/* ============================================
   Enterprise Portfolio — Serif, Cool Slate
   ============================================ */

:root {
  /* Slate / cool dark palette */
  --bg-deep: #0f172a;
  --bg-mid: #1e293b;
  --bg-elevated: #334155;
  --bg-card: #1a2234;
  
  /* Soft teal accent */
  --accent: #2dd4bf;
  --accent-dim: #14b8a6;
  --accent-bright: #5eead4;
  --accent-glow: rgba(45, 212, 191, 0.2);
  --accent-subtle: rgba(45, 212, 191, 0.08);
  
  /* Neutrals */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(45, 212, 191, 0.4);
  
  /* Typography */
  --font-body: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  /* Card style */
  --card-radius: 8px;
  --card-border-left: 3px solid var(--accent);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-weight: var(--font-weight-regular);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Subtle grid background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: -1;
}

/* ========== Card Base (replaces glass) ========== */
.glass {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: var(--card-border-left);
}

/* ========== Navigation ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(15, 23, 42, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.nav__brand {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.35rem;
  color: var(--text-primary);
}

.nav__links {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
}

.nav__links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
}

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

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse 70% 40% at 30% 20%, var(--accent-subtle) 0%, transparent 50%),
    radial-gradient(ellipse 50% 30% at 70% 80%, rgba(45, 212, 191, 0.05) 0%, transparent 50%),
    var(--bg-deep);
  z-index: 0;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
}

.hero__eyebrow {
  font-size: 0.8rem;
  font-weight: var(--font-weight-medium);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-md);
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2.75rem, 7vw, 4.5rem);
  font-weight: 400;
  /* font-style: italic; */
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.hero__accent {
  font-style: normal;
  color: var(--accent);
}

.hero__hook {
  font-size: 1.2rem;
  color: var(--text-secondary);
  font-weight: var(--font-weight-regular);
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.hero__tagline {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: var(--space-lg);
}

.hero__cta {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--accent);
  color: var(--bg-deep);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border-radius: 4px;
  transition: all 0.2s ease;
  letter-spacing: 0.03em;
}

.hero__cta:hover {
  background: var(--accent-bright);
  color: var(--bg-deep);
  transform: translateY(-2px);
}

/* ========== Section Headers ========== */
.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}

.section__subtitle {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* ========== About ========== */
.about {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-mid);
}

.about__inner {
  max-width: 800px;
  margin: 0 auto;
  width: 100%;
}

.about__header {
  margin-bottom: var(--space-xl);
}

.about__label {
  display: block;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-xs);
}

.about__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (max-width: 700px) {
  .about__content {
    grid-template-columns: 1fr;
  }
}

.about__quote {
  margin: 0;
  padding: var(--space-lg);
  background: var(--bg-card);
  border-left: 4px solid var(--accent);
  border-radius: 0 8px 8px 0;
  font-size: 1.1rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.6;
}

.about__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.about__text {
  color: var(--text-secondary);
  line-height: 1.75;
  margin: 0;
}

/* ========== Tech Stack ========== */
.tech {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-mid);
}

.tech__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-md);
  max-width: 960px;
  margin: 0 auto;
}

.tech__card {
  padding: var(--space-lg);
  border-radius: var(--card-radius);
  transition: all 0.25s ease;
}

.tech__card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.tech__icon {
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-md);
}

.tech__icon svg {
  width: 100%;
  height: 100%;
}

.tech__icon--java { color: #ed8b00; }
.tech__icon--angular { color: #dd0031; }
.tech__icon--flutter { color: #02569b; }

.tech__card h3 {
  font-size: 1.15rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.tech__card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ========== Projects ========== */
.projects {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
}

.projects__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.project__card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  padding: var(--space-lg);
  border-radius: var(--card-radius);
  align-items: start;
  transition: all 0.25s ease;
}

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

@media (max-width: 768px) {
  .project__card {
    grid-template-columns: 1fr;
  }
}

.project__visual {
  aspect-ratio: 16/10;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-elevated);
}

.project__mockup {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: var(--space-sm);
}

.mockup__header {
  display: flex;
  gap: 6px;
  margin-bottom: var(--space-sm);
}

.mockup__header span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.mockup__header span:first-child { background: #ef4444; }
.mockup__header span:nth-child(2) { background: #eab308; }
.mockup__header span:last-child { background: #22c55e; }

