/***************
    NAV
****************/

.nav {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 10px 0;
    position: relative;
}

.nav__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

/* ЛОГОТИП */
.nav__logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.nav__logo:hover {
    opacity: 0.8;
}

.nav__logo-placeholder {
    padding: 6px 12px;
    background: var(--color-accent);
    border-radius: var(--radius-md);
    color: var(--color-text);
}

/* МЕНЮ (десктоп) */
.nav__menu {
    display: flex;
    gap: 24px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav__item {
    margin: 0;
}

.nav__link {
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s ease;
    position: relative;
    padding: 8px 0;
}

.nav__link:hover {
    color: var(--color-accent);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav__link:hover::after {
    width: 100%;
}

/* ЛИЧНЫЙ КАБИНЕТ */
.nav__user {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nav__user-link {
    font-weight: 500;
    color: var(--color-text);
    text-decoration: none;
    transition: color 0.2s ease;
}

.nav__user-link:hover {
    color: var(--color-accent);
}

.nav__logout-form {
    margin: 0;
}

.nav__logout-btn,
.nav__user-btn {
    padding: 8px 16px;
    background: var(--color-accent);
    color: var(--color-text);
    border-radius: var(--radius-md);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
    display: inline-block;
    font-family: inherit;
    font-size: inherit;
}

.nav__logout-btn:hover,
.nav__user-btn:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* БУРГЕР */
.nav__burger {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease;
}

.nav__burger:hover {
    background: var(--color-surface-alt);
}

.nav__burger-line {
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s ease;
    transform-origin: center;
}

/* Активное состояние бургера */
.nav__burger--active .nav__burger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav__burger--active .nav__burger-line:nth-child(2) {
    opacity: 0;
}

.nav__burger--active .nav__burger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* МОБИЛЬНОЕ МЕНЮ */
.nav__mobile {
    display: none;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: 20px;
    z-index: 1000;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.nav__mobile.nav__mobile_open {
    transform: translateX(0);
}

.nav__mobile-menu {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav__mobile-link {
    display: block;
    padding: 16px 0;
    font-size: 1rem;
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid var(--color-border);
    transition: all 0.2s ease;
    background: none;
    border: none;
    font-family: inherit;
    font-size: inherit;
    text-align: left;
    width: 100%;
    cursor: pointer;
}

.nav__mobile-link:hover, .nav__mobile-link:focus {
    color: var(--color-accent);
    background: var(--color-surface-alt);
    padding-left: 12px;
}

.nav__mobile-separator {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 16px 0;
}

/* Форма выхода в мобильном меню */
.nav__mobile-menu form {
    margin: 0;
}

/***************
    АДАПТИВ
****************/

@media (max-width: 900px) {
    .nav__menu,
    .nav__user {
        display: none;
    }

    .nav__burger {
        display: flex;
    }

    .nav__mobile {
        display: block;
    }
}

/* Планшеты в альбомной ориентации */
@media (max-width: 1024px) and (orientation: landscape) {
    .nav__mobile {
        padding: 15px;
    }
    
    .nav__mobile-link {
        padding: 12px 0;
    }
}

/* Маленькие мобильные */
@media (max-width: 480px) {
    .nav__container {
        gap: 15px;
        padding: 0 15px;
    }
    
    .nav__mobile {
        padding: 15px;
    }
    
    .nav__logo {
        font-size: 1.2rem;
    }
}

/* Улучшения для доступности */
@media (prefers-reduced-motion: reduce) {
    .nav__burger-line,
    .nav__mobile,
    .nav__link,
    .nav__logout-btn,
    .nav__user-btn {
        transition: none;
    }
}

/* Поддержка высокого контраста */
@media (prefers-contrast: high) {
    .nav__link::after {
        height: 3px;
    }
    
    .nav__mobile-link {
        border-bottom-width: 2px;
    }
}

/* Темная тема */
@media (prefers-color-scheme: dark) {
    .nav {
        background: var(--color-surface);
        border-bottom-color: var(--color-border);
    }
    
    .nav__mobile {
        background: var(--color-surface);
    }
}


/* Стили для компактного переключателя тем */

/* Контейнер правой части */
.nav__right {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Компактный переключатель тем */
.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    background: var(--color-surface);
    transform: scale(1.05);
    box-shadow: var(--shadow-sm);
    border-color: var(--color-accent);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-toggle__icon {
    width: 20px;
    height: 20px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Иконки для каждой темы */
.theme-toggle__icon::before {
    content: '';
    font-size: 1.2rem;
    transition: all 0.3s ease;
}

/* Light theme - Луна */
[data-theme="light"] .theme-toggle__icon::before {
    content: '🌙';
}

/* Dark theme - Солнце */
[data-theme="dark"] .theme-toggle__icon::before {
    content: '☀️';
}

/* Solarized theme - Палитра */
[data-theme="solarized"] .theme-toggle__icon::before {
    content: '🎨';
}


/* Адаптивность для переключателя тем */
@media (max-width: 900px) {
    .nav__right .theme-toggle {
        display: flex;
    }
}

/* Дополнительный CSS для красивого тултипа при наведении */
.theme-toggle {
    position: relative;
}

.theme-toggle::after {
    content: attr(title);
    position: absolute;
    top: 50%;
    right: 110%;
    transform: translateY(-50%);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    pointer-events: none;
}

.theme-toggle:hover::after {
    opacity: 1;
    visibility: visible;
}