/* Farben und Schrift wie die evcc-Oberfläche (siehe src/ui.cpp) */
@font-face {
  font-family: "Montserrat";
  src: url("fonts/Montserrat-Medium.ttf") format("truetype");
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("fonts/Montserrat-SemiBold.ttf") format("truetype");
  font-weight: 600;
  font-display: swap;
}
@font-face {
  font-family: "Montserrat";
  src: url("fonts/Montserrat-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

:root {
  --navy: #010322;
  --navy-box: #151630;
  --navy-line: #2a2c4c;
  --ink: #28293e;
  --paper: #f3f3f7;
  --white: #ffffff;
  --muted: #6e6f7c;
  --muted-dark: #b5b6c3;
  --green: #0fde41;
  --green-text: #078a2c;
  --radius: 28px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Montserrat", system-ui, sans-serif;
  font-weight: 500;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

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

.wrap {
  width: min(1120px, 100% - 48px);
  margin-inline: auto;
}

h1,
h2,
h3 {
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.eyebrow a {
  text-decoration-color: rgba(15, 222, 65, 0.6);
  text-underline-offset: 3px;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(1200px 600px at 75% 30%, #0b1046 0%, var(--navy) 60%);
  color: var(--white);
  padding-bottom: 96px;
}

.hero .eyebrow {
  color: var(--muted-dark);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
}

.brand svg {
  width: 26px;
  height: 26px;
  fill: var(--green);
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 15px;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted-dark);
  transition: color 0.2s;
}

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

.nav-links .gh {
  color: var(--white);
  border: 1px solid var(--navy-line);
  border-radius: 999px;
  padding: 6px 16px;
  margin: -7px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
  padding-top: 48px;
}

.hero h1 {
  font-size: clamp(40px, 5.4vw, 66px);
}

.hero h1 span {
  color: var(--green);
}

.lead {
  font-size: 19px;
  color: var(--muted-dark);
  max-width: 34em;
  margin: 26px 0 34px;
}

.lead strong {
  color: var(--white);
  font-weight: 600;
}

.cta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  padding: 15px 28px;
  font: inherit;
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}

.btn:active {
  transform: scale(0.97);
}

.btn.primary {
  background: var(--green);
  color: var(--navy);
  box-shadow: 0 10px 30px -10px rgba(15, 222, 65, 0.7);
}

.btn.primary:hover {
  box-shadow: 0 14px 36px -8px rgba(15, 222, 65, 0.85);
}

.btn.ghost {
  color: var(--white);
  border: 1px solid var(--navy-line);
}

.btn.ghost:hover {
  background: var(--navy-box);
}

.btn.big {
  width: 100%;
  padding: 18px 28px;
  font-size: 18px;
}

.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  list-style: none;
  padding: 0;
  margin: 42px 0 0;
  color: var(--muted-dark);
  font-size: 15px;
}

.facts b {
  color: var(--white);
  font-weight: 700;
}

/* Gerät: weißer Rahmen wie das ESP32-4848S040C */
.device-stage {
  position: relative;
  margin: 0;
  display: grid;
  justify-items: center;
}

.glow {
  position: absolute;
  inset: 8% 6% 14%;
  background: radial-gradient(circle, rgba(15, 222, 65, 0.28), transparent 65%);
  filter: blur(40px);
  animation: breathe 6s ease-in-out infinite;
}

@keyframes breathe {
  50% {
    opacity: 0.55;
    transform: scale(0.94);
  }
}

.device {
  position: relative;
  width: min(440px, 100%);
  aspect-ratio: 1;
  padding: 7.5%;
  border-radius: 9%;
  background: linear-gradient(145deg, #2b2d45, #0d0e22 60%);
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.08) inset,
    0 2px 0 rgba(255, 255, 255, 0.12) inset,
    0 40px 80px -20px rgba(0, 0, 0, 0.8),
    0 0 0 1px #000;
  transform: perspective(1400px) rotateY(-9deg) rotateX(4deg);
  transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.device:hover {
  transform: perspective(1400px) rotateY(0) rotateX(0);
}

.device img {
  width: 100%;
  border-radius: 2px;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.6);
  transition: opacity 0.35s;
}

.device img.fade {
  opacity: 0;
}

.device-stage figcaption {
  margin-top: 26px;
  font-size: 14px;
  color: var(--muted-dark);
  min-height: 1.6em;
}

/* ---------- Features ---------- */

.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: -56px;
  position: relative;
}

.features article {
  background: var(--white);
  border-radius: var(--radius);
  padding: 30px 30px 26px;
  box-shadow: 0 20px 50px -30px rgba(1, 3, 34, 0.35);
}

.ico {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #e6fbec;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}

.ico svg {
  width: 26px;
  height: 26px;
  fill: var(--green-text);
}

.features h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.features p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- Sections ---------- */

section {
  padding: 110px 0 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 44px;
}

.section-head.row {
  max-width: none;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.section-head h2 {
  font-size: clamp(30px, 3.6vw, 44px);
}

.sub {
  color: var(--muted);
  font-size: 17px;
  margin: 14px 0 0;
}

/* ---------- Szene ---------- */

.scene figure {
  margin: 0;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 30px 70px -40px rgba(1, 3, 34, 0.55);
}

.scene img {
  width: 100%;
}

.scene figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 80px 32px 26px;
  background: linear-gradient(transparent, rgba(1, 3, 34, 0.78));
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
}

.scene figcaption b {
  color: var(--white);
  font-size: 18px;
  display: block;
}

.scene .tag {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 999px;
  padding: 4px 12px;
}

