/* ===== LOGRON UNIFIED STYLES ===== */
/* All styles for index.html and use case pages */

:root {
    --color-ink: #0a0a0b;
    --color-ink-light: #3d3d43;
    --color-ink-muted: #71717a;
    --color-surface: #ffffff;
    --color-surface-raised: #fafafa;
    --color-surface-sunken: #f4f4f5;
    --color-surface-alt: #f8fafc;
    --color-border: #e4e4e7;
    --color-border-subtle: #f0f0f2;
    --color-border-strong: #d4d4d8;
    --color-accent: #0066ff;
    --color-accent-soft: #e6f0ff;
    --color-accent-light: #ecfeff;
    --color-accent-border: #bfdbfe;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;
    --radius: 16px;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
    --shadow-xl: 0 24px 80px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.06);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--color-ink);
    background: var(--color-surface);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    color: var(--color-ink-light);
    font-size: 1.125rem;
}

.mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
}

/* ===== LAYOUT ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
}

.container--narrow {
    max-width: 900px;
}

section {
    padding: clamp(4rem, 8vw, 8rem) 0;
}

/* ===== NAV / HEADER ===== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
}

.nav__inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-ink);
    font-weight: 700;
    font-size: 1.125rem;
}

.nav__logo-icon {
    width: 32px;
    height: 32px;
    background: var(--color-ink);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    padding: 6px;
}

.nav__logo-icon svg {
    width: 100%;
    height: 100%;
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    text-decoration: none;
    color: var(--color-ink-light);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color 0.2s;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav__link:hover {
    color: var(--color-ink);
}

.nav__link svg {
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

.nav__dropdown {
    position: relative;
}

.nav__dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem;
    min-width: 180px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
    margin-top: 8px;
}

.nav__dropdown:hover .nav__dropdown-menu {
    opacity: 1;
    visibility: visible;
}

.nav__dropdown-menu a {
    display: block;
    padding: 0.625rem 1rem;
    text-decoration: none;
    color: var(--color-ink-light);
    font-size: 0.9375rem;
    border-radius: var(--radius-sm);
    transition: all 0.15s;
}

.nav__dropdown-menu a:hover {
    background: var(--color-surface-sunken);
    color: var(--color-ink);
}

.nav__right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav__back {
    color: var(--color-ink-muted);
    text-decoration: none;
    font-size: 14px;
}

.nav__back:hover {
    color: var(--color-ink);
}

/* ===== LANGUAGE SWITCHER ===== */
.lang-switcher {
    display: flex;
    align-items: center;
    background: var(--color-surface-sunken);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    padding: 4px;
    gap: 4px;
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-ink-muted);
    cursor: pointer;
    border-radius: 100px;
    transition: all 0.2s ease;
}

.lang-btn:hover {
    color: var(--color-ink);
}

.lang-btn.active {
    background: var(--color-surface);
    color: var(--color-ink);
    box-shadow: var(--shadow-sm);
}

/* ===== COMPONENTS ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--color-surface-sunken);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-ink-muted);
    margin-bottom: 1.5rem;
}

.badge::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-success);
    border-radius: 50%;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn--sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn--primary {
    background: var(--color-ink);
    color: white;
}

.btn--primary:hover {
    background: #1a1a1f;
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background: transparent;
    color: var(--color-ink);
    border: 1px solid var(--color-border);
}

.btn--secondary:hover {
    background: var(--color-surface-sunken);
    border-color: var(--color-ink-muted);
}

.btn--full {
    width: 100%;
}

/* ===== IMAGE FRAME ===== */
.frame {
    background: linear-gradient(145deg, #f8f8f8 0%, #f0f0f0 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 1rem;
    box-shadow: var(--shadow-md);
}

.frame img {
    width: 100%;
    border-radius: var(--radius-lg);
    display: block;
}

.frame--dark {
    background: linear-gradient(145deg, #1a1a1f 0%, #0a0a0b 100%);
    border-color: #2a2a2f;
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 102, 255, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-raised) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.hero__grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    align-items: center;
}

.hero__content {
    max-width: 560px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 14px;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: 24px;
}

.hero__badge svg {
    width: 20px;
    height: 20px;
}

.hero__title {
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-ink-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: var(--color-ink-muted);
    margin-bottom: 2.5rem;
    max-width: 480px;
}

.hero__highlight {
    color: var(--color-ink);
    font-weight: 600;
}

.hero__cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero__trust {
    margin-top: 2.5rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.hero__trust-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: var(--color-ink-muted);
}

.hero__trust-item svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-success);
    fill: none;
    stroke-width: 2;
}

