/* =============================================================
   ZyInnova Theme Tokens (FINAL)
============================================================= */
:root {
  --z-bg: #061427;
  --z-surface: #0b2138;
  --z-text: #eaf2ff;
  --z-muted: #b6c6da;
  --z-border: rgba(255, 255, 255, 0.12);
  --z-accent: #148af9;
  --z-accent-soft: rgba(20, 138, 249, 0.18);
  --z-radius: 14px;
  --z-shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.25);
}

/* =============================================================
   Base / Resets
============================================================= */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Open Sans", sans-serif;
  background: var(--z-bg);
  color: var(--z-text);
  margin: 0;
  overflow-x: hidden; /* prevents accidental horizontal scroll */
}

a {
  color: inherit;
}

::selection {
  background: rgba(20, 138, 249, 0.35);
  color: var(--z-text);
}

/* Reduce motion preference */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* =============================================================
   HEADER & SIDEBAR NAVIGATION (FINAL)
============================================================= */
#header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100px;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  z-index: 999;
}

.nav-menu {
  padding: 0;
}

.nav-menu ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.nav-menu a {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.06);
  color: var(--z-text);
  border: 1px solid var(--z-border);
  box-shadow: var(--z-shadow-soft);
  transition: transform 0.25s ease, border-color 0.25s ease,
    background 0.25s ease, color 0.25s ease;
}

.nav-menu a i {
  font-size: 20px;
}

/* Accessible hidden label (keeps screen readers happy) */
.nav-menu a span {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav-menu a:hover,
.nav-menu .active {
  background: var(--z-accent-soft);
  border-color: rgba(20, 138, 249, 0.35);
  color: var(--z-accent);
  transform: translateY(-1px);
}

.nav-menu a:focus-visible {
  outline: 2px solid rgba(20, 138, 249, 0.55);
  outline-offset: 3px;
}

/* Mobile nav toggle */
.mobile-nav-toggle {
  position: fixed;
  top: 15px;
  right: 15px;
  font-size: 28px;
  z-index: 1000;
  cursor: pointer;
  color: var(--z-text);
}

/* Mobile behaviour */
@media (max-width: 991px) {
  #header {
    left: -100px;
    transition: left 0.3s ease;
  }

  .mobile-nav-active #header {
    left: 0;
  }
}

@media (min-width: 992px) {
  .mobile-nav-toggle {
    display: none;
  }

  /* Main content offset (IMPORTANT: Hero is outside #main, so we offset it too) */
  #main {
    margin-left: 100px;
  }

  #hero,
  #footer {
    padding-left: 100px;
  }

  /* Extra breathing so hero text never hugs the sidebar */
  #hero .container {
    padding-left: 24px;
    padding-right: 24px;
  }
}

/* =============================================================
   HERO
============================================================= */
#hero {
  height: 100vh;
  background: url("../img/background_portfolio.jpeg") center / cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(6, 20, 39, 0.78) 0%,
    rgba(6, 20, 39, 0.65) 45%,
    rgba(6, 20, 39, 0.85) 100%
  );
}

#hero .container {
  position: relative;
  z-index: 2;
}

#hero h1 {
  font-size: 56px;
  font-weight: 800;
  margin: 0;
  color: var(--z-text);
  letter-spacing: -0.02em;
}

#hero p {
  margin-top: 16px;
  font-size: 24px;
  color: var(--z-muted);
}

#hero .social-links {
  margin-top: 28px;
}

#hero .social-links a {
  font-size: 20px;
  margin-right: 14px;
  color: var(--z-text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--z-border);
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: transform 0.25s ease, border-color 0.25s ease,
    background 0.25s ease, color 0.25s ease;
}

#hero .social-links a:hover {
  background: var(--z-accent-soft);
  color: var(--z-accent);
  transform: translateY(-2px);
}

/* =============================================================
   SECTIONS (Global rhythm)
============================================================= */
section {
  padding: 90px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 40px;
}

.section-title h2 {
  font-size: 30px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--z-text);
  letter-spacing: 0.06em;
}

.section-title p {
  max-width: 760px;
  margin: 16px auto 0;
  color: var(--z-muted);
  line-height: 1.75;
}

/* =============================================================
   ABOUT
============================================================= */
.about img {
  border-radius: var(--z-radius);
}

/* =============================================================
   CARD BASE (Shared)
============================================================= */
.card-surface {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--z-border);
  border-radius: var(--z-radius);
  box-shadow: var(--z-shadow-soft);
}

