/* ========== БАЗОВЫЕ СТИЛИ ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8fafc;
}

/* ========== ЛЕНДИНГ ========== */

/* Навигация */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1a73e8;
}

.nav-buttons {
    display: flex;
    gap: 1rem;
}

/* Hero секция */
.hero {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: 80vh;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    background: linear-gradient(135deg, #1a73e8 0%, #667eea 50%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #64748b;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Иллюстрация с плавающими карточками */
.hero-illustration {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.floating-card {
    position: absolute;
    background: white;
    padding: 1.5rem 2rem;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    font-weight: 600;
    font-size: 1.1rem;
    animation: float 3s ease-in-out infinite;
}

.card-1 {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
}

.card-2 {
    top: 45%;
    right: 10%;
    animation-delay: 1s;
}

.card-3 {
    bottom: 10%;
    left: 30%;
    animation-delay: 2s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Фичи */
.features {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    background: white;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    border-color: #1a73e8;
    box-shadow: 0 10px 30px rgba(26, 115, 232, 0.1);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* Тарифы */
.pricing {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    transform: translateY(-5px);
}

.pricing-card.featured {
    border: 3px solid #1a73e8;
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #1a73e8;
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1a73e8;
    margin-bottom: 1.5rem;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    color: #64748b;
}

.price.free {
    color: #10b981;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    color: #475569;
}

/* Футер */
.footer {
    text-align: center;
    padding: 2rem;
    background: white;
    color: #64748b;
    margin-top: 4rem;
}

/* ========== КНОПКИ ========== */
button, .btn-primary, .btn-secondary, .btn-outline {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, #1a73e8 0%, #667eea 100%);
    color: white;
    border: none;
}

.btn-primary:hover {
    box-shadow: 0 5px 20px rgba(26, 115, 232, 0.4);
    transform: translateY(-2px);
}

.btn-secondary {
    background: white;
    color: #1a73e8;
    border: 2px solid #1a73e8;
}

.btn-secondary:hover {
    background: #f0f4ff;
}

.btn-outline {
    background: transparent;
    color: #1a73e8;
    border: 2px solid #1a73e8;
}

.btn-outline:hover {
    background: #f0f4ff;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    background: white;
    color: #1a73e8;
    border: 2px solid #1a73e8;
}

button:disabled, .btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

button[data-loading="true"] {
    position: relative;
    color: transparent;
}

button[data-loading="true"]::after {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    top: 50%;
    left: 50%;
    margin-left: -7px;
    margin-top: -7px;
    border: 2px solid white;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ========== МОДАЛЬНЫЕ ОКНА ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    max-width: 450px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideUp 0.3s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #64748b;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.modal-close:hover {
    background: #f1f5f9;
    color: #1e293b;
}

/* ========== ФОРМЫ ========== */
.form-box {
    padding: 1rem;
}

.form-box h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-align: center;
    color: #1e293b;
}

input {
    display: block;
    width: 100%;
    padding: 0.875rem 1rem;
    margin: 0.5rem 0 1rem;
    border-radius: 12px;
    border: 2px solid #e2e8f0;
    font-size: 1rem;
    transition: all 0.2s ease;
}

input:focus {
    outline: none;
    border-color: #1a73e8;
    box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.1);
}

.form-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: #64748b;
}

.form-footer a {
    color: #1a73e8;
    text-decoration: none;
    font-weight: 500;
}

.form-footer a:hover {
    text-decoration: underline;
}

/* ========== КОНТЕЙНЕР ПРИЛОЖЕНИЯ ========== */
.container {
    max-width: 1000px;
    margin: 2rem auto;
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

/* ========== HEADER ПРИЛОЖЕНИЯ ========== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header span {
    font-size: 1.1rem;
    font-weight: 500;
    color: #1e293b;
}

.header-buttons {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.balance-display {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.connect-code {
    display: block;
    background: #f1f5f9;
    padding: 1rem;
    border-radius: 12px;
    font-size: 1.25rem;
    text-align: center;
    margin: 1rem 0;
    border: 2px dashed #1a73e8;
    user-select: all;
}

.proxy-link {
    display: inline-block;
    margin-top: 0.75rem;
    color: #1a73e8;
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    transition: all 0.2s ease;
}

.proxy-link:hover {
    color: #0c5fce;
    text-decoration: underline;
}

.telegram-bot-link {
    display: block;
    background: linear-gradient(135deg, #0088cc 0%, #00a8e6 100%);
    color: white;
    text-align: center;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    margin: 1rem 0;
    transition: all 0.2s ease;
}

.telegram-bot-link:hover {
    box-shadow: 0 5px 20px rgba(0, 136, 204, 0.4);
    transform: translateY(-2px);
    text-decoration: none;
    color: white;
}

.hint {
    color: #64748b;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ========== СЕРВИСЫ ========== */
h1, h2, h3 {
    color: #1e293b;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.25rem;
    margin-top: 2rem;
}

