/* ===== Custom Properties ===== */
:root {
    --color-bg-dark: #0b0c14;
    --color-bg-hero: #0b0c14;
    --color-bg-light: #f9f9f9;
    --color-bg-subtle: #f0f0f4;
    --color-bg-shift: #0f172a;
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-light: #f1f5f9;
    --color-text-muted: #94a3b8;
    --color-text-soft: #a1a1aa;
    --color-text-tertiary: #71717a;
    --color-text-dim: #52525b;
    --color-accent: #3a52d1;
    --color-accent-hover: #2e43b0;
    --color-accent-glow: rgba(58, 82, 209, 0.15);
    --color-border: #e2e8f0;
    --color-border-dark: #27272a;
    --color-card: #ffffff;
    --color-card-dark: #18181b;
    --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-xs: 6px;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.12);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --max-width: 1140px;
    --nav-height: 72px;
    /* White overlay values for dark backgrounds */
    --overlay-02: rgba(255, 255, 255, 0.02);
    --overlay-03: rgba(255, 255, 255, 0.03);
    --overlay-04: rgba(255, 255, 255, 0.04);
    --overlay-05: rgba(255, 255, 255, 0.05);
    --overlay-06: rgba(255, 255, 255, 0.06);
    --overlay-07: rgba(255, 255, 255, 0.07);
    --overlay-08: rgba(255, 255, 255, 0.08);
    --overlay-09: rgba(255, 255, 255, 0.09);
    --overlay-10: rgba(255, 255, 255, 0.1);
    --overlay-12: rgba(255, 255, 255, 0.12);
    --overlay-20: rgba(255, 255, 255, 0.2);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
    background: var(--color-bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

section {
    scroll-margin-top: var(--nav-height);
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Navigation ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    transform: translateY(-100%);
    transition:
        transform var(--transition),
        background var(--transition);
}

.nav.visible {
    transform: translateY(0);
}

.nav-bg {
    position: absolute;
    inset: 0;
    background: rgba(9, 9, 11, 0.85);
    backdrop-filter: blur(20px) saturate(1.8);
    -webkit-backdrop-filter: blur(20px) saturate(1.8);
    border-bottom: 1px solid var(--overlay-06);
}

.nav-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 24px;
}

.nav-logo svg {
    height: 32px;
    width: auto;
    display: block;
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 36px;
    list-style: none;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition);
    letter-spacing: -0.01em;
}

.nav-links a:hover {
    color: var(--color-text-light);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 28px;
    height: 28px;
    z-index: 10;
}

.nav-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text-light);
    border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}

.nav-hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.active span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Mobile Menu ===== */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(9, 9, 11, 0.97);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    transition: opacity var(--transition);
}

.mobile-menu.open {
    display: flex;
    opacity: 1;
}

.mobile-menu a {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text-light);
    transition: color var(--transition);
}

.mobile-menu a:hover {
    color: var(--color-accent);
}

/* ===== Hero Section ===== */
.hero {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 0;
    background: var(--color-bg-hero);
    background: radial-gradient(ellipse at 50% 40%, #151528 0%, var(--color-bg-hero) 65%);
}

.hero-logo {
    max-width: 520px;
    width: 75%;
    flex-shrink: 0;
    height: auto;
    display: block;
    color: var(--color-accent);
    position: relative;
    z-index: 1;
}

.hero-outline {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2;
}

.hero-isotype-mask {
    display: none;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.hero-debug-panel {
    display: none;
}

.hero-debug-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.hero-debug-title,
.hero-debug-fps {
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hero-debug-title {
    color: rgba(241, 245, 249, 0.92);
}

.hero-debug-fps {
    color: rgba(148, 163, 184, 0.95);
}

.hero-debug-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hero-debug-btn {
    min-height: 34px;
    padding: 8px 10px;
    border: 1px solid var(--overlay-12);
    border-radius: 999px;
    background: var(--overlay-04);
    color: rgba(226, 232, 240, 0.84);
    font-size: 0.82rem;
    font-weight: 600;
    transition:
        background var(--transition),
        color var(--transition),
        border-color var(--transition),
        transform var(--transition);
}

.hero-debug-btn:hover {
    border-color: var(--overlay-20);
    color: rgba(255, 255, 255, 0.96);
}

