:root{
  --bg:#0b0f17;
  --fg:#e6f1ff;
  --muted:#94a3b8;
  --accent:#00ffaa;
  --accent-2:#097d1c;
  --accent-3:#097d1c;
  --card:#111827;
  --text-btn:#18eb0c;
  --tile-text-size: 1.45rem;
  --glass:rgba(17, 17, 17, 0.55);
  --shadow:0 10px 30px rgba(0,0,0,0.35);
  --terminal-font: 'Courier New', monospace;
  --clock-color: var(--accent);
  --badge-color:#ff4d4d;
  --tile-aspect-desktop: 3 / 1;
  --topbar-start: rgba(3,48,28,.85);
  --topbar-end:   rgba(3,48,28,.45);

  /* Derivados para bordes/halo de los tiles */
  --tile-green: var(--accent);
  --tile-green-rgb: 0, 255, 170;
}

*{ box-sizing:border-box }

/* Fondo */
html{ background-color: var(--bg); }

body{
  margin:0;
  position: relative;
  min-height: 100%;
  color:var(--fg);
  overflow-x:hidden;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,Helvetica,Arial,sans-serif;
  background: none;
}

body::before{
  content:"";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events:none;
  background:
    linear-gradient(180deg, rgba(11,15,23,0.40) 0%, rgba(15,23,42,0.75) 100%),
    radial-gradient(1200px 600px at 10% -10%, rgba(18,33,51,0.75), transparent),
    url('img/fondo.webp');
  background-size: auto, auto, cover;
  background-position: center, center, center;
  background-repeat: no-repeat, no-repeat, no-repeat;
}

/* ===== Topbar ===== */
.topbar{
  position: sticky; top:0; z-index:40;
  display:flex; justify-content:space-between; align-items:center;
  gap:8px; padding:10px 16px;
  background: linear-gradient(180deg, var(--topbar-start), var(--topbar-end));
  backdrop-filter:saturate(130%) blur(8px);
  border-bottom:1px solid rgba(255,255,255,0.06);
}

/* Marca izquierda con efecto 3D/neón */
.brand{
  font-family: var(--terminal-font);
  font-weight: 700;
  letter-spacing: .08em;
  line-height: 1;
  user-select: none;
}
.brand span{
  display:inline-block;
  font-size: clamp(20px, 3.0vw, 24px);
  color: var(--accent);
  text-shadow:
    0 1px 0 #063a23,
    0 2px 0 #063a23,
    0 3px 0 #063a23,
    0 4px 0 #063a23,
    0 5px 0 #063a23,
    0 6px 8px rgba(0,0,0,.35),
    0 0 10px rgba(0,255,128,.55),
    0 0 18px rgba(0,255,128,.35);
  -webkit-text-stroke: .4px rgba(0,0,0,.35);
  padding: 2px 4px;
  transform: translateZ(0);
}
.brand span:hover{
  text-shadow:
    0 1px 0 #084c2c, 0 2px 0 #084c2c, 0 3px 0 #084c2c, 0 4px 0 #084c2c, 0 5px 0 #084c2c,
    0 6px 10px rgba(0,0,0,.4),
    0 0 14px rgba(0,255,128,.7),
    0 0 26px rgba(0,255,128,.45);
}

.controls{ display:flex; gap:10px; }

/* Botones icon-only */
.controls button{
  appearance:none;
  background: transparent;
  border: none;
  box-shadow: none;
  color: var(--accent);
  padding: 6px;
  border-radius: 9999px;
  font-size: 22px;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform .12s ease, text-shadow .12s ease, box-shadow .12s ease;
}
.controls button:hover{
  text-shadow: 0 0 10px rgba(0,255,128,.85);
  transform: translateY(-1px);
}
.controls button:active{ transform: translateY(0); }
.controls button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.controls button[aria-pressed="true"]{
  box-shadow: 0 0 0 2px rgba(0,255,128,.55), 0 0 16px rgba(0,255,128,.35);
}

main{ padding:24px; max-width:1100px; margin:0 auto }

/* ===== Grid y tiles ===== */
.grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap:16px;
}
@media (max-width: 560px){ .grid{ grid-template-columns: 1fr; } }

