/*
  This file is part of <project name>.
  Copyright (C) 2024 Oscloud

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program. If not, see <https://www.gnu.org/licenses/>.
*/

/* ============================================
   IMPORTS
   ============================================ */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

/* ============================================
   CSS PROMĚNNÉ
   ============================================ */
:root {
  --primary: #fff;
  --secondary: rgba(0, 0, 0, 0.5);
  --tertiary: #151b74;
  --accent: #1565c0;
  --transparent: transparent;
}

/* ============================================
   ANIMACE - pohyblivé tečky pozadí
   ============================================ */
@-webkit-keyframes bg-scrolling-reverse {
  100% {
    background-position: 50px 50px;
  }
}
@-moz-keyframes bg-scrolling-reverse {
  100% {
    background-position: 50px 50px;
  }
}
@-o-keyframes bg-scrolling-reverse {
  100% {
    background-position: 50px 50px;
  }
}
@keyframes bg-scrolling-reverse {
  100% {
    background-position: 50px 50px;
  }
}
@-webkit-keyframes bg-scrolling {
  0% {
    background-position: 50px 50px;
  }
}
@-moz-keyframes bg-scrolling {
  0% {
    background-position: 50px 50px;
  }
}
@-o-keyframes bg-scrolling {
  0% {
    background-position: 50px 50px;
  }
}
@keyframes bg-scrolling {
  0% {
    background-position: 50px 50px;
  }
}

/* ============================================
   ZÁKLAD
   ============================================ */
* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  color: var(--primary);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 400;
  text-align: center;
  /* img size is 50x50 */
  background: url("data:image/png;base64,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")
    repeat 0 0;
  -webkit-animation: bg-scrolling-reverse 0.92s infinite;
  -moz-animation: bg-scrolling-reverse 0.92s infinite;
  -o-animation: bg-scrolling-reverse 0.92s infinite;
  animation: bg-scrolling-reverse 0.92s infinite;
  -webkit-animation-timing-function: linear;
  -moz-animation-timing-function: linear;
  -o-animation-timing-function: linear;
  animation-timing-function: linear;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
main,
menu,
nav,
section,
summary {
  display: block;
}

audio,
canvas,
progress,
video {
  display: inline-block;
  vertical-align: baseline;
}

audio:not([controls]) {
  display: none;
  height: 0;
}

[hidden],
template {
  display: none;
}

img {
  border: 0;
  max-width: 100%;
}

/* ============================================
   ODKAZY
   ============================================ */
a {
  background-color: var(--transparent);
  color: var(--accent);
  text-decoration: none;
}

a:active,
a:hover {
  outline: 0;
}

a:hover {
  text-decoration: underline;
}

/* ============================================
   HLAVIČKA
   ============================================ */
.page-header {
  position: relative;
  padding: 2rem 1rem 1rem 1rem;
  text-align: center;
}

.project-name {
  margin: 0.5rem 0;
  font-family: "Inter", sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary);
}

@media screen and (min-width: 64em) {
  .project-name {
    font-size: 4rem;
  }
}

@media screen and (min-width: 42em) and (max-width: 64em) {
  .project-name {
    font-size: 3rem;
  }
}

@media screen and (max-width: 42em) {
  .project-name {
    font-size: 1.75rem;
  }
}

.project-tagline {
  max-width: 60ch;
  margin: 0.5rem auto 1.5rem auto;
  text-align: center;
  font-weight: 400;
  font-family: "Inter", sans-serif;
  opacity: 0.85;
}

@media screen and (min-width: 64em) {
  .project-tagline {
    font-size: 1.25rem;
  }
}

@media screen and (min-width: 42em) and (max-width: 64em) {
  .project-tagline {
    font-size: 1.15rem;
  }
}

@media screen and (max-width: 42em) {
  .project-tagline {
    font-size: 1rem;
  }
}

.project-description {
  margin: 1rem auto;
  max-width: 70ch;
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--primary);
  opacity: 0.85;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
  flex: 1;
  font-family: "Inter", sans-serif;
}

.larger-name {
  font-size: larger;
}

.smaller-name {
  font-size: smaller;
}

@media screen and (min-width: 64em) {
  .main-content {
    font-size: 1.5rem;
  }
}

@media screen and (min-width: 42em) and (max-width: 64em) {
  .main-content {
    font-size: 1.25rem;
  }
}

@media screen and (max-width: 42em) {
  .main-content {
    font-size: 1rem;
  }
}

/* ============================================
   TLAČÍTKA
   ============================================ */
.btn {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--primary);
  background-color: var(--secondary);
  border-color: rgba(255, 255, 255, 0.2);
  border-style: solid;
  border-width: 1px;
  border-radius: 0.3rem;
  font-family: "Inter", sans-serif;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s, background-color 0.2s, border-color 0.2s;
}

.btn:hover {
  color: rgba(255, 255, 255, 0.95);
  text-decoration: none;
  background-color: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn + .btn {
  margin-left: 1rem;
}

@media screen and (min-width: 64em) {
  .btn {
    padding: 0.75rem 1rem;
  }
}

@media screen and (min-width: 42em) and (max-width: 64em) {
  .btn {
    padding: 0.6rem 0.9rem;
    font-size: 0.9rem;
  }
}

@media screen and (max-width: 42em) {
  .btn {
    display: block;
    width: 100%;
    padding: 0.75rem;
    font-size: 0.9rem;
  }

  .btn + .btn {
    margin-top: 1rem;
    margin-left: 0;
  }
}

/* ============================================
   FORMULÁŘOVÉ PRVKY (reset)
   ============================================ */
button,
input,
optgroup,
select,
textarea {
  color: inherit;
  font: inherit;
  margin: 0;
}

button {
  overflow: visible;
}

button,
select {
  text-transform: none;
}

button,
html input[type="button"],
input[type="reset"],
input[type="submit"] {
  -webkit-appearance: button;
  cursor: pointer;
}

button[disabled],
html input[disabled] {
  cursor: default;
}

button::-moz-focus-inner,
input::-moz-focus-inner {
  border: 0;
  padding: 0;
}

/* ============================================
   DROPDOWN
   ============================================ */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: relative;
}

.dropdown:hover .dropdown-content {
  display: block;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  font-family: "Inter", sans-serif;
  font-size: 0.95rem;
  display: block;
}

.site-footer p {
  text-align: center;
  margin: 0;
}

@media screen and (min-width: 64em) {
  .site-footer {
    font-size: 1rem;
  }
}

@media screen and (min-width: 42em) and (max-width: 64em) {
  .site-footer {
    font-size: 1rem;
  }
}

@media screen and (max-width: 42em) {
  .site-footer {
    font-size: 0.9rem;
  }
}

/* ============================================
   SPACER
   ============================================ */
.spacer {
  height: 1.5rem;
}

/* ============================================
   NEWS BLOCK
   ============================================ */
.news-block {
  margin: 0 auto 1.5rem auto;
  padding: 1.25rem;
  max-width: 70ch;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 0.5rem;
  background-color: rgba(0, 0, 0, 0.4);
  text-align: left;
}

.news-block h2,
.news-block h3 {
  margin-top: 0;
  color: var(--primary);
}

/* ============================================
   SUB / SUP
   ============================================ */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}