/* ========== VARIABLES ========== */
:root {
  --bg-primary: #0a0f1a;
  --bg-secondary: #111827;
  --bg-card: #1a2332;
  --bg-card-hover: #1f2a3d;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #14b8a6;          /* Teal */
  --accent-light: #2dd4bf;
  --accent-dark: #0d9488;
  --blue: #3b82f6;
  --border: #1e293b;
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --font-main: 'Inter', system-ui, sans-serif;
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --container: 1100px;
  --header-height: 70px;
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

ul {
  list-style: none;
}

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

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

button,
input,
textarea {
  font-family: inherit;
  border: none;
  outline: none;
}

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

.section {
  padding: 5rem 0;
}

.section__title {
  font-family: var(--font-heading);
  font-size: 2.25rem;
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.section__subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 3rem;
  font-size: 1.05rem;
}

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--blue));
  color: #fff;
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(20, 184, 166, 0.35);
}

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

.btn--outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.btn--full {
  width: 100%;
  justify-content: center;
}

/* ========== HEADER / NAV ========== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(10, 15, 26, 0.85);
  backdrop-filter: blur(12px);
  z-index: 100;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--border);
  background: rgba(10, 15, 26, 0.95);
}

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

.nav__logo {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
}

.nav__logo span {
  color: var(--accent);
}

.nav__list {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}

.nav__link:hover,
.nav__link.active-link {
  color: var(--accent-light);
}

.nav__link.active-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav__toggle,
.nav__close {
  display: none;
  font-size: 1.4rem;
  color: var(--text-primary);
  cursor: pointer;
}

/* ========== HERO ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--header-height);
}

.hero__container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero__greeting {
  color: var(--accent);
  font-weight: 500;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 0.5rem;
}

.hero__subtitle {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  min-height: 2rem;
}

.typed-text {
  color: var(--accent-light);
}

.cursor {
  color: var(--accent);
  animation: blink 0.8s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero__description {
  color: var(--text-secondary);
  max-width: 540px;
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.hero__buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero__social {
  display: flex;
  gap: 1rem;
}

.hero__social a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.hero__social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-3px);
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  max-width: 320px;
}

.hero__card-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1rem;
  text-align: center;
  transition: all var(--transition);
}

.hero__card-content:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-dark);
  transform: translateY(-4px);
}

.hero__card-content i {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.5rem;
  display: block;
}

.hero__card-content span {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
}

.hero__scroll a {
  color: var(--text-muted);
  font-size: 1.2rem;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ========== ABOUT ========== */
.about__container {
  max-width: 800px;
  margin: 0 auto;
}

.about__content p {
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  font-size: 1.05rem;
}

.about__content strong {
  color: var(--accent-light);
}

.about__info {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin: 2rem 0;
}

.about__info-item {
  text-align: center;
}

.about__info-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
}

.about__info-label {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ========== SKILLS ========== */
.skills__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.skills__group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: all var(--transition);
}

.skills__group:hover {
  border-color: var(--accent-dark);
  transform: translateY(-3px);
}

.skills__group-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.skills__group-title i {
  color: var(--accent);
}

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

.skill-tag {
  background: rgba(20, 184, 166, 0.1);
  color: var(--accent-light);
  border: 1px solid rgba(20, 184, 166, 0.25);
  padding: 0.35rem 0.75rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition);
}

.skill-tag:hover {
  background: rgba(20, 184, 166, 0.2);
  border-color: var(--accent);
}

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

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--accent-dark);
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.project-card__image {
  height: 180px;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card__placeholder {
  font-size: 3rem;
  color: var(--accent);
  opacity: 0.6;
}

.project-card__content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.project-card__description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  flex: 1;
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.project-card__tech span {
  background: rgba(59, 130, 246, 0.12);
  color: #93c5fd;
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 500;
}

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

.project-card__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent-light);
  transition: color var(--transition);
}

.project-card__link:hover {
  color: var(--accent);
}

.projects__note {
  text-align: center;
  margin-top: 2.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  background: var(--bg-card);
  border: 1px dashed var(--border);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
}

.projects__note i {
  color: var(--accent);
  margin-right: 0.4rem;
}

/* ========== SERVICES ========== */
.services__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--accent-dark);
  transform: translateY(-4px);
}

.service-card__icon {
  width: 50px;
  height: 50px;
  background: rgba(20, 184, 166, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.service-card__icon i {
  font-size: 1.3rem;
  color: var(--accent);
}

.service-card__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

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

/* ========== CONTACT ========== */
.contact__container {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.contact__text {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  font-size: 1.05rem;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact__detail {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact__detail i {
  width: 42px;
  height: 42px;
  background: rgba(20, 184, 166, 0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

.contact__detail h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.contact__detail a,
.contact__detail span {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

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

.contact__social {
  display: flex;
  gap: 0.75rem;
}

.contact__social a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition: all var(--transition);
}

.contact__social a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Form */
.contact__form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--text-secondary);
}

.form__group input,
.form__group textarea {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}

.form__group input:focus,
.form__group textarea:focus {
  border-color: var(--accent);
}

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

.form__status {
  margin-top: 1rem;
  font-size: 0.9rem;
  text-align: center;
  min-height: 1.4rem;
}

.form__status.success {
  color: var(--accent-light);
}

.form__status.error {
  color: #f87171;
}

/* ========== FOOTER ========== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
}

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

.footer__note {
  margin-top: 0.35rem;
  font-size: 0.85rem !important;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 900px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__buttons {
    justify-content: center;
  }

  .hero__social {
    justify-content: center;
  }

  .hero__visual {
    display: none;
  }

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

@media (max-width: 768px) {
  .nav__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: var(--bg-secondary);
    padding: 5rem 2rem 2rem;
    transition: right 0.3s ease;
    border-left: 1px solid var(--border);
    z-index: 100;
  }

  .nav__menu.show-menu {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: 1.5rem;
  }

  .nav__link.active-link::after {
    display: none;
  }

  .nav__toggle,
  .nav__close {
    display: block;
  }

  .nav__close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
  }

  .section {
    padding: 4rem 0;
  }

  .section__title {
    font-size: 1.85rem;
  }

  .about__info {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero__buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }

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