.tile{
  position:relative;
  display:flex; align-items:center; justify-content:center;
  min-height: unset;
  aspect-ratio: var(--tile-aspect-desktop, 3 / 1);
  border-radius:14px; overflow:hidden;
  text-decoration:none;
  background:
    linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.35) 60%, rgba(0,0,0,0.8) 100%),
    radial-gradient(400px 180px at 50% 50%, rgba(var(--tile-green-rgb), 0.08), transparent);
  border:1px solid rgba(var(--tile-green-rgb), .28);
  box-shadow:
    0 0 0 1px rgba(var(--tile-green-rgb), .16) inset,
    0 0 18px rgba(var(--tile-green-rgb), .10);
  transition: transform .12s ease, box-shadow .12s ease, border-color .12s ease;
}
.tile:hover{
  transform: translateY(-1px);
  border-color: rgba(var(--tile-green-rgb), .34);
  box-shadow:
    0 0 0 1px rgba(var(--tile-green-rgb), .22) inset,
    0 0 22px rgba(var(--tile-green-rgb), .14);
}
@media (max-width: 600px){
  .tile{ aspect-ratio: 7 / 2; }
}
.tile:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Texto del tile */
.tile,
.tile:link,
.tile:visited,
.tile:hover,
.tile:active,
.tile:focus {
  color: var(--text-btn, var(--fg));
  text-decoration: none;
}
.tile > span{
  color: inherit;
  position:relative; z-index:2;
  padding:6px 8px;
  font-weight:600;
  font-family:var(--terminal-font);
  text-align:center;
  text-shadow:none;
  font-size: var(--tile-text-size, .95rem);
  background: rgba(0,0,0,.28);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  border-radius: 10px;
}
.tile > span .badge{ color: var(--badge-color); }

/* Canvas Matrix en tile */
.tile canvas.matrix-canvas{
  position:absolute; inset:0; width:100%; height:100%; display:block;
  filter:contrast(125%) saturate(120%);
}

/* Welcome overlay */
.welcome{
  position:fixed; inset:0; z-index:50; display:grid; place-items:center;
  background:radial-gradient(1200px 600px at 10% -10%, #122133, transparent),
             linear-gradient(180deg, #0b0f17 0%, #0f172a 100%);
  transition:opacity .6s ease, visibility .6s ease;
}
.welcome.hidden{ opacity:0; visibility:hidden; pointer-events:none; }
.welcome .inner{
  position:relative; z-index:2; text-align:center;
  padding:24px; border-radius:16px; background:var(--glass);
  border:1px solid rgba(0,255,128,.18);
  box-shadow:0 10px 30px rgba(0,0,0,.35), 0 0 24px rgba(0,255,128,.12);
  backdrop-filter: blur(8px) saturate(120%);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
}
#welcome-canvas{ position:absolute; inset:0; width:100%; height:100%; display:block; }

.btn{
  appearance:none; border:none; cursor:pointer;
  padding:10px 14px; border-radius:1px; font-weight:600;
  background:linear-gradient(90deg, var(--accent), var(--accent-2));
  color:#0b0f17;
  box-shadow:var(--shadow);
  font-family:var(--terminal-font);
  text-decoration:none;
}

/* Footer */
footer{
  opacity:1;
  font-size:.50rem;
  padding:24px;
  text-align:center;
  font-family:var(--terminal-font);
  color:#00ff80;
  letter-spacing:.02em;
  text-shadow:0 0 6px rgba(0,255,128,.9), 0 0 12px rgba(0,255,128,.6), 0 0 24px rgba(0,255,128,.35);
}

