/* ==========================================================
   TalkTK - WorldFirst Inspired Clean Corporate Design
   Colors: White BG | #E5004F accent | #111827 dark text
   ========================================================== */

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

:root {
    --accent: #E5004F;
    --accent-dark: #b8003f;
    --accent-light: #ffeef4;
    --dark: #111827;
    --gray-800: #1f2937;
    --gray-600: #4b5563;
    --gray-400: #9ca3af;
    --gray-200: #e5e7eb;
    --gray-100: #f3f4f6;
    --gray-50: #f9fafb;
    --white: #ffffff;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --shadow-accent: 0 8px 30px rgba(229,0,79,0.25);
}

html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--white);
    color: var(--dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

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

/* ========================
   BUTTONS
======================== */
.btn-primary {
    display: inline-block;
    background: var(--accent);
    color: var(--white) !important;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 15px;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-accent);
    border: 2px solid transparent;
}
.btn-primary:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(229,0,79,0.35);
}
.btn-primary.btn-large { padding: 16px 36px; font-size: 16px; }

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--dark) !important;
    padding: 11px 26px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    border: 2px solid var(--gray-200);
    transition: all 0.2s ease;
}
.btn-outline:hover { border-color: var(--dark); background: var(--gray-50); }

.btn-ghost {
    display: inline-block;
    background: transparent;
    color: var(--dark) !important;
    padding: 16px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    border: 2px solid var(--gray-200);
    transition: all 0.2s ease;
}
.btn-ghost:hover { border-color: var(--gray-400); background: var(--gray-50); }

.btn-white {
    display: inline-block;
    background: var(--white);
    color: var(--accent) !important;
    padding: 16px 36px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 16px;
    border: 2px solid var(--white);
    transition: all 0.2s ease;
}
.btn-white:hover { background: var(--accent-light); }

/* ========================
   TOP BAR
======================== */
.topbar {
    background: var(--dark);
    color: var(--gray-400);
    text-align: center;
    padding: 10px 24px;
    font-size: 13px;
    font-weight: 500;
}
.topbar a { color: var(--accent); font-weight: 600; }
.topbar a:hover { text-decoration: underline; }

/* ========================
   NAVBAR
======================== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    transition: box-shadow 0.2s;
}
.navbar.scrolled { box-shadow: var(--shadow); }

.nav-inner {
    display: flex;
    align-items: center;
    height: 72px;
    gap: 40px;
}

.logo { display: flex; align-items: center; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}
.nav-links a {
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
    font-size: 15px;
    color: var(--gray-600);
    transition: all 0.15s;
}
.nav-links a:hover, .nav-links a.active {
    color: var(--dark);
    background: var(--gray-100);
}
.nav-links a.active { font-weight: 600; }

.nav-cta { display: flex; align-items: center; gap: 10px; }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    margin-left: auto;
}
.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--dark);
    border-radius: 2px;
    transition: all 0.2s;
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: 16px 24px 24px;
    border-top: 1px solid var(--gray-200);
    gap: 4px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 500;
    color: var(--gray-600);
    font-size: 16px;
}
.mobile-menu a:hover { background: var(--gray-100); color: var(--dark); }

/* ========================
   HERO
======================== */
.hero {
    position: relative;
    overflow: hidden;
    padding: 80px 0 100px;
    background: linear-gradient(150deg, #fff 0%, #fef2f7 50%, #fff 100%);
}

.hero-gradient-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
}
.blob-1 {
    width: 500px; height: 500px;
    background: rgba(229,0,79,0.08);
    top: -100px; right: -100px;
}
.blob-2 {
    width: 300px; height: 300px;
    background: rgba(229,0,79,0.05);
    bottom: 0; left: 10%;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
    border: 1px solid rgba(229,0,79,0.2);
}

.hero-content h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.1;
    color: var(--dark);
    margin-bottom: 20px;
    letter-spacing: -2px;
}

.hero-content h1 .highlight { color: var(--accent); }

.hero-desc {
    font-size: 18px;
    color: var(--gray-600);
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }

.platform-logos {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.platform-logos span {
    font-size: 13px;
    color: var(--gray-400);
    font-weight: 500;
}
.platform-logos img {
    height: 28px;
    width: auto;
    object-fit: contain;
    filter: grayscale(0.3);
    opacity: 0.85;
}
.platform-logos img:hover { filter: none; opacity: 1; }

/* Hero visual/card */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 360px;
}

.card-float {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 24px;
    border: 1px solid var(--gray-200);
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.card-main { width: 260px; }

.card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}
.card-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
}
.card-dot.green { background: #22c55e; box-shadow: 0 0 6px rgba(34,197,94,0.6); }
.card-label { font-size: 12px; color: var(--gray-400); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }

.card-amount {
    font-size: 28px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 8px;
}

.card-status.success {
    font-size: 13px;
    color: #16a34a;
    font-weight: 600;
    background: #dcfce7;
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    margin-bottom: 16px;
}

.card-divider {
    height: 1px;
    background: var(--gray-200);
    margin-bottom: 16px;
}

.card-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    margin-bottom: 10px;
    color: var(--gray-600);
}
.card-row span:last-child { font-weight: 600; color: var(--dark); }
.badge-green {
    background: #dcfce7;
    color: #16a34a;
    padding: 2px 10px;
    border-radius: 50px;
    font-size: 12px;
}

.card-mini {
    position: absolute;
    padding: 16px 20px;
    border-radius: var(--radius);
    text-align: center;
    animation-delay: 1.5s;
}
.card-mini-1 { top: 20px; left: -10px; }
.card-mini-2 { bottom: 30px; right: -10px; animation-delay: 0.8s; }

/* ========================
   STATS BAR
======================== */
.stats-bar {
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
    padding: 40px 0;
}

.stats-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.stat-item {
    text-align: center;
    padding: 0 60px;
    flex: 1;
}
.stat-number {
    font-size: 36px;
    font-weight: 900;
    color: var(--accent);
    letter-spacing: -1px;
    line-height: 1;
    margin-bottom: 6px;
}
.stat-label {
    font-size: 13px;
    color: var(--gray-600);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--gray-200);
}

/* ========================
   TRUSTED BY
======================== */
.trusted-by {
    padding: 60px 0;
    overflow: hidden;
}
.trusted-label {
    text-align: center;
    font-size: 13px;
    color: var(--gray-400);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 32px;
}

.logos-track { overflow: hidden; position: relative; }
.logos-track::before, .logos-track::after {
    content: '';
    position: absolute;
    top: 0; bottom: 0;
    width: 80px;
    z-index: 2;
    pointer-events: none;
}
.logos-track::before { left: 0; background: linear-gradient(to right, white, transparent); }
.logos-track::after { right: 0; background: linear-gradient(to left, white, transparent); }

.logos-inner {
    display: flex;
    gap: 60px;
    align-items: center;
    animation: scrollLogos 25s linear infinite;
    width: max-content;
}
.logos-inner img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: grayscale(1);
    opacity: 0.5;
    transition: all 0.3s;
}
.logos-inner img:hover { filter: none; opacity: 1; }

@keyframes scrollLogos {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========================
   SECTION HEADER
======================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-tag {
    display: inline-block;
    color: var(--accent);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 16px;
}
.section-header h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.15;
    color: var(--dark);
    margin-bottom: 16px;
}
.section-header p {
    font-size: 18px;
    color: var(--gray-600);
    max-width: 520px;
    margin: 0 auto;
}

/* ========================
   FEATURES
======================== */
.features-section {
    padding: 100px 0;
    background: var(--white);
}

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

.feature-card {
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: all 0.25s ease;
}
.feature-card:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 30px rgba(229,0,79,0.1);
    transform: translateY(-4px);
    background: var(--white);
}
.feature-card-highlight {
    background: var(--accent-light);
    border-color: rgba(229,0,79,0.2);
}
.feature-card-highlight:hover {
    background: var(--white);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}
.feature-card p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.65;
    margin-bottom: 20px;
}
.feature-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    transition: gap 0.2s;
}
.feature-link:hover { text-decoration: underline; }

