/* ============================================================
   Áramóra — stíluslap

   Vizuális irány: villamosipari műszerfal. A régi bakelit
   fogyasztásmérő sötét, zöldes-fekete lapja, rajta világító
   számokkal, egy halvány, zöldes-szürke számlapapíron.

   A színskála szándékosan tompított: nem dashboard-neon, hanem
   moha, jelzőlámpa-borostyán és oxidvörös. A rézzöld a kattintható
   elemek színe.

   Betű: IBM Plex. Nem divatból — a magyar ő és ű kettős
   ékezetet igényel, amit rengeteg display-betűtípus umlautként
   rajzol vagy el se rajzol. A Plex helyesen kezeli, és a Mono
   számjegyei úgy néznek ki, mint egy mérőóra számlapja.
   ============================================================ */

:root {
  --paper:   #E6E7E1;
  --card:    #F5F5F1;
  --line:    #CFD2CA;
  --ink:     #14181A;
  --ink-2:   #5A6260;
  --ink-3:   #8B9390;

  --panel:   #171E1C;
  --panel-2: #232C29;
  --panel-3: #5B6762;

  --cheap:   #86A94E;
  --mid:     #C8963C;
  --dear:    #A63E2B;
  --copper:  #3E7178;
  --copper-lit: #55949D;

  --gap: 1.5rem;
  --radius: 3px;
  --maxw: 62rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "IBM Plex Sans", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  /* halvány vízszintes rácsvonalak, mint egy régi számlaűrlapon */
  background-image: repeating-linear-gradient(
    to bottom, transparent 0 27px, rgba(20,24,26,.035) 27px 28px
  );
}

.num {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "zero" 1;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 1.25rem; }

/* ---------------------------------------------------- fejléc */
.masthead {
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.masthead .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; flex-wrap: wrap; padding-block: .9rem;
}
.wordmark {
  font-family: "IBM Plex Sans Condensed", "IBM Plex Sans", sans-serif;
  font-weight: 600; font-size: 1.3rem; letter-spacing: .01em;
  display: flex; align-items: baseline; gap: .5rem; margin: 0;
}
.wordmark span {
  font-family: "IBM Plex Mono", monospace;
  font-size: .68rem; font-weight: 400; color: var(--ink-2);
  letter-spacing: .06em; text-transform: uppercase;
}

/* tarifaválasztó — szegmentált kapcsoló, mint egy műszer üzemmódváltója */
.tariff { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.tariff > label {
  font-size: .72rem; text-transform: uppercase; letter-spacing: .07em;
  color: var(--ink-2); font-weight: 500;
}
.segmented { display: flex; border: 1px solid var(--ink); border-radius: var(--radius); overflow: hidden; }
.segmented button {
  font: inherit; font-size: .8rem; padding: .34rem .7rem;
  background: transparent; color: var(--ink); border: 0;
  border-right: 1px solid var(--line); cursor: pointer;
  transition: background .12s ease, color .12s ease;
}
.segmented button:last-child { border-right: 0; }
.segmented button:hover { background: rgba(62,113,120,.12); }
.segmented button[aria-pressed="true"] { background: var(--ink); color: var(--card); }
.segmented button:focus-visible { outline: 2px solid var(--copper); outline-offset: -2px; }

/* ---------------------------------------------------- állapotkijelző */
.readout { padding-block: 2rem 1.1rem; }
.readout-grid {
  display: flex; flex-wrap: wrap; gap: .4rem 1.2rem;
  align-items: baseline; justify-content: center;
  text-align: center;
}
.verdict {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: clamp(2.1rem, 7vw, 3.4rem); font-weight: 600;
  line-height: .95; letter-spacing: -.01em; margin: 0;
  text-transform: uppercase;
}
.verdict[data-level="cheap"]     { color: #5E7C31; }
.verdict[data-level="normal"]    { color: #8E6A20; }
.verdict[data-level="expensive"] { color: var(--dear); }
.price-now {
  font-family: "IBM Plex Mono", monospace;
  font-size: clamp(1.5rem, 5vw, 2.3rem); font-weight: 500;
  line-height: 1; white-space: nowrap;
}
.price-now small { font-size: .46em; font-weight: 400; color: var(--ink-2); }
.readout-meta {
  flex: 0 0 100%;
  font-size: .85rem; color: var(--ink-2);
  display: flex; gap: .35rem 1.4rem; flex-wrap: wrap; margin-top: .5rem;
  justify-content: center;
}
.readout-meta b { font-weight: 500; color: var(--ink); }