/* ===== Reloj grande ===== */
.hero{
  display:flex; justify-content:center; align-items:center;
  padding:8px 16px 4px;
}
.hero-clock{ text-align:center }
.hero-time{
  font-family:var(--terminal-font);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:clamp(28px, 10vw, 72px);
  letter-spacing:.05em;
  color:var(--clock-color);
  text-shadow:none;
}
.hero-date{
  margin-top:6px;
  font-size:.95rem;
  color:var(--clock-color);
  opacity:.95;
  text-shadow:none;
  font-family:var(--terminal-font);
  letter-spacing:.05em;
}

/* Badges */
.badge{
  font-size: .9em;
  font-weight: 700;
  margin-left: .25em;
  letter-spacing: .02em;
  color: var(--badge-color);
}
.badge.beta { --badge-color: #ff4d4d; }
.badge.dev  { --badge-color: #ffd166; }
.badge.new  { --badge-color: #5eead4; }

/* ===== Terminal de citas ===== */
.term{
  margin: 10px auto 22px;
  width: min(92vw, 900px);
  background: #000;
  border: 1px solid rgba(0,255,128,.25);
  border-radius: 1px;
  box-shadow:
    0 0 0 1px rgba(0,255,128,.12) inset,
    0 10px 30px rgba(0,0,0,.35),
    0 0 24px rgba(0,255,128,.08);
  padding: 14px 16px;
}
.typewriter{
  margin: 0;
  max-width: 100%;
  text-align: left;
  font-family: var(--terminal-font);
  font-size: clamp(.95rem, 2.2vw, 1.15rem);
  letter-spacing: .03em;
  color: var(--accent);
  opacity: .95;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  user-select: none;
}
.typewriter::after{
  content: "▌";
  margin-left: .15em;
  animation: blink 1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce){
  .typewriter::after{ animation: none; }
}
.typewriter.with-prompt::before{
  content: "~$ ";
  color: var(--accent);
  opacity: .95;
  margin-right: .25em;
}

/* === Panel de Ajustes === */
.settings{
  position:fixed; inset:0; z-index:60; display:grid; place-items:center;
  background: rgba(0,0,0,.5);
  opacity:1; visibility:visible;
  transition: opacity .2s ease;
}
.settings.hidden{
  opacity:0; visibility:hidden; pointer-events:none;
}
.settings-inner{
  min-width:290px; max-width:420px; width:min(92vw, 420px);
  display:grid; gap:12px; padding:18px;
  border-radius:14px; background:var(--glass);
  backdrop-filter: blur(8px) saturate(120%); -webkit-backdrop-filter: blur(8px) saturate(120%);
  border:1px solid rgba(0,255,128,.18); box-shadow: var(--shadow);
  color: var(--fg);
}
.settings-inner h3{ margin:0 0 6px; font-family:var(--terminal-font); }
.settings-inner label{ display:grid; gap:6px; font-size:.95rem; }
.settings-inner .row{ display:flex; align-items:center; gap:8px; }
.settings-inner hr{ border:none; border-top:1px solid rgba(255,255,255,.12); margin:4px 0; }
.settings-inner input[type="range"]{ width:100%; accent-color: var(--accent); }
.settings-inner input[type="color"]{
  width:100%; height:36px; border-radius:8px;
  border:1px solid rgba(255,255,255,.15); background:#111; padding:0;
}
.settings-inner .buttons{ display:flex; gap:8px; justify-content:flex-end; }