.hero-debug-btn.active {
    background: rgba(58, 82, 209, 0.24);
    border-color: rgba(108, 135, 255, 0.42);
    color: rgba(255, 255, 255, 0.98);
}

.hero-debug-btn:active {
    transform: translateY(1px);
}

.hero-chevron {
    position: absolute;
    bottom: calc(40px + env(safe-area-inset-bottom, 0px));
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.hero-chevron:hover .hero-chevron-arrow {
    opacity: 0.9;
}

.hero-chevron-hint {
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-light);
    opacity: 0;
    transform: translateY(6px);
    transition:
        opacity 0.8s ease,
        transform 0.8s ease;
}

.hero-chevron-arrow {
    width: 28px;
    height: 28px;
    border-right: 2px solid var(--color-text-light);
    border-bottom: 2px solid var(--color-text-light);
    opacity: 0.5;
    animation: chevron-bounce 2s infinite;
}

@keyframes chevron-bounce {
    0%,
    100% {
        transform: translateY(0) rotate(45deg);
    }
    50% {
        transform: translateY(10px) rotate(45deg);
    }
}

/* ===== Content Wrapper ===== */
.content {
    position: relative;
    z-index: 10;
    margin-top: 100vh;
    margin-top: 100svh;
}

.content > section:first-child {
    box-shadow: 0 -30px 80px rgba(0, 0, 0, 0.3);
}

/* ===== Scroll Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(32px);
    transition:
        opacity 0.7s ease,
        transform 0.7s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-delay-1 {
    transition-delay: 0.1s;
}
.fade-in-delay-2 {
    transition-delay: 0.2s;
}
.fade-in-delay-3 {
    transition-delay: 0.3s;
}
.fade-in-delay-4 {
    transition-delay: 0.4s;
}
.fade-in-delay-5 {
    transition-delay: 0.5s;
}

/* ===== Section: About ===== */
.section-about {
    background: var(--color-bg-light);
    padding: 120px 0 100px;
}

.about-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.section-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4.5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
    margin-bottom: 24px;
}

.section-subtitle {
    font-size: clamp(1.05rem, 2vw, 1.2rem);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.about-hint {
    display: none; /* unused */
    margin-top: 32px;
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ===== Section: Product Switcher ===== */
.section-products-switch {
    background: var(--color-bg-light);
    padding: 40px 0 28px;
}

.products-switch-header {
    text-align: center;
    margin-bottom: 18px;
}

.products-switch-header .section-title {
    margin-bottom: 10px;
}

.product-switcher {
    max-width: 1120px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
}

.product-switch-btn {
    --product-switch-accent: var(--color-accent);
    min-height: 112px;
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
    gap: 10px;
    text-align: left;
    color: var(--color-text-secondary);
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 22px;
    box-shadow: var(--shadow-sm);
    transition:
        transform var(--transition),
        border-color var(--transition),
        box-shadow var(--transition),
        background var(--transition),
        color var(--transition);
}

.product-switch-btn:hover {
    border-color: rgba(58, 82, 209, 0.2);
    box-shadow: var(--shadow);
    transform: translateY(-1px);
}

.product-switch-btn.active {
    background: #ffffff;
    border-color: color-mix(in srgb, var(--product-switch-accent) 40%, var(--color-border));
    box-shadow:
        0 0 0 1px color-mix(in srgb, var(--product-switch-accent) 12%, transparent),
        0 10px 26px rgba(15, 23, 42, 0.08);
    color: var(--color-text-primary);
}

.product-switch-btn[data-product="shift"] {
    --product-switch-accent: #3a52d1;
}

.product-switch-btn[data-product="flow"] {
    --product-switch-accent: #10b981;
}

.product-switch-btn[data-product="erp"] {
    --product-switch-accent: #f59e0b;
}

.product-switch-btn[data-product="custom"] {
    --product-switch-accent: #e76f51;
}

.product-switch-title {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.02em;
    color: var(--color-text-primary);
}

.product-switch-meta {
    display: block;
    font-size: 0.84rem;
    line-height: 1.5;
    color: var(--color-text-secondary);
    max-width: 22ch;
}

.product-switch-btn.active .product-switch-title {
    color: var(--product-switch-accent);
}

