/* ========== БАЗОВЫЕ НАСТРОЙКИ ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
}

:root {
    --bg-color: #fef9e7;
    --text-color: #1e3a5f;
    --card-bg: #ffffff;
    --button-bg: #2b6f9c;
    --button-text: #ffffff;
    --accent: #c44536;
    --border: #b0c4de;
    --shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    --font-size-base: 22px;
}

body.dark-theme {
    --bg-color: #192f42;
    --text-color: #f0f4fa;
    --card-bg: #2a3f54;
    --button-bg: #4f8bb9;
    --button-text: #ffffff;
    --accent: #e67e5a;
    --border: #5f7d9c;
    --shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

body.large-font {
    --font-size-base: 32px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: var(--font-size-base);
    line-height: 1.5;
    transition: background-color 0.2s, color 0.2s;
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
}

/* ========== ВЕРХНЯЯ ПАНЕЛЬ (УВЕЛИЧЕНА) ========== */
.top-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    background-color: var(--card-bg);
    padding: 1.5rem 2.5rem;
    border-radius: 80px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
    border: 3px solid var(--border);
}

.logo {
    font-size: calc(var(--font-size-base) * 1.6);
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 1px;
}

.settings-panel {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.icon-btn {
    background: var(--button-bg);
    color: var(--button-text);
    border: none;
    border-radius: 60px;
    padding: 1rem 2rem;
    font-size: calc(var(--font-size-base) * 1);
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    border: 2px solid transparent;
    transition: all 0.1s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.icon-btn:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
    border-color: var(--accent);
}

/* ========== ПРИВЕТСТВИЕ ПОЛЬЗОВАТЕЛЯ ========== */
.user-greeting {
    background-color: var(--card-bg);
    border: 2px solid var(--accent);
    border-radius: 60px;
    padding: 1rem 2rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 1.5rem;
    font-weight: 600;
}

.user-greeting button.small {
    padding: 0.8rem 2rem;
    font-size: 1.2rem;
}

/* ========== НАСТРОЙКИ ========== */
.settings-popup {
    background: var(--card-bg);
    border: 4px solid var(--accent);
    border-radius: 60px;
    padding: 2rem;
    margin: 2rem 0;
    display: none;
    box-shadow: var(--shadow);
}

.settings-popup.visible {
    display: block;
}

.settings-title {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
    font-weight: 700;
}

.settings-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin: 1.5rem 0;
}

.settings-label {
    min-width: 200px;
    font-weight: 600;
}

.toggle-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.toggle-option {
    background: var(--button-bg);
    color: var(--button-text);
    padding: 0.8rem 2rem;
    border-radius: 40px;
    cursor: pointer;
    border: 2px solid transparent;
    font-weight: 600;
}

.toggle-option.active {
    background: var(--accent);
    border-color: white;
}

.secondary-btn {
    background: var(--button-bg);
    color: var(--button-text);
    font-weight: 600;
    border: 3px solid var(--border);
    border-radius: 60px;
    padding: 1rem 2.5rem;
    font-size: calc(var(--font-size-base) * 1.1);
    cursor: pointer;
    margin-top: 1rem;
}

/* ========== МОДАЛЬНОЕ ОКНО ВХОДА ========== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 3rem;
    border-radius: 60px;
    max-width: 600px;
    width: 90%;
    border: 5px solid var(--accent);
    position: relative;
}

.close-modal {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    font-size: 3rem;
    cursor: pointer;
    color: var(--accent);
}

.modal-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.modal-content p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.modal-content input {
    width: 100%;
    padding: 1.2rem;
    font-size: 1.3rem;
    border-radius: 40px;
    border: 3px solid var(--border);
    margin-bottom: 1.5rem;
}

.modal-content .primary-btn {
    width: 100%;
    margin-bottom: 1rem;
}

/* ========== МОДАЛЬНОЕ ОКНО СООБЩЕНИЙ ========== */
.message-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
}

.message-modal-content {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 60px;
    max-width: 500px;
    width: 80%;
    text-align: center;
    border: 5px solid var(--accent);
    position: relative;
}

.message-modal-content p {
    font-size: 1.5rem;
    margin: 2rem 0;
}

.close-message-modal {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--accent);
}