.hero__image {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__image img {
    width: 90%;
    max-width: 500px;
    border-radius: 0;
    box-shadow: none;
    transition: transform 0.5s ease;
}

.hero__image:hover img {
    transform: scale(1.02);
}

/* ===== USE CASES SECTION ===== */
.usecases-section {
    padding: 4rem 0 5rem;
    background: var(--color-surface-sunken);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.usecases-section__header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.usecases-section__header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.usecases-section__header p {
    color: var(--color-ink-muted);
}

.usecases-section__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.usecase-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--color-ink);
    transition: all 0.2s ease;
}

.usecase-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.usecase-card:hover .usecase-card__arrow {
    transform: translateX(4px);
    stroke: var(--color-accent);
}

.usecase-card__icon {
    width: 48px;
    height: 48px;
    background: var(--color-surface-sunken);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.usecase-card__icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-ink);
    fill: none;
    stroke-width: 1.5;
}

.usecase-card__content {
    flex: 1;
    min-width: 0;
}

.usecase-card__content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.usecase-card__content p {
    font-size: 0.8125rem;
    color: var(--color-ink-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.usecase-card__arrow {
    width: 20px;
    height: 20px;
    stroke: var(--color-ink-muted);
    fill: none;
    stroke-width: 2;
    flex-shrink: 0;
    transition: all 0.2s ease;
}

/* ===== PROBLEM SECTION — Dark ===== */
.problem {
    background: var(--color-ink);
    color: white;
}

.problem__layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.problem__content {
    position: sticky;
    top: calc(80px + 2rem);
}

.problem__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.problem__content h2 {
    color: white;
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.problem__content p {
    color: rgba(255,255,255,0.6);
    font-size: 1rem;
    line-height: 1.7;
}

.problem__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.problem__item {
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: all 0.25s ease;
}

.problem__item:hover {
    background: rgba(255,255,255,0.05);
    border-color: rgba(255,255,255,0.1);
}

.problem__icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.problem__icon svg {
    width: 24px;
    height: 24px;
    stroke: rgba(255,255,255,0.4);
    fill: none;
    stroke-width: 1.5;
}

.problem__item h4 {
    color: white;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.problem__item p {
    color: rgba(255,255,255,0.5);
    font-size: 0.875rem;
    line-height: 1.6;
    margin: 0;
}

/* ===== SOLUTION SECTION ===== */
.solution {
    background: linear-gradient(180deg, var(--color-surface-raised) 0%, var(--color-surface) 100%);
}

.solution__header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.solution__header h2 {
    margin-bottom: 1rem;
}

.solution__header p {
    color: var(--color-ink-muted);
}

.solution__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.solution__features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.solution__feature {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all 0.25s ease;
}

.solution__feature:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-sm);
}

.solution__feature-icon {
    width: 40px;
    height: 40px;
    background: var(--color-accent-soft);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.solution__feature-icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-accent);
    fill: none;
    stroke-width: 2;
}

.solution__feature h4 {
    font-size: 0.9375rem;
    margin-bottom: 0.375rem;
}

.solution__feature p {
    font-size: 0.8125rem;
    color: var(--color-ink-muted);
    margin: 0;
    line-height: 1.5;
}

.solution__image {
    position: relative;
}

.solution__image .frame {
    transition: transform 0.5s ease;
}

.solution__image:hover .frame {
    transform: scale(1.02);
}

/* ===== HARDWARE SECTION ===== */
.hardware {
    background: var(--color-surface-sunken);
}

.hardware__layout {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
    align-items: start;
}

.hardware__content {
    position: sticky;
    top: calc(80px + 2rem);
}

.hardware__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-ink-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
}

.hardware__content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hardware__content > p {
    color: var(--color-ink-muted);
    font-size: 1rem;
    line-height: 1.7;
}

.hardware__specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.hardware__spec {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: all 0.25s ease;
}

.hardware__spec:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-sm);
}

.hardware__spec-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hardware__spec-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-ink-light);
    fill: none;
    stroke-width: 1.5;
}

.hardware__spec strong {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hardware__spec span {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    line-height: 1.6;
}

.hardware__image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ===== DATA FLOW SECTION ===== */
.dataflow {
    position: relative;
    overflow: hidden;
}

.dataflow__header {
    text-align: center;
    margin-bottom: 3rem;
}

.dataflow__header p {
    max-width: 700px;
    margin: 1rem auto 0;
}

.dataflow__steps {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.dataflow__step {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dataflow__step-box {
    background: var(--color-ink);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-weight: 500;
    font-size: 0.9375rem;
    white-space: nowrap;
}

