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

:root {
  --ocean-deep:   #0a2342;
  --ocean-mid:    #1a5276;
  --ocean-bright: #1e8bc3;
  --ocean-light:  #aed6f1;
  --ocean-pale:   #d6eaf8;
  --white:        #ffffff;
  --text-dark:    #0d1b2a;
  --text-muted:   #5d7a8a;
  --radius:       12px;
  --shadow:       0 4px 24px rgba(10, 35, 66, 0.12);
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--white);
  color: var(--text-dark);
  line-height: 1.7;
}

/* ===== NAV ===== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ocean-deep);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6%;
  height: 64px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.2);
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--ocean-light);
  letter-spacing: 2px;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--ocean-pale);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--ocean-light);
}

/* ===== HERO ===== */
.hero {
  min-height: calc(100vh - 64px);
  background: linear-gradient(135deg, var(--ocean-deep) 0%, var(--ocean-mid) 60%, var(--ocean-bright) 100%);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4rem 6%;
  gap: 2rem;
}

.hero-content {
  max-width: 560px;
}

.hero-greeting {
  color: var(--ocean-light);
  font-size: 1.1rem;
  letter-spacing: 1px;
  margin-bottom: 0.4rem;
}

.hero-name {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
}

.hero-title {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--ocean-light);
  margin: 0.5rem 0 1.2rem;
}

.hero-desc {
  color: var(--ocean-pale);
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 460px;
}

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

.hero-avatar {
  flex-shrink: 0;
}

.avatar-circle {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--ocean-bright), var(--ocean-light));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--ocean-deep);
  border: 5px solid rgba(255,255,255,0.2);
  box-shadow: 0 8px 40px rgba(0,0,0,0.3);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.8rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

.btn-primary {
  background: var(--ocean-bright);
  color: var(--white);
  border-color: var(--ocean-bright);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--ocean-light);
  color: var(--ocean-deep);
  border-color: var(--ocean-light);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-outline:hover,
.btn-outline:focus {
  background: var(--white);
  color: var(--ocean-deep);
}

.btn-sm {
  padding: 0.45rem 1.1rem;
  font-size: 0.85rem;
  background: var(--ocean-bright);
  color: var(--white);
  border-color: var(--ocean-bright);
}

.btn-sm:hover,
.btn-sm:focus {
  background: var(--ocean-mid);
  border-color: var(--ocean-mid);
}

.btn-ghost {
  background: transparent;
  color: var(--ocean-mid);
  border-color: var(--ocean-mid);
}

.btn-ghost:hover,
.btn-ghost:focus {
  background: var(--ocean-mid);
  color: var(--white);
}

/* ===== SECTIONS ===== */
.section {
  padding: 5rem 6%;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 800;
  color: var(--ocean-deep);
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  display: block;
  width: 50px;
  height: 4px;
  background: var(--ocean-bright);
  border-radius: 2px;
  margin-top: 8px;
}

/* ===== ABOUT ===== */
.about {
  background: var(--ocean-pale);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--text-dark);
  margin-bottom: 1rem;
  font-size: 1.05rem;
}

.about-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--ocean-bright);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.about-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.8rem;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--ocean-bright);
}

.about-card h3 {
  color: var(--ocean-deep);
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.about-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.about-card li {
  color: var(--text-dark);
  font-size: 0.95rem;
}

/* ===== SKILLS ===== */
.skills {
  background: var(--white);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-card {
  background: var(--ocean-pale);
  border-radius: var(--radius);
  padding: 1.8rem;
  border-top: 4px solid var(--ocean-bright);
  box-shadow: var(--shadow);
}

.skill-icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.skill-card h3 {
  color: var(--ocean-deep);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

.tag {
  background: var(--ocean-bright);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

/* ===== PROJECTS ===== */
.projects {
  background: var(--ocean-pale);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.project-img {
  height: 180px;
  width: 100%;
}

.p1 { background: linear-gradient(135deg, #0a2342, #1e8bc3); }
.p2 { background: linear-gradient(135deg, #1a5276, #aed6f1); }
.p3 { background: linear-gradient(135deg, #1e8bc3, #d6eaf8); }

.project-info {
  padding: 1.5rem;
}

.project-info h3 {
  color: var(--ocean-deep);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.project-info p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

.project-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

/* ===== CONTACT ===== */
.contact {
  background: var(--white);
  text-align: center;
}

.contact-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  margin-top: -1.5rem;
}

.contact-form {
  max-width: 640px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85rem 1.1rem;
  border: 2px solid var(--ocean-pale);
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--ocean-pale);
  outline: none;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--ocean-bright);
  background: var(--white);
}

.contact-form textarea {
  resize: vertical;
}

.contact-form .btn {
  align-self: center;
  padding: 0.85rem 2.5rem;
}

/* ===== FOOTER ===== */
footer {
  background: var(--ocean-deep);
  padding: 2rem 6%;
}

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

footer p {
  color: var(--ocean-pale);
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  gap: 1.5rem;
}

.social-links a {
  color: var(--ocean-light);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.social-links a:hover,
.social-links a:focus {
  color: var(--white);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 3rem 5%;
  }

  .hero-btns {
    justify-content: center;
  }

  .avatar-circle {
    width: 160px;
    height: 160px;
    font-size: 2.5rem;
  }

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

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .nav-links {
    gap: 1.2rem;
  }
}