/* ========== LIGHTBOX ========== */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1200;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 20px;
    box-shadow: 0 0 30px rgba(0,0,0,0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 40px;
    font-size: 4rem;
    color: white;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

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

/* ========== ЛИЧНЫЙ КАБИНЕТ ========== */
.profile-header {
    background-color: var(--card-bg);
    border-radius: 40px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 3px solid var(--accent);
}

.profile-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.profile-header p {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.progress-list, .certificates-list {
    background-color: var(--card-bg);
    border-radius: 40px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 2px solid var(--border);
}

.progress-item, .certificate-item {
    padding: 1rem;
    border-bottom: 2px solid var(--border);
    font-size: 1.2rem;
}

.progress-item:last-child, .certificate-item:last-child {
    border-bottom: none;
}

/* ========== ГЛАВНОЕ МЕНЮ ========== */
.main-title {
    font-size: 3rem;
    margin: 2rem 0 1rem;
    color: var(--accent);
}

.main-subtitle {
    font-size: 1.8rem;
    margin-bottom: 2rem;
}

.section-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.section-card {
    background-color: var(--card-bg);
    border-radius: 40px;
    padding: 2rem 1.5rem;
    box-shadow: var(--shadow);
    border: 3px solid var(--border);
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
}

.section-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: calc(var(--font-size-base) * 1.5);
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.section-desc {
    font-size: calc(var(--font-size-base) * 0.9);
    opacity: 0.9;
}

/* ========== ХЛЕБНЫЕ КРОШКИ ========== */
.breadcrumbs {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    background: var(--card-bg);
    padding: 1rem 2rem;
    border-radius: 50px;
    margin-bottom: 2rem;
    border: 2px solid var(--border);
    font-size: calc(var(--font-size-base) * 0.9);
}

.breadcrumb-link {
    color: var(--accent);
    font-weight: 600;
    cursor: pointer;
}

/* ========== СПИСОК УРОКОВ ========== */
.section-header {
    background-color: var(--card-bg);
    border-radius: 40px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 3px solid var(--border);
}

.section-header-title {
    font-size: 2.8rem;
    color: var(--accent);
}

.lessons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.lesson-card {
    background: var(--card-bg);
    border: 3px solid var(--border);
    border-radius: 30px;
    padding: 1.8rem;
    cursor: pointer;
    transition: all 0.15s;
}

.lesson-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
}

.lesson-card.completed {
    border-color: #4caf50;
    background-color: rgba(76, 175, 80, 0.1);
}

.lesson-card-number {
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.lesson-card-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
}

.lesson-card-desc {
    font-size: 1.3rem;
    opacity: 0.9;
}

/* ========== СТРАНИЦА УРОКА ========== */
.lesson-header {
    background-color: var(--card-bg);
    border-radius: 40px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 3px solid var(--border);
}

.lesson-title {
    font-size: calc(var(--font-size-base) * 2);
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 1rem;
}

.lesson-goal {
    font-size: calc(var(--font-size-base) * 1.3);
    background: var(--bg-color);
    padding: 1rem 2rem;
    border-radius: 60px;
    border-left: 10px solid var(--accent);
}

.step-item {
    background: var(--card-bg);
    border-radius: 40px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 2px solid var(--border);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

/* Текстовая часть (слева) */
.step-caption {
    flex: 2;
    font-size: calc(var(--font-size-base) * 1.2);
    background: var(--bg-color);
    padding: 1.5rem;
    border-radius: 30px;
    line-height: 1.6;
    min-width: 250px;
}

/* Изображение (справа) */
.step-image {
    flex: 1;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    min-width: 200px;
    cursor: pointer;
    transition: transform 0.2s;
}

.step-image:hover {
    transform: scale(1.02);
}

.step-image span {
    background: linear-gradient(145deg, #d9e2ef, #c0cbd8);
    padding: 2rem 3rem;
    border-radius: 60px;
    border: 4px dashed var(--border);
    display: inline-block;
    text-align: center;
    font-size: calc(var(--font-size-base) * 1.3);
    color: #1e3a5f;
}

