@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700&family=Roboto+Mono:wght@500&display=swap');

:root {
    --text-color: #e0e0e0;
    --primary-color: #00f2ea;
    --bg-color: #0d0c1d;
    --surface-color: rgba(30, 30, 45, 0.4);
    --border-color: rgba(255, 255, 255, 0.1);
    --red-color: #e94560;
    --blue-color: #5d5df2;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background: linear-gradient(-45deg, #0d0c1d, #0f1d1c, #0c1d2e, #18131a);
	background-size: 400% 400%;
	animation: gradient-animation 20s ease infinite;
    display: flex;
    flex-direction: column;
    text-align: center;
}
@keyframes gradient-animation {
	0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; }
}

/* --- Шапка --- */
.main-header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; width: 100%; flex-shrink: 0; }
.main-header .logo { font-size: 1.5rem; font-weight: bold; color: #fff; text-decoration: none; }
.main-nav { display: flex; align-items: center; gap: 1.5rem; }
.nav-link { font-size: 0.9rem; text-decoration: none; color: var(--text-color); opacity: 0.8; transition: opacity 0.2s; }
.nav-link:hover { opacity: 1; }
a { color: var(--primary-color); text-decoration: none; transition: all 0.2s ease-in-out; }
a:hover { color: #ffffff; }
.lang-switcher { display: flex; gap: 0.75rem; border: 1px solid var(--border-color); padding: 0.3rem 0.5rem; border-radius: 8px;}
.lang-switcher a { font-size: 0.8rem; text-decoration: none; }

/* --- Контент --- */
.content-container { flex-grow: 1; display: flex; justify-content: center; align-items: center; padding: 1rem; width: 100%; }
.form-container, .home-content .main-action-container { background: var(--surface-color); backdrop-filter: blur(10px); border: 1px solid var(--border-color); padding: 2.5rem; border-radius: 15px; max-width: 600px; width: 100%; }
.home-content .subtitle { font-size: 1.2rem; margin: 1rem 0 2.5rem 0; opacity: 0.8; }

/* --- Стили для логотипа --- */
.main-logo-img {
    max-width: 350px;
    width: 80%;
    height: auto;
    margin-bottom: 1rem;
}

/* --- ИЗМЕНЕНИЕ 1: Общие стили для полей ввода --- */
input[type="text"],
input[type="password"],
textarea {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 15px;
    color: var(--text-color);
    font-size: 1rem;
    width: 100%;
    font-family: 'Inter', sans-serif;
}

input[type="text"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 5px rgba(0, 242, 234, 0.3);
}

/* --- Комната чата --- */
.chat-container { width: 100%; max-width: 800px; height: 80vh; display: flex; flex-direction: column; background: var(--surface-color); border-radius: 15px; padding: 1rem; }
.chat-header { padding-bottom: 1rem; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; }
.room-info { display: flex; align-items: center; gap: 10px; }
.room-id-badge { background-color: rgba(0,0,0,0.3); padding: 5px 10px; border-radius: 5px; font-family: 'Roboto Mono', monospace; font-size: 0.9rem; color: var(--primary-color); border: 1px solid var(--border-color); }
.invite-controls input { background-color: rgba(0,0,0,0.3); border: 1px solid var(--border-color); color: var(--text-color); padding: 8px; border-radius: 5px; }

.messages { flex-grow: 1; overflow-y: auto; text-align: left; padding: 1rem 0.5rem; display: flex; flex-direction: column; gap: 0.75rem; }
.chat-message { max-width: 80%; width: fit-content; word-wrap: break-word; background: rgba(0,0,0,0.2); padding: 0.5rem 1rem; border-radius: 10px; }
.chat-message.system { background: none; text-align: center; max-width: 100%; color: var(--primary-color); font-style: italic; font-size: 0.9rem;}
.chat-message.incoming { align-self: flex-start; background-color: rgba(40, 40, 60, 0.5); border-left: 3px solid var(--primary-color); }
.chat-message.outgoing { align-self: flex-end; background-color: rgba(0, 242, 234, 0.15); }
.chat-message.fade-out { opacity: 0; transition: opacity 0.5s ease-out; }
.chat-message audio { filter: invert(1) sepia(1) saturate(5) hue-rotate(130deg); border-radius: 50px; max-width: 100%;}