.product-switch-btn.active .product-switch-meta {
    color: #334155;
}

.product-hidden {
    display: none;
}

/* ===== Section: Shift Product ===== */
.section-shift {
    background: linear-gradient(160deg, #0f172a 0%, var(--color-bg-dark) 100%);
    padding: 120px 0;
    color: var(--color-text-light);
}

.shift-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 64px;
}

.shift-header .section-title {
    color: var(--color-text-light);
}

.shift-header .section-subtitle {
    color: var(--color-text-muted);
}

.shift-tagline {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.section-shift--flow {
    background: linear-gradient(160deg, #0d2b23 0%, #071d18 100%);
}

.section-shift--flow .section-label,
.section-shift--flow .shift-tagline,
.section-shift--flow .feature-icon {
    color: #10b981;
}

.section-shift--flow .feature-icon {
    background: rgba(16, 185, 129, 0.15);
}

.section-shift--erp {
    background: linear-gradient(160deg, #1f2937 0%, #111827 100%);
}

.section-shift--erp .section-label,
.section-shift--erp .shift-tagline,
.section-shift--erp .feature-icon {
    color: #f59e0b;
}

.section-shift--erp .feature-icon {
    background: rgba(245, 158, 11, 0.14);
}

.section-shift--custom {
    background:
        radial-gradient(circle at top right, rgba(231, 111, 81, 0.16), transparent 32%),
        linear-gradient(160deg, #162032 0%, #0f172a 52%, #0b1220 100%);
}

.section-shift--custom .section-label,
.section-shift--custom .shift-tagline,
.section-shift--custom .feature-icon {
    color: #f28b68;
}

.section-shift--custom .feature-icon {
    background: rgba(242, 139, 104, 0.16);
}

.custom-features-grid {
    margin-bottom: 32px;
}

/* ===== Features Grid ===== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    scroll-margin-top: calc(var(--nav-height) + 16px);
}

.feature-card {
    background: var(--overlay-04);
    border: 1px solid var(--overlay-06);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition:
        background var(--transition),
        border-color var(--transition),
        transform var(--transition);
}

.feature-card:hover {
    background: var(--overlay-07);
    border-color: var(--overlay-12);
    transform: translateY(-4px);
}

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-glow);
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    color: var(--color-accent);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
    color: var(--color-text-light);
}

.feature-card p {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-muted);
}

/* ===== Section: Screenshots ===== */
.section-screenshots {
    background: var(--color-bg-light);
    padding: 120px 0;
}

.screenshots-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 48px;
}

.tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 40px;
}

.tab-btn {
    padding: 10px 20px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    transition: all var(--transition);
    white-space: nowrap;
}

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

.tab-btn.active {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.tab-panels {
    position: relative;
}

.tab-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}

.tab-panel.active {
    position: relative;
    opacity: 1;
    pointer-events: auto;
}

.tab-image-wrapper {
    width: 100%;
    max-width: 960px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    cursor: zoom-in;
}

.tab-image-wrapper img {
    width: 100%;
    display: block;
}

.tab-description {
    max-width: 640px;
    text-align: center;
    margin-top: 28px;
}

.tab-description h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text-primary);
}

.tab-description p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===== Section: Contact ===== */
.section-pricing {
    background: linear-gradient(160deg, #0f172a 0%, var(--color-bg-dark) 100%);
    padding: 120px 0;
    color: var(--color-text-light);
}

.pricing-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 64px;
}

.pricing-header .section-title {
    color: var(--color-text-light);
}

.pricing-header .section-subtitle {
    color: var(--color-text-muted);
}

.pricing-layout {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 48px;
    max-width: 960px;
    margin: 0 auto;
    align-items: start;
}

.pricing-tiers-heading {
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.tier-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.tier-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--overlay-04);
    border: 1px solid var(--overlay-07);
    border-radius: var(--radius-sm);
    transition:
        background var(--transition),
        border-color var(--transition);
}

.tier-item.active {
    background: rgba(58, 82, 209, 0.1);
    border-color: var(--color-accent);
}

.tier-range {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.tier-item.active .tier-range {
    color: var(--color-text-light);
}

.tier-desc {
    font-size: 0.78rem;
    color: var(--color-text-dim);
    margin-top: 2px;
}

