/*
 * ArtrIa Apps — Shared Design System
 * Aurora Frost Glassmorphism
 * Reference: JPG Batch Converter
 *
 * Usage: <link rel="stylesheet" href="https://app.artria-ai.com/shared.css">
 */

/* ── Google Fonts ──────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Jost:wght@400;500;600;700;800&family=Noto+Sans+JP:wght@400;500;700&display=swap');

/* ── Design Tokens ─────────────────────────────────────────────── */
:root {
  /* Colors */
  --artria-text:        #2d2b55;
  --artria-text-muted:  #7874a8;
  --artria-text-faint:  #b0aed4;
  --artria-page-bg:     #ebebff;

  /* Gradient */
  --artria-grad: linear-gradient(135deg, #818cf8 0%, #38bdf8 100%);
  --artria-grad-hover: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);

  /* Glassmorphism — Card */
  --artria-card-bg:     rgba(255, 255, 255, 0.58);
  --artria-card-border: rgba(255, 255, 255, 0.82);
  --artria-card-shadow: 0 8px 32px rgba(120, 100, 220, 0.1), inset 0 1px 0 rgba(255, 255, 255, 0.95);

  /* Glassmorphism — Card Light */
  --artria-card-light-bg:     rgba(255, 255, 255, 0.42);
  --artria-card-light-border: rgba(255, 255, 255, 0.68);
  --artria-card-light-shadow: 0 4px 20px rgba(120, 100, 220, 0.07);

  /* Layout */
  --artria-max-width:   900px;
  --artria-radius-card: 22px;
  --artria-radius-pill: 99px;
}

/* ── Base ──────────────────────────────────────────────────────── */
body {
  margin: 0;
}

*, *::before, *::after {
  box-sizing: border-box;
}

/* ── Page ──────────────────────────────────────────────────────── */
.artria-page {
  min-height: 100vh;
  background: var(--artria-page-bg);
  font-family: 'Jost', 'Noto Sans JP', sans-serif;
  color: var(--artria-text);
  position: relative;
  padding: 32px 16px;
}

/* ── Aurora Background Blobs ───────────────────────────────────── */
.artria-aurora {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.artria-aurora-blob {
  position: absolute;
  border-radius: 50%;
}

.artria-aurora-blob--sky {
  top: -18%; left: -12%;
  width: 60vw; height: 60vw;
  background: rgba(125, 211, 252, 0.55);
  filter: blur(100px);
}

.artria-aurora-blob--lavender {
  top: 20%; right: -15%;
  width: 52vw; height: 52vw;
  background: rgba(196, 181, 253, 0.55);
  filter: blur(90px);
}

.artria-aurora-blob--mint {
  bottom: -12%; left: 10%;
  width: 55vw; height: 55vw;
  background: rgba(167, 243, 208, 0.5);
  filter: blur(95px);
}

.artria-aurora-blob--blush {
  bottom: 5%; right: 5%;
  width: 40vw; height: 40vw;
  background: rgba(251, 207, 232, 0.52);
  filter: blur(85px);
}

.artria-aurora-blob--yellow {
  top: 55%; left: 40%;
  width: 30vw; height: 30vw;
  background: rgba(254, 240, 138, 0.3);
  filter: blur(80px);
}

/* ── Range Input ───────────────────────────────────────────────── */
input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  border-radius: 99px;
  background: rgba(129, 140, 248, 0.2);
  outline: none;
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #818cf8, #38bdf8);
  cursor: pointer;
  box-shadow: 0 1px 6px rgba(129, 140, 248, 0.45);
}

input[type='range']::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, #818cf8, #38bdf8);
  cursor: pointer;
  border: none;
}

/* ── Container ─────────────────────────────────────────────────── */
.artria-container {
  max-width: var(--artria-max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ── Back Link ─────────────────────────────────────────────────── */
/* 左寄せ・タイトルの上 */
.artria-back-link-wrap {
  margin-bottom: 20px;
}