.message-form { display: flex; gap: 0.5rem; align-items: flex-end; }
.message-form textarea { flex-grow: 1; resize: none; transition: height 0.2s; }
.button { background-color: var(--primary-color); color: var(--bg-color); border: none; padding: 0.8rem 1.5rem; border-radius: 8px; cursor: pointer; font-weight: bold; transition: all 0.2s; }
.button.secondary { background-color: rgba(255,255,255,0.1); color: var(--text-color); }
.button:hover { opacity: 0.8; }
.button.send-arrow, .button.attach-button { width: 50px; height: 50px; border-radius: 50%; padding: 12px; }

#attach-file-btn { background-color: var(--blue-color); }
#record-button { background-color: var(--red-color); }
#record-button.recording { animation: pulse 1.5s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(233, 69, 96, 0.7); } 70% { box-shadow: 0 0 0 10px rgba(233, 69, 96, 0); } 100% { box-shadow: 0 0 0 0 rgba(233, 69, 96, 0); } }

.ttl-select { background: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%2300f2ea' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e") no-repeat right 0.75rem center/10px 10px; background-color: rgba(255,255,255,0.1); color: var(--text-color); border: 1px solid var(--border-color); border-radius: 50px; padding: 0 25px 0 15px; height: 50px; cursor: pointer; -webkit-appearance: none; appearance: none; font-weight: bold; flex-shrink: 0; transition: all 0.2s; }
.ttl-select:hover { border-color: var(--primary-color); }
.ttl-select option { background-color: var(--bg-color); color: var(--text-color); }

.hidden { display: none !important; }

/* --- Подвал --- */
.main-footer { padding: 1.5rem; opacity: 0.5; flex-shrink: 0; }
.footer-links { margin-bottom: 1rem; display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* --- Оверлей для QR --- */
.overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(13,12,29,0.9); backdrop-filter: blur(5px); z-index: 100; display: flex; justify-content: center; align-items: center; padding: 1rem; }
#qr-code-overlay { z-index: 9999; }

/*
====================================
--- ФИНАЛЬНАЯ МОБИЛЬНАЯ АДАПТАЦИЯ ---
====================================
*/
@media (max-width: 768px) {
    body { font-size: 14px; }
    .main-header { flex-direction: column; gap: 1rem; padding: 1rem; }
    .main-nav { flex-wrap: wrap; justify-content: center; gap: 1rem; }
    .form-container, .home-content .main-action-container { padding: 1.5rem; }

    /* --- ИСПРАВЛЕНИЕ: Уменьшаем логотип на мобильных --- */
    .main-logo-img {
        max-width: 250px;
    }

    /* --- ГЛАВНЫЕ ИЗМЕНЕНИЯ ДЛЯ ЧАТА --- */
    .chat-container {
        height: 100vh; /* Занимает всю высоту экрана */
        height: -webkit-fill-available; /* Для iOS Safari */
        width: 100vw;
        max-width: 100vw;
        border-radius: 0;
        padding: 0.5rem;
        padding-bottom: 0;
    }
    .chat-header { padding: 0.5rem; }
    .invite-controls { width: 100%; display: flex; }
    .invite-controls input { flex-grow: 1; font-size: 12px; }

    .message-form {
        padding: 0.5rem;
        gap: 0.5rem;
        background-color: #0d0c1d; /* Непрозрачный фон */
        flex-wrap: wrap;
    }
    .message-form textarea {
        padding: 10px;
        min-height: 44px; /* Начальная высота */
        max-height: 120px; /* Ограничиваем максимальную высоту */
        flex-basis: 100%; /* Занимает всю ширину в первой строке */
        order: -1; /* Ставим его первым элементом */
    }
    .button.send-arrow, .button.attach-button, .ttl-select {
        width: 44px;
        height: 44px;
        padding: 10px;
    }
    .ttl-select { padding: 0 10px; }
}