.tier-rate {
    font-size: 1.1rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.tier-item.active .tier-rate {
    color: var(--color-accent);
}

.tier-rate-unit {
    font-size: 0.78rem;
    font-weight: 500;
    color: inherit;
}

.pricing-min-note {
    font-size: 0.82rem;
    color: var(--color-text-dim);
    margin-bottom: 28px;
    padding-left: 4px;
}

/* Compact per-user rate shown on mobile inside calculator */
.calc-rate-compact {
    display: none;
    align-items: baseline;
    justify-content: center;
    gap: 6px;
    padding: 10px 0 4px;
}

.calc-rate-compact-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-accent);
}

.calc-rate-compact-unit {
    font-size: 0.85rem;
    color: var(--color-text-soft);
}

.kiosk-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: var(--overlay-03);
    border: 1px solid var(--overlay-07);
    border-radius: var(--radius-sm);
}

.kiosk-row-left {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.kiosk-product-label {
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 2px;
}

.kiosk-product-desc {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.kiosk-row-price {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text-light);
}

/* Calc box */
.calc-box {
    background: var(--overlay-04);
    border: 1px solid var(--overlay-09);
    border-radius: var(--radius);
    padding: 36px 32px;
}

.calc-box-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.calc-box-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-light);
    margin-bottom: 28px;
}

.calc-slider-row {
    margin-bottom: 28px;
}

.calc-slider-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 14px;
}

.calc-slider-text {
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

.calc-slider-num {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text-light);
    line-height: 1;
}

.calc-slider-num span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-left: 4px;
}

input[type="range"].calc-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    background: var(--overlay-10);
    border-radius: 3px;
    cursor: pointer;
    outline: none;
}

input[type="range"].calc-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s;
}

input[type="range"].calc-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

input[type="range"].calc-range::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--color-accent);
    border-radius: 50%;
    border: none;
    cursor: pointer;
}

.calc-range-marks {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-text-dim);
    margin-top: 8px;
    margin-bottom: 6px;
}

.calc-divider {
    height: 1px;
    background: var(--overlay-08);
    margin: 24px 0;
}

.calc-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.calc-row label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.calc-stepper {
    display: flex;
    align-items: center;
    border: 1px solid var(--overlay-12);
    border-radius: var(--radius-xs);
    overflow: hidden;
}

.calc-stepper button {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--overlay-06);
    color: var(--color-text-light);
    font-size: 1.2rem;
    font-weight: 600;
    transition: background var(--transition);
}

.calc-stepper button:hover {
    background: var(--overlay-12);
}

.calc-stepper .calc-value {
    width: 48px;
    text-align: center;
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-light);
    background: none;
    border: none;
    font-family: var(--font-sans);
}

.calc-total-box {
    background: rgba(58, 82, 209, 0.08);
    border: 1px solid rgba(58, 82, 209, 0.25);
    border-radius: var(--radius-sm);
    padding: 24px;
    text-align: center;
    margin-top: 4px;
}

.calc-total-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.calc-total-amount {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -0.04em;
    color: var(--color-text-light);
    line-height: 1;
    margin-bottom: 4px;
}

.calc-total-period {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.calc-breakdown {
    font-size: 0.82rem;
    color: var(--color-text-tertiary);
    line-height: 1.7;
}

.calc-quote-btn {
    width: 100%;
    margin-top: 12px;
    padding: 11px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-sans);
    color: #fff;
    background: var(--color-accent);
    border: none;
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition:
        background var(--transition),
        transform var(--transition);
}

.calc-quote-btn:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.calc-quote-btn:active {
    transform: translateY(0);
}

/* ===== Flow Pricing Card ===== */
.flow-pricing-card {
    margin: 64px auto 0;
    max-width: 760px;
    padding: 40px 34px;
    border-radius: var(--radius);
    border: 1px solid rgba(16, 185, 129, 0.25);
    background: var(--overlay-03);
    text-align: center;
}

.flow-price-row {
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
}

.flow-price {
    font-size: 2.7rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--color-text-light);
}

.flow-price-period {
    font-size: 1rem;
    color: var(--color-text-muted);
}

.flow-price-vat {
    display: block;
    margin-top: 4px;
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.flow-pricing-card h3 {
    margin: 14px 0 10px;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-light);
}