/* =============================================================
   RESUME (Spacing + Sticky-left)
============================================================= */
#resume {
  padding-top: 100px;
  padding-bottom: 110px;
}

.resume .resume-title {
  margin: 34px 0 14px;
  font-size: 22px;
  letter-spacing: 0.02em;
  position: relative;
  padding-top: 10px;
}

.resume .resume-title:first-child {
  margin-top: 0;
}

.resume .resume-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 46px;
  height: 1px;
  background: rgba(255, 255, 255, 0.1);
}

/* Resume cards */
.resume .resume-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--z-border);
  border-radius: var(--z-radius);
  padding: 24px;
  box-shadow: var(--z-shadow-soft);
  margin-bottom: 18px;
}

.resume .resume-item:last-child {
  margin-bottom: 0;
}

.resume .resume-item h4 {
  margin: 0 0 10px;
  line-height: 1.25;
  color: var(--z-text);
}

.resume .resume-item h5 {
  margin: 0 0 12px;
  opacity: 0.9;
  color: var(--z-muted);
}

.resume .resume-item p {
  margin: 0 0 14px;
  line-height: 1.75;
  color: var(--z-muted);
}

.resume .resume-item ul {
  margin: 0;
  padding-left: 18px;
}

.resume .resume-item li {
  margin: 6px 0;
  line-height: 1.65;
  color: var(--z-muted);
}

/* Sticky left column */
@media (min-width: 992px) {
  .resume .resume-left {
    position: sticky;
    top: 26px;
    align-self: flex-start;
  }
}

/* =============================================================
   PROJECTS (Founder-grade cards)
============================================================= */
.projects-block-title {
  margin-top: 26px;
  margin-bottom: 14px;
  font-size: 16px;
  letter-spacing: 0.02em;
  opacity: 0.95;
  color: var(--z-text);
  font-weight: 800;
}

.projects-block + .projects-block {
  margin-top: 56px;
}

.project-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--z-border);
  border-radius: var(--z-radius);
  box-shadow: var(--z-shadow-soft);
  padding: 24px;
  height: 100%;
  transition: transform 0.25s ease, box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
  border-color: rgba(20, 138, 249, 0.28);
}

.project-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.project-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--z-text);
}

.project-icon i {
  font-size: 20px;
}

.project-badge {
  font-size: 12px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--z-border);
  background: rgba(255, 255, 255, 0.06);
  color: var(--z-text);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.badge-live {
  border-color: rgba(25, 206, 122, 0.35);
  background: rgba(25, 206, 122, 0.12);
}

.badge-progress {
  border-color: rgba(20, 138, 249, 0.35);
  background: rgba(20, 138, 249, 0.14);
}

.badge-concept {
  border-color: rgba(255, 193, 7, 0.35);
  background: rgba(255, 193, 7, 0.12);
}

.project-title {
  font-size: 18px;
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--z-text);
  line-height: 1.25;
}

.project-desc {
  margin: 0 0 14px;
  color: var(--z-muted);
  line-height: 1.7;
  font-size: 14.5px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.project-tags span {
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--z-border);
  background: rgba(255, 255, 255, 0.05);
  color: var(--z-text);
  opacity: 0.95;
}

.project-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--z-accent);
  font-weight: 700;
  text-decoration: none;
  position: relative;
}

.project-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0%;
  height: 1px;
  background: rgba(20, 138, 249, 0.75);
  transition: width 0.25s ease;
}

.project-links a:hover::after {
  width: 100%;
}

@media (min-width: 1200px) {
  .portfolio .col-lg-4 {
    flex: 0 0 auto;
    width: 33.333333%;
  }
}

/* =============================================================
   CONTACT (Founder-grade)
============================================================= */
.contact .section-title {
  margin-bottom: 28px;
}

.contact .contact-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--z-border);
  border-radius: var(--z-radius);
  box-shadow: var(--z-shadow-soft);
  padding: 26px;
  height: 100%;
}

.contact .contact-card-compact {
  padding: 22px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.045),
    rgba(255, 255, 255, 0.02)
  );
}

.contact .contact-title {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.2;
  color: var(--z-text);
}

.contact .contact-title-sm {
  margin: 0 0 14px;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--z-text);
  opacity: 0.95;
  font-weight: 800;
}

.contact .contact-sub {
  margin: 0 0 18px;
  color: var(--z-muted);
  line-height: 1.75;
}

.contact .contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

#contact {
  padding-bottom: 140px;
}

.btn-primary-pill,
.btn-ghost-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease,
    background 0.25s ease;
  border: 1px solid transparent;
}