/* ---------------------------------------------------- műszerfal */
.panel {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 1rem 1rem .55rem 2.75rem;
  position: relative;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06), 0 1px 3px rgba(0,0,0,.18);
}
.panel-head {
  margin-left: -1.75rem;
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; margin-bottom: .85rem;
}
.panel-title {
  font-family: "IBM Plex Mono", monospace; font-size: .7rem;
  letter-spacing: .1em; text-transform: uppercase; color: var(--panel-3);
  margin: 0;
}
.daynav { display: flex; gap: .25rem; }
.daynav button {
  font: inherit; font-size: .95rem; line-height: 1;
  width: 1.9rem; height: 1.7rem; border-radius: 2px; cursor: pointer;
  background: transparent; color: #93A29D; border: 1px solid var(--panel-2);
  transition: color .12s ease, border-color .12s ease, background .12s ease;
}
.daynav button:hover:not(:disabled) { color: var(--paper); border-color: #5C6A65; background: rgba(255,255,255,.04); }
.daynav button:disabled { opacity: .28; cursor: not-allowed; }
.daynav button:focus-visible { outline: 2px solid var(--copper-lit); outline-offset: 1px; }

/* A hét miniatűr görbéi. Ez egyszerre navigáció és grafika: egy pillantással
   látszik, hogy a hétvége laposabb, és melyik napon volt esti kilengés.
   Mind közös skálán fut, különben a napok nem lennének összemérhetők. */
.daystrip {
  margin-left: -1.75rem;
  display: flex; gap: .3rem; margin-top: .9rem;
  padding-top: .8rem; border-top: 1px solid var(--panel-2);
}
.daycard {
  flex: 1 1 0; min-width: 0; padding: .3rem .25rem .28rem;
  background: transparent; border: 1px solid transparent; border-radius: 2px;
  cursor: pointer; font: inherit; color: var(--panel-3);
  display: flex; flex-direction: column; gap: .22rem; align-items: stretch;
  transition: background .12s ease, border-color .12s ease, color .12s ease;
}
.daycard:hover:not(:disabled) { background: rgba(255,255,255,.045); color: #9AA8A3; }
.daycard[aria-current="true"] {
  border-color: #5C6A65; background: rgba(255,255,255,.07); color: var(--paper);
}
.daycard:disabled { opacity: .3; cursor: not-allowed; }
.daycard:focus-visible { outline: 2px solid var(--copper-lit); outline-offset: 1px; }
.daycard svg { display: block; width: 100%; height: 26px; }
.d-short { display: none; }
.daycard b {
  font-family: "IBM Plex Mono", monospace; font-size: .62rem; font-weight: 400;
  letter-spacing: .02em; text-align: center; white-space: nowrap;
  text-overflow: ellipsis; overflow: hidden;
}
.daycard[aria-current="true"] b { font-weight: 500; }

.daystats {
  margin: .7rem 0 0; font-size: .78rem; color: var(--ink-2);
  display: flex; gap: 1.3rem; flex-wrap: wrap;
}
.daystats b { font-weight: 500; color: var(--ink); }

/* a 96 cella — a nap valódi szerkezete, nem simított görbe.
   A piac diszkrét: 96 rögzített negyedóra, mindegyiknek egy ára van.
   A vonaldiagram olyan folytonosságot sugallna, ami nem létezik. */
.strip {
  position: relative; height: 200px; margin-bottom: 6px;
  display: flex; align-items: flex-end; gap: 1px;
}
.cell {
  flex: 1 1 0; min-width: 0; border-radius: 1.5px 1.5px 0 0;
  background: var(--panel-2);
  background-image: linear-gradient(to bottom, rgba(255,255,255,.16), rgba(0,0,0,.14));
  transition: filter .12s ease, opacity .12s ease;
  cursor: crosshair;
}
.cell[data-level="cheap"]     { background: #4E6B2C; }
.cell[data-level="normal"]    { background: #4B534C; }
.cell[data-level="expensive"] { background: #7A2E20; }
.strip.has-selection .cell { opacity: .38; }
.strip.has-selection .cell.lit { opacity: 1; }
.cell.lit[data-level="cheap"]     { background: var(--cheap); box-shadow: 0 0 9px rgba(134,169,78,.6); }
.cell.lit[data-level="normal"]    { background: var(--mid);   box-shadow: 0 0 9px rgba(200,150,60,.55); }
.cell.lit[data-level="expensive"] { background: var(--dear);  box-shadow: 0 0 9px rgba(166,62,43,.5); }
.cell:hover { filter: brightness(1.5); }