.dataflow__arrow {
    color: var(--color-ink-muted);
    font-size: 1.25rem;
    padding: 0 0.5rem;
}

.dataflow__image {
    max-width: 1000px;
    margin: 0 auto;
}

/* ===== DASHBOARD SECTION ===== */
.dashboard {
    background: linear-gradient(180deg, var(--color-surface-sunken) 0%, var(--color-surface) 50%);
}

.dashboard__header {
    text-align: center;
    margin-bottom: 3rem;
}

.dashboard__header p {
    max-width: 600px;
    margin: 1rem auto 0;
}

.dashboard__showcase {
    max-width: 1100px;
    margin: 0 auto;
}

.dashboard__showcase img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.dashboard__features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

.dashboard__feature {
    text-align: center;
    padding: 1.5rem;
}

.dashboard__feature-icon {
    width: 56px;
    height: 56px;
    background: var(--color-surface-sunken);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.dashboard__feature-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-ink-muted);
    fill: none;
    stroke-width: 1.5;
}

.dashboard__feature h4 {
    margin-bottom: 0.5rem;
}

.dashboard__feature p {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    margin: 0;
}

/* ===== TRACEABILITY SECTION ===== */
.trace {
    background: var(--color-surface);
}

.trace__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: center;
}

.trace__content h2 {
    margin-bottom: 1.5rem;
}

.trace__quote {
    background: var(--color-surface-sunken);
    border-left: 3px solid var(--color-accent);
    padding: 1.5rem 2rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    margin: 2rem 0;
}

.trace__quote p {
    font-style: italic;
    margin: 0;
    color: var(--color-ink);
}

.trace__image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* ===== PERFORMANCE SECTION ===== */
.performance {
    background: var(--color-surface-sunken);
}

.performance__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: center;
}

.performance__image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.performance__list {
    list-style: none;
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.performance__list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.0625rem;
}

.performance__list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--color-success);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
    flex-shrink: 0;
}

/* ===== ALERTS SECTION ===== */
.alerts {
    background: var(--color-surface);
}

.alerts__grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 6rem;
    align-items: center;
}

.alerts__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.alerts__stat {
    background: var(--color-surface-sunken);
    border: 1px solid var(--color-border);
    padding: 1.5rem;
    border-radius: var(--radius-md);
}

.alerts__stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1;
}

.alerts__stat-label {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    margin-top: 0.5rem;
}

.alerts__image img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* ===== MOBILE APP SECTION ===== */
.mobile {
    background: linear-gradient(180deg, var(--color-surface-sunken) 0%, var(--color-surface) 100%);
}

.mobile__grid {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.mobile__content h2 {
    margin-bottom: 1rem;
}

.mobile__content > p {
    max-width: 600px;
    margin: 0 auto 2rem;
}

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

.mobile__step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
}

.mobile__step-num {
    width: 32px;
    height: 32px;
    background: var(--color-ink);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.mobile__step h4 {
    margin-bottom: 0.25rem;
}

.mobile__step p {
    font-size: 0.9375rem;
    color: var(--color-ink-muted);
    margin: 0;
}

.mobile__phones {
    display: flex;
    gap: 2rem;
    justify-content: center;
    align-items: flex-end;
}

.mobile__phone {
    flex: 0 0 auto;
}

.mobile__phone img {
    max-height: 500px;
    width: auto;
}

.mobile__phone--secondary {
    transform: translateY(-20px);
}

/* ===== PRICING SECTION ===== */
.pricing {
    background: var(--color-surface-sunken);
}

.pricing__header {
    text-align: center;
    margin-bottom: 3rem;
}

.pricing__header h2 {
    margin-bottom: 0.75rem;
}

.pricing__header p {
    color: var(--color-ink-muted);
    font-size: 1.125rem;
}

.pricing__calculator {
    max-width: 600px;
    margin: 0 auto;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

.pricing__toggle {
    display: flex;
    background: var(--color-surface-sunken);
    border-radius: var(--radius-md);
    padding: 4px;
    margin-bottom: 2rem;
}

.pricing__toggle-btn {
    flex: 1;
    padding: 0.875rem 1.5rem;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-ink-muted);
    cursor: pointer;
    border-radius: calc(var(--radius-md) - 2px);
    transition: all 0.2s ease;
}

.pricing__toggle-btn.active {
    background: var(--color-surface);
    color: var(--color-ink);
    box-shadow: var(--shadow-sm);
}

