:root {
    --primary-color: #7c3aed; /* Фиолетовый для темной темы */
    --accent-color: #c026d3; /* Яркий пурпурный акцент */
    --success-color: #10b981; /* Зеленый успех */
    --background-color: #0f0f0f; /* Темный фон */
    --card-bg: rgba(26, 26, 26, 0.8); /* Фон карточек с прозрачностью */
    --text-color: #f9fafb; /* Почти белый текст */
    --text-secondary: #a1a1aa; /* Серый текст */
    --border-color: #374151; /* Темная граница */
    --shadow-color: rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    background: var(--background-color);
    color: var(--text-color);
    min-height: 100vh;
    animation: fadeIn 1s ease-in;
    display: flex;
    flex-direction: column;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 0%, rgba(124, 58, 237, 0.4) 0%, rgba(15, 15, 15, 0) 50%);
    z-index: -1;
    pointer-events: none;
}

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

#content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    max-width: 100%;
    box-sizing: border-box;
    position: relative;
}

.section {
    display: none;
    width: 100%;
    max-width: 400px;
    padding: 20px;
    background: transparent; /* Секции теперь прозрачные */
    border-radius: 16px;
    margin: 0 auto;
    transition: all 0.3s ease;
    will-change: transform, opacity;
}

.section.active {
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.5s ease-out;
    align-items: center; /* Центрирование контента секции */
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-20px);
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

@keyframes slideUp {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

h1, h2 {
    color: var(--primary-color);
    margin: 0 0 20px 0;
    text-align: center;
    font-weight: 600;
}

p {
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: center;
}

.logo-container {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    font-size: 48px;
    font-weight: bold;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

/* Новый дизайн главного меню */
.home-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    animation: slideUp 0.8s ease-out 0.5s both;
}

.grid-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    color: var(--text-color);
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    aspect-ratio: 1 / 1;
    backdrop-filter: blur(10px);
}

.grid-item:hover {
    background: rgba(124, 58, 237, 0.2);
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.grid-item svg {
    width: 40px;
    height: 40px;
    color: var(--primary-color);
}

.grid-item span {
    font-size: 14px;
    font-weight: 500;
}

/* Новый дизайн секции подписки */
#subscription-plans {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    width: 100%;
    margin-bottom: 30px;
}

.plan-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 20px 15px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    backdrop-filter: blur(5px);
}

.plan-card:hover {
    transform: translateY(-5px);
    background: rgba(124, 58, 237, 0.1);
}

.plan-card.selected {
    border-color: var(--primary-color);
    background: rgba(124, 58, 237, 0.1);
    transform: translateY(-5px) scale(1.03);
    box-shadow: 0 0 25px rgba(124, 58, 237, 0.3);
}

.plan-card h4 {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-color);
}

.plan-card .price {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    color: var(--text-color);
}

.plan-card .price .currency {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
}

.plan-card .price-stars {
    margin: 5px 0 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.plan-card.popular {
    border-color: var(--primary-color);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.payment-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
}

.payment-options p {
    margin-bottom: 0;
}

.pay-btn {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 8px;
    padding: 12px 20px;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.pay-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.pay-btn:disabled {
    background: var(--border-color);
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.pay-btn:active {
    transform: scale(0.95);
}
/* --- Конец новых стилей --- */
/* Стили для секции установки */
.setup-btn {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 8px;
    padding: 12px 20px;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 5px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.setup-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.setup-btn:active {
    transform: scale(0.95);
}

.setup-btn:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
}

/* Стили для мастера установки */
.setup-progress {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 30px;
}

.progress-step {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background-color: var(--border-color);
    color: var(--text-secondary);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.progress-step.active {
    background-color: var(--primary-color);
    color: var(--text-color);
    transform: scale(1.1);
}

.progress-line {
    flex-grow: 1;
    height: 2px;
    background-color: var(--border-color);
    margin: 0 -1px;
}

#setup-wizard {
    position: relative;
    width: 100%;
    min-height: 200px; /* Чтобы избежать скачков высоты */
    overflow: hidden;
}

.wizard-step {
    position: absolute;
    width: 100%;
    text-align: center;
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
    pointer-events: none;
}

.wizard-step.active {
    opacity: 1;
    transform: translateX(0);
    position: relative; /* или static, чтобы контент занимал место */
    pointer-events: auto;
}

.selection-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

#os-detection {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.card-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 20px 10px;
    font-size: 16px;
    font-weight: 500;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;    
    backdrop-filter: blur(5px);
}

.card-btn:hover {
    background: rgba(124, 58, 237, 0.1);
    border-color: var(--text-secondary);
}

.card-btn.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

#current-step-content {
    margin-bottom: 20px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    animation: fadeInStep 0.5s ease-in;
}

@keyframes fadeInStep {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

#step-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 20px;
}

#step-counter {
    font-weight: bold;
    color: var(--primary-color);
}

/* Стили для секции профиля */
#user-info {
    text-align: center;
    margin-bottom: 20px;
}

#user-info h2 {
    margin-bottom: 10px;
}

#user-info p {
    margin: 0;
    color: var(--text-secondary);
}

#copy-user-id {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 5px 10px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.3s ease;
}

#copy-user-id:hover {
    background: rgba(255, 255, 255, 0.2);
}

#profile-menu {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
    width: 100%;
    border-radius: 12px;
    padding: 20px;
}

.menu-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    padding: 12px 20px;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(5px);
}