@media (max-width: 560px) {
  .scene figcaption {
    position: static;
    background: var(--navy);
    padding: 18px 20px;
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ---------- Modi ---------- */

.mode-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.mode {
  background: var(--white);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  flex-direction: column;
  border: 1px solid #e4e4ec;
}

.pill {
  display: flex;
  flex-direction: column;
  align-items: center;
  border-radius: 999px;
  padding: 12px 0 10px;
  border: 1px solid #dcdce4;
  line-height: 1.2;
  margin-bottom: 22px;
}

.pill span {
  font-size: 22px;
  font-weight: 600;
}

.pill small {
  font-size: 14px;
  color: var(--muted);
}

.mode.active .pill {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--white);
}

.mode.active .pill small {
  color: rgba(255, 255, 255, 0.8);
}

.mode p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 15px;
  flex: 1;
}

code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  background: var(--paper);
  border-radius: 8px;
  padding: 4px 9px;
  align-self: flex-start;
  color: var(--ink);
}

/* ---------- Galerie ---------- */

.gallery-section {
  margin-top: 110px;
  padding: 100px 0 110px;
  background: var(--navy);
  color: var(--white);
  transition: background 0.4s;
}

.gallery-section .eyebrow {
  color: var(--muted-dark);
}

.gallery-section.light {
  background: #e7e7ef;
  color: var(--ink);
}

.gallery-section.light .eyebrow {
  color: var(--muted);
}

.theme-switch {
  display: inline-flex;
  padding: 5px;
  border-radius: 999px;
  border: 1px solid var(--navy-line);
  background: var(--navy-box);
}

.gallery-section.light .theme-switch {
  background: var(--white);
  border-color: #dcdce4;
}

.theme-switch button {
  font: inherit;
  font-weight: 600;
  font-size: 15px;
  border: 0;
  border-radius: 999px;
  padding: 9px 22px;
  background: transparent;
  color: inherit;
  cursor: pointer;
}

.theme-switch button[aria-pressed="true"] {
  background: var(--white);
  color: var(--navy);
}

.gallery-section.light .theme-switch button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--white);
}

.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 34px 26px;
}

.gallery figure {
  margin: 0;
}

.gallery img {
  border-radius: 22px;
  padding: 14px;
  background: linear-gradient(145deg, #2b2d45, #0d0e22 60%);
  box-shadow: 0 24px 50px -28px rgba(0, 0, 0, 0.9);
  aspect-ratio: 1;
  transition: transform 0.3s;
}

.gallery figure:hover img {
  transform: translateY(-4px);
}

.gallery figcaption {
  margin-top: 16px;
  font-size: 14px;
  color: var(--muted-dark);
}

.gallery-section.light .gallery figcaption {
  color: var(--muted);
}

.gallery figcaption b {
  display: block;
  font-size: 16px;
  color: var(--white);
  margin-bottom: 2px;
}

.gallery-section.light .gallery figcaption b {
  color: var(--ink);
}

/* ---------- Installieren ---------- */

.install {
  padding-bottom: 110px;
}

.install-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}

.steps {
  list-style: none;
  counter-reset: step;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 16px;
}

.steps li {
  counter-increment: step;
  position: relative;
  background: var(--white);
  border-radius: 24px;
  padding: 24px 26px 22px 86px;
  border: 1px solid #e4e4ec;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 24px;
  top: 22px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: var(--white);
  font-weight: 700;
}

.steps h3 {
  font-size: 18px;
  margin-bottom: 6px;
}

.steps p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.buy {
  display: inline-block;
  margin-top: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--green-text);
  text-decoration: none;
}

.buy:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.steps b {
  color: var(--ink);
}

.installer {
  background: var(--navy);
  border-radius: var(--radius);
  padding: 30px;
  color: var(--white);
  position: sticky;
  top: 24px;
}

.installer-screen {
  border-radius: 20px;
  padding: 12px;
  background: linear-gradient(145deg, #2b2d45, #0d0e22 60%);
  margin-bottom: 24px;
}

.installer-screen img {
  border-radius: 2px;
}

esp-web-install-button {
  display: block;
}

.note {
  display: block;
  font-size: 14px;
  color: var(--muted-dark);
  text-align: center;
}

.version {
  margin: 14px 0 0;
  font-size: 13px;
  text-align: center;
  color: var(--muted-dark);
}

.version code {
  background: var(--navy-box);
  color: var(--white);
}

.more {
  margin-top: 28px;
  background: var(--white);
  border-radius: 24px;
  padding: 20px 26px;
  border: 1px solid #e4e4ec;
}

.more summary {
  cursor: pointer;
  font-weight: 600;
}

.more p {
  color: var(--muted);
  margin: 12px 0 0;
}

.more b {
  color: var(--ink);
}

/* ---------- Footer ---------- */

.footer {
  background: var(--navy);
  color: var(--muted-dark);
  padding: 40px 0;
  font-size: 14px;
}

.footer p {
  margin: 4px 0;
}

.footer .small {
  font-size: 13px;
  opacity: 0.8;
}

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .hero-grid,
  .install-grid {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 56px;
    padding-top: 24px;
  }

  .device {
    transform: none;
  }

  .features,
  .mode-cards {
    grid-template-columns: 1fr;
  }

  .gallery {
    grid-template-columns: repeat(2, 1fr);
  }

  .installer {
    position: static;
  }

  .nav-links a:not(.gh) {
    display: none;
  }
}

@media (max-width: 560px) {
  .gallery {
    grid-template-columns: 1fr;
  }

  .steps li {
    padding-left: 26px;
    padding-top: 78px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html {
    scroll-behavior: auto;
  }
}