.flow-pricing-card p {
    max-width: 560px;
    margin: 0 auto;
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

.flow-cta {
    display: inline-block;
    margin-top: 20px;
    padding: 11px 18px;
    border-radius: var(--radius-xs);
    background: #10b981;
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    transition:
        background var(--transition),
        transform var(--transition);
}

.flow-cta:hover {
    background: #059669;
    transform: translateY(-1px);
}

.erp-teaser {
    max-width: 760px;
    margin: 0 auto;
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(245, 158, 11, 0.28);
    background: var(--overlay-03);
    text-align: center;
}

.erp-teaser h3 {
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-bottom: 10px;
}

.erp-teaser p {
    color: var(--color-text-muted);
    max-width: 560px;
    margin: 0 auto;
}

.custom-teaser {
    max-width: 760px;
    margin: 0 auto;
    padding: 32px;
    border-radius: var(--radius);
    border: 1px solid rgba(242, 139, 104, 0.24);
    background: linear-gradient(180deg, var(--overlay-04), var(--overlay-02));
    box-shadow: inset 0 1px 0 var(--overlay-04);
    text-align: center;
}

.custom-teaser h3 {
    font-size: 1.2rem;
    color: var(--color-text-light);
    margin-bottom: 10px;
}

.custom-teaser p {
    color: var(--color-text-muted);
    max-width: 560px;
    margin: 0 auto;
}

.custom-cta {
    display: inline-block;
    margin-top: 20px;
    padding: 11px 18px;
    border-radius: var(--radius-xs);
    background: #f28b68;
    color: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 10px 24px rgba(242, 139, 104, 0.18);
    transition:
        background var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.custom-cta:hover {
    background: #e97852;
    box-shadow: 0 14px 28px rgba(242, 139, 104, 0.24);
    transform: translateY(-1px);
}

/* ===== Section: Tools ===== */
.section-tools {
    background:
        radial-gradient(circle at top left, rgba(58, 82, 209, 0.08), transparent 34%),
        linear-gradient(180deg, #f8fafc 0%, #eef4ff 100%);
    padding: 120px 0;
}

.tools-header {
    text-align: center;
    max-width: 760px;
    margin: 0 auto 56px;
}

.tool-spotlight {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.9fr);
    gap: 24px;
    align-items: stretch;
}

.tool-spotlight-main,
.tool-points {
    border-radius: 24px;
    border: 1px solid rgba(58, 82, 209, 0.12);
    box-shadow: var(--shadow);
}

.tool-spotlight-main {
    padding: 36px;
    background: linear-gradient(135deg, rgba(58, 82, 209, 0.06), rgba(58, 82, 209, 0.015)), #ffffff;
}

.tool-badge {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 14px;
    border-radius: 999px;
    background: rgba(58, 82, 209, 0.08);
    color: var(--color-accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tool-spotlight-main h3 {
    margin: 20px 0 14px;
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

.tool-spotlight-main p {
    max-width: 58ch;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.tool-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 28px;
}

.tool-primary-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 20px;
    border-radius: 14px;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.92rem;
    font-weight: 700;
    box-shadow: 0 12px 28px rgba(58, 82, 209, 0.22);
    transition:
        background var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.tool-primary-cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 16px 34px rgba(58, 82, 209, 0.28);
}

.tool-note {
    font-size: 0.84rem;
    color: var(--color-text-secondary);
}

.tool-points {
    display: grid;
    gap: 1px;
    overflow: hidden;
    background: rgba(58, 82, 209, 0.1);
}

.tool-point {
    display: grid;
    gap: 8px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.92);
}

.tool-point strong {
    font-size: 1rem;
    letter-spacing: -0.01em;
    color: var(--color-text-primary);
}

.tool-point span {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ===== Section: Contact ===== */
.section-contact {
    background: var(--color-bg-dark);
    padding: 120px 0;
    color: var(--color-text-light);
}

.contact-header {
    text-align: center;
    max-width: 540px;
    margin: 0 auto 64px;
}

.contact-header .section-title {
    color: var(--color-text-light);
}

.contact-header .section-subtitle {
    color: var(--color-text-muted);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 64px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact-info-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(37, 99, 235, 0.12);
    border-radius: var(--radius-sm);
    color: var(--color-accent);
}

