/*Базовий стиль для всіх тем */
body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    transition: background 0.5s, color 0.5s;
}

html {
    scroll-behavior: smooth;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    background-color: #e3c8ff;
    box-shadow: 0 2px 6px rgba(100, 0, 100, 0.2);
}

.navbar ul {
    display: flex;
    gap: 15px;
    list-style: none;
    padding: 10px 0;
    margin: 0;
}

.navbar li a {
    color: #6a1b9a;
    text-transform: uppercase;
    font-weight: bold;
    padding: 8px 16px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.navbar li a:hover {
    background-color: #d1a3ff;
    color: #ffffff;
}

header, section {
    max-width: 900px;
    margin: 20px auto;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(120, 0, 150, 0.2);
    background-color: rgba(255, 255, 255, 0.95);
}

h1, h2 {
    text-align: center;
    text-transform: uppercase;
    color: #6a1b9a;
}

img[alt*="Фото"] {
    display: block;
    margin: 10px auto;
    border-radius: 50%;
    border: 3px solid #ba68c8;
    box-shadow: 0 0 10px #ba68c8;
}

ul {
    list-style: square inside;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

li {
    background-color: #f3e5f5;
    padding: 5px 10px;
    border-radius: 5px;
    transition: transform 0.2s, background-color 0.2s;
}

li:hover {
    transform: scale(1.05);
    background-color: #e1bee7;
}

a {
    color: #6a1b9a;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    color: #8e24aa;
}

a[target="_blank"]:hover {
    color: #ab47bc;
}

/* Footer (інформація про систему) */
footer {
    background-color: #1a0000;
    color: white;
    padding: 20px;
    text-align: center;
    white-space: pre-wrap;
    font-family: monospace;
}

/* Світло-фіолетова денна тема */
body.day-theme {
    background: linear-gradient(to right, #f3e8ff, #e6d6ff);
    color: #3a245d;
}

body.day-theme .navbar {
    background-color: #e3c8ff;
    box-shadow: 0 2px 6px rgba(100, 0, 100, 0.2);
}

body.day-theme .navbar li a {
    color: #6a1b9a;
}

body.day-theme .navbar li a:hover {
    background-color: #d1a3ff;
    color: #ffffff;
}

body.day-theme header,
body.day-theme section {
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(120, 0, 150, 0.2);
}

body.day-theme h1,
body.day-theme h2 {
    color: #6a1b9a;
}

body.day-theme img[alt*="Фото"] {
    border: 3px solid #ba68c8;
    box-shadow: 0 0 10px #ba68c8;
}

body.day-theme li {
    background-color: #f3e5f5;
}

body.day-theme li:hover {
    background-color: #e1bee7;
}

body.day-theme a {
    color: #6a1b9a;
}

body.day-theme a:hover {
    color: #8e24aa;
}

body.day-theme a[target="_blank"]:hover {
    color: #ab47bc;
}

body.day-theme #feedback-modal {
    background: #f9e6ff;
    border-color: #ba68c8;
    box-shadow: 0 0 15px rgba(186, 104, 200, 0.5);
}

body.day-theme #feedback-modal button {
    background-color: #ba68c8;
}

body.day-theme #feedback-modal button[type="button"] {
    background-color: #999;
}

/* Темно-фіолетова нічна тема */
body.night-theme {
    background: linear-gradient(to right, #1b0a2a, #2a0033);
    color: #e1d4f7;
}

body.night-theme .navbar {
    background-color: #3d0066;
    box-shadow: 0 2px 6px rgba(160, 64, 255, 0.4);
}

body.night-theme .navbar li a {
    color: #d0aaff;
}

body.night-theme .navbar li a:hover {
    background-color: #550088;
    color: #ffffff;
}

body.night-theme header,
body.night-theme section {
    background-color: rgba(40, 0, 60, 0.85);
    box-shadow: 0 4px 12px rgba(200, 100, 255, 0.3);
}

body.night-theme h1,
body.night-theme h2 {
    color: #ddaaff;
}

body.night-theme img[alt*="Фото"] {
    border: 3px solid #9c27b0;
    box-shadow: 0 0 10px #ce93d8;
}

body.night-theme li {
    background-color: #4a2a66;
}

body.night-theme li:hover {
    background-color: #6a3b8c;
}

body.night-theme a {
    color: #ddaaff;
}

body.night-theme a:hover {
    color: #f3cfff;
}

body.night-theme a[target="_blank"]:hover {
    color: #e1bee7;
}

body.night-theme #feedback-modal {
    background: #2e003f;
    border-color: #9c27b0;
    box-shadow: 0 0 15px rgba(156, 39, 176, 0.5);
}

body.night-theme #feedback-modal button {
    background-color: #9c27b0;
}

body.night-theme #feedback-modal button[type="button"] {
    background-color: #777;
}

/* Перемикач теми */
.theme-toggle {
    position: fixed;
    top: 15px;
    right: 15px;
    z-index: 1001;
}

.theme-toggle input[type="checkbox"] {
    display: none;
}

.theme-toggle label {
    display: inline-block;
    width: 60px;
    height: 30px;
    background-color: #ccc;
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s;
}

.theme-toggle label::after {
    content: '';
    width: 26px;
    height: 26px;
    background: white;
    position: absolute;
    top: 2px;
    left: 2px;
    border-radius: 50%;
    transition: 0.3s;
}

#themeSwitch:checked + label {
    background-color: #ba68c8;
}

#themeSwitch:checked + label::after {
    transform: translateX(30px);
}

/* Модальне вікно */
#feedback-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #f9e6ff;
    border: 2px solid #ba68c8;
    padding: 20px;
    border-radius: 12px;
    z-index: 1000;
    box-shadow: 0 0 15px rgba(186, 104, 200, 0.5);
    max-width: 400px;
    width: 90%;
}

#feedback-modal h2 {
    margin-top: 0;
    text-align: center;
}

#feedback-modal input,
#feedback-modal textarea {
    width: 100%;
    margin: 8px 0;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #ccc;
    font-size: 1em;
}

#feedback-modal button {
    margin-top: 10px;
    width: 48%;
    padding: 10px;
    border: none;
    border-radius: 5px;
    background-color: #ba68c8;
    color: white;
    font-weight: bold;
    cursor: pointer;
}

#feedback-modal button[type="button"] {
    background-color: #999;
}

#feedback-modal button:hover {
    opacity: 0.9;
}

/* Адаптивність */
@media screen and (max-width: 768px) {
    body {
        font-size: 16px;
    }

    img[alt*="Фото"] {
        width: 100px;
        height: 100px;
    }

    .navbar ul {
        flex-direction: column;
        gap: 10px;
    }

    section ul {
        flex-direction: column;
        align-items: center;
    }
}