child {
  border-bottom: none;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.project-image {
  overflow: hidden;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, var(--color-accent-soft), var(--color-accent-muted));
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s var(--ease-out);
}

.project-body {
  padding: 1.5rem;
}

.project-body h3 {
  font-size: 1.25rem;
}

.project-body p {
  color: var(--color-muted);
  font-size: 0.98rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}

.project-tags li {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.project-links {
  display: flex;
  gap: 1.25rem;
}

.project-links a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
}

.project-links a:hover {
  text-decoration: underline;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-links {
  margin: 1.5rem 0 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.contact-links a {
  font-weight: 500;
  text-decoration: none;
}

.contact-links a:hover {
  text-decoration: underline;
}

.contact-form {
  padding: 1.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 1.1rem;
}

.form-group label {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font: inherit;
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-status {
  margin-top: 1rem;
  font-size: 0.95rem;
  min-height: 1.4em;
}

.form-status.is-success {
  color: #2d6a4f;
}

.form-status.is-error {
  color: var(--color-accent-dark);
}

/* Footer */
.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.footer-inner a {
  text-decoration: none;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem;
    background: rgba(242, 247, 252, 0.98);
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition:
      transform 0.35s var(--ease-out),
      opacity 0.35s var(--ease-out),
      visibility 0.35s;
  }

  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu li {
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu a {
    display: block;
    padding: 1rem 0.5rem;
  }

  .nav-resume {
    text-align: center;
    margin-top: 0.5rem;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .about-image {
    max-width: 280px;
    margin-inline: auto;
  }

  .hero-scroll {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero-blob,
  .hero-scroll-line {
    animation: none;
  }

  .btn:hover,
  .skill-card:hover,
  .project-card:hover {
    transform: none;
  }
}