:root {
    /* --- LIGHT THEME (Sunset/Peach) --- */
    --bg-main: #fceade;          /* Мягкий персиковый фон неба */
    --bg-surface: #ffdbc5;       /* Поверхность карточек */
    --text-main: #4a2c2a;        /* Глубокий кофейный текст */
    --text-muted: #8d5d4a;       /* Приглушенный коричневый */
    --primary-accent: #e67e5f;   /* Насыщенный оранжевый заката */
    --border-color: #c9967e;     /* Усиленный контраст для границ (был #dcb09b) */
    --shadow-color: rgba(74, 44, 42, 0.25);
    --wallpaper-opacity: 1;
    --wallpapper: url("wallpaper_light.png");
    --font-main: 'Cozette', monospace;
}

body.dark-theme {
    /* --- DARK THEME (Midnight/Teal) --- */
    --bg-main: #141b1e;          /* Глубокий темный фон */
    --bg-surface: #1e2d2f;       /* Темная бирюза карточек */
    --text-main: #d1e2e2;        /* Светло-голубой текст */
    --text-muted: #78909c;       /* Холодный серый */
    --primary-accent: #ff7043;   /* Яркий оранжевый (камин) */
    --border-color: #2c3e41;     /* Темные границы */
    --shadow-color: rgba(0, 0, 0, 0.4);
    --wallpaper-opacity: 0.9;
    --wallpapper: url("wallpaper_dark.png");
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-main);
    color: var(--text-main);
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    overflow-x: hidden;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--wallpapper) no-repeat center center fixed;
    background-size: cover;
    z-index: -1;
    opacity: var(--wallpaper-opacity);   
}

@keyframes fadeInWallpaper {
    from { opacity: 0; }
    to { opacity: 1; }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

/* --- Header & Typography --- */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 3rem;
    letter-spacing: 4px;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateY(-20px);
    color: var(--text-main);
}

.time-display {
    font-size: 5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    opacity: 0;
    color: var(--text-main);
}

.date-display {
    font-size: 1.3rem;
    color: var(--text-main);
    margin-bottom: 2rem;
    opacity: 0;
}

/* --- Widgets --- */
.weather-widget {
    position: fixed;
    top: 2rem;
    left: 2rem;
    background-color: var(--bg-surface);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 4px 12px var(--shadow-color);
    border: 2px solid var(--border-color); /* Сделано чуть толще для контраста */
    color: var(--text-main);
    max-width: 360px;
    opacity: 0;
    transform: translateY(10px);
    z-index: 10;
    transition: all 0.3s ease;
}

.weather-widget:hover {
    transform: translateY(-5px);
    border-color: var(--primary-accent);
    box-shadow: 0 8px 20px var(--shadow-color);
}

.weather-content {
    display: flex;
    align-items: center;
}

.weather-icon {
    margin-right: 1rem;
}

.weather-icon img {
    width: 40px;
    height: 40px;
    filter: brightness(0.8) sepia(0.2); /* Адаптация под теплую тему */
}

body.dark-theme .weather-icon img {
    filter: invert(1) brightness(1.2) hue-rotate(180deg);
}

.weather-info {
    display: flex;
    flex-direction: column;
}

.weather-temp {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--text-main);
}

.weather-description {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: capitalize;
}

/* --- Search --- */
.search-container {
    margin: 2rem auto;
    max-width: 600px;
    opacity: 0;
    position: relative;
    z-index: 100;
    transition: transform 0.3s;
}

.search-form {
    display: flex;
    align-items: center;
    background-color: var(--bg-surface);
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.search-container:hover .search-form,
.search-form:focus-within {
    border-color: var(--primary-accent);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.search-input {
    flex: 1;
    padding: 1rem;
    background-color: transparent;
    border: none;
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 1rem;
    outline: none;
}

.search-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.search-button .icon {
    width: 24px;
    height: 24px;
    filter: grayscale(1) brightness(0.5);
    transition: filter 0.3s;
}

body.dark-theme .search-button .icon {
    width: 24px;
    height: 24px;
    filter: grayscale(1) brightness(0.5) invert(0.8);
    transition: filter 0.3s;
}

.search-form:focus-within .icon {
    filter: none;
}

.engine-button {
    padding: 0 1rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-main);
    font-family: var(--font-main);
    font-size: 0.9rem;
    white-space: nowrap;
}

.engine-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    list-style: none;
    margin-top: 6px;
    padding: 4px 0;
    display: none;
    box-shadow: 0 8px 20px var(--shadow-color);
    z-index: 200;
}

.engine-list.show {
    display: block;
}

.engine-list li {
    padding: 8px 14px;
    cursor: pointer;
    transition: background 0.2s;
}

.engine-list li:hover {
    background: var(--primary-accent);
    color: #fff;
}

/* --- Grid Section --- */
.keyboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    max-width: 1100px;
    margin: 2rem auto;
}

.key-section {
    background-color: var(--bg-surface);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px var(--shadow-color);
    border: 1.5px solid var(--border-color);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.key-section:hover {
    transform: translateY(-8px);
    border-color: var(--primary-accent);
    box-shadow: 0 10px 25px var(--shadow-color);
}

.key-section h3 {
    color: var(--primary-accent);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.key-links {
    list-style: none;
}

.key-links li {
    margin-bottom: 0.8rem;
    position: relative;
}

.key-links a {
    display: flex;
    align-items: center;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.2s ease;
    font-size: 0.95rem;
}

.key-links a:hover {
    color: var(--primary-accent);
    transform: translateX(5px);
}

.key-links .icon {
    margin-right: 0.7rem;
    width: 18px;
    height: 18px;
    filter: grayscale(0.5);
    transition: filter 0.3s;
}

.key-links a:hover .icon {
    filter: grayscale(0);
}

body.dark-theme .key-links .icon {
    filter: invert(0.8);
}

/* --- Footer --- */
.footer {
    text-align: center;
    margin-top: 3rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    opacity: 0;
}

/* --- Theme Toggle --- */
.theme-toggle {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-surface);
    border: 2px solid var(--border-color);
    color: var(--text-main);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px var(--shadow-color);
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.theme-toggle:hover {
    border-color: var(--primary-accent);
    transform: rotate(15deg) scale(1.1);
}

/* --- Mobile Responsive --- */
@media (max-width: 768px) {
    .keyboard { grid-template-columns: 1fr; }
    
    .time-display { font-size: 3.5rem; }
    
    .weather-widget {
        position: relative;
        top: 0; left: 0;
        margin: 0 auto 2rem;
        max-width: 100%;
    }
    
    .key-links a {
        font-size: 1.1rem;
        padding: 8px 0;
    }
}

/* Font face */
@font-face {
    font-family: 'Cozette';
    src: url('fonts/CozetteVector.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}