/* referenciavonal: ennyit fizetsz MA. A görbe alatta nyereség, felette veszteség.
   Ez az oldal tézise egyetlen grafikai elemben. */
.refline {
  position: absolute; left: 0; right: 0; height: 0;
  border-top: 1px dashed #6E7C77; pointer-events: none;
}
.refline b {
  position: absolute; right: 0; top: -1.35rem;
  font-family: "IBM Plex Mono", monospace; font-size: .66rem; font-weight: 400;
  color: #9AA8A3; background: var(--panel); padding: 0 .3rem;
  letter-spacing: .03em;
}
/* Vízszintes rácsvonalak. Enélkül a görbe magassága összehasonlíthatatlan:
   szép, de nem lehet leolvasni belőle semmit. */
.gridline {
  position: absolute; left: 0; right: 0; height: 0;
  border-top: 1px solid rgba(255,255,255,.055); pointer-events: none;
}
.gridline b {
  position: absolute; right: 100%; top: -.62rem; margin-right: .5rem;
  font-family: "IBM Plex Mono", monospace; font-size: .6rem; font-weight: 400;
  color: #5D6A64; white-space: nowrap;
}

/* Negatív tőzsdei ár: külön jelölés az alapvonal alatt. A bruttó ár ilyenkor
   is pozitív a rendszerhasználati díj miatt, ezért a magasságból nem látszana. */
.negmark {
  position: absolute; bottom: -5px; height: 3px; border-radius: 1px;
  background: var(--copper-lit); pointer-events: none;
}
.neg-swatch {
  display: inline-block; width: .6rem; height: .25rem; border-radius: 1px;
  background: var(--copper-lit); margin-right: .35rem; vertical-align: middle;
}

.nowline {
  position: absolute; top: 0; bottom: 0; width: 1px;
  background: #E8E4D6; pointer-events: none;
  box-shadow: 0 0 6px rgba(232,228,214,.4);
}
.nowline::after {
  content: ""; position: absolute; top: -4px; left: -3.5px;
  border-left: 4px solid transparent; border-right: 4px solid transparent;
  border-top: 5px solid #E8E4D6;
}

.axis {
  display: flex; margin-top: .3rem;
  font-family: "IBM Plex Mono", monospace; font-size: .62rem;
  color: var(--panel-3); letter-spacing: .04em;
}
.axis span { flex: 1 1 0; text-align: left; }
.axis span:last-child { flex: 0 0 auto; }

.tip {
  position: absolute; transform: translate(-50%, -100%);
  background: var(--card); color: var(--ink);
  font-family: "IBM Plex Mono", monospace; font-size: .72rem;
  padding: .25rem .5rem; border-radius: 2px; white-space: nowrap;
  pointer-events: none; opacity: 0; transition: opacity .1s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,.3); z-index: 5;
}
.tip.on { opacity: 1; }

.legend {
  display: flex; gap: 1rem; flex-wrap: wrap; margin-top: .6rem;
  font-family: "IBM Plex Mono", monospace; font-size: .66rem; color: var(--ink-2);
}
.legend i { display: inline-block; width: .6rem; height: .6rem; border-radius: 1px; margin-right: .35rem; }

/* ---------------------------------------------------- szekciók */
.section { padding-block: 2.4rem; border-top: 1px solid var(--line); }
.section > .wrap > h2 {
  font-family: "IBM Plex Sans Condensed", sans-serif;
  font-size: 1.45rem; font-weight: 600; margin: 0 0 .2rem;
  letter-spacing: -.005em;
}
.section > .wrap > p.lede { margin: 0 0 1.3rem; color: var(--ink-2); max-width: 46ch; }

/* ---------------------------------------------------- űrlapok */
.controls { display: flex; gap: .8rem; flex-wrap: wrap; align-items: flex-end; }
.field { display: flex; flex-direction: column; gap: .28rem; min-width: 0; }
.field > label {
  font-size: .7rem; text-transform: uppercase; letter-spacing: .07em;
  color: var(--ink-2); font-weight: 500;
}
.field select, .field input {
  font: inherit; font-size: .92rem; padding: .48rem .6rem;
  border: 1px solid var(--ink-3); border-radius: var(--radius);
  background: var(--card); color: var(--ink); min-width: 9rem;
}
.field select:focus-visible, .field input:focus-visible {
  outline: 2px solid var(--copper); outline-offset: 1px; border-color: var(--copper);
}
.btn {
  font: inherit; font-size: .92rem; font-weight: 500;
  padding: .5rem 1.1rem; border-radius: var(--radius); cursor: pointer;
  background: var(--copper); color: #fff; border: 1px solid var(--copper);
  transition: background .12s ease;
}
.btn:hover { background: #345F65; }
.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn[disabled] { opacity: .5; cursor: default; }

