/* ============================================================
   SHARED.CSS — Ahmed Al-Obaidi Portfolio
   Variables · Reset · Nav · Buttons · Footer · Utilities
   ============================================================ */

/* ── VARIABLES ───────────────────────────────────────────── */
:root {
  --sage:        #5a7369;
  --sage-light:  #7B9E8C;
  --sage-text:   #4d635a;   /* sage darkened for text on light backgrounds (AA) */
  --teal-dark:   #2B4D6A;
  --navy:        #305060;
  --navy-deep:   #374f59;
  --off-white:   #efefef;
  --white:       #FFFFFF;

  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Outfit', sans-serif;

  --max-width: 1200px;
  --pad-x:     3rem;
  --pad-x-md:  1.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--off-white);
  color: var(--navy-deep);
  overflow-x: hidden;
}

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

/* ── KEYFRAMES ───────────────────────────────────────────── */
@keyframes growIn {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); }
}

@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes slideUpSm {
  from { transform: translateY(30px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

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

@keyframes fillBar {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

/* ── NAV ─────────────────────────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem var(--pad-x);
  background: rgba(55, 79, 89, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 0.04em;
  color: var(--white);
  text-decoration: none;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--white);
}

.nav-links a.active {
  color: var(--white);
  border-bottom: 2px solid var(--sage-light);
  padding-bottom: 2px;
}

/* Hamburger button (hidden on desktop) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 201;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}

/* Open state */
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── BUTTONS ─────────────────────────────────────────────── */
.btn {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.9rem 2.2rem;
  cursor: pointer;
  transition: transform 0.2s, opacity 0.2s;
  display: inline-block;
  border: none;
}

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

.btn-white {
  background: var(--white);
  color: var(--navy-deep);
}

.btn-white:hover {
  background: var(--off-white);
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.62);
}

.btn-ghost:hover {
  border-color: var(--white);
}

/* ── SECTION UTILITIES ───────────────────────────────────── */
.inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-block {
  padding: 6rem var(--pad-x);
}

.s-label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--sage-text);
  margin-bottom: 0.4rem;
}

.s-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 4.5vw, 4rem);
  line-height: 0.95;
  text-transform: uppercase;
  color: var(--navy-deep);
  margin-bottom: 3rem;
}

/* ── FOOTER ──────────────────────────────────────────────── */
footer {
  background: var(--teal-dark);
  color: rgba(255, 255, 255, 0.82);
  text-align: center;
  padding: 1.4rem var(--pad-x);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
}

/* ── RESPONSIVE: TABLET ──────────────────────────────────── */
@media (max-width: 900px) {
  :root {
    --pad-x: var(--pad-x-md);
  }

  nav {
    padding: 1rem var(--pad-x-md);
  }

  /* Show hamburger, hide nav links (collapsed by default) */
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    position: absolute;
    top: 100%;
    left: 0; right: 0;
    background: rgba(44, 63, 71, 0.98);
    padding: 1rem var(--pad-x-md) 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: 0.75rem 0;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  }

  .nav-links a.active {
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    padding-bottom: 0.75rem;
    color: var(--sage-light);
  }

  .section-block {
    padding: 4rem var(--pad-x-md);
  }

  footer {
    padding: 1.4rem var(--pad-x-md);
  }
}

/* ── RESPONSIVE: MOBILE ──────────────────────────────────── */
@media (max-width: 480px) {
  .btn {
    font-size: 0.9rem;
    padding: 0.8rem 1.8rem;
  }
}

/* ── LANGUAGE TOGGLE ─────────────────────────────────────── */
.lang-toggle {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.28);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 5px 11px;
  border-radius: 3px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: border-color 0.2s, background 0.2s;
  flex-shrink: 0;
  margin-left: 1rem;
}

.lang-toggle:hover {
  border-color: rgba(255,255,255,0.55);
  background: rgba(255,255,255,0.06);
}

.lang-nl,
.lang-en {
  color: rgba(255,255,255,0.72);
  transition: color 0.2s;
}

.lang-sep {
  color: rgba(255,255,255,0.2);
  font-weight: 400;
}

.lang-active {
  color: var(--white);
}

@media (max-width: 900px) {
  .lang-toggle { margin-left: 0.5rem; }
}

/* ── KEYBOARD FOCUS ──────────────────────────────────────────
   Visible focus for everything interactive, on light and dark sections alike. */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--sage-light);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ── SKIP LINK ───────────────────────────────────────────────
   First tab stop on every page; hidden until focused. */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 200;
  padding: 0.75rem 1.25rem;
  background: var(--white);
  color: var(--navy-deep);
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: top 0.15s;
}

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

/* ── REDUCED MOTION ──────────────────────────────────────────
   Respect the OS setting: no entrance animations, no spinning ring. */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}