/* ============================================================
   Счет На Оплату — Warm Modern SaaS
   Palette: cream bg, teal primary, orange CTA, deep text
   Fonts: Plus Jakarta Sans (headings/body) + Literata (blog)
   ============================================================ */

:root {
    --bg:             #faf8f5;
    --bg-alt:         #f2eeea;
    --surface:        #ffffff;
    --primary:        #0d9488;
    --primary-hover:  #0f766e;
    --primary-light:  #ccfbf1;
    --primary-subtle: rgba(13, 148, 136, 0.08);
    --accent:         #f97316;
    --accent-hover:   #ea580c;
    --accent-light:   #fff7ed;
    --text-primary:   #0f172a;
    --text-secondary: #475569;
    --text-muted:     #94a3b8;
    --card-bg:        #ffffff;
    --card-border:    rgba(0, 0, 0, 0.06);
    --shadow-sm:      0 1px 2px rgba(0,0,0,0.04);
    --shadow:         0 1px 3px rgba(0,0,0,0.06), 0 8px 24px rgba(0,0,0,0.04);
    --shadow-lg:      0 4px 12px rgba(0,0,0,0.06), 0 20px 48px rgba(0,0,0,0.06);
    --radius:         14px;
    --radius-lg:      20px;
    --grid-gap:       24px;

    /* legacy aliases (keep other templates working) */
    --bg-dark:          var(--bg);
    --glass:            var(--card-bg);
    --glass-light:      var(--primary-subtle);
    --primary-accent:   var(--accent);
    --secondary:        var(--primary);
}

/* ---- Reset & Base ---- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.7;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

img { max-width: 100%; display: block; }

/* ---- Layout ---- */
.container {
    width: min(1120px, 92vw);
    margin: 0 auto;
}

/* ---- Header ---- */
header {
    position: sticky;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    background: rgba(250, 248, 245, 0.88);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}

.logo {
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

nav ul {
    display: flex;
    gap: 28px;
    list-style: none;
}

nav a {
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s;
}

nav a:hover { color: var(--primary); }

.nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 9px 18px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 0.875rem;
    text-decoration: none;
    transition: background 0.2s, transform 0.15s;
    white-space: nowrap;
}

.nav-cta:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

/* ---- Hero ---- */
.hero {
    position: relative;
    padding: 100px 0 80px;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -40%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(13, 148, 136, 0.1) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.hero::after {
    content: "";
    position: absolute;
    bottom: -30%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(249, 115, 22, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.hero-grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

.hero-copy { max-width: 560px; }

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

h1 {
    font-size: clamp(2.25rem, 3.5vw + 0.5rem, 3.5rem);
    font-weight: 800;
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.hero-copy p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 28px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
}

/* ---- Buttons ---- */
.primary-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}

.primary-btn {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 16px rgba(249, 115, 22, 0.25);
}

.primary-btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(249, 115, 22, 0.3);
}

.secondary-btn {
    background: var(--surface);
    color: var(--text-primary);
    border: 1.5px solid rgba(0, 0, 0, 0.1);
}

.secondary-btn:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: var(--shadow);
}

.microcopy {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 14px;
}

/* ---- Hero Visual Card ---- */
.hero-visual {
    position: relative;
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    box-shadow: var(--shadow-lg);
}

.hero-visual::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, rgba(13, 148, 136, 0.04) 0%, rgba(249, 115, 22, 0.03) 100%);
    pointer-events: none;
}

.hero-visual h2 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.hero-visual .chip,
.chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--primary-light);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 8px;
    margin-bottom: 10px;
}

.hero-visual ul {
    list-style: none;
    display: grid;
    gap: 10px;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ---- Stats ---- */
.stats { margin-top: 56px; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--grid-gap);
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 28px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.stat-card:hover { transform: translateY(-3px); }

.stat-card h3 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.stat-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ---- Sections ---- */
section {
    padding: 88px 0;
    position: relative;
}

section::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0;
    pointer-events: none;
}

.section-heading {
    max-width: 640px;
    margin-bottom: 48px;
}

h2 {
    font-size: clamp(1.75rem, 2vw + 0.5rem, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    margin-bottom: 14px;
    color: var(--text-primary);
}

p.section-lead {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.65;
}

/* ---- Grid ---- */
.grid { display: grid; gap: var(--grid-gap); }
.grid-three { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-two   { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }

