.work-item h3, .part-item h4 {
    color: #2a3550;
    font-weight: 600;
}
body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0 0 4rem 0;
    background: linear-gradient(135deg, #87CEEB, #FFFFFF);
    color: #222; /* немного темнее для лучшей читаемости */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    filter: contrast(1.06);
    min-height: 100vh;
}

main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background: linear-gradient(90deg, #4682B4, #5F9EA0, #4682B4);
    color: white;
    text-align: center;
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 3px solid #2E8B57;
}

nav a {
    color: #E8FFFF; /* светлый текст кнопок */
    margin: 0 1rem;
    text-decoration: none;
    transition: color 0.3s;
}

nav a:hover {
    color: #E8FFFF; /* не затемнять при hover */
}

/* active menu item */
nav a.active {
    color: #E8FFFF; /* светлый текст и в активном состоянии */
    font-weight: 700;
    text-decoration: none;
    background: rgba(0, 175, 177, 0.12);
    padding: 0.15rem 0.4rem;
    border-radius: 6px;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    margin: 2rem auto;
    max-width: 800px;
    animation: fadeIn 2s ease-in;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-family: 'Arial', sans-serif;
    background: linear-gradient(45deg, #4682B4, #00AFB1, #4682B4);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 18px rgba(70, 130, 180, 0.55);
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    background: linear-gradient(45deg, #5F9EA0, #00AFB1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 10px rgba(0, 206, 209, 0.35);
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    margin: 0 0.5rem;
    background: linear-gradient(45deg, #00AFB1, #4682B4);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s, transform 0.3s;
    box-shadow: 0 2px 10px rgba(0, 175, 177, 0.36);
}

.btn:hover {
    background: linear-gradient(45deg, #4682B4, #00AFB1);
    transform: scale(1.05);
    box-shadow: 0 4px 20px rgba(0, 175, 177, 0.54);
}

.preview {
    text-align: center;
    padding: 2rem;
    max-width: 600px;
    margin: 2rem auto;
}

.preview h3 {
    margin-bottom: 1rem;
}

audio {
    width: 100%;
    max-width: 400px;
}

.work-item {
    margin: 1rem 0;
    border: 1px solid rgba(255, 255, 255, 0.36);
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
}

.work-item h3 {
    cursor: pointer;
    padding: 1rem;
    margin: 0;
    background: rgba(176, 196, 222, 0.22);
    border-radius: 5px 5px 0 0;
    transition: background 0.3s;
    color: #2a3550;
}

.work-item h3:hover {
    background: rgba(176, 196, 222, 0.44);
    color: #00AFB1;
}

.work-content {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 0 0 5px 5px;
    color: #2a3550;
}

.part-item {
    margin: 0.5rem 0;
    border-left: 3px solid #00B4D8;
    padding-left: 1rem;
}

.part-item h4 {
    cursor: pointer;
    margin: 0;
    padding: 0.5rem;
    background: rgba(176, 196, 222, 0.1);
    color: #2a3550;
}

.part-item h4:hover {
    background: rgba(176, 196, 222, 0.2);
    color: #00AFB1;
}

.part-content {
    padding: 0.5rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 3px;
    color: #2a3550;
}

.part-content audio, .part-content video {
    width: 100%;
    max-width: 300px;
}

footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    text-align: center;
    background: rgba(30, 40, 60, 0.7);
    color: #e0e6f6;
    padding: 12px 0;
    font-size: 1.1em;
    z-index: 100;
    backdrop-filter: blur(6px);
    border-top: 3px solid #2E8B57;
}
.footer-content {
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}


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

/* Mobile / small screens adjustments */
@media (max-width: 600px) {
    header { padding: 0.6rem; }
    .hero { padding: 2rem 1rem; max-width: 100%; border-radius: 8px; }
    .hero h2 { font-size: 1.6rem; }
    .hero p { font-size: 0.95rem; }
    nav a { display: block; margin: 0.4rem 0; font-size: 1rem; }
    .btn { display: block; width: 100%; box-sizing: border-box; margin: 0.6rem 0; padding: 0.8rem 1rem; }
    main { padding: 1rem; }
    .work-item { margin: 0.6rem 0; }
    .work-item h3 { font-size: 1.05rem; }
    .work-content, .part-content { padding: 0.6rem; }
    .part-content audio, .part-content video { max-width: 100%; width: 100%; }
    /* Make footer static on mobile to avoid overlapping content */
    footer#site-footer { position: static !important; left: auto !important; bottom: auto !important; width: 100% !important; box-shadow: none; padding: 10px 8px !important; }
    .footer-content { align-items: center !important; justify-content: center !important; padding-left: 0 !important; }
}

/* Guestbook styles */
.guestbook { max-width: 900px; margin: 1rem auto; }
/* Align the main heading with the centered guestbook container */
main > h2 {
    max-width: 900px;
    margin: 1rem auto;
    padding: 0 0.5rem;
    box-sizing: border-box;
}
.guest-form label { display: block; margin-bottom: 0.75rem; font-weight: 600; }
.guest-form input[type="text"], .guest-form input[type="tel"], .guest-form input[type="email"], .guest-form textarea {
    width: 100%;
    padding: 0.6rem;
    border-radius: 6px;
    border: 1px solid rgba(0,0,0,0.18); /* чуть более контрастная граница */
    box-sizing: border-box;
}
.guest-actions { display: flex; gap: 0.5rem; margin-top: 0.6rem; }
.btn-secondary { background: transparent; color: #333; border: 1px solid rgba(0,0,0,0.08); }
.guest-entries { margin-top: 1rem; }
.guest-card { background: rgba(255,255,255,0.92); padding: 0.8rem; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); margin-bottom: 0.8rem; }
.guest-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.4rem; }
.guest-name { font-weight: 700; color: #2a3550; }
.guest-date { font-size: 0.85rem; color: #555; }
.guest-message { white-space: pre-wrap; color: #2a3550; }

/* Collapsible form wrapper */
.guest-form-wrapper {
    overflow: hidden;
    transition: max-height 0.35s ease, padding 0.25s ease, opacity 0.25s ease;
    max-height: 0; /* collapsed */
    opacity: 0;
    padding: 0 0;
}
.guest-form-wrapper.expanded {
    max-height: 2000px; /* large enough to show whole form */
    opacity: 1;
    padding: 0.75rem 0 0.5rem 0;
}
.guest-controls { margin-bottom: 0.6rem; }