.service, .wg-service {
    background: #f8fafc;
    border-left: 4px solid #1a73e8;
    padding: 1rem 1.25rem;
    margin: 1rem 0;
    border-radius: 12px;
    transition: all 0.2s ease;
}

.service:hover, .wg-service:hover {
    box-shadow: 0 4px 12px rgba(26, 115, 232, 0.1);
}

.days {
    font-weight: 700;
    color: #10b981;
}

.error {
    color: #dc2626;
    background: #fee2e2;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: block;
}

.error:not(:empty) {
    display: block;
}

hr {
    margin: 2rem 0;
    border: none;
    border-top: 2px solid #e2e8f0;
}

/* ========== КНОПКИ ВНУТРИ СЕРВИСОВ ========== */
button.small {
    background: #10b981;
    margin-top: 0.75rem;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

button.small:hover {
    background: #059669;
}

#logoutBtn {
    background: #ef4444;
    color: white;
    border: none;
}

#logoutBtn:hover {
    background: #dc2626;
}

/* ========== КОД ========== */
code {
    background: #f1f5f9;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

/* ========== СКРЫТИЕ ЭЛЕМЕНТОВ ========== */
.hidden {
    display: none !important;
}

/* ========== СТРАНИЦА ИНСТРУКЦИЙ ========== */
.instructions-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.page-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 3rem;
    color: #1e293b;
}

.instructions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 2rem;
}

.instruction-card {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.instruction-card:hover {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.12);
    transform: translateY(-5px);
}

.instruction-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e2e8f0;
}

.instruction-icon {
    font-size: 3rem;
}

.instruction-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

.instruction-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: #1a73e8;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.instruction-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #475569;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.instruction-content p {
    color: #475569;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.instruction-content ol {
    color: #475569;
    line-height: 2;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.instruction-content ul {
    list-style: none;
    padding: 0;
    margin-bottom: 1rem;
}

.instruction-content ul li {
    padding: 0.5rem 0;
    color: #475569;
}

.instruction-content a {
    color: #1a73e8;
    text-decoration: none;
    font-weight: 500;
}

.instruction-content a:hover {
    text-decoration: underline;
}

.instruction-content code {
    background: #f1f5f9;
    padding: 0.2rem 0.5rem;
    border-radius: 6px;
    font-size: 0.9rem;
    color: #1a73e8;
}

/* ========== МОДАЛЬНОЕ ОКНО ИНСТРУКЦИЙ ========== */
.modal-large {
    max-width: 800px;
    width: 95%;
}

.instructions-container h2 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.5rem;
    text-align: center;
}

.instructions-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 0;
}

.tab-btn {
    flex: 1;
    padding: 0.875rem 1rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: #64748b;
    transition: all 0.2s ease;
    border-radius: 0;
}

.tab-btn:hover {
    color: #1a73e8;
    background: #f8fafc;
    transform: none;
}

.tab-btn.active {
    color: #1a73e8;
    border-bottom-color: #1a73e8;
    background: transparent;
}

.instruction-tab {
    display: none;
}

.instruction-tab.active {
    display: block;
}

.instruction-tab h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 1.5rem;
}

.instruction-tab h4 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #475569;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.instruction-steps {
    margin: 1.5rem 0;
}

.step {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: flex-start;
}

.step-number {
    background: linear-gradient(135deg, #1a73e8 0%, #667eea 100%);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.step-text {
    color: #475569;
    line-height: 1.6;
    padding-top: 0.3rem;
}

.instruction-list {
    list-style: none;
    padding: 0;
    margin: 1rem 0;
}

.instruction-list li {
    padding: 0.5rem 0 0.5rem 1.5rem;
    color: #475569;
    position: relative;
}

.instruction-list li:before {
    content: '•';
    color: #1a73e8;
    font-weight: bold;
    position: absolute;
    left: 0;
}

.instruction-note {
    background: #f8fafc;
    border-left: 4px solid #1a73e8;
    padding: 1.25rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.instruction-note strong {
    color: #1e293b;
    display: block;
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

.instruction-note ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.instruction-note ul li {
    padding: 0.4rem 0;
    color: #475569;
}

/* ========== АДАПТИВНОСТЬ ========== */

/* Планшет */
@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2rem 1.5rem;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-illustration {
        display: none;
    }

    .nav-container {
        padding: 1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .pricing-cards {
        grid-template-columns: 1fr;
    }
}

/* Мобильный */
@media (max-width: 480px) {
    body {
        font-size: 14px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .nav-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }

    .nav-buttons button {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .container {
        padding: 1rem;
        margin: 1rem;
    }

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

    .header-buttons {
        width: 100%;
    }

    .header-buttons button {
        flex: 1;
    }

    .modal-content {
        padding: 1.5rem;
        margin: 1rem;
    }

    button, .btn-primary {
        width: 100%;
    }

    .btn-small {
        width: auto;
    }
}