/* ═══════════════════════════════════════════════════════
   styles.css  —  Under Construction Home Page
   Company: Strytek Solution Inc.
   ═══════════════════════════════════════════════════════ */

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

:root {
  --clr-bg:          #07090f;
  --clr-surface:     #0f1420;
  --clr-surface-alt: #161d2e;
  --clr-accent:      #3b82f6;
  --clr-accent-dim:  rgba(59,130,246,.18);
  --clr-accent-glow: rgba(59,130,246,.35);
  --clr-text:        #f1f5f9;
  --clr-text-muted:  #94a3b8;
  --clr-text-faint:  #4b5563;
  --clr-border:      rgba(255,255,255,.08);
  --clr-overlay:     rgba(7,9,15,.45);

  --header-h:  60px;
  --footer-h:  52px;
  --radius-lg: 14px;
  --radius-md: 8px;

  --transition: .25s ease;
}

html, body {
  height: 100%;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  overflow-x: hidden;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-surface); }
::-webkit-scrollbar-thumb { background: var(--clr-accent-dim); border-radius: 3px; }

/* ════════════════════════════════
   HEADER
   ════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  z-index: 100;
  background: rgba(7,9,15,.9);
  border-bottom: 1px solid var(--clr-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--clr-text);
}

.header-tagline {
  font-size: .8rem;
  color: var(--clr-text-faint);
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ════════════════════════════════
   HERO WRAPPER
   ════════════════════════════════ */
.hero-wrapper {
  padding-top: var(--header-h);
  padding-bottom: var(--footer-h);
  min-height: 100vh;
}

/* ════════════════════════════════
   HERO IMAGE CONTAINER
   ════════════════════════════════ */
.hero-image-container {
  position: relative;
  width: 100%;
  height: calc(100vh - var(--header-h) - var(--footer-h));
  overflow: hidden;
  background: var(--clr-surface);
  cursor: default;
}

/* Actual hero image — hidden until src is set */
.hero-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}
.hero-image[src=""] { display: none; }

/* ── Placeholder shown while no image ── */
.hero-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  background: linear-gradient(
    135deg,
    var(--clr-surface)      0%,
    var(--clr-surface-alt) 50%,
    var(--clr-surface)     100%
  );
  color: var(--clr-text-faint);
  user-select: none;
  pointer-events: none;
  /* Subtle grid pattern */
  background-image:
    linear-gradient(135deg, var(--clr-surface) 0%, var(--clr-surface-alt) 50%, var(--clr-surface) 100%),
    repeating-linear-gradient(0deg, transparent, transparent 39px, var(--clr-border) 39px, var(--clr-border) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, var(--clr-border) 39px, var(--clr-border) 40px);
}

.placeholder-icon {
  width: 72px;
  height: 72px;
  opacity: .35;
  color: var(--clr-text-muted);
}

.hero-placeholder p {
  font-size: .9rem;
  letter-spacing: .04em;
  opacity: .5;
  text-align: center;
  padding: 0 1rem;
}
.hero-placeholder code {
  font-family: 'Courier New', monospace;
  font-size: .85em;
  background: rgba(255,255,255,.06);
  padding: .1em .35em;
  border-radius: 3px;
}

/* ── Central click zone ── */
.click-zone {
  position: absolute;
  /* Centered 30 % × 30 % box */
  left: 35%;
  top:  35%;
  width: 30%;
  height: 30%;
  cursor: pointer;
  /* Faint pulsing ring — visible hint without being obvious */
  border: 1px dashed rgba(59,130,246,.15);
  border-radius: var(--radius-md);
  transition: border-color var(--transition);
}
.click-zone:hover {
  border-color: rgba(59,130,246,.35);
}

/* ════════════════════════════════
   CONSTRUCTION OVERLAY
   ════════════════════════════════ */
.construction-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;        /* anchor content to the bottom */
  justify-content: center;
  padding-bottom: 3.5rem;
  /* Subtle bottom-fade — darkens the shelf where the card sits */
  background: linear-gradient(
    to bottom,
    transparent          0%,
    transparent          45%,
    rgba(7,9,15,.50)     72%,
    rgba(7,9,15,.70)    100%
  );
  pointer-events: none; /* let clicks pass through to click-zone */
}

.construction-content {
  text-align: center;
  padding: 2rem 2.75rem 2.25rem;
  pointer-events: none;
  /* Frosted glass card */
  background: rgba(7, 9, 15, .50);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 20px;
  box-shadow:
    0 8px 40px rgba(0,0,0,.55),
    inset 0 1px 0 rgba(255,255,255,.08);
  width: min(840px, 86vw);
}

