/* style.css */
:root {
    /* Цветовая палитра */
    --bg-main: #0b0d11;
    --bg-alt: #12151c;
    --bg-card: #181b24;
    --bg-card-hover: #1e222d;
    
    --accent-cyan: #00d2ff;
    --accent-cyan-hover: #00b8e6;
    --accent-gold: #d4af37;
    --accent-graphite: #2d3139;
    --accent-tg: #2AABEE;
    --accent-tg-hover: #229ED9;
    --accent-wa: #25D366;
    --accent-wa-hover: #20bd5a;
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(0, 210, 255, 0.3);
    
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-cyan: 0 4px 20px rgba(0, 210, 255, 0.15);
    
    /* Типографика */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --transition: 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 16px;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

p {
    color: var(--text-muted);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

/* Sections */
section {
    scroll-margin-top: 120px;
}

.section {
    padding: 100px 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header p {
    font-size: 1.125rem;
}

/* Grids */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.grid-5 {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
}
.grid-5 > .card {
    flex: 1 1 calc(33.333% - 24px);
    min-width: 280px;
    max-width: 380px;
}

/* Cards */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
    box-shadow: var(--shadow-card);
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--border-hover);
    background-color: var(--bg-card-hover);
}

/* About Block */
.about-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0, 210, 255, 0.03) 100%);
    border-left: 4px solid var(--accent-cyan);
    padding: 48px;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 16px;
    font-weight: 500;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-icon {
    margin-right: 8px;
}

.btn-primary {
    background-color: var(--accent-cyan);
    color: var(--bg-main);
    box-shadow: var(--shadow-cyan);
}

.btn-primary:hover {
    background-color: var(--accent-cyan-hover);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.btn-outline:disabled, .btn.max-btn {
    color: var(--text-muted);
    border-color: var(--border);
    cursor: not-allowed;
}

.btn-header {
    padding: 10px 24px;
    font-size: 0.875rem;
    border-color: rgba(212, 175, 55, 0.5); 
}

.btn-header:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.btn-whatsapp {
    background-color: var(--accent-wa);
    color: #fff;
}

.btn-whatsapp:hover {
    background-color: var(--accent-wa-hover);
    transform: translateY(-2px);
}

.btn-telegram {
    background-color: var(--accent-tg);
    color: #fff;
}

.btn-telegram:hover {
    background-color: var(--accent-tg-hover);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* Badge */
.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(0, 210, 255, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 210, 255, 0.2);
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 24px;
}

.badge-center {
    display: flex;
    width: max-content;
    margin: 0 auto 24px;
}

/* Header & SDT Logo */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(11, 13, 17, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-logo-wrapper {
    display: flex;
    align-items: center;
    gap: 16px;
}

.sdt-monogram {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--bg-card), var(--bg-alt));
    border: 1px solid var(--accent-cyan);
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent-gold);
    letter-spacing: 1px;
    box-shadow: 0 0 10px rgba(0, 210, 255, 0.15);
}

.header-logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-main);
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Hero */
.hero {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    left: -200px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 210, 255, 0.1) 0%, rgba(11, 13, 17, 0) 70%);
    z-index: -1;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 60px;
    align-items: center;
}

.subtitle {
    font-size: 1.25rem;
    margin-bottom: 16px;
    max-width: 95%;
}

.hero-regions-text {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 90%;
}

.hero-meta {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
    align-items: center;
}

.hero-meta span {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent-gold);
}

.hero-meta .term {
    color: var(--text-main);
}

.hero-pilot-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-main);
    background-color: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    padding: 6px 16px;
    border-radius: 100px;
    margin-bottom: 32px;
}

.pilot-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-gold);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.8);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 16px;
}

.hero-contacts-row {
    display: flex;
    gap: 24px;
    align-items: center;
    font-size: 0.875rem;
    margin-bottom: 24px;
}

.contact-inline {
    display: flex;
    align-items: center;
    color: var(--text-muted);
    transition: var(--transition);
    gap: 6px;
}

.contact-inline:hover {
    color: var(--accent-cyan);
}

.max-link-inline {
    cursor: not-allowed;
    opacity: 0.7;
}
.max-link-inline:hover {
    color: var(--text-muted);
}

.hero-footer-text {
    font-size: 0.875rem;
    border-left: 2px solid var(--accent-cyan);
    padding-left: 16px;
}

.hero-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mini-card {
    padding: 24px;
}

/* Architecture */
.arch-num {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-graphite);
    margin-bottom: 16px;
    font-family: monospace;
}

.architecture-card:hover .arch-num {
    color: var(--accent-cyan);
}

/* Tariffs */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-featured {
    border-color: var(--accent-gold);
    transform: scale(1.05);
    background-color: var(--bg-card-hover);
}

.pricing-featured:hover {
    transform: scale(1.05) translateY(-5px);
    border-color: var(--accent-cyan);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent-gold);
    color: #000;
    padding: 4px 16px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.pricing-header {
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 24px;
}

.pricing-price {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 16px 0;
}

.pricing-list {
    list-style: none;
    margin-bottom: 32px;
    flex-grow: 1;
}

.pricing-list li {
    padding: 12px 0;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.03);
    position: relative;
    padding-left: 24px;
}

.pricing-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-cyan);
    font-weight: bold;
}

/* Process */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.process-step {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 32px;
}

