@charset 'UTF-8';

/*
COLORS
================================================ */
:root {
    --light-blue: #4db1ec;
    --blue: #1665cc;
    --purple: #333;
    --pink: #757575;
    --orange: #ff9f67;
    --yellow: #ffd673;
    --light-green: #e29b9b8a;
    --green: #af000077;
    --grey: #333;
    --white: #fff;
}

/*
GENERAL STYLING
================================================ */
html {
    font-size: 100%;
    /* スムーズスクロール */
    scroll-behavior: smooth;
}
body {
	color: var(--grey);
	font-family: sans-serif;
    background-color:#c0c0c0;
}

/*
COMMON
================================================ */
p {
    line-height: 1.7;
    text-align: center;
}
img {
    max-width: 100%;
}
h2 {
    font-size: 3rem;
    margin-bottom: 2rem;
}
h1,
h2 {
    text-align: center;
}
header,
h1,
h2,
h3,
.hero-date {
    font-family: century, sans-serif;
}

/* Layout */
.wrapper {
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 0 1rem;
}

/*
HEADER
================================================ */
header {
    background: var(--grey);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    z-index: 1;
}
header .wrapper {
    display: flex;
    justify-content: space-between;
}
header a {
    color: var(--white);
    font-size: 1.5rem;
}
.btn-menu {
    position: absolute;
    top: 12px;
    right: 12px;
    border: 1px solid rgba(255,255,255,.5);
    color: var(--white);
    padding: .5rem 1rem;
}
.main-nav {
    background: var(--grey);
    width: 0;
    position: absolute;
    z-index: 2;
    top: 50px;
    right: 0;
    overflow: hidden;
    transition: .5s;
}
.main-nav li {
    text-align: center;
    margin: 2rem 0;
}
.main-nav a {
    display: block;
}
.main-nav.open-menu {
    width: 100%;
}
/*
HERO
================================================ */
#hero {
    background-color: var(--light-blue);
    background-image: url('../image/jazz.jpg');
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    background-blend-mode: screen;
    animation: bg-color 24s infinite;
    height: 100vh;
    display: flex;
    align-items: center;
    -webkit-clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
    clip-path: polygon(0 0, 100% 0, 100% 90%, 0 100%);
}
@keyframes bg-color {
    0% { background-color: var(--light-blue); }
    12.5% { background-color: var(--blue); }
    25% { background-color: var(--purple); }
    37.5% { background-color: var(--pink); }
    50% { background-color: var(--orange); }
    62.5% { background-color: var(--yellow); }
    75% { background-color: var(--light-green); }
    87.5% { background-color: var(--green); }
    100% { background-color: var(--light-blue); }
}
#hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}
.hero-date {
    text-align: center;
    border-top: 3px solid var(--grey);
    border-bottom: 3px solid var(--grey);
    padding: .5rem 0;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

/*
ABOUT
================================================ */
#about {
    padding: 4rem 1rem;
}
#about h2 {
  background: linear-gradient(var(--light-green), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
}
#about p {
    margin-bottom: 2rem;
}

/*
NEWS
================================================ */
#news {
    background-image: linear-gradient(var(--light-green), var(--green));
    padding: 7rem 0;
    -webkit-clip-path: polygon(0 0, 100% 10%, 100% 90%, 0 100%);
    clip-path: polygon(0 0, 100% 10%, 100% 90%, 0 100%);
}
#news h2 {
    color: var(--white);
}
.news-table {
    color: var(--white);
    width: 100%;
}
.news-table tr {
    border-bottom: 1px solid rgba(255,255,255,.5);
}
.news-table td {
    display: block;
    line-height: 1.5;
}
.news-date {
    font-size: .875rem;
    padding-top: 1rem;
}
.news-content {
    padding-bottom: 1rem;
}

/*
INST
================================================ */
#inst {
    padding: 4rem 1rem;
}
.speakers-list {
    display: flex;
    flex-direction: row-reverse;
    align-items: flex-start;
    margin-bottom: 2rem;
}
.speakers-text {
    margin-left: 1rem;
}
#inst h2 {
  background: linear-gradient(var(--light-green), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
}
#inst h3 {
    font-size: 1.5rem;
    margin-bottom: .5rem;
}
#inst img {
    border-radius: 50%;
    width: 20%;
}

/*
RESERVE
================================================ */
#reserve {
    background-image: linear-gradient(var(--light-green), var(--green));
    padding: 6rem 1rem 2rem;
    -webkit-clip-path: polygon(0 0, 100% 10%, 100% 100%, 0 100%);
    clip-path: polygon(0 0, 100% 10%, 100% 100%, 0 100%);
}
#reserve h2 {
    color: var(--white);
}
.ticket-form {
    max-width: 480px;
    margin: 0 auto 5rem;
}
.ticket-form label {
    color: var(--white);
    display: block;
    margin-bottom: .5rem;
}
.ticket-field {
    background: rgba(255,255,255,.6);
    padding: 1rem;
    width: 100%;
    margin-bottom: 1.5rem;
}
.ticket-btn {
    background: var(--grey);
    color: var(--white);
    display: block;
    width: 100%;
    padding: 1rem;
    margin-top: 1rem;
}
/*
FOOTER
================================================ */
.footer {
    border-top: 1px solid rgba(255,255,255,0.5);
    padding-top: 2rem;
    text-align: center;
    font-size: .875rem;
    color: var(--white);
}
.footer a {
    text-decoration: underline;
}

/*
DESKTOP SIZE
================================================ */
@media (min-width: 600px) {
    /* Common */
        h2 {
            font-size: 5rem;
        }
        a:hover,
        .ticket-btn:hover {
            transition: .3s;
        }
        a:hover {
            color: #741010;
        }
        .ticket-btn:hover {
            background: #741010;
        }
    
    /* Header */
        .btn-menu {
            display: none;
        }
        .main-nav {
            width: 100%;
            position: static;
            display: flex;
        }
        .main-nav li {
            margin: 0 0 0 1.5rem;
        }
    /* Hero */
        #hero h1 {
            font-size: 6.875rem;
        }
        .hero-date {
            font-size: 3rem;
        }
    /* News */
        .news-table td {
            display: table-cell;
        }
        .news-date {
            padding: 1.125rem 0 1rem 1rem;
        }
        .news-content {
            padding: 1rem 1rem 1rem 0;
        }
    /* Speakers */
        #speakers h2 {
            margin-bottom: 4rem;
        }
        .speakers-list {
            margin-bottom: 3rem;
        }
        .speakers-text {
            margin-left: 2rem;
        }
    }