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

body {
    font-family: 'Inter', sans-serif;
    transition: background-color 0.25s ease, color 0.2s ease;
    line-height: 1.5;
}

/* ----- Светлая тема (по умолчанию) ----- */
:root {
    --bg-body: #f8fafc;
    --bg-surface: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --border-light: #e2e8f0;
    --accent-color: #8b5cf6;
    --accent-hover: #7c3aed;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
    --btn-secondary-bg: #f1f5f9;
    --btn-secondary-hover: #e2e8f0;
    --footer-bg: #f1f5f9;
    --placeholder-bg: #f1f5f9;
    --img-border: #e2e8f0;
}

/* ----- Тёмная тема ----- */
body.dark {
    --bg-body: #0f172a;
    --bg-surface: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --border-light: #334155;
    --accent-color: #a78bfa;
    --accent-hover: #8b5cf6;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
    --btn-secondary-bg: #334155;
    --btn-secondary-hover: #475569;
    --footer-bg: #0f172a;
    --placeholder-bg: #1e293b;
    --img-border: #334155;
}

body {
    background-color: var(--bg-body);
    color: var(--text-primary);
}

/* Контейнер */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== HEADER ========== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-light);
    gap: 16px;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color), #c084fc);
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}

.logo p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* группа кнопок справа */
.right-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* кнопки регистрации / входа */
.auth-buttons {
    display: flex;
    gap: 10px;
}

.btn {
    font-weight: 600;
    padding: 8px 18px;
    border-radius: 40px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    font-family: inherit;
    background: none;
}

.btn-login {
    background-color: transparent;
    border-color: var(--border-light);
    color: var(--text-primary);
}

    .btn-login:hover {
        background-color: var(--btn-secondary-bg);
        border-color: var(--accent-color);
    }

.btn-signup {
    background-color: var(--accent-color);
    color: white;
    box-shadow: 0 2px 6px rgba(139,92,246,0.2);
}

    .btn-signup:hover {
        background-color: var(--accent-hover);
        transform: translateY(-1px);
    }

/* кнопка день/ночь */
.theme-toggle {
    background: var(--btn-secondary-bg);
    border: 1px solid var(--border-light);
    width: 42px;
    height: 42px;
    border-radius: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-primary);
}

    .theme-toggle:hover {
        background-color: var(--accent-color);
        color: white;
        transform: scale(1.03);
    }

/* ========== ИНФО ТЕКСТ (О САЙТЕ) ========== */
.info-section {
    margin: 48px 0 32px 0;
    background: var(--bg-surface);
    border-radius: 28px;
    padding: 32px 36px;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-light);
}

    .info-section h2 {
        font-size: 1.9rem;
        font-weight: 700;
        margin-bottom: 16px;
        letter-spacing: -0.01em;
    }

    .info-section .highlight {
        color: var(--accent-color);
    }

.info-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 32px;
    margin-top: 24px;
}

.info-card {
    flex: 1;
    min-width: 200px;
}

    .info-card i {
        font-size: 2rem;
        color: var(--accent-color);
        margin-bottom: 12px;
    }

    .info-card h3 {
        font-size: 1.25rem;
        margin-bottom: 8px;
    }

    .info-card p {
        color: var(--text-secondary);
    }

/* ========== МЕСТА ПОД КАРТИНКИ ========== */
.gallery-section {
    margin: 48px 0;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 28px;
    display: flex;
    align-items: center;
    gap: 12px;
}

    .section-title i {
        color: var(--accent-color);
        font-size: 1.8rem;
    }

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.image-card {
    background: var(--bg-surface);
    border-radius: 24px;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.3s;
    box-shadow: var(--card-shadow);
    border: 1px solid var(--border-light);
}

    .image-card:hover {
        transform: translateY(-6px);
        box-shadow: 0 20px 30px -12px rgba(0, 0, 0, 0.2);
    }

.img-placeholder {
    width: 100%;
    height: 200px;
    background-color: var(--placeholder-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

    .img-placeholder img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.4s ease;
        display: block;
    }

.image-card:hover .img-placeholder img {
    transform: scale(1.03);
}

.card-caption {
    padding: 16px 18px;
    border-top: 1px solid var(--border-light);
}

    .card-caption h4 {
        font-weight: 600;
        margin-bottom: 6px;
    }

    .card-caption p {
        font-size: 0.85rem;
        color: var(--text-secondary);
    }

/* Дополнительный текстовый блок (информация) */
.extra-text {
    background: var(--bg-surface);
    border-radius: 28px;
    padding: 32px 36px;
    margin: 40px 0 48px;
    border: 1px solid var(--border-light);
    box-shadow: var(--card-shadow);
}

    .extra-text h3 {
        font-size: 1.6rem;
        margin-bottom: 18px;
    }

    .extra-text p {
        color: var(--text-secondary);
        margin-bottom: 16px;
        font-size: 1.05rem;
    }

/* футер */
.footer {
    border-top: 1px solid var(--border-light);
    background: var(--footer-bg);
    padding: 28px 0;
    margin-top: 40px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* адаптивность */
@media (max-width: 720px) {
    .container {
        padding: 0 20px;
    }

    .header {
        flex-direction: column;
        align-items: stretch;
    }

    .right-actions {
        justify-content: flex-end;
    }

    .info-section, .extra-text {
        padding: 24px 20px;
    }

        .info-section h2 {
            font-size: 1.6rem;
        }

    .section-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .auth-buttons {
        gap: 8px;
    }

    .btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }

    .theme-toggle {
        width: 38px;
        height: 38px;
    }
}

button {
    cursor: pointer;
}