/* ===============================
   CSS RESET (Browser-Konsistenz)
   =============================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

button,
input,
textarea,
select {
  font: inherit;
  outline-offset: 2px;
}

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

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

/* ===============================
   :ROOT VARIABLES
   =============================== */
:root {
  /* Farben */
  --nav-bg-color: #ffffff;
  --nav-tx-color: navy;
  --main-tx-color: #000000;
  --main-bg-color: #ffffff;
  --footer-bg-color: lightgrey;
  --accent-color: navy;
  --logo-red: #de0000;

  /* Fonts */
  --font-main: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-heading: "Palatino Linotype", Palatino, "Book Antiqua", serif;

  /* Abstände */
  --nav-height: 3.125rem; /* 50px */
  --padding-desktop: 20%;
  --padding-large: 3rem;
  --padding-medium: 1.25rem;
  --padding-small: 1rem;

  /* Breakpoints */
  --bp-large: 1500px;
  --bp-medium: 1200px;
  --bp-tablet: 768px;
  --bp-mobile: 500px;

  /* Gradients */
  --gradient-main: linear-gradient(to bottom right, black 59%, var(--accent-color) 100%);
  --gradient-footer: linear-gradient(to top right, black 59%, var(--accent-color) 100%);
}

/* ===============================
   BODY & TYPOGRAPHY
   =============================== */
body {
  /* min-height: 100vh; */
  background-color: var(--main-bg-color);
  font-family: var(--font-main);
  color: var(--main-tx-color);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    /* margin-bottom: var(--padding-small); */
    color: var(--accent-color);
}

#main-container{
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
/* ===============================
   UTILITY CLASSES
   =============================== */
.logo-red {
  color: var(--logo-red);
}

.responsive {
  padding-left: var(--padding-desktop);
  padding-right: var(--padding-desktop);
}

.active {
  color: var(--logo-red) !important;
  background-color: #EEE !important;
}

.hidden {
    display: none !important;
}

/* ===============================
   NAVIGATION
   =============================== */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  height: var(--nav-height);
  background-color: var(--nav-bg-color);
  box-shadow: 0 0.1875rem 0.5rem rgba(0, 0, 0, 0.3); /* 3px 8px */
  display: flex;
  align-items: center;
  font-family: Arial, sans-serif;
  z-index: 100;
}

.nav-item {
  height: 100%;
  padding: 0 var(--padding-medium);
  background-color: inherit;
  color: var(--accent-color);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  user-select: none;
}

.nav-item:hover {
  color: var(--logo-red);
  background-color: #EEE;
}

#nav-logo {
    height: 80%;
}

#nav-logo:hover {
  background-color: inherit;
}

#icon-menu {
    margin-left: auto;
    margin-right: 1em;
    display: none;
}

/* ===============================
   SIDEBAR
   =============================== */
#sidebar {
  position: fixed;
  top: var(--nav-height);
  right: 0;
  width: 250px;
  height: calc(100vh - var(--nav-height));
  background-color: var(--nav-bg-color);
  padding: var(--padding-medium) var(--padding-large) var(--padding-medium);
  box-shadow: -0.1875rem 1.25rem 0.5rem rgba(0, 0, 0, 0.3); /* -3px 20px 8px */
  display: none;
  flex-direction: column;
  z-index: 999;
  overflow-y: auto;
}



#sidebar a {
  padding: var(--padding-medium);
  border-bottom: 1px solid lightgrey;
  display: block;
  height: auto;
}

#sidebar a:hover {
  color: var(--logo-red);
}

/* ===============================
   HERO SECTION
   =============================== */
.hero {
  margin-top: var(--nav-height);
  width: 100%;
  background: var(--gradient-main);
  color: white;
  text-align: left;
  align-items: left;
  padding-top: 2em;
  padding-bottom: 2em;
}

.hero h1{
    font-size: 3rem;
    font-weight: 700;
    color: white;
    font-family: Arial, sans-serif;
    color: var(--logo-red);
}
.hero h2{
    font-size: 1.75rem;
    font-weight: 600;
    color: white;
}

.slogan {
    font-size: 1.3rem;
    max-width: 800px;
    margin: 0 auto;
}

.slogan p {
    margin-top: 0.7em;
}

/* .slogan */ .button {
    margin-top: 1.5rem;
    display: inline-block;
    color: navy;
    padding: 0.625rem 0.9375rem;
    border: 2px solid navy;
    border-radius: 3em;
    font-family: Arial, sans-serif;
    background-color: transparent;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.3s ease;
}

.button:hover{
    background-color: rgba(0, 0, 128, 0.2);
}

.slogan .button {
    color: var(--logo-red);
    border-color: var(--logo-red);
}