/* ---------------------------------------------------- eredménysorok */
.results { margin-top: 1.4rem; display: flex; flex-direction: column; gap: .5rem; }
.result {
  display: grid; grid-template-columns: auto 1fr auto; gap: .6rem 1.2rem;
  align-items: baseline; padding: .8rem .9rem;
  background: var(--card); border: 1px solid var(--line);
  border-left: 3px solid var(--cheap); border-radius: var(--radius);
  cursor: pointer; text-align: left; width: 100%; font: inherit;
  transition: border-color .12s ease, transform .1s ease;
}
.result:hover { border-color: var(--ink-3); border-left-color: var(--copper); }
.result[aria-current="true"] { border-left-color: var(--copper); background: #EDF1F0; }
.result:focus-visible { outline: 2px solid var(--copper); outline-offset: 1px; }
.result-time {
  font-family: "IBM Plex Mono", monospace; font-size: 1.02rem; font-weight: 500;
  white-space: nowrap;
}
.result-rate { font-family: "IBM Plex Mono", monospace; font-size: .82rem; color: var(--ink-2); }
.result-save {
  font-family: "IBM Plex Mono", monospace; font-size: .95rem; font-weight: 500;
  text-align: right; white-space: nowrap; color: #4C6A28;
}
.result-save.loss { color: var(--dear); }
.result-note { grid-column: 1 / -1; font-size: .8rem; color: var(--ink-2); margin: 0; }

/* ---------------------------------------------------- kalkulátor kimenet */
.calc-out {
  margin-top: 1.2rem; padding: 1rem 1.1rem; background: var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: 1rem;
}
.stat > dt {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .07em;
  color: var(--ink-2); margin-bottom: .18rem;
}
.stat > dd {
  margin: 0; font-family: "IBM Plex Mono", monospace;
  font-size: 1.28rem; font-weight: 500; line-height: 1.1;
}
.stat > dd small { font-size: .55em; font-weight: 400; color: var(--ink-2); }

/* ---------------------------------------------------- feliratkozás */
.subscribe { display: flex; gap: .7rem; flex-wrap: wrap; align-items: flex-end; }
.formnote { font-size: .82rem; color: var(--ink-2); margin: .7rem 0 0; max-width: 52ch; }
.formnote[role="alert"] { color: var(--dear); font-weight: 500; }
.formnote.ok { color: #4C6A28; font-weight: 500; }

/* ---------------------------------------------------- állapotsávok */
.banner {
  padding: .55rem 1.25rem; font-size: .82rem;
  background: #4A3F1E; color: #E8DCB8; text-align: center;
}
.banner a { color: inherit; }
.banner[hidden] { display: none; }

/* ---------------------------------------------------- lábléc */
.foot {
  border-top: 1px solid var(--line); padding-block: 1.8rem 3rem;
  font-size: .8rem; color: var(--ink-2);
}
.foot p { margin: 0 0 .55rem; max-width: 62ch; }
.foot a { color: var(--copper); }
.foot .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem,1fr)); gap: 1.4rem; }
.foot h3 {
  font-size: .68rem; text-transform: uppercase; letter-spacing: .08em;
  color: var(--ink); margin: 0 0 .4rem;
}

code {
  font-family: "IBM Plex Mono", monospace; font-size: .84em;
  background: rgba(20,24,26,.07); padding: .1em .35em; border-radius: 2px;
}

/* ---------------------------------------------------- mobil */
@media (max-width: 40rem) {
  .strip { height: 132px; }
  .readout-grid { flex-direction: column; align-items: center; gap: .2rem; }
  .price-now { text-align: center; }
  .readout-meta { gap: .3rem 1rem; }
  .field select, .field input { min-width: 0; width: 100%; }
  .field { flex: 1 1 100%; }
  .controls .btn { width: 100%; }
  .axis span:nth-child(even) { visibility: hidden; }
  .daycard svg { height: 20px; }
  .d-short { display: none; }
.daycard b { font-size: .54rem; }
  .daystrip { gap: .15rem; }
  .daystats { gap: .8rem; font-size: .72rem; }
  .ref-txt, .d-wd { display: none; }
  .d-short { display: inline; }
  .refline b { font-size: .6rem; }
  .daycard { padding: .25rem .1rem .24rem; }
  .panel-title { font-size: .62rem; letter-spacing: .06em; }
  .panel { padding: .8rem .6rem .5rem 2.1rem; }
  .panel-head, .daystrip { margin-left: -1.5rem; }
  .result { grid-template-columns: 1fr auto; }
  .result-rate { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}