/* ==========================================================
   CallSpoof - Ultra-Modern VoIP & SIP Without KYC Stylesheet
   High-conversion UI, Google Core Web Vitals Optimized
   ========================================================== */

:root {
    --primary: #f97316;
    --primary-hover: #ea580c;
    --primary-light: #fff7ed;
    --primary-glow: rgba(249, 115, 22, 0.25);
    --dark: #0f172a;
    --dark-surface: #1e293b;
    --dark-muted: #334155;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-900: #0f172a;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.08);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    background-color: #ffffff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ==========================================================
   Header & Navbar
   ========================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    padding: 0.85rem 0;
    transition: var(--transition);
}

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

.logo-group {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 10px var(--primary-glow);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    list-style: none;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-600);
    padding: 0.35rem 0.15rem;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.65rem 1.35rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: #ffffff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(249, 115, 22, 0.35);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--gray-900);
    border: 1.5px solid var(--gray-300);
}

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

.btn-ghost {
    background: transparent;
    color: var(--gray-700);
}

.btn-ghost:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.btn-lg {
    padding: 0.85rem 2rem;
    font-size: 1.05rem;
    border-radius: var(--radius-md);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--gray-900);
    cursor: pointer;
    padding: 0.35rem;
}

/* ==========================================================
   Hero Section
   ========================================================== */
.hero-section {
    position: relative;
    background: linear-gradient(180deg, #fff 0%, var(--gray-50) 100%);
    padding: 5rem 0 4rem;
    overflow: hidden;
}

.hero-content {
    max-width: 820px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 10;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid rgba(249, 115, 22, 0.2);
    padding: 0.4rem 1rem;
    border-radius: 9999px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: 900;
    color: var(--gray-900);
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.text-gradient {
    color: var(--primary);
    background: linear-gradient(135deg, var(--primary) 0%, #d97706 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.25rem);
    color: var(--gray-600);
    line-height: 1.65;
    margin-bottom: 2.25rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.hero-trust-list {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-top: 1rem;
}

.hero-trust-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 500;
}

.hero-trust-item svg {
    color: #10b981;
}

.hero-side-img {
    position: absolute;
    bottom: 0;
    max-width: 320px;
    opacity: 0.9;
    pointer-events: none;
    z-index: 1;
}

.hero-side-img.left {
    left: 2%;
}

.hero-side-img.right {
    right: 2%;
}

/* ==========================================================
   Trust & Metrics Bar
   ========================================================== */
.stats-bar {
    background: var(--dark);
    color: #ffffff;
    padding: 2.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 0.35rem;
}

.stat-item p {
    font-size: 0.95rem;
    color: var(--gray-300);
}

/* ==========================================================
   Feature Cards & Grid
   ========================================================== */
.section {
    padding: 5rem 0;
}

.section-alt {
    background-color: var(--gray-50);
}

.section-dark {
    background-color: var(--dark);
    color: #ffffff;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 3.5rem;
}

.section-subtitle {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.section-title {
    font-size: clamp(1.85rem, 3.5vw, 2.65rem);
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 1rem;
}

.section-dark .section-title {
    color: #ffffff;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--gray-600);
}

.section-dark .section-desc {
    color: var(--gray-300);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
    gap: 2.5rem;
    align-items: center;
}

.card {
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 2rem;
    transition: var(--transition);
    position: relative;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(249, 115, 22, 0.4);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-size: 1.25rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 0.75rem;
}

.card-text {
    font-size: 0.95rem;
    color: var(--gray-600);
    line-height: 1.6;
}

/* ==========================================================
   SEO Content & Articles Box
   ========================================================== */
.seo-prose {
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}

.seo-prose h2 {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--gray-900);
    margin: 2rem 0 1rem;
}

.seo-prose h2:first-child {
    margin-top: 0;
}

.seo-prose h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 1.5rem 0 0.75rem;
}

.seo-prose p {
    font-size: 1.025rem;
    color: var(--gray-700);
    margin-bottom: 1.25rem;
    line-height: 1.75;
}

.seo-prose ul {
    margin: 1rem 0 1.5rem 1.5rem;
    color: var(--gray-700);
}

.seo-prose li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* ==========================================================
   FAQ Accordions
   ========================================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.faq-item {
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(249, 115, 22, 0.4);
}

.faq-question {
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    text-align: left;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--gray-900);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: inherit;
}

.faq-icon {
    font-size: 1.25rem;
    color: var(--primary);
    transition: transform 0.25s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding: 0 1.5rem;
    color: var(--gray-600);
    font-size: 0.975rem;
    line-height: 1.65;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 1.25rem;
}

/* ==========================================================
   Rates & Table UI
   ========================================================== */
.table-wrapper {
    overflow-x: auto;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.styled-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.95rem;
}

.styled-table thead th {
    background: var(--gray-100);
    color: var(--gray-900);
    padding: 0.95rem 1.25rem;
    font-weight: 700;
    border-bottom: 2px solid var(--gray-200);
}

.styled-table tbody tr {
    border-bottom: 1px solid var(--gray-200);
    transition: background-color 0.15s ease;
}

.styled-table tbody tr:hover {
    background-color: var(--primary-light);
}

.styled-table td {
    padding: 0.85rem 1.25rem;
    color: var(--gray-700);
}

.badge-status {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 700;
    background: #dcfce7;
    color: #15803d;
}

.search-bar {
    width: 100%;
    max-width: 480px;
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    outline: none;
    transition: var(--transition);
    font-family: inherit;
    margin-bottom: 1.5rem;
}

.search-bar:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

/* ==========================================================
   High-Conversion Floating / Sticky Callout
   ========================================================== */
.cta-banner {
    background: linear-gradient(135deg, var(--dark) 0%, #1e1b4b 100%);
    color: #ffffff;
    border-radius: var(--radius-lg);
    padding: 3.5rem 2.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    margin: 4rem 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.cta-banner h2 {
    font-size: clamp(1.85rem, 3.5vw, 2.75rem);
    font-weight: 800;
    margin-bottom: 1rem;
}

.cta-banner p {
    font-size: 1.15rem;
    color: var(--gray-300);
    max-width: 650px;
    margin: 0 auto 2rem;
}

/* ==========================================================
   Footer
   ========================================================== */
.site-footer {
    background: var(--dark);
    color: var(--gray-300);
    padding: 4.5rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3.5rem;
}

.footer-brand h3 {
    color: #ffffff;
    font-size: 1.35rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.footer-col h4 {
    color: #ffffff;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-link {
    color: var(--gray-300);
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--primary);
    transform: translateX(3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* ==========================================================
   Responsive Breakpoints
   ========================================================== */
@media (max-width: 1024px) {
    .hero-side-img {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        padding: 1.5rem;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-lg);
    }
    .nav-links.show {
        display: flex;
    }
    .mobile-toggle {
        display: block;
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .seo-prose {
        padding: 1.5rem;
    }
}