.slogan .button:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

/* ===============================
   MAIN CONTENT
   =============================== */
main {
    /* min-height: 90vh; */
    padding: 0 0 0.625rem;
    font-size: 1.1rem;
}

main h1, main h2, main h3 {
    padding-bottom: 0.625rem;
    color: var(--accent-color);
}

main section {
    padding: 2.5rem 0 1.25rem;
    border-bottom: 2px solid lightgrey;
    max-width: 800px;
    margin: 0 auto;
}

main section:last-child {
    border: none;
}

main section p {
    max-width: 81.25rem; /* 1300px */
    margin: 0 auto;
}

/* clearfix */
main section::after {
    content: "";
    display: table;
    clear: both;
}

/* IMAGE BOXES */
.image-box img {
    max-width: 25rem; /* 400px */
}

.image-box.right img {
    float: right;
    margin-left: 1.25rem;
}

.image-box.left img {
    float: left;
    margin-right: 1.25rem;
}

.image-box.right img,
.image-box.left img {
    float: none !important;
    max-width: 100%;
    margin: 0;
}

.image-box img {
    order: 2;
    margin-top: 0.625rem;
}


/* Contact  */
.contact {
    padding-top: 60px;
    padding-bottom: 60px;
    text-align: center;
}

.contact .intro {
    margin-bottom: 40px;
    color: var(--main-tx-color);
    font-size: 1.2em;
}

.contact-grid {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.contact-item {
    background-color: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    border-radius: 12px;
    padding: 20px 30px;
    flex: 1 1 250px;
    max-width: 300px;
    display: flex;
    align-items: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-item .icon {
    font-size: 2em;
    color: var(--accent-color);
    margin-right: 15px;
}

.contact-item .info h3 {
    margin-bottom: 5px;
    color: var(--accent-color);
}

.contact-item .info p a {
    color: var(--main-tx-color);
    text-decoration: none;
}
.contact-item .info p a:hover {
    text-decoration: underline;
}

/* Services */

.service p {
    margin-bottom: 15px;
    line-height: 1.6;
}

.service ul {
    list-style: disc outside;
    margin-bottom: 15px;
    padding-left: 1.2rem;
}

.service li {
    margin-bottom: 8px;
    text-indent: -0.5rem;        /* hebt Folgezeilen etwas an */
    padding-left: 0.5rem;        /* gleicht das negative indent aus */
}

/* ===============================
   Footer
   =============================== */

footer{
    min-height: 10vh;
    padding-top: 30px;
    padding-bottom: 50px;
    background: var(--gradient-footer);
    margin-top: auto;
}
#footer-container {
    display: flex;
    flex-direction: column;
    max-width: 800px;
    margin: 0 auto;
}

#footer-container a{
    padding-top: 5px;
    padding-right: 30px;
    color: #ccc;
}
/* ===============================
   FORM ELEMENTS
   =============================== */
form {
  padding: 0.625rem 0 1.5625rem; /* 10px 0 25px */
  max-width: 40rem;
  margin: 0 auto;
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 0.25rem;
  margin-top: 0.375rem;
  margin-bottom: 1rem;
  resize: vertical;
  font-family: var(--font-main);
  font-size: 1rem;
}

textarea {
  min-height: 10rem;
}

#checkbox-wrapper {
  display: flex;
  max-width: 50rem;
  align-items: flex-start;
  margin-top: 0.375rem;
  margin-bottom: 1rem;
}

#c-label-data-privacy {
  margin-left: 0.5rem;
  margin-top: -0.2em;
  display: inline-block;
}

/* ===============================
   RESPONSIVE PADDING UTILITY
   =============================== */

/* large (<= 1500px) */
@media (max-width: 1500px) {
    .responsive {
        padding-left: 10%;
        padding-right: 10%;
    }
}

/* medium (<= 1200px) */
@media (max-width: 1200px) {
    .responsive {
        padding-left: 3.125rem; /* 50px */
        padding-right: 3.125rem;
    }
}

/* tablet (<= 768px) */
@media (max-width: 768px) {
    .responsive {
        padding-left: 1.25rem; /* 20px */
        padding-right: 1.25rem;
    }

    /* Mobile nav adjustments */
    nav .menu {
        display: none;
    }
    #icon-menu {
        display: flex;
    }

 /* Responsive Sidebar */
  #sidebar {
    display: flex;
    width: 100%;
    height: calc(100vh - var(--nav-height));
    top: var(--nav-height);
    right: 0;
    padding: var(--padding-medium);
  }

/* Responsive image boxes */
  .image-box {
    float: none !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0 auto;
  }

/* mobile (<= 500px) */
@media (max-width: 500px) {
    .responsive {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    #sidebar {
        width: 100%;
    }
}