/* === Modal de desbloqueo (clave de acceso) === */
.modal{
  position: fixed;
  inset: 0;
  z-index: 70;                 /* por encima de Ajustes (60) */
  display: grid;
  place-items: center;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(2px);
  transition: opacity .2s ease;
}
.modal.hidden{
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}
.modal-inner{
  width: min(92vw, 420px);
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 14px;
  background: var(--glass);
  color: var(--fg);
  border: 1px solid rgba(0,255,128,.18);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px) saturate(120%);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
}
.modal-inner h3{
  margin: 0 0 6px;
  font-family: var(--terminal-font);
  letter-spacing: .06em;
  color: var(--accent);
}
/* Filas del modal */
.modal .row{
  display: grid;
  gap: 6px;
  font-size: .95rem;
}
/* Campo contraseña + botón mostrar */
.input-pass{
  display: flex;
  align-items: stretch;
  gap: 8px;
  padding: 6px;
  border-radius: 10px;
  background: #0b0f17;
  border: 1px solid rgba(255,255,255,.12);
  box-shadow: 0 0 0 1px rgba(0,255,128,.08) inset;
}
.input-pass input{
  flex: 1;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--fg);
  font-family: var(--terminal-font);
  font-size: 1rem;
  padding: 6px 8px;
}
.input-pass button{
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  padding: 0 8px;
  border-radius: 8px;
}
.input-pass button:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
/* Error */
.modal .error{
  min-height: 1.1em;
  font-size: .92rem;
  color: #ff6b6b;
}
/* Botonera */
.modal .buttons{
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
/* Accesibilidad */
.modal input:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
/* ================== Botones neón dinámicos ================== */
:root{
  --btn-neo-h: 40px;
  --btn-neo-radius: 12px;
}

.btn-neo{
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  height: var(--btn-neo-h);
  padding: 0 18px;
  border: 0;
  border-radius: var(--btn-neo-radius);
  cursor: pointer;
  font: 600 1rem var(--terminal-font);
  color: #0b0f17;
  background: linear-gradient(120deg, var(--accent) 0%, #3bffb5 50%, #00d07a 100%);
  background-size: 200% 200%;
  transition: transform .12s ease, box-shadow .12s ease, background-position .35s ease;
  box-shadow:
    0 8px 24px rgba(0, 255, 128, .15),
    inset 0 0 0 1px rgba(0,0,0,.15);
  overflow: hidden;
  user-select: none;
}

/* Glow externo suave */
.btn-neo::before{
  content:"";
  position:absolute; inset:-2px;
  border-radius:inherit;
  background: radial-gradient(60% 100% at 50% 100%, rgba(0,255,128,.18), transparent 70%);
  pointer-events:none;
  filter: blur(8px);
  opacity:.7;
}

/* “Sheen” (destello) en hover */
.btn-neo::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(120deg, transparent 40%, rgba(255,255,255,.35) 50%, transparent 60%);
  transform: translateX(-120%);
  transition: transform .6s ease;
  pointer-events:none;
  mix-blend-mode: screen;
}

.btn-neo:hover{
  transform: translateY(-1px);
  background-position: 100% 0%;
  box-shadow:
    0 10px 28px rgba(0,255,128,.22),
    inset 0 0 0 1px rgba(0,0,0,.15);
}
.btn-neo:hover::after{ transform: translateX(120%); }

.btn-neo:active{ transform: translateY(0); }
.btn-neo:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }

/* Variante secundaria “ghost” (ideal para Cancelar) */
.btn-neo--ghost{
  background: rgba(0,0,0,.25);
  color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(0,255,128,.35), 0 0 18px rgba(0,255,128,.08);
}
.btn-neo--ghost::before{ background: none; }
.btn-neo--ghost:hover{
  box-shadow: inset 0 0 0 1px rgba(0,255,128,.55), 0 0 22px rgba(0,255,128,.12);
}

/* Ripple al hacer click (se activa vía clase .ripple en JS) */
.btn-neo.ripple::after{
  content:"";
  position:absolute;
  left: var(--rx, 50%); top: var(--ry, 50%);
  width: 20px; height: 20px;
  transform: translate(-50%,-50%) scale(0);
  border-radius: 999px;
  background: rgba(255,255,255,.45);
  animation: btnRipple .6s ease-out forwards;
  mix-blend-mode: screen;
}
@keyframes btnRipple{
  to{ transform: translate(-50%,-50%) scale(12); opacity: 0; }
}

/* Respeta reduced-motion */
@media (prefers-reduced-motion: reduce){
  .btn-neo, .btn-neo::after{ transition: none; }
}