.mockup__chart {
  flex: 1;
  background: linear-gradient(180deg, var(--accent-subtle) 0%, transparent 100%);
  border-radius: 4px;
  margin-bottom: var(--space-sm);
  position: relative;
}

.mockup__chart::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60%;
  background: repeating-linear-gradient(
    90deg,
    transparent,
    transparent 18px,
    rgba(45, 212, 191, 0.08) 18px,
    rgba(45, 212, 191, 0.08) 19px
  );
  border-radius: 0 0 4px 4px;
}

.mockup__grid {
  height: 36px;
  background: var(--bg-mid);
  border-radius: 4px;
}

.project__mockup--employee {
  flex-direction: column;
}

.project__mockup--employee .mockup__header {
  flex-shrink: 0;
}

.project__mockup--employee .mockup__body {
  flex: 1;
  display: flex;
  gap: var(--space-sm);
  min-height: 0;
}

.project__mockup--employee .mockup__sidebar {
  width: 25%;
  min-width: 40px;
  background: var(--bg-mid);
  border-radius: 4px;
}

.project__mockup--employee .mockup__content {
  flex: 1;
  background: var(--accent-subtle);
  border-radius: 4px;
}

.project__content h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
  margin-bottom: var(--space-sm);
}

.project__desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: var(--space-md);
}

.project__features {
  list-style: none;
  margin-bottom: var(--space-md);
}

.project__features li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: var(--space-xs);
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.project__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 5px;
  height: 5px;
  background: var(--accent);
  border-radius: 50%;
}

.project__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.project__tags span {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--accent-subtle);
  color: var(--accent);
  border-radius: 3px;
  border: 1px solid var(--border-accent);
}

.project__visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.project__visual:has(> img) .project__mockup {
  display: none;
}

/* ========== Experience Timeline ========== */
.experience {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-mid);
}

.timeline {
  max-width: 620px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.timeline__item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-radius: var(--card-radius);
  transition: all 0.25s ease;
}

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

.timeline__marker {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 0.5em;
}

.timeline__content {
  flex: 1;
}

.timeline__date {
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: var(--font-weight-medium);
  display: block;
  margin-bottom: var(--space-xs);
  letter-spacing: 0.05em;
}

.timeline__content h3 {
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-xs);
}

.timeline__content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========== Contact ========== */
.contact {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl) var(--space-lg);
  background: var(--bg-deep);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% 50%, var(--accent-subtle) 0%, transparent 70%);
  pointer-events: none;
}

.contact__inner {
  position: relative;
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-2xl);
  text-align: center;
}

.contact__content {
  margin-bottom: var(--space-xl);
}

.contact__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: var(--font-weight-semibold);
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  margin-bottom: var(--space-sm);
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--border-accent);
  border-radius: 4px;
}

.contact__title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.contact__text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto var(--space-xl);
}

.contact__form {
  max-width: 480px;
  margin: 0 auto var(--space-xl);
  text-align: left;
}

.contact__field {
  margin-bottom: var(--space-md);
}

.contact__field label {
  display: block;
  font-size: 0.85rem;
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.contact__field input,
.contact__field textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  color: var(--text-primary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color 0.2s ease;
}

.contact__field input::placeholder,
.contact__field textarea::placeholder {
  color: var(--text-muted);
}

.contact__field input:focus,
.contact__field textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.contact__field textarea {
  resize: vertical;
  min-height: 100px;
}

.contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.contact__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-weight: var(--font-weight-semibold);
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.25s ease;
  letter-spacing: 0.03em;
}

.contact__btn--primary {
  background: var(--accent);
  color: var(--bg-deep);
  border: 2px solid var(--accent);
  box-shadow: 0 0 32px var(--accent-glow);
}

.contact__btn--primary:hover {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  color: var(--bg-deep);
  transform: translateY(-3px);
  box-shadow: 0 8px 32px var(--accent-glow);
}

.contact__btn--secondary {
  background: transparent;
  border: 2px solid var(--border);
  color: var(--text-secondary);
}

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

.contact__form .contact__btn {
  cursor: pointer;
  font-family: inherit;
}

.contact__form button[type="submit"] {
  border: 2px solid var(--accent);
}

.contact__social {
  display: flex;
  gap: var(--space-xl);
  justify-content: center;
}

.contact__social-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: var(--font-weight-medium);
  transition: all 0.2s ease;
}

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

/* ========== Footer ========== */
.footer {
  padding: var(--space-lg);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer a {
  color: var(--text-muted);
  text-decoration: none;
}

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