/* ---- Card ---- */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.card p { color: var(--text-secondary); line-height: 1.65; }

/* ---- Feature Icons ---- */
.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
    border-radius: 12px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 1.35rem;
}

/* ---- How Steps ---- */
.how-step {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.how-step-number {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--accent-light);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.1rem;
}

/* ---- Guide ---- */
.guide-content p,
.guide-content li {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.guide-content ol { padding-left: 24px; }

/* ---- Stories ---- */
.story { display: grid; gap: 12px; }
.story strong { font-size: 1.05rem; color: var(--text-primary); }
.story p { color: var(--text-secondary); font-style: italic; }

/* ---- FAQ ---- */
.faq-list { display: grid; gap: 16px; }

.faq-item {
    border-radius: var(--radius);
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s;
}

.faq-item:hover { box-shadow: var(--shadow); }

.faq-item h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.faq-item p { color: var(--text-secondary); }

/* ---- Pricing ---- */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--grid-gap);
    margin-top: 32px;
}

.price-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
    transition: transform 0.2s;
}

.price-card:hover { transform: translateY(-3px); }

.price-card h3 {
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--text-primary);
}

.price-card ul {
    margin-top: 16px;
    color: var(--text-secondary);
    list-style: none;
    display: grid;
    gap: 10px;
}

.price-card li::before {
    content: "\2713\0020";
    color: var(--primary);
    font-weight: 700;
}

/* ---- Final CTA ---- */
.final-cta {
    text-align: center;
    background: linear-gradient(135deg, var(--primary-subtle), rgba(249, 115, 22, 0.04));
    border-radius: var(--radius-lg);
    margin: 0 auto;
    padding: 72px 32px;
}

.final-cta h2 { color: var(--text-primary); }
.final-cta p  { color: var(--text-secondary); margin-bottom: 24px; }

/* ---- Footer ---- */
footer {
    padding: 56px 0 32px;
    background: var(--text-primary);
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0;
}

footer strong { color: #fff; font-weight: 700; }

footer .footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
    margin-bottom: 40px;
}

footer a {
    text-decoration: none;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.2s;
}

footer a:hover { color: #fff; }

.legal {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.35);
}

/* ---- Comparison Table ---- */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

table th {
    background: var(--primary-subtle);
    font-weight: 700;
    color: var(--text-primary);
}

table td, table th {
    padding: 16px;
    border-bottom: 1px solid var(--card-border);
    font-size: 0.95rem;
}

table tr:last-child td { border-bottom: none; }

/* ---- Blog Index ---- */
.blog-hero {
    text-align: center;
    padding: 72px 0 48px;
}

.blog-hero h1 {
    font-size: clamp(2rem, 3vw, 3rem);
    margin-bottom: 12px;
}

.blog-hero p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    max-width: 500px;
    margin: 0 auto;
}

.blog-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 0;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.25s;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.blog-card-body {
    padding: 28px 28px 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-card-category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--primary);
    background: var(--primary-light);
    padding: 4px 10px;
    border-radius: 6px;
    margin-bottom: 14px;
    align-self: flex-start;
}

.blog-card h2 {
    font-size: 1.3rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.blog-card h2 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s;
}

.blog-card h2 a:hover { color: var(--primary); }

.blog-card-excerpt {
    color: var(--text-secondary);
    font-size: 0.925rem;
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 20px;
}

.blog-card-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--card-border);
    font-size: 0.85rem;
}

.blog-card-meta time { color: var(--text-muted); }

.blog-card-meta a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.blog-card-meta a:hover { color: var(--primary-hover); }

/* Featured blog card */
.blog-card-featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.blog-card-featured .blog-card-accent {
    background: linear-gradient(135deg, var(--primary-subtle), rgba(249, 115, 22, 0.04));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
    min-height: 240px;
}

.blog-card-featured .blog-card-accent-text {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.2;
    letter-spacing: -0.03em;
}

.blog-card-featured .blog-card-body { padding: 36px; }
.blog-card-featured h2 { font-size: 1.6rem; }

/* ---- Blog Post Article ---- */
.blog-content {
    max-width: 720px;
    margin: 0 auto;
    font-family: 'Literata', 'Georgia', serif;
    line-height: 1.85;
    font-size: 1.05rem;
}

article header h1 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    color: var(--text-primary);
}

article header { margin-bottom: 48px; }

.blog-content h2 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    margin-top: 52px;
    margin-bottom: 20px;
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.blog-content h3 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    margin-top: 36px;
    margin-bottom: 14px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.blog-content p {
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.blog-content ul, .blog-content ol {
    margin-bottom: 20px;
    padding-left: 28px;
}