.menu-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.02);
}

/* Стили для выдвижного меню поддержки */
.support-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.support-drawer-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.support-drawer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 70%;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    border-radius: 24px 24px 0 0;
    box-shadow: 0 -8px 32px var(--shadow-color);
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    will-change: transform;
}

.drawer-handle-container {
    width: 100%;
    padding: 10px 0;
    display: flex;
    justify-content: center;
    cursor: grab;
}

.drawer-handle {
    width: 40px;
    height: 4px;
    background-color: var(--border-color);
    border-radius: 2px;
}

.support-drawer.open {
    transform: translateY(0);
}

.support-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px 10px;
    border-bottom: 1px solid var(--border-color);
}

.support-header h3 {
    margin: 0;
    color: var(--primary-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-color);
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.support-faq {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.support-faq details, #faq-container details {
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
}

.support-faq summary, #faq-container summary {
    padding: 15px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-color);
}

.support-faq summary:hover, #faq-container summary:hover {
    background: rgba(124, 58, 237, 0.1);
}

.support-faq p {
    padding: 0 15px 15px;
    margin: 0;
    color: var(--text-secondary);
}

.contact-support-btn {
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 8px;
    padding: 15px 20px;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    margin: 20px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.contact-support-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Toast notifications */
#toast-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.toast {
    padding: 12px 20px;
    border-radius: 25px;
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(20px);
    animation: toast-in 0.5s forwards;
    transition: opacity 0.5s, transform 0.5s;
    background-color: #333;
    backdrop-filter: blur(5px);
}

.toast.success {
    background-color: var(--success-color);
}

.toast.error {
    background-color: var(--accent-color);
}

.toast.info {
    background-color: var(--primary-color);
}

@keyframes toast-in {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Адаптивность */
@media (max-width: 480px) {
    .section {
        padding: 16px;
        border-radius: 12px;
        max-width: 95%;
    }

    .logo { font-size: 40px; }
    .home-grid { gap: 10px; }
    .grid-item svg { width: 32px; height: 32px; }
    .grid-item span { font-size: 12px; }

    .pay-btn, .setup-btn {
        padding: 12px 18px;
        font-size: 16px;
        min-height: 44px;
    }

    .setup-btn {
        padding: 12px 18px;
        font-size: 14px;
        min-height: 44px;
    }

    #profile-menu {
        padding: 16px;
    }

    .menu-btn {
        padding: 12px 18px;
        font-size: 14px;
        min-height: 44px;
    }

    .support-drawer {
        height: 80%;
    }

    .support-header {
        padding: 16px;
    }

    .support-faq {
        padding: 16px;
    }

    .contact-support-btn {
        margin: 16px;
        padding: 14px 18px;
        font-size: 14px;
        min-height: 44px;
    }

    #os-select {
        padding: 12px;
        font-size: 16px;
    }

    input, textarea {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* Tablet styles */
@media (min-width: 481px) and (max-width: 767px) {
    .section {
        max-width: 500px;
        padding: 24px;
    }
    .logo { font-size: 56px; }
    .home-grid { gap: 15px; }
    .grid-item svg { width: 38px; height: 38px; }
    .grid-item span { font-size: 14px; }

    .pay-btn, .setup-btn {
        padding: 14px 24px;
        font-size: 18px;
    }

    .pay-stars, .pay-yookassa, .setup-btn {
        padding: 14px 24px;
        font-size: 18px;
    }

    .menu-btn {
        padding: 14px 24px;
        font-size: 16px;
    }

    .support-drawer {
        height: 75%;
    }

    .support-header {
        padding: 20px;
    }

    .support-faq {
        padding: 20px;
    }

    .contact-support-btn {
        margin: 20px;
        padding: 16px 20px;
        font-size: 16px;
    }
}

/* Desktop styles */
@media (min-width: 768px) {
    .section {
        max-width: 600px;
        padding: 32px;
    }
    .logo { font-size: 64px; }
    .home-grid { gap: 20px; }
    .grid-item svg { width: 48px; height: 48px; }
    .grid-item span { font-size: 16px; }

    .pay-btn, .setup-btn {
        padding: 16px 28px;
        font-size: 20px;
    }

    .pay-stars, .pay-yookassa, .setup-btn {
        padding: 16px 28px;
        font-size: 20px;
    }

    .menu-btn {
        padding: 16px 28px;
        font-size: 18px;
    }

    .support-drawer {
        height: 60%;
        max-width: 500px;
        margin: 0 auto;
    }

    .support-header {
        padding: 24px;
    }

    .support-faq {
        padding: 24px;
    }

    .contact-support-btn {
        margin: 24px;
        padding: 18px 24px;
        font-size: 18px;
    }
}

/* Стили для FAQ аккордеона */
#faq-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
}

#faq-container details {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: background 0.3s ease;
}

#faq-container details:hover {
    background: rgba(255, 255, 255, 0.1);
}

#faq-container summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    cursor: pointer;
    font-weight: 500;
    list-style: none; /* Убрать стандартный маркер */
}

#faq-container summary::-webkit-details-marker {
    display: none; /* Убрать маркер в Safari */
}

#faq-container summary::after {
    content: '+';
    font-size: 24px;
    font-weight: 300;
    color: var(--primary-color);
    transition: transform 0.3s ease-in-out;
}

#faq-container details[open] > summary::after {
    transform: rotate(45deg);
}

#faq-container details p {
    padding: 0 20px 20px;
    text-align: left;
}