/* Google API Guide - styled to match KotoKata_support taste */

:root{
  --kk-blue-300:#0ea5e9;
  --kk-blue-600:#2563eb;
  --kk-purple-600:#7c3aed;
  --kk-surface:#ffffff;
  --kk-border:#e6edf8;
  --kk-text:#0f172a;
  --kk-muted:#475569;
}


@keyframes bg-shift{
  0%{ background-position:0% 50%; }
  50%{ background-position:100% 50%; }
  100%{ background-position:0% 50%; }
}

html,body{
  height:100%;
}

body{
  margin:0;
  font-family:'Noto Sans JP','Noto Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Inter,system-ui,sans-serif;
  color:var(--kk-text);
  background:linear-gradient(120deg,var(--kk-blue-300),var(--kk-blue-600),var(--kk-purple-600));
  background-size:200% 200%;
  animation:bg-shift 16s ease infinite;
}

.container{
  max-width:980px;
  margin:0 auto;
  padding:24px 20px 48px;
}

.nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  margin-bottom:16px;
}

.lang-toggle{
  display: inline-flex;
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  overflow: hidden;
  backdrop-filter: blur(6px);
}
.lang-toggle button{
  appearance: none;
  background: transparent;
  color: #e2e8f0;
  padding: 8px 14px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.2s, color 0.2s;
  font-size: calc(0.85rem - 2pt);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: auto; /* override old rules */
  height: auto;    /* override old rules */
}
.lang-toggle button.active{
  background: #fff;
  color: #0f172a;
}

.header{
  text-align:center;
  margin:12px 0 20px;
}
.header h1{
  margin:0;
  font-size:clamp(22px,3.7vw,32px);
  font-family:'Noto Sans JP','Noto Sans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Inter,system-ui,sans-serif;
  font-weight:800;
  letter-spacing:.3px;
  background:linear-gradient(135deg,#0f172a 0%,#0b1220 40%,#1e293b 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  white-space:nowrap;
}

.step{
  margin:18px 0 26px;
}
.step h3{
  margin:0 0 10px;
  font-size:clamp(18px,2.8vw,22px);
  font-weight:800;
  letter-spacing:.2px;
  background:linear-gradient(135deg,var(--kk-blue-600),var(--kk-purple-600));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.step .step-content{
  background:linear-gradient(135deg,#ffffff,#f8fafc);
  border:1px solid var(--kk-border);
  border-left:6px solid var(--kk-blue-600);
  box-shadow:0 12px 28px rgba(2,6,23,0.10);
  border-radius:16px;
  padding:18px;
}
.step p{
  color:var(--kk-muted);
  line-height:1.6;
}

.guide-image{
  width:100%;
  display:block;
  margin:8px 0 18px;
  border-radius:14px;
  border:1px solid var(--kk-border);
  box-shadow:0 10px 24px rgba(2,6,23,0.10);
}

.link-chip{
  display:inline-grid;
  place-items:center;
  height:36px;
  padding:0 14px;
  border-radius:10px;
  background:linear-gradient(135deg,rgba(255,255,255,0.25),rgba(255,255,255,0.05));
  border:1px solid rgba(255,255,255,0.25);
  color:#0b1220;
  text-decoration:none;
  font-weight:700;
}
.link-chip:hover{
  filter:brightness(1.02);
}

.warning{
  margin:26px 0 40px;
}
.warning h4{
  margin:0 0 10px;
  font-size:18px;
}
.warning p{
  background:#ffffff;
  border:1px solid var(--kk-border);
  border-left:6px solid var(--kk-blue-600);
  border-radius:14px;
  padding:14px 16px;
  box-shadow:0 8px 20px rgba(2,6,23,0.08);
  color:var(--kk-muted);
}

@media (max-width:640px){
  .container{ padding:18px 14px 36px; }
  .step .step-content{ padding:14px; border-radius:14px; }
  .guide-image{ border-radius:12px; }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(120deg, #0ea5e9, #2563eb, #7c3aed);
    background-size: 200% 200%;
    animation: bg-shift 12s ease infinite;
    color: #0f172a;
    line-height: 1.6;
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px;
}