.btn-primary-pill {
  background: var(--z-accent-soft);
  border-color: rgba(20, 138, 249, 0.35);
  color: var(--z-text);
  box-shadow: 0 10px 26px rgba(20, 138, 249, 0.35);
}

.btn-primary-pill:hover {
  transform: translateY(-2px);
  border-color: rgba(20, 138, 249, 0.55);
}

.btn-ghost-pill {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--z-border);
  color: var(--z-text);
}

.btn-ghost-pill:hover {
  transform: translateY(-2px);
  border-color: rgba(20, 138, 249, 0.35);
}

.contact .contact-meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 6px;
}

.contact .meta-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 12px;
  padding: 12px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.contact .meta-item i {
  font-size: 18px;
  color: var(--z-accent);
  margin-top: 2px;
}

.contact .meta-label {
  font-size: 12px;
  color: var(--z-muted);
  margin-bottom: 2px;
}

.contact .meta-value,
.contact .meta-item a {
  color: var(--z-text);
  text-decoration: none;
  font-weight: 700;
}

.contact .meta-item a:hover {
  color: rgba(20, 138, 249, 0.9);
}

.contact .contact-links {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

.contact .contact-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--z-text);
  text-decoration: none;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.contact .contact-links a span {
  color: var(--z-muted);
  font-weight: 700;
  margin-left: auto;
  margin-right: 8px;
  white-space: nowrap;
}

.contact .contact-links a:hover {
  transform: translateY(-2px);
  border-color: rgba(20, 138, 249, 0.3);
}

.contact .contact-note {
  border-radius: 14px;
  padding: 14px;
  border: 1px solid rgba(20, 138, 249, 0.22);
  background: rgba(20, 138, 249, 0.08);
}

.contact .note-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.02em;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  margin-bottom: 10px;
  color: var(--z-text);
}

.contact .contact-note p {
  margin: 0;
  color: var(--z-muted);
  line-height: 1.7;
}

@media (min-width: 992px) {
  .contact .contact-meta {
    grid-template-columns: 1fr 1fr;
  }
}

/* =============================================================
   FOOTER (Premium)
============================================================= */
#footer {
  border-top: 1px solid var(--z-border);
  padding: 46px 0 34px;
  text-align: left;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  align-items: start;
}

.footer-name {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--z-text);
}

.footer-role {
  margin-top: 6px;
  color: var(--z-muted);
  font-weight: 700;
}

.footer-note {
  margin-top: 10px;
  color: var(--z-muted);
  line-height: 1.7;
  max-width: 520px;
  opacity: 0.95;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  justify-content: flex-end;
}

.footer-links a {
  color: var(--z-muted);
  text-decoration: none;
  font-weight: 800;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease,
    transform 0.25s ease;
}

.footer-links a:hover {
  color: var(--z-text);
  border-color: rgba(20, 138, 249, 0.25);
  background: rgba(255, 255, 255, 0.03);
  transform: translateY(-1px);
}

.footer-links .footer-cv {
  color: var(--z-text);
  background: rgba(20, 138, 249, 0.1);
  border-color: rgba(20, 138, 249, 0.25);
}

.footer-links .footer-cv:hover {
  background: rgba(20, 138, 249, 0.14);
  border-color: rgba(20, 138, 249, 0.4);
}

.footer-bottom {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
}

.footer-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.footer-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--z-muted);
  text-decoration: none;
  font-weight: 800;
  font-size: 12px;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.footer-pill:hover {
  border-color: rgba(20, 138, 249, 0.25);
  color: var(--z-text);
}

.footer-copy {
  color: var(--z-muted);
  font-weight: 800;
  font-size: 12px;
  opacity: 0.85;
}

/* Mobile layout */
@media (max-width: 991px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
    gap: 12px 18px;
  }
}

/* =============================================================
   BACK TO TOP
============================================================= */
.back-to-top {
  position: fixed;
  right: 15px;
  bottom: 15px;
  width: 40px;
  height: 40px;
  background: var(--z-accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: 0.3s;
  z-index: 999;
}

.back-to-top.active {
  opacity: 1;
  visibility: visible;
}

/* =========================
   A11y: Skip link + Focus
========================= */
.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: rgba(20, 138, 249, 0.18);
  border: 1px solid rgba(20, 138, 249, 0.35);
  color: var(--z-text);
  text-decoration: none;
  transform: translateY(-140%);
  transition: transform 0.2s ease;
  z-index: 2000;
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid rgba(20, 138, 249, 0.75);
  outline-offset: 3px;
}