/* * Thinking & Youth Addict - Common Styles
 * 全ページ共通の「紙と写真」の世界観を作るコアCSS 
 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@100;300;400;700&family=Playfair+Display:ital,wght@0,400;1,400&family=Nanum+Pen+Script&display=swap');

:root {
    --paper-color: #f8f6f2;
    --accent-blue: rgba(199, 210, 254, 0.6);
    --text-main: #2a2a2a;
    --text-muted: #9ca3af;
}

/* --- Base Layout --- */
body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--paper-color);
    color: var(--text-main);
    overflow-x: hidden;
    /* 共通の紙テクスチャ */
    background-image: url("https://www.transparenttextures.com/patterns/natural-paper.png");
}

.serif { font-family: 'Playfair Display', serif; }
.handwritten { font-family: 'Nanum Pen Script', cursive; }

/* --- Components --- */

/* フォトカードの基本（Index/Gallery共通） */
.photo-card {
    background: #ffffff;
    padding: 12px 12px 45px 12px;
    box-shadow: 2px 5px 15px rgba(0,0,0,0.08), 0 0 50px rgba(0,0,0,0.02) inset;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    border: 1px solid rgba(0,0,0,0.03);
    display: block;
}

.photo-inner {
    border-radius: 1px;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

/* マスキングテープ */
.tape {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%) rotate(-1.5deg);
    width: 90px;
    height: 28px;
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(2px);
    border-left: 1px dashed rgba(0,0,0,0.1);
    border-right: 1px dashed rgba(0,0,0,0.1);
    z-index: 2;
}

/* コーヒーの染みなどの装飾 */
.stain {
    position: absolute;
    background: radial-gradient(circle, rgba(139, 69, 19, 0.03) 0%, rgba(139, 69, 19, 0) 70%);
    pointer-events: none;
    z-index: 0;
}

/* リンクボタン（共通スタイル） */
.btn-outline {
    display: inline-block;
    border: 1px solid currentColor;
    padding: 0.75rem 2rem;
    text-[10px] uppercase tracking-[0.3em] font-bold;
    transition: all 0.3s ease;
}

.btn-outline:hover {
    background-color: var(--text-main);
    color: #fff;
}

/* --- Animations --- */
.fade-in {
    animation: fadeIn 1.5s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 浮遊エフェクト（Indexで使用） */
@keyframes float {
    0% { transform: translateY(0px) rotate(var(--rot, 0deg)); }
    50% { transform: translateY(-10px) rotate(calc(var(--rot, 0deg) + 1deg)); }
    100% { transform: translateY(0px) rotate(var(--rot, 0deg)); }
}

.floating {
    animation: float 6s ease-in-out infinite;
}

.notebook-line {
   background-image: linear-gradient(rgba(0,0,0,0.05) 1px, transparent 1px);
   background-size: 100% 2rem;
   line-height: 2rem;
}
.tag {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 99px;
    background: rgba(0,0,0,0.05);
    color: #666;
    font-weight: bold;
}

textarea {
    min-height: 25rem !important; 
    line-height: 2.5rem;
    resize: vertical; 
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}
.letter-paper input, 
.letter-paper select, 
.letter-paper textarea {
    font-size: 14px;
    letter-spacing: 0.05em;
}

/* 罫線と文字がズレないように調整 */
.letter-paper textarea {
    background-image: linear-gradient(#e5e7eb 1px, transparent 1px);
    background-size: 100% 2.5rem;
    background-attachment: local;
}

/* PCのときの送信ボタンを少し大きく、存在感を出す */
.submit-btn {
    min-width: 240px;
    letter-spacing: 0.5em;
}

img {
    -webkit-user-drag: none; /* ドラッグ禁止 */
    user-select: none;
}