@keyframes bg-shift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.container {
    width: 100%;
    max-width: 980px;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    color: #e2e8f0;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    padding: 30px 20px;
}

.lang-toggle {
    display: inline-flex;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.25);
    border-radius: 999px;
    overflow: hidden;
    backdrop-filter: blur(6px);
}

.lang-toggle button {
    appearance: none;
    background: transparent;
    color: #e2e8f0;
    padding: 8px 14px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s, color 0.2s;
    font-size: calc(0.85rem - 2pt);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lang-toggle button.active {
    background: #fff;
    color: #0f172a;
}

.header h1 {
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    margin-bottom: 10px;
    color: white;
    font-weight: 700;
}

.header h1 .lang-ja,
.header h1 .lang-id {
    color: white !important;
}


.step {
    background: white;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 18px;
    border-left: 4px solid #2563eb;
    box-shadow: 0 10px 24px rgba(2,6,23,0.10);
    border: 1px solid #e2e8f0;
    font-size: 0;
}

.step > h3,
.step > a,
.step > p,
.step > .step-content,
.step > .warning,
.step > .usage {
    font-size: 1rem;
}

.step-number {
    background: #2563eb;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: bold;
    margin-right: 10px;
    vertical-align: middle;
}

.step h3 {
    display: inline;
    font-size: 1.1rem;
    font-weight: 800;
    vertical-align: middle;
    margin: 0;
}

.step h3 .lang-ja,
.step h3 .lang-id {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

.step p {
    margin-top: 10px;
    color: #4a5568;
}

.step p small {
    display: block;
    margin-top: 5px;
    color: #718096;
    font-size: 0.9em;
}

.step-content {
    margin-top: 15px;
}


.guide-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 8px;
    margin: 15px 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    border: 1px solid #e2e8f0;
}

.link-button {
    display: inline-block;
    background: #2563eb;
    color: white;
    padding: 12px 20px;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    margin: 10px 0;
    transition: transform .15s ease, box-shadow .15s ease;
    box-shadow: 0 8px 20px rgba(37,99,235,.35);
}

.link-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(37,99,235,.45);
}

a.link-chip, .link-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: #ffffff !important;
    background: #ffffff !important;
    color: #0f172a !important;
    padding: 4px 10px;
    text-decoration: none;
    border-radius: 999px;
    font-weight: 700;
    box-shadow: 0 6px 14px rgba(0,0,0,.15);
    border: 1px solid #e2e8f0;
    letter-spacing: normal;
}

a.link-chip:hover, .link-chip:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 18px rgba(66,133,244,.40);
    background-color: #ffffff !important;
    background: #ffffff !important;
}

.warning {
    background: #fff5f5;
    border: 1px solid #fed7d7;
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 10px 24px rgba(2,6,23,0.10);
    border: 1px solid #e2e8f0;
}

.warning h4 {
    color: #c53030;
    margin-bottom: 8px;
    font-size: 1rem;
    font-weight: 600;
}

.warning p {
    color: #742a2a;
    margin: 0;
    font-size: 0.9rem;
}

.usage {
    background: white;
    border-radius: 12px;
    padding: 24px;
    margin: 20px 0;
    box-shadow: 0 10px 24px rgba(2,6,23,0.10);
    border: 1px solid #e2e8f0;
}

.usage h3 {
    color: #2d3748;
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
}

.usage p {
    color: #4a5568;
    margin-bottom: 8px;
}

.lang-ja {
    color: #2d3748;
    font-weight: 500;
}

.lang-id {
    color: #2d3748;
    font-weight: 500;
}

/* Language visibility */
[data-lang="ja"] .lang-ja { display: block; }
[data-lang="ja"] .lang-id { display: none; }
[data-lang="id"] .lang-id { display: block; }
[data-lang="id"] .lang-ja { display: none; }

@media (max-width: 480px) {
    body {
        padding: 16px;
    }

    .container {
        padding: 0;
    }
    
    .header {
        padding: 20px 15px;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .step {
        padding: 16px;
    }

    .nav {
        margin-bottom: 15px;
    }
    
    .lang-toggle {
        margin-left: auto;
    }
}