/* Gears */
.gear-wrap {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto 1.25rem;
}

.gear {
  position: absolute;
  color: var(--clr-accent);
  opacity: .85;
  animation: spin 8s linear infinite;
  filter: drop-shadow(0 0 6px var(--clr-accent-glow));
}
.gear-large  { width: 72px; height: 72px; top: 4px; left: 4px; }
.gear-small  {
  width: 40px; height: 40px;
  top: 38px; left: 42px;
  animation-direction: reverse;
  animation-duration: 4s;
  opacity: .55;
}

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

/* Titles */
.uc-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: linear-gradient(135deg, #ffffff 20%, var(--clr-accent) 60%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: .6rem;
  filter: drop-shadow(0 2px 12px rgba(59,130,246,.4));
}

.uc-subtitle {
  font-size: clamp(.95rem, 2vw, 1.2rem);
  color: var(--clr-text-muted);
  letter-spacing: .08em;
  margin-bottom: 2rem;
}

/* Progress bar */
.progress-bar-wrap { display: flex; justify-content: center; }
.progress-bar-track {
  width: min(340px, 82vw);
  height: 7px;
  background: rgba(255,255,255,.1);
  border-radius: 99px;
  overflow: hidden;
  animation: track-glow 2s ease-in-out infinite 5s;
}
.progress-bar-fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--clr-accent), #a78bfa);
  border-radius: 99px;
  animation: load 4s ease-out 1s forwards;
  position: relative;
  overflow: hidden;
}
.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -80%;
  width: 60%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.55), transparent);
  animation: shimmer 2s ease-in-out infinite 3s;
}
@keyframes load { to { width: 65%; } }
@keyframes shimmer {
  0%   { left: -60%; }
  100% { left: 160%; }
}
@keyframes track-glow {
  0%, 100% { box-shadow: 0 0 4px rgba(59,130,246,.25); }
  50%       { box-shadow: 0 0 14px rgba(59,130,246,.65), 0 0 22px rgba(167,139,250,.3); }
}

/* ════════════════════════════════
   FOOTER
   ════════════════════════════════ */
.site-footer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--footer-h);
  background: rgba(7,9,15,.92);
  border-top: 1px solid var(--clr-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 100;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  height: 100%;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.copyright {
  font-size: .75rem;
  color: var(--clr-text-faint);
  letter-spacing: .05em;
}

/* ════════════════════════════════
   MODALS — shared base
   ════════════════════════════════ */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  padding: 1.5rem;
  /* Fade in/out */
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.modal-box {
  position: relative;
  background: var(--clr-surface-alt);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2.5rem 2rem;
  max-width: 540px;
  width: 100%;
  box-shadow: 0 24px 60px rgba(0,0,0,.6), 0 0 0 1px var(--clr-accent-dim);
  transform: translateY(20px) scale(.97);
  transition: transform var(--transition);
}
.modal-overlay.is-open .modal-box {
  transform: translateY(0) scale(1);
}

.modal-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 1.5rem;
  letter-spacing: .03em;
}

.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  background: rgba(255,255,255,.06);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  font-size: 1.4rem;
  line-height: 1;
  width: 34px; height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
}
.modal-close:hover { background: rgba(255,255,255,.14); color: var(--clr-text); }

/* ════════════════════════════════
   PUZZLE MODAL
   ════════════════════════════════ */
.puzzle-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 2.5rem 1rem;
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius-md);
  min-height: 220px;
  color: var(--clr-text-muted);
  text-align: center;
}

.puzzle-icon {
  width: 64px;
  height: 64px;
  color: var(--clr-accent);
  opacity: .5;
}

.puzzle-placeholder p { font-size: 1rem; }

.placeholder-note {
  font-size: .78rem;
  color: var(--clr-text-faint);
  font-style: italic;
  letter-spacing: .04em;
}

/* ════════════════════════════════
   GAME MODAL — Memory Match
   ════════════════════════════════ */
:root {
  --card-sz: 54px;
}

.game-modal-box {
  max-width: 760px;
  padding-bottom: 1.5rem;
  position: relative; /* anchor for end overlay */
}

