@charset "UTF-8";
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root {
    --bg-color: #f2f2f7;
    --card-bg: rgba(255, 255, 255, 0.75);
    --primary-color: #007AFF;
    --text-main: #1c1c1e;
    --text-sub: #8e8e93;
    --danger-color: #ff3b30;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: radial-gradient(circle at 50% 0%, #eef2ff 0%, #f2f2f7 100%);
    user-select: none; /* テキスト選択禁止 */
}

.container {
    flex: 1;
    padding-top: 40px;
    padding-bottom: 40px;
    max-width: 900px;
}

/* iOS Glassmorphism Card */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 22px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    overflow: hidden;
}

/* Fade in animation */
.fade-in {
    animation: fadeIn 0.8s ease-in-out;
}
@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(10px); }
    100% { opacity: 1; transform: translateY(0); }
}

.btn {
    border-radius: 50px;
    padding: 12px 24px;
    font-weight: 500;
    border: none;
    transition: all 0.2s;
}
.btn-primary {
    background-color: var(--primary-color);
    box-shadow: 0 4px 14px rgba(0, 122, 255, 0.35);
}
.btn-primary:hover {
    background-color: #0062cc;
    transform: scale(1.02);
}
.btn-danger {
    background-color: var(--danger-color);
}

.form-control, .form-select {
    border-radius: 14px;
    border: 1px solid rgba(0,0,0,0.1);
    background-color: rgba(255,255,255,0.8);
    padding: 14px;
    font-size: 1rem;
}
.form-control:focus {
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
    border-color: var(--primary-color);
}

/* Drag & Drop */
#drop-area {
    border: 2px dashed #c7c7cc;
    border-radius: 22px;
    padding: 50px;
    text-align: center;
    background-color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s;
}
#drop-area.highlight {
    border-color: var(--primary-color);
    background-color: rgba(0, 122, 255, 0.08);
    transform: scale(1.01);
}

footer {
    margin-top: auto;
    padding: 30px 0;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-sub);
}
footer a { color: var(--text-sub); text-decoration: none; margin: 0 10px; transition: color 0.2s; }
footer a:hover { color: var(--primary-color); }