.step-image img {
    max-width: 100%;
    max-height: 380px;
    border-radius: 30px;
    box-shadow: var(--shadow);
    border: 3px solid var(--border);
    object-fit: cover;
    cursor: pointer;
    transition: 0.2s;
}

.step-image img:hover {
    opacity: 0.95;
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
}

.step-caption strong {
    color: var(--accent);
}

/* ========== КНОПКИ ДЕЙСТВИЙ ========== */
.action-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin: 2rem 0;
    justify-content: center;
}

.primary-btn {
    background: var(--accent);
    color: white;
    font-weight: 700;
    border: none;
    border-radius: 60px;
    padding: 1.2rem 3rem;
    font-size: calc(var(--font-size-base) * 1.2);
    cursor: pointer;
    box-shadow: 0 6px 0 #7e2b1f;
    border: 2px solid white;
    min-width: 300px;
}

.primary-btn:active {
    transform: translateY(4px);
    box-shadow: 0 2px 0 #7e2b1f;
}

/* ========== ТРЕНАЖЁР ========== */
.simulator {
    background-color: #1a2b3c;
    border-radius: 50px;
    padding: 2rem;
    margin: 2rem 0;
    border: 8px solid #aaa;
}

.simulator.fixed-bottom {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 900px;
    z-index: 1500;
    margin: 0;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translate(-50%, 100%); opacity: 0; }
    to { transform: translate(-50%, 0); opacity: 1; }
}

.simulator-screen {
    background: #0e1a26;
    border-radius: 30px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.simulator-title {
    font-size: 2.5rem;
    color: #ffd966;
    font-weight: 700;
}

.feedback {
    background: #333;
    padding: 1.5rem;
    border-radius: 40px;
    font-size: calc(var(--font-size-base) * 1.1);
    color: #ffd966;
    text-align: center;
    width: 100%;
}

.sim-button {
    background: #4CAF50;
    border: none;
    color: white;
    font-size: calc(var(--font-size-base) * 1.5);
    padding: 1.5rem 3rem;
    border-radius: 100px;
    box-shadow: 0 10px 0 #2d6a2d;
    cursor: pointer;
    font-weight: 700;
    min-width: 320px;
}

.sim-button.small {
    font-size: calc(var(--font-size-base) * 1.2);
    padding: 1.2rem 2rem;
    background: #f4b836;
    box-shadow: 0 6px 0 #b87e1a;
    min-width: 260px;
}

.simulator-content-form {
    background: white;
    color: black;
    padding: 2rem;
    border-radius: 20px;
    width: 100%;
}

.simulator-content-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.simulator-content-form input,
.simulator-content-form select {
    width: 100%;
    padding: 1rem;
    font-size: 1.2rem;
    border-radius: 10px;
    border: 2px solid #ccc;
    margin-bottom: 1.5rem;
}

.certificate-result {
    background: #e8f5e9;
    padding: 2rem;
    border-radius: 20px;
    border: 3px solid #4caf50;
    margin-top: 1.5rem;
}

.certificate-result h4 {
    color: #2e7d32;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.certificate-result p {
    font-size: 1.3rem;
    margin: 0.8rem 0;
}

/* ========== НИЖНЯЯ НАВИГАЦИЯ ========== */
.bottom-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    gap: 1rem;
}

.nav-link {
    background: var(--card-bg);
    border: 3px solid var(--border);
    border-radius: 60px;
    padding: 1rem 2.5rem;
    font-weight: 700;
    color: var(--text-color);
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    font-size: 1.4rem;
}

.nav-link:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ========== ФУТЕР ========== */
footer {
    text-align: center;
    margin: 4rem 0 2rem;
    font-size: calc(var(--font-size-base) * 0.8);
    opacity: 0.8;
    padding: 2rem;
    border-top: 2px solid var(--border);
}

/* ========== АДАПТАЦИЯ ДЛЯ МОБИЛЬНЫХ ========== */
@media (max-width: 768px) {
    .container { padding: 0.5rem; }
    .top-bar { flex-direction: column; padding: 1.2rem; }
    .main-title { font-size: 2.5rem; }
    .modal-content { padding: 2rem; }
    .step-item {
        flex-direction: column;
    }
    .step-image {
        order: -1;
    }
}