.pricing__toggle-btn:hover:not(.active) {
    color: var(--color-ink);
}

.pricing__slider-section {
    margin-bottom: 2rem;
}

.pricing__slider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.pricing__slider-label {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
}

.pricing__slider-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-ink);
}

.pricing__slider {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: var(--color-surface-sunken);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
}

.pricing__slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--color-ink);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s ease;
}

.pricing__slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.pricing__slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--color-ink);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.pricing__slider-range {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--color-ink-muted);
    margin-top: 0.5rem;
}

.pricing__result {
    text-align: center;
    padding: 2rem;
    background: var(--color-surface-sunken);
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
}

.pricing__total-label {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    margin-bottom: 0.5rem;
}

.pricing__total {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.pricing__total-period {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
}

.pricing__breakdown {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    margin-top: 1rem;
}

.pricing__notes {
    text-align: left;
    margin: 0 0 2rem 0;
    padding: 1.25rem;
    background: var(--color-surface-sunken);
    border-radius: var(--radius-md);
}

.pricing__notes p {
    font-size: 0.8125rem;
    color: var(--color-ink-muted);
    margin: 0 0 0.5rem 0;
    line-height: 1.6;
}

.pricing__notes p:last-child {
    margin-bottom: 0;
}

.pricing__cta {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.pricing__contact {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.pricing__contact p {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    margin-bottom: 0.5rem;
}

.pricing__contact a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
}

.pricing__contact a:hover {
    text-decoration: underline;
}

.business__card p {
    font-size: 0.9375rem;
    color: var(--color-ink-muted);
    margin: 0;
}

/* ===== ABOUT SECTION ===== */
.about {
    background: var(--color-surface-sunken);
    position: relative;
}

.about::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.about__grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about__label {
    display: inline-block;
    color: var(--color-accent);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
}

.about__title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 2rem;
    line-height: 1.3;
}

.about__text p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    color: var(--color-ink-light);
}

.about__text p:last-child {
    margin-bottom: 0;
}

.about__values {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    padding-top: 2rem;
}

.about__value {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.about__value-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.about__value-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-accent);
}

.about__value-text h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.about__value-text p {
    font-size: 0.875rem;
    color: var(--color-ink-muted);
    margin: 0;
}

/* ===== CLOSING SECTION ===== */
.closing {
    background: linear-gradient(180deg, var(--color-surface) 0%, var(--color-surface-sunken) 100%);
    text-align: center;
    padding: 8rem 0;
    position: relative;
}

.closing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-border), transparent);
}

.closing h2 {
    max-width: 800px;
    margin: 0 auto 1.5rem;
}

.closing__tagline {
    font-size: 1.25rem;
    color: var(--color-ink-muted);
    margin-bottom: 3rem;
}

.closing__cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* ===== USE CASE PAGE STYLES ===== */
.section {
    padding: 80px 0;
}

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

.section__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 48px;
}

.section__title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.section__subtitle {
    color: var(--color-ink-light);
    font-size: 1.125rem;
}

/* Problem Cards (Use Case Pages) */
.problems {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.problem-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
}

.problem-card__icon {
    width: 48px;
    height: 48px;
    background: #fef2f2;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.problem-card__icon svg {
    width: 24px;
    height: 24px;
    stroke: #b91c1c;
    fill: none;
    stroke-width: 1.5;
}

.problem-card__title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.problem-card__text {
    color: var(--color-ink-light);
    font-size: 15px;
}

/* Solution Cards (Use Case Pages) */
.solutions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.solution-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 32px;
    display: flex;
    gap: 20px;
}

.solution-card__num {
    width: 40px;
    height: 40px;
    background: var(--color-accent);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.solution-card__title {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.solution-card__text {
    color: var(--color-ink-light);
    font-size: 15px;
}

/* Stats (Use Case Pages) */
.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}

.stat {
    padding: 32px;
}

.stat__value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-accent);
    line-height: 1;
}

.stat__label {
    margin-top: 8px;
    color: var(--color-ink-light);
    font-size: 15px;
}

/* Use Cases Grid (Use Case Pages) */
.usecases {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.usecase {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
}

.usecase__icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.usecase__icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-accent);
    fill: none;
    stroke-width: 1.5;
}

.usecase__title {
    font-weight: 600;
    margin-bottom: 4px;
}

.usecase__text {
    font-size: 14px;
    color: var(--color-ink-muted);
}

/* CTA Section (Use Case Pages) */
.cta-section {
    text-align: center;
    padding: 100px 0;
    background: var(--color-ink);
    color: white;
}