.blog-content li {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.blog-content strong { color: var(--text-primary); font-weight: 700; }

.blog-content a {
    color: var(--primary);
    text-decoration: underline;
    text-decoration-color: rgba(13, 148, 136, 0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.2s;
}

.blog-content a:hover { text-decoration-color: var(--primary); }

.blog-content .highlight-box {
    background: var(--primary-subtle);
    border-left: 3px solid var(--primary);
    padding: 24px;
    margin: 28px 0;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-size: 0.95rem;
}

.blog-content .cta-box {
    background: linear-gradient(135deg, var(--primary-subtle), var(--accent-light));
    padding: 36px;
    border-radius: var(--radius-lg);
    text-align: center;
    margin: 48px 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

.blog-content .cta-box h3 { font-family: 'Plus Jakarta Sans', sans-serif; }

/* ---- Tool Page Styles ---- */
.tool-container {
    max-width: 680px;
    margin: 0 auto;
    padding: 40px 0;
}

.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow);
}

.tool-input-group {
    margin-bottom: 20px;
}

.tool-input-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.tool-input-group input[type="text"],
.tool-input-group input[type="number"] {
    width: 100%;
    padding: 14px 16px;
    border: 1.5px solid var(--card-border);
    border-radius: 10px;
    font-size: 1.1rem;
    font-family: inherit;
    background: var(--bg);
    color: var(--text-primary);
    transition: border-color 0.2s;
}

.tool-input-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.1);
}

.info-section {
    margin-top: 48px;
}

.info-section h2 {
    font-size: 1.5rem;
    margin-bottom: 16px;
}

/* ---- Mobile Menu ---- */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text-primary);
}

.mobile-menu-toggle svg { display: block; }

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    background: rgba(250, 248, 245, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 24px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.mobile-nav.open { display: flex; }

.mobile-nav-close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-primary);
    padding: 8px;
    line-height: 1;
}

.mobile-nav a {
    display: block;
    padding: 14px 24px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 12px;
    transition: background 0.2s;
    text-align: center;
    min-width: 200px;
}

.mobile-nav a:hover { background: var(--primary-subtle); color: var(--primary); }

.mobile-nav .primary-btn {
    margin-top: 16px;
    width: 200px;
}

/* ---- Table Scroll on Mobile ---- */
.table-scroll {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    nav ul { display: none; }
    .mobile-menu-toggle { display: block; }
    .header-inner { padding: 10px 0; }
    .logo { font-size: 1rem; }
    .nav-cta { padding: 10px 16px; font-size: 0.8125rem; min-height: 44px; }
    .hero { padding-top: 72px; }
    .hero-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero-actions { width: 100%; }
    .primary-btn, .secondary-btn { width: 100%; min-height: 48px; }
    .blog-card-featured { grid-template-columns: 1fr; }
    .blog-card-featured .blog-card-accent { min-height: 120px; padding: 24px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
    section { padding: 56px 0; }
    .header-inner { padding: 8px 0; }
    .logo { font-size: 0.9375rem; }
    .nav-cta { padding: 10px 14px; font-size: 0.8125rem; min-height: 44px; }
    .hero { padding-top: 56px; }
    .footer-grid { grid-template-columns: 1fr; }

    .blog-content { padding: 0 8px; font-size: 1rem; }
    article header h1 { font-size: 1.5rem !important; }
    article header { margin-bottom: 32px !important; }

    .blog-content h2 { font-size: 1.3rem; margin-top: 36px; }
    .blog-content h3 { font-size: 1.1rem; margin-top: 28px; }

    .grid-two { grid-template-columns: 1fr; }
    .grid-three { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .pricing-grid { grid-template-columns: 1fr; }
    table td, table th { padding: 10px 8px !important; font-size: 0.85rem; }

    .final-cta { padding: 48px 20px; }
}

@media (max-width: 480px) {
    article header h1 { font-size: 1.3rem !important; line-height: 1.25; }
    article header { margin-bottom: 24px !important; }
    .stats-grid { grid-template-columns: 1fr; }
}