.contact-info-icon svg {
    width: 20px;
    height: 20px;
}

.contact-info-label {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.contact-info-value {
    font-size: 1.05rem;
    color: var(--color-text-light);
}

.contact-info-value a {
    color: var(--color-accent);
    transition: color var(--transition);
}

.contact-info-location {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.contact-info-value a:hover {
    color: #60a5fa;
}

/* ===== Contact Form ===== */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-margin-top: var(--nav-height);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.form-optional {
    font-weight: 400;
    opacity: 0.6;
}

.form-group input,
.form-group textarea {
    font-family: var(--font-sans);
    font-size: 0.95rem;
    padding: 14px 16px;
    background: var(--color-card-dark);
    border: 1px solid var(--color-border-dark);
    border-radius: var(--radius-xs);
    color: var(--color-text-light);
    transition:
        border-color var(--transition),
        box-shadow var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-dim);
}

.form-group textarea {
    min-height: 130px;
    resize: vertical;
}

.form-product-interest {
    background: linear-gradient(180deg, var(--overlay-04), var(--overlay-02));
    border: 1px solid var(--overlay-08);
    border-radius: 14px;
    padding: 14px;
}

.form-product-interest-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.form-product-interest-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.form-product-interest-hint {
    font-size: 0.76rem;
    color: rgba(148, 163, 184, 0.8);
}

.form-product-interest-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.form-product-interest-option {
    position: relative;
    display: block;
    cursor: pointer;
    user-select: none;
}

.form-product-interest-option input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.form-product-interest-chip {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 44px;
    padding: 10px 14px;
    border-radius: 999px;
    border: 1px solid var(--overlay-08);
    background: var(--overlay-03);
    color: var(--color-text-muted);
    transition:
        border-color var(--transition),
        background var(--transition),
        color var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.form-product-interest-chip-mark {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.45);
    background: transparent;
    flex-shrink: 0;
    transition:
        border-color var(--transition),
        background var(--transition),
        box-shadow var(--transition);
}

.form-product-interest-chip-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.form-product-interest-chip-text {
    font-size: 0.84rem;
    font-weight: 600;
    color: inherit;
}

.form-product-interest-chip-meta {
    font-size: 0.75rem;
    color: rgba(148, 163, 184, 0.88);
}

.form-product-interest-option:hover .form-product-interest-chip {
    border-color: rgba(96, 165, 250, 0.24);
    background: var(--overlay-05);
    color: var(--color-text-light);
    transform: translateY(-1px);
}

.form-product-interest-option.is-selected .form-product-interest-chip {
    border-color: rgba(58, 82, 209, 0.5);
    background: rgba(58, 82, 209, 0.14);
    box-shadow: inset 0 0 0 1px rgba(58, 82, 209, 0.18);
    color: var(--color-text-light);
}

.form-product-interest-option.is-selected .form-product-interest-chip-mark {
    border-color: var(--color-accent);
    background: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(58, 82, 209, 0.16);
}

.form-product-interest-option--calc {
    margin-top: 12px;
}

.form-product-interest-option--calc[hidden] {
    display: none;
}

.form-product-interest-option--calc .form-product-interest-chip {
    width: 100%;
    justify-content: flex-start;
    border-radius: 14px;
    padding: 12px 14px;
}

.form-submit {
    align-self: flex-start;
    padding: 14px 36px;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    background: var(--color-accent);
    border-radius: var(--radius-xs);
    transition:
        background var(--transition),
        transform var(--transition);
}

.form-submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.form-submit:active {
    transform: translateY(0);
}

.form-field-error {
    font-size: 0.8rem;
    color: #e05252;
    margin-top: 4px;
    min-height: 1.2em;
}

.form-message {
    padding: 12px 16px;
    border-radius: var(--radius-xs);
    font-size: 0.88rem;
    display: none;
}

.form-message--success {
    background: rgba(0, 162, 154, 0.15);
    border: 1px solid rgba(0, 162, 154, 0.3);
    color: #4dd4cc;
}

.form-message--error {
    background: rgba(224, 82, 82, 0.12);
    border: 1px solid rgba(224, 82, 82, 0.3);
    color: #e05252;
}

