:root {
  --first-clr: rgb(214, 28, 28);
  --second-clr: rgb(170, 20, 20);
  --third-clr: rgb(0, 0, 0);
  --fourth-clr: rgb(20, 20, 20);
  --fifth-clr: rgb(255, 255, 255);
  --sixth-clr: rgba(255, 255, 255, 0.5);
  --seventh-clr: rgb(13, 250, 5);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--third-clr);
  color: var(--fifth-clr);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  min-width: 320px;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

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

/* ── Buttony ── */
.btn {
  display: inline-block;
  padding: 0.5rem 1.25rem;
  color: var(--fifth-clr);
  font-size: 1rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  border-radius: 2px;
  transition: background-color 0.2s ease;
  text-align: center;
}

.btn--red {
  background-color: var(--first-clr);
}

.btn--red:hover {
  background-color: var(--second-clr);
}

.btn--lg {
  padding: 0.75rem 1.5rem;
  font-size: 1.1rem;
  white-space: nowrap;
}

.btn--full {
  display: block;
  width: 100%;
  padding: 0.9rem;
  font-size: 1.1rem;
  border-radius: 4px;
}

/* ── Hlavička ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  height: 64px;
  background: var(--third-clr);
}

.logo__img {
  height: 35px;
  width: auto;
  display: block;
}

@media (min-width: 600px) {
  .header {
    padding: 0 2rem;
  }
}

@media (min-width: 900px) {
  .header {
    padding: 0 3rem;
  }
}

/* ── Hero sekce ── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background-image:
    linear-gradient(
      to bottom,
      rgba(0, 0, 0, 0.55) 0%,
      rgba(0, 0, 0, 0.55) 100%
    ),
    url("../img/background.jpg");
  background-size: cover;
  background-position: center;
  background-color: #1a1a2e;
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: 1rem;
  max-width: 700px;
}

.hero__title {
  font-size: 1.75rem;
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero__subtitle {
  font-size: 1.1rem;
  font-weight: 400;
  margin-bottom: 0.75rem;
}

.hero__text {
  font-size: 0.95rem;
  color: var(--fifth-clr);
  margin-bottom: 1.25rem;
}

.hero__form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 600px;
  margin: 0 auto;
}

.hero__input {
  flex: 1;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  background-color: var(--sixth-clr);
  border: 1px solid var(--sixth-clr);
  color: var(--fifth-clr);
  border-radius: 2px;
  outline: none;
  transition: border-color 0.2s;
}

.hero__input::placeholder {
  color: var(--sixth-clr);
}

.hero__input:focus {
  border-color: var(--fifth-clr);
}

@media (min-width: 600px) {
  .hero__title {
    font-size: 2.5rem;
  }

  .hero__form {
    flex-direction: row;
  }
}

@media (min-width: 900px) {
  .hero__title {
    font-size: 3rem;
  }
}

/* ── Showcase sekce ── */
.showcase {
  background-color: var(--third-clr);
  padding: 3rem 1rem 4rem;
  text-align: center;
}

.showcase__grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.showcase__card {
  width: 60%;
  max-width: 280px;
  transition: transform 0.3s ease;
}

.showcase__card:hover {
  transform: scale(1.04);
}

.showcase__img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 8px 30px var(--third-clr);
}

@media (min-width: 700px) {
  .showcase__grid {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 1rem;
  }

  .showcase__card {
    width: 25%;
    max-width: none;
  }
}

/* ── Patička ── */
.footer {
  background-color: var(--third-clr);
  padding: 3rem 1rem 4rem;
}

.footer__inner {
  max-width: 1100px;
  margin: 0 auto;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 1rem;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer__link {
  font-size: 0.85rem;
  color: var(--sixth-clr);
  text-decoration: underline;
  transition: color 0.2s;
}

.footer__link:hover {
  color: var(--fifth-clr);
}

@media (min-width: 900px) {
  .footer__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ── Tlačítko „Zpět nahoru" ── */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  z-index: 200;
  font-size: 2.5rem;
  color: var(--fifth-clr);
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.3s ease,
    color 0.2s;
}

.back-to-top:hover {
  color: var(--first-clr);
}

.back-to-top--visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── Stránka s filmy ── */
.movies-page {
  min-height: 100vh;
  background-color: var(--third-clr);
}

.movies-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem 1rem 1.5rem;
}

.movies-select {
  padding: 0.5rem 2.5rem 0.5rem 0.9rem;
  font-size: 1rem;
  background-color: var(--third-clr);
  color: var(--fifth-clr);
  border: 1px solid var(--fifth-clr);
  border-radius: 4px;
  cursor: pointer;
  min-width: 180px;
  appearance: auto;
  transition: border-color 0.2s;
}

.movies-select:focus {
  border-color: var(--fifth-clr);
  outline: none;
}

.movies-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  padding: 1.5rem 1rem 3rem;
}

.movie-card,
.movies-grid > div {
  width: calc(50% - 1rem);
  max-width: 180px;
  transition: transform 0.3s ease;
  transform: rotate(3deg);
}

.movie-card:hover,
.movies-grid > div:hover {
  transform: rotate(0deg) scale(1.06);
  z-index: 10;
}

.movie-card__img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 6px 20px var(--third-clr);
  display: block;
  object-fit: cover;
}

.movie-card__placeholder {
  width: 100%;
  aspect-ratio: 2 / 3;
  background-color: #2a2a2a;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-size: 0.85rem;
  color: var(--sixth-clr);
  padding: 0.5rem;
}

.movies-grid--loading::after {
  content: "Načítám filmy…";
  display: block;
  text-align: center;
  width: 100%;
  color: var(--sixth-clr);
  padding: 2rem;
  font-size: 1rem;
}

@media (min-width: 600px) {
  .movie-card {
    width: calc(33.333% - 1rem);
    max-width: 200px;
  }
}

@media (min-width: 900px) {
  .movie-card {
    width: calc(14.2857% - 1rem);
    max-width: 220px;
  }
}

/* ── Registrační stránka ── */
.register-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.register-wrapper {
  width: 100%;
  padding: 1rem;
  display: flex;
  justify-content: center;
}

.register-form {
  width: 100%;
  max-width: 460px;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.form-group {
  width: 100%;
}

.form-input {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
  background-color: var(--third-clr);
  color: var(--fifth-clr);
  border: 1px solid var(--sixth-clr);
  border-radius: 4px;
  outline: none;
  transition: border-color 0.25s ease;
}

.form-input::placeholder {
  color: var(--sixth-clr);
}

.form-input:focus {
  outline: none;
}

.form-input--ok {
  border-color: var(--seventh-clr);
  border-width: 2px;
}

.form-input--error {
  border-color: var(--first-clr);
  border-width: 2px;
}

.form-error {
  display: block;
  min-height: 1.2em;
  margin-top: 0.25rem;
  font-size: 0.8rem;
  color: var(--first-clr);
}

.form-success {
  text-align: center;
  font-size: 1.1rem;
  color: var(--seventh-clr);
  padding: 2rem;
}