.cta-section__title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 16px;
}

.cta-section__text {
    color: #a1a1aa;
    font-size: 1.125rem;
    margin-bottom: 32px;
}

.cta-section .btn--primary {
    background: white;
    color: var(--color-ink);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-up {
    animation: fadeUp 0.8s ease forwards;
}

.fade-up-delay-1 { animation-delay: 0.1s; opacity: 0; }
.fade-up-delay-2 { animation-delay: 0.2s; opacity: 0; }
.fade-up-delay-3 { animation-delay: 0.3s; opacity: 0; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .nav__menu {
        display: none;
    }

    .hero__grid,
    .solution__grid,
    .trace__grid,
    .performance__grid,
    .alerts__grid,
    .mobile__grid,
    .hardware__grid,
    .about__grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .hero__image {
        order: -1;
    }

    .problem__layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .problem__content {
        position: static;
        text-align: center;
    }

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

    .hardware__layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hardware__content {
        position: static;
        text-align: center;
    }

    .hardware__specs {
        grid-template-columns: 1fr 1fr;
    }

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

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

    .pricing__calculator {
        padding: 2rem;
    }

    .mobile__steps {
        grid-template-columns: 1fr;
    }

    .dataflow__steps {
        gap: 0.5rem;
    }

    .dataflow__step-box {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }

    .mobile__phones {
        flex-direction: row;
        gap: 1rem;
    }

    .mobile__phone--secondary {
        transform: none;
    }

    .mobile__phone img {
        max-height: 400px;
    }

    .solution__features {
        gap: 1rem;
    }

    .solution__image {
        order: -1;
    }

    .solutions {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 768px) {
    .solutions, .stats {
        grid-template-columns: 1fr;
    }

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

    .solution-card {
        flex-direction: column;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .section {
        padding: 60px 0;
    }

    .nav__back span {
        display: none;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    section {
        padding: 3rem 0;
    }

    .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 3rem;
    }

    .hero__subtitle {
        font-size: 1rem;
    }

    .hero__cta {
        flex-direction: column;
    }

    .hero__cta .btn {
        width: 100%;
        text-align: center;
    }

    .hero__trust {
        flex-direction: column;
        gap: 0.75rem;
    }

    .problem__grid,
    .dashboard__features,
    .solution__features {
        grid-template-columns: 1fr;
    }

    .solution__feature {
        padding: 1.25rem;
    }

    .problem__item {
        padding: 1.25rem;
    }

    .problem__content h2 {
        font-size: 1.5rem;
    }

    .usecases-section__grid {
        grid-template-columns: 1fr;
    }

    .usecase-card__content p {
        white-space: normal;
    }

    .hardware__specs {
        grid-template-columns: 1fr;
    }

    .pricing__calculator {
        padding: 1.5rem;
    }

    .pricing__toggle-btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }

    .pricing__total {
        font-size: 2.5rem;
    }

    .dataflow__steps {
        flex-direction: column;
        align-items: center;
    }

    .dataflow__arrow {
        transform: rotate(90deg);
    }

    .about__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about__values {
        padding-top: 0;
    }

    .closing {
        padding: 4rem 0;
    }

    .closing__cta {
        flex-direction: column;
        align-items: center;
    }

    .closing__cta .btn {
        width: 100%;
    }

    .alerts__stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .alerts__stat {
        padding: 1rem;
    }

    .alerts__stat-value {
        font-size: 1.5rem;
    }

    .mobile__phones {
        flex-direction: column;
        align-items: center;
    }

    .mobile__phone img {
        max-height: 320px;
    }

    .trace__quote {
        padding: 1rem 1.25rem;
    }

    .solution__feature {
        gap: 0.75rem;
    }

    .solution__feature-icon {
        width: 28px;
        height: 28px;
        font-size: 0.875rem;
    }

    .modal {
        padding: 1.5rem;
        margin: 0.5rem;
    }

    .frame {
        padding: 0.5rem;
        border-radius: var(--radius-lg);
    }
}

@media (max-width: 480px) {
    .usecases {
        grid-template-columns: 1fr;
    }

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

    .stat {
        padding: 20px;
    }

    .stat__value {
        font-size: 2rem;
    }

    .stat__label {
        font-size: 13px;
    }

    .hero__cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 380px) {
    .container {
        padding: 0 1rem;
    }

    .alerts__stats {
        grid-template-columns: 1fr;
    }

    .hero__usecases {
        margin-top: 2rem;
        padding-top: 1.5rem;
    }

    .hero__usecase-btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.75rem;
    }

    .lang-btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
    }
}