.form-note {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-top: -8px;
}

.calc-attach-preview {
    display: none;
    margin-top: 12px;
    padding: 10px 12px;
    background: rgba(58, 82, 209, 0.1);
    border-radius: var(--radius-xs);
    border: 1px solid rgba(58, 82, 209, 0.18);
    font-size: 0.78rem;
    color: var(--color-text-soft);
    line-height: 1.5;
}

/* ===== Section: Privacy ===== */
.section-privacy {
    background: var(--color-bg-dark);
    padding: 8px 0 40px;
}

.privacy-note {
    max-width: 760px;
    margin: 0 auto;
    text-align: center;
}

.privacy-note p {
    color: var(--color-text-tertiary);
    font-size: 0.8rem;
    line-height: 1.7;
}

.privacy-note a {
    color: var(--color-text-soft);
}

.privacy-note a:hover {
    color: var(--color-text-light);
}

/* ===== Footer ===== */
.footer {
    background: var(--color-bg-dark);
    border-top: 1px solid var(--color-border-dark);
    padding: 32px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.footer p {
    font-size: 0.82rem;
    color: var(--color-text-dim);
}

.footer-link {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.footer-link:hover {
    color: var(--color-text-light);
}

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .pricing-layout {
        grid-template-columns: 1fr;
        max-width: 560px;
    }

    .pricing-tiers-col {
        display: none;
    }

    .calc-rate-compact {
        display: flex;
    }

    .calc-box {
        padding: 28px 20px;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav-links {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    :is(
        .section-about,
        .section-products-switch,
        .section-shift,
        .section-screenshots,
        .section-pricing,
        .section-tools,
        .section-contact
    ) {
        padding: 80px 0;
    }

    .tool-spotlight {
        grid-template-columns: 1fr;
    }

    .section-privacy {
        padding-bottom: 32px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .feature-card {
        padding: 28px 24px;
    }

    .hero-logo {
        max-width: 380px;
        width: 70%;
    }

    .hero {
        padding-bottom: 100px;
    }

    .tabs {
        gap: 6px;
    }

    .product-switcher {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .product-switch-btn {
        width: 100%;
        min-height: 0;
        padding: 16px 18px;
        gap: 6px;
        border-radius: 18px;
    }

    .tab-btn {
        padding: 8px 14px;
        font-size: 0.8rem;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .form-submit {
        width: 100%;
        text-align: center;
    }

    .form-product-interest-options {
        gap: 8px;
    }

    .form-product-interest-head {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    :is(
        .section-about,
        .section-products-switch,
        .section-shift,
        .section-screenshots,
        .section-pricing,
        .section-tools,
        .section-contact
    ) {
        padding: 64px 0;
    }

    .tool-spotlight-main,
    .tool-point {
        padding: 24px 20px;
    }

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

    .tool-primary-cta {
        width: 100%;
    }

    .section-privacy {
        padding-bottom: 28px;
    }

    .hero-logo {
        max-width: 300px;
        width: 65%;
    }

    .hero {
        padding-bottom: 130px;
    }

    .hero-chevron {
        bottom: calc(env(safe-area-inset-bottom, 0px) + 72px);
    }

    .product-switcher {
        gap: 6px;
    }

    .product-switch-btn {
        padding: 14px 16px;
    }

    .product-switch-title {
        font-size: 0.95rem;
    }

    .product-switch-meta {
        font-size: 0.79rem;
    }

    .form-product-interest-options {
        gap: 8px;
    }

    .form-product-interest-option {
        width: 100%;
    }

    .form-product-interest-chip {
        width: 100%;
        border-radius: 14px;
    }
}
/* ===== Lightbox ===== */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    cursor: zoom-out;
}

.lightbox.open {
    opacity: 1;
    pointer-events: auto;
}

.lightbox img {
    max-width: 92vw;
    max-height: 90vh;
    border-radius: var(--radius-sm);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: scale(0.92);
    transition: transform 0.3s ease;
}

.lightbox.open img {
    transform: scale(1);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 24px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    font-weight: 300;
    opacity: 0.7;
    transition: opacity var(--transition);
    cursor: pointer;
}

.lightbox-close:hover {
    opacity: 1;
}