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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background: linear-gradient(135deg, #001a1a, #002a2a, #001515);
    color: #fff;
    min-height: 100vh;
}

.container { max-width: 640px; margin: 0 auto; padding: 20px 16px; }

header { text-align: center; padding: 30px 0 20px; }

h1 {
    font-size: 1.8rem; font-weight: 900;
    background: linear-gradient(90deg, #00bcd4, #26c6da);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.subtitle { margin-top: 8px; color: #aaa; font-size: 0.9rem; }

.input-section { margin-top: 24px; }
.step { margin-bottom: 28px; }

.step h2 {
    font-size: 0.95rem; margin-bottom: 12px; color: #ccc;
    display: flex; align-items: center; gap: 8px;
}

.step-num {
    display: inline-flex; align-items: center; justify-content: center;
    width: 24px; height: 24px;
    background: linear-gradient(135deg, #00bcd4, #26c6da);
    border-radius: 50%; font-size: 0.75rem; font-weight: 700; color: #fff;
}

.scene-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }

.scene-btn {
    background: rgba(255,255,255,0.07); border: 2px solid transparent;
    color: #fff; padding: 12px 6px; border-radius: 12px;
    font-size: 0.8rem; font-family: inherit; cursor: pointer; transition: all 0.2s;
}
.scene-btn:hover { background: rgba(255,255,255,0.13); }
.scene-btn.active { border-color: #00bcd4; background: rgba(0,188,212,0.15); }

.chara-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }

.chara-btn {
    background: rgba(255,255,255,0.07); border: 2px solid transparent;
    color: #fff; padding: 12px 6px; border-radius: 12px;
    font-size: 0.8rem; font-family: inherit; cursor: pointer; transition: all 0.2s;
}
.chara-btn:hover { background: rgba(255,255,255,0.13); }
.chara-btn.active { border-color: #00bcd4; background: rgba(0,188,212,0.15); }

.impression-buttons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; }

.impression-btn {
    background: rgba(255,255,255,0.07); border: 2px solid transparent;
    color: #fff; padding: 14px 6px; border-radius: 12px;
    font-family: inherit; cursor: pointer; transition: all 0.2s;
    display: flex; flex-direction: column; align-items: center; gap: 4px;
}
.impression-btn:hover { background: rgba(255,255,255,0.13); }
.impression-btn.active { border-color: #00bcd4; background: rgba(0,188,212,0.15); }
.impression-emoji { font-size: 1.5rem; }
.impression-label { font-size: 0.8rem; font-weight: 700; }

.generate-btn {
    width: 100%; margin-top: 8px; padding: 16px;
    background: linear-gradient(90deg, #00bcd4, #26c6da);
    border: none; border-radius: 14px; color: #fff;
    font-size: 1.1rem; font-weight: 700; font-family: inherit;
    cursor: pointer; transition: all 0.3s;
}
.generate-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.generate-btn:not(:disabled):hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,188,212,0.4); }

.result-section { margin-top: 32px; animation: fadeInUp 0.5s ease; }

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-card {
    background: rgba(255,255,255,0.08); backdrop-filter: blur(10px);
    border-radius: 20px; padding: 24px; border: 1px solid rgba(255,255,255,0.12);
}

.result-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 16px; }

.tag { padding: 3px 10px; border-radius: 20px; font-size: 0.7rem; font-weight: 700; }
.scene-tag { background: rgba(0,188,212,0.2); color: #4dd0e1; }
.chara-tag { background: rgba(38,198,218,0.2); color: #26c6da; }
.impression-tag { background: rgba(255,255,255,0.1); color: #ccc; }

.intro-showcase { margin: 24px 0; }

.intro-text {
    font-size: 1.05rem; line-height: 1.8;
    padding: 20px;
    background: rgba(0,188,212,0.08);
    border-left: 3px solid #00bcd4;
    border-radius: 0 12px 12px 0;
}

.intro-subtitle { margin-top: 10px; font-size: 0.85rem; color: #aaa; text-align: right; }

.alt-intros { margin-top: 20px; }
.alt-intros h3 { font-size: 0.85rem; color: #00bcd4; margin-bottom: 8px; }

.alt-list { display: flex; flex-direction: column; gap: 8px; }

.alt-chip {
    background: rgba(255,255,255,0.07); border: 1px solid rgba(255,255,255,0.15);
    padding: 10px 14px; border-radius: 10px; font-size: 0.85rem;
    cursor: pointer; transition: all 0.2s; line-height: 1.6;
}
.alt-chip:hover { background: rgba(0,188,212,0.15); border-color: #00bcd4; }

.intro-stats { margin-top: 20px; }

.stat-row {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 8px; font-size: 0.8rem;
}

.stat-label { width: 90px; color: #888; flex-shrink: 0; }

.stat-bar {
    flex: 1; height: 8px;
    background: rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden;
}

.stat-fill {
    height: 100%; border-radius: 4px; transition: width 0.6s ease;
}

.impact-fill { background: linear-gradient(90deg, #00bcd4, #26c6da); }
.likable-fill { background: linear-gradient(90deg, #26c6da, #4dd0e1); }
.memorable-fill { background: linear-gradient(90deg, #00bcd4, #00838f); }

.stat-value { width: 36px; text-align: right; color: #aaa; font-size: 0.75rem; }

.tip {
    margin-top: 16px; padding: 12px 16px;
    background: rgba(0,188,212,0.1); border-radius: 10px;
    font-size: 0.8rem; color: #a0aec0; border-left: 3px solid #00bcd4;
}

.share-buttons { display: flex; gap: 10px; margin-top: 16px; }

.share-btn {
    flex: 1; padding: 12px; border: 2px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.05); color: #fff; border-radius: 12px;
    font-size: 0.8rem; font-family: inherit; cursor: pointer; transition: all 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.share-btn:hover { transform: translateY(-2px); }

.btn-x { border-color: rgba(255,255,255,0.2); }
.btn-x:hover { background: rgba(255,255,255,0.15); box-shadow: 0 4px 12px rgba(255,255,255,0.1); }

.btn-line { border-color: rgba(6,199,85,0.3); }
.btn-line:hover { background: rgba(6,199,85,0.15); box-shadow: 0 4px 12px rgba(6,199,85,0.2); }

.btn-copy { border-color: rgba(0,188,212,0.3); }
.btn-copy:hover { background: rgba(0,188,212,0.15); box-shadow: 0 4px 12px rgba(0,188,212,0.2); }

.retry-btn {
    width: 100%; margin-top: 10px; padding: 14px;
    border: 2px solid rgba(255,255,255,0.15);
    background: rgba(255,255,255,0.05); color: #fff; border-radius: 12px;
    font-size: 0.9rem; font-weight: 700; font-family: inherit; cursor: pointer; transition: all 0.2s;
}
.retry-btn:hover { background: rgba(255,255,255,0.12); }

.toast {
    position: fixed; bottom: -50px; left: 50%; transform: translateX(-50%);
    background: #00bcd4; color: #fff; padding: 10px 24px; border-radius: 10px;
    font-weight: 700; font-size: 0.85rem; transition: bottom 0.3s ease; z-index: 100;
}
.toast.show { bottom: 30px; }

footer { margin-top: 48px; text-align: center; color: #555; font-size: 0.75rem; padding-bottom: 24px; }
footer .copyright { margin-top: 8px; }

@media (max-width: 400px) {
    h1 { font-size: 1.4rem; }
    .scene-grid { grid-template-columns: repeat(2, 1fr); }
    .chara-grid { grid-template-columns: repeat(2, 1fr); }
    .impression-buttons { grid-template-columns: repeat(2, 1fr); }
}