/* ========================
   PAYMENTS
======================== */
.payments-section {
    padding: 100px 0;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

.payments-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.payment-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    cursor: default;
}
.payment-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(229,0,79,0.12);
    transform: translateY(-3px);
}
.payment-card img {
    height: 48px;
    width: auto;
    object-fit: contain;
}
.payment-card span {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
}

/* ========================
   HOW IT WORKS
======================== */
.how-it-works {
    padding: 100px 0;
    background: var(--white);
}

.steps-grid {
    display: flex;
    align-items: flex-start;
    gap: 0;
    justify-content: center;
}

.step-card {
    flex: 1;
    padding: 32px;
    border-radius: var(--radius-lg);
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    max-width: 320px;
    transition: all 0.2s;
}
.step-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 20px rgba(229,0,79,0.1);
}

.step-num {
    font-size: 48px;
    font-weight: 900;
    color: var(--accent);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 16px;
    letter-spacing: -2px;
}
.step-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--dark);
}
.step-card p {
    font-size: 15px;
    color: var(--gray-600);
    line-height: 1.65;
}

.step-arrow {
    font-size: 28px;
    color: var(--gray-400);
    padding: 0 20px;
    margin-top: 60px;
    flex-shrink: 0;
}

/* ========================
   CTA SECTION
======================== */
.cta-section {
    background: linear-gradient(135deg, #E5004F 0%, #b8003f 100%);
    padding: 100px 0;
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.cta-section h2 {
    font-size: clamp(28px, 4vw, 44px);
    font-weight: 800;
    color: var(--white);
    letter-spacing: -1.5px;
    line-height: 1.15;
    margin-bottom: 16px;
}
.cta-section p {
    font-size: 17px;
    color: rgba(255,255,255,0.8);
    max-width: 480px;
}

.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ========================
   FOOTER
======================== */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 80px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 60px;
    border-bottom: 1px solid #1e293b;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    margin: 20px 0 24px;
    max-width: 280px;
}

.social-links { display: flex; gap: 12px; }
.social-links a {
    width: 38px; height: 38px;
    border-radius: 8px;
    background: #1e293b;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    transition: all 0.2s;
}
.social-links a:hover { background: var(--accent); color: var(--white); }

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}
.footer-links h4 {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--white);
    margin-bottom: 20px;
}
.footer-links ul { display: flex; flex-direction: column; gap: 12px; }
.footer-links a {
    font-size: 14px;
    color: #94a3b8;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--white); }

.footer-bottom {
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: #475569;
    flex-wrap: wrap;
    gap: 8px;
}

/* ========================
   RESPONSIVE
======================== */
@media (max-width: 1024px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .payments-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 768px) {
    .nav-links, .nav-cta { display: none; }
    .hamburger { display: flex; }

    .hero { padding: 60px 0 80px; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero-visual { display: none; }
    .hero-content h1 { font-size: 36px; }

    .stats-inner { flex-wrap: wrap; gap: 8px; }
    .stat-item { padding: 20px 30px; min-width: 140px; }
    .stat-divider { display: none; }

    .features-grid { grid-template-columns: 1fr; }
    .payments-grid { grid-template-columns: repeat(2, 1fr); }

    .steps-grid { flex-direction: column; align-items: center; }
    .step-arrow { transform: rotate(90deg); margin: 0; padding: 10px 0; }

    .cta-inner { flex-direction: column; text-align: center; }
    .cta-actions { justify-content: center; }

    .footer-top { grid-template-columns: 1fr; }
    .footer-links { grid-template-columns: repeat(2, 1fr); }

    .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
    .hero-actions { flex-direction: column; }
    .btn-large { width: 100%; text-align: center; }
    .payments-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-links { grid-template-columns: 1fr; }
}