.step-number {
    width: 48px;
    height: 48px;
    background-color: rgba(0, 210, 255, 0.1);
    color: var(--accent-cyan);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 600;
    flex-shrink: 0;
}

/* Pilot Block */
.pilot-section {
    padding: 60px 0;
}

.pilot-card {
    text-align: center;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--accent-graphite) 100%);
    border: 1px solid rgba(212, 175, 55, 0.3);
}

.pilot-text {
    font-size: 1.125rem;
    max-width: 800px;
    margin: 0 auto 32px;
    color: var(--text-main);
}

.pilot-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    list-style: none;
    margin-bottom: 40px;
}

.pilot-list li {
    color: var(--accent-gold);
    position: relative;
    padding-left: 20px;
}
.pilot-list li::before {
    content: '•';
    position: absolute;
    left: 0;
}

/* FAQ Accordion */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 24px 0;
    background: none;
    border: none;
    color: var(--text-main);
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--accent-cyan);
    transition: var(--transition);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer p {
    padding-bottom: 24px;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

/* Form */
.form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding: 48px;
    background: linear-gradient(to right, var(--bg-card), var(--bg-alt));
}

.form-info h2 {
    margin-bottom: 24px;
}

.form-microtext {
    font-size: 0.875rem;
    color: var(--accent-cyan);
    margin-top: 16px;
    padding: 12px;
    background-color: rgba(0, 210, 255, 0.05);
    border-left: 2px solid var(--accent-cyan);
    border-radius: 4px;
}

.direct-contact-block {
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.direct-contact-title {
    margin-bottom: 16px;
    font-weight: 500;
    color: var(--text-main);
}

.direct-contact-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-main);
    font-size: 0.875rem;
    font-weight: 500;
}

label .optional {
    color: var(--text-muted);
    font-weight: 400;
    opacity: 0.7;
}

input, select, textarea {
    width: 100%;
    padding: 16px;
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 1px var(--accent-cyan);
}

input::placeholder, textarea::placeholder {
    color: rgba(156, 163, 175, 0.5);
}

/* Select */
select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%239ca3af%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 16px top 50%;
    background-size: 12px auto;
}
select option {
    background-color: var(--bg-card);
    color: var(--text-main);
}

.error-msg {
    color: #ef4444;
    font-size: 0.75rem;
    margin-top: 4px;
    display: none;
}

.has-error input {
    border-color: #ef4444;
}

.has-error .error-msg {
    display: block;
}

/* Success Messages */
.success-msg {
    margin-top: 24px;
    padding: 32px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-align: center;
}

.success-text {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 24px;
}

.success-actions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

/* Footer */
.footer {
    padding: 60px 0;
    border-top: 1px solid var(--border);
    background-color: var(--bg-main);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-copyright {
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 8px;
}

.footer-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-contacts-list {
    text-align: right;
}

.footer-contacts-list p {
    margin-bottom: 12px;
    color: var(--text-main);
    font-weight: 500;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.875rem;
}

.footer-links a, .footer-links span {
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--accent-cyan);
}

/* Floating Contact Dock */
.floating-dock {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 16px;
}

.floating-menu {
    display: flex;
    flex-direction: column;
    gap: 12px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.floating-dock.open .floating-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.floating-item {
    padding: 12px 20px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0,0,0,0.4);
    font-size: 0.95rem;
    border: none;
    color: #fff;
    text-decoration: none;
}

.floating-item.wa {
    background-color: var(--accent-wa);
}
.floating-item.wa:hover {
    background-color: var(--accent-wa-hover);
}
.floating-item.wa svg {
    color: #fff;
}

.floating-item.tg {
    background-color: var(--accent-tg);
}
.floating-item.tg:hover {
    background-color: var(--accent-tg-hover);
}
.floating-item.tg svg {
    color: #fff;
}

.floating-item.max {
    background-color: var(--bg-card);
    color: var(--text-muted);
    border: 1px solid var(--border);
    cursor: not-allowed;
}

.floating-toggle {
    background-color: var(--bg-card);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 16px 24px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.floating-toggle:hover, .floating-dock.open .floating-toggle {
    background-color: var(--bg-card-hover);
    border-color: var(--accent-cyan);
    transform: scale(1.05);
}

/* Mobile Adaptation */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .pricing-featured { transform: none; }
    .pricing-featured:hover { transform: translateY(-5px); }
    
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .form-wrapper { grid-template-columns: 1fr; padding: 32px; }
}

@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.875rem; }
    
    .section { 
        padding: 60px 0; 
    }
    
    .grid-3, .grid-4 { grid-template-columns: 1fr; }
    
    .hero-actions { flex-direction: column; }
    .hero-meta { flex-direction: column; gap: 8px; align-items: flex-start; }
    .hero-contacts-row { justify-content: flex-start; flex-wrap: wrap; }
    
    .header .btn-header { display: none; }
    .header-logo-text .logo-subtitle { display: none; }
    
    .process-step { flex-direction: column; align-items: flex-start; gap: 16px; }
    
    .footer-container { flex-direction: column; gap: 32px; text-align: left; }
    .footer-contacts-list { text-align: left; }
    
    .floating-dock { bottom: 16px; right: 16px; }
    .floating-toggle { padding: 14px 20px; font-size: 0.875rem; }
    
    .form-wrapper { padding: 24px; }
    .about-card { padding: 32px 24px; }
    
    /* Отступ для контента, чтобы док не перекрывал футер и форму */
    body { padding-bottom: 90px; }
}