.artria-back-link {
  background: var(--artria-card-light-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--artria-card-light-border);
  box-shadow: var(--artria-card-light-shadow);
  border-radius: var(--artria-radius-pill);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--artria-text-muted);
  text-decoration: none;
  transition: opacity 0.15s;
}

.artria-back-link:hover {
  opacity: 0.75;
}

/* ── Hero ──────────────────────────────────────────────────────── */
.artria-hero {
  text-align: center;
  margin-bottom: 36px;
}

/* アイコンボックス（タイトル上のグラデーションアイコン） */
.artria-icon-box {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px;
  background: var(--artria-grad);
  border-radius: 20px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(129, 140, 248, 0.35);
}

.artria-h1 {
  font-size: 42px;
  font-weight: 800;
  font-family: 'Jost', 'Noto Sans JP', sans-serif;
  letter-spacing: -0.5px;
  margin: 0 0 8px;
  background: var(--artria-grad);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.artria-subtitle {
  font-size: 15px;
  font-weight: 500;
  color: var(--artria-text-muted);
  margin: 0;
}

/* ── Glassmorphism Cards ───────────────────────────────────────── */
.artria-card {
  background: var(--artria-card-bg);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border: 1px solid var(--artria-card-border);
  box-shadow: var(--artria-card-shadow);
  border-radius: var(--artria-radius-card);
}

.artria-card-light {
  background: var(--artria-card-light-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--artria-card-light-border);
  box-shadow: var(--artria-card-light-shadow);
  border-radius: var(--artria-radius-card);
}

/* ── Buttons ───────────────────────────────────────────────────── */
.artria-btn-primary {
  background: var(--artria-grad);
  color: white;
  border: none;
  border-radius: var(--artria-radius-pill);
  padding: 0 16px;
  height: 34px;
  font-size: 13px;
  font-weight: 600;
  font-family: 'Jost', 'Noto Sans JP', sans-serif;
  box-shadow: 0 2px 12px rgba(129, 140, 248, 0.35);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.15s;
  text-decoration: none;
}

.artria-btn-primary:hover {
  opacity: 0.88;
}

.artria-btn-secondary {
  background: var(--artria-card-light-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--artria-card-light-border);
  box-shadow: var(--artria-card-light-shadow);
  color: var(--artria-text);
  border-radius: var(--artria-radius-pill);
  padding: 0 16px;
  height: 34px;
  font-size: 13px;
  font-weight: 600;
  font-family: 'Jost', 'Noto Sans JP', sans-serif;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: opacity 0.15s;
}

.artria-btn-secondary:hover {
  opacity: 0.8;
}

/* ── Badge ─────────────────────────────────────────────────────── */
.artria-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--artria-radius-pill);
  background: rgba(129, 140, 248, 0.12);
  color: #6366f1;
  border: 1px solid rgba(129, 140, 248, 0.22);
}

/* ── Sidebar Layout（2カラムグリッド） ─────────────────────────── */
.artria-sidebar-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 768px) {
  .artria-sidebar-layout {
    grid-template-columns: 1fr;
  }
}

/* ── Drop Zone ─────────────────────────────────────────────────── */
/* 静的スタイルのみ。border/background/box-shadowは動的なのでinline styleで */
.artria-dropzone {
  width: 100%;
  border-radius: 28px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  padding: 52px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
  cursor: pointer;
  transition: all .2s ease;
  position: relative;
}

/* ── Animations ────────────────────────────────────────────────── */
@keyframes artria-spin {
  to { transform: rotate(360deg); }
}

@keyframes artria-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes artria-fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.artria-spinner {
  width: 32px;
  height: 32px;
  border: 2.5px solid rgba(196, 181, 253, 0.25);
  border-top-color: #c4b5fd;
  border-radius: 50%;
  animation: artria-spin 0.8s linear infinite;
}