/* ── HUD ── */
.match-hud {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: .9rem;
  font-size: .88rem;
  color: var(--clr-text-muted);
  flex-wrap: wrap;
}
.match-hud strong {
  color: var(--clr-text);
  font-variant-numeric: tabular-nums;
}
.hud-lives strong { color: #f87171; }
.match-restart-btn {
  margin-left: auto;
  padding: .35rem .9rem;
  background: var(--clr-accent-dim);
  border: 1px solid var(--clr-accent-glow);
  border-radius: var(--radius-md);
  color: var(--clr-accent);
  font-size: .8rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), box-shadow var(--transition);
}
.match-restart-btn:hover {
  background: rgba(59,130,246,.28);
  box-shadow: 0 0 10px var(--clr-accent-glow);
}

/* ── Grid wrapper (scrollable on tiny screens) ── */
.match-grid-wrap {
  overflow: auto;
  border-radius: var(--radius-md);
}
.match-grid {
  display: grid;
  grid-template-columns: repeat(10, var(--card-sz));
  gap: 4px;
  padding: 2px;
  width: max-content;
}

/* ── Individual card ── */
.match-card {
  width: var(--card-sz);
  height: var(--card-sz);
  perspective: 800px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.match-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform .45s cubic-bezier(.4, 0, .2, 1);
}
.match-card.is-flipped .match-card-inner,
.match-card.is-matched .match-card-inner {
  transform: rotateY(180deg);
}
.match-card-face {
  position: absolute;
  inset: 0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

/* Back face — circuit-grid pattern */
.match-card-back {
  background-image:
    linear-gradient(135deg, #161d2e 0%, #0f1420 100%),
    repeating-linear-gradient(0deg,  transparent, transparent 9px, rgba(59,130,246,.09) 9px, rgba(59,130,246,.09) 10px),
    repeating-linear-gradient(90deg, transparent, transparent 9px, rgba(59,130,246,.09) 9px, rgba(59,130,246,.09) 10px);
  border: 1px solid var(--clr-border);
  color: rgba(59,130,246,.3);
  font-size: 1.3rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.match-card:not(.is-flipped):not(.is-matched):hover .match-card-back {
  border-color: rgba(59,130,246,.4);
  box-shadow: 0 0 8px rgba(59,130,246,.2);
}

/* Front face — emoji */
.match-card-front {
  background: var(--clr-surface);
  border: 1px solid var(--clr-accent-dim);
  transform: rotateY(180deg);
  font-size: calc(var(--card-sz) * .52);
  line-height: 1;
  user-select: none;
}
.match-card.is-matched .match-card-front {
  background: rgba(59,130,246,.12);
  border-color: var(--clr-accent);
  box-shadow: 0 0 10px var(--clr-accent-glow);
  animation: match-pulse .5s ease-out;
}
@keyframes match-pulse {
  0%   { box-shadow: 0 0 0   rgba(59,130,246,0); }
  50%  { box-shadow: 0 0 22px rgba(59,130,246,.6); }
  100% { box-shadow: 0 0 10px var(--clr-accent-glow); }
}

/* Wrong-guess shake */
.match-card.is-wrong .match-card-inner {
  animation: card-shake .35s ease-out;
}
@keyframes card-shake {
  0%,100% { transform: rotateY(180deg) translateX(0); }
  25%      { transform: rotateY(180deg) translateX(-5px); }
  75%      { transform: rotateY(180deg) translateX(5px); }
}

/* ── End overlay (game over / win) ── */
.match-end-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(7,9,15,.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: var(--radius-lg);
  z-index: 10;
  animation: fade-in .3s ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.match-end-box {
  text-align: center;
  padding: 2.25rem 3rem;
  background: var(--clr-surface-alt);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 12px 40px rgba(0,0,0,.55);
}
.match-end-icon { font-size: 3rem; margin-bottom: .5rem; }
.match-end-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--clr-text);
  margin-bottom: .5rem;
}
.match-end-sub {
  font-size: .95rem;
  color: var(--clr-text-muted);
  margin-bottom: 1.5rem;
}
.match-end-score {
  font-size: .85rem;
  color: var(--clr-text-faint);
  margin-bottom: 1.25rem;
}

/* ════════════════════════════════
   RESPONSIVE
   ════════════════════════════════ */
@media (max-width: 640px) {
  :root { --card-sz: 30px; }
  .header-tagline { display: none; }
  .modal-box { padding: 2rem 1.25rem 1.5rem; }
  .game-modal-box { max-width: 100%; }
  .match-card-back { font-size: .7rem; }
  .match-end-box { padding: 1.5rem 1.75rem; }
  .click-zone {
    left: 25%; top: 30%;
    width: 50%; height: 40%;
  }
}