/* CSS Variables & Design System */
:root {
    --color-bg: #FFFFFF;
    --color-text-primary: #0B0F1A;
    --color-text-secondary: #394150;
    --color-accent: #2563EB;
    --color-accent-hover: #1D4ED8;
    --color-navy: #08162E;
    --color-white: #FFFFFF;

    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;
    --spacing-xxl: 96px;

    --container-width: 1200px;
    --header-height: 80px;
    --header-bg-solid: rgba(255, 255, 255, 0.98);
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

ul {
    list-style: none;
}

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

/* Typography */
h1,
h2,
h3 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

.section-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-text-primary);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 3rem;
    }
}

/* Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    border: 2px solid var(--color-accent);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-accent);
}

.btn-secondary:hover {
    background-color: rgba(37, 99, 235, 0.05);
    color: var(--color-accent);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    background-color: var(--color-navy);
    /* Always Navy */
    display: flex;
    align-items: center;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    /* Subtle shadow for depth */
}

/* Remove .header.scrolled styles as it's now consistent */

.header-container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-white);
    transition: color 0.3s ease;
    z-index: 1001;
}

.logo .separator {
    margin: 0 4px;
    font-weight: 400;
    opacity: 0.7;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
    letter-spacing: 0.01em;
}

.nav-link:hover {
    color: var(--color-white);
}

.nav-link--cta {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 8px 20px;
    border-radius: 6px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-link--cta:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Hamburger Toggle (hidden on desktop) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    margin: 5px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

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

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

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

/* Hero Section */
.hero {
    position: relative;
    width: 100%;
    min-height: 90vh;
    background-color: var(--color-navy);
    display: flex;
    align-items: center;
    color: var(--color-white);
    padding-top: var(--header-height);
    /* Account for fixed header */
    overflow: hidden;
}

#hero-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.6;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    width: 100%;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 1s ease 0.5s forwards;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.1;
    max-width: 800px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    font-weight: 400;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 5rem;
    }

    .hero-subtitle {
        font-size: 1.5rem;
    }
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0.7;
    animation: bounce 2s infinite;
}

.mouse {
    width: 26px;
    height: 42px;
    border: 2px solid #fff;
    border-radius: 14px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.wheel {
    width: 4px;
    height: 8px;
    background-color: #fff;
    border-radius: 2px;
}

/* ============================
   SHARED COMPONENTS
   ============================ */

/* Section Labels */
.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: 40px;
}

.section-label::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 1px;
    background-color: var(--color-accent);
}

.section-label-light {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: rgba(37, 99, 235, 0.7);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-left: 40px;
}

.section-label-light::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 1px;
    background-color: rgba(37, 99, 235, 0.5);
}

.section-title-light {
    font-size: 2.25rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .section-title-light {
        font-size: 3rem;
    }
}

.text-accent {
    color: var(--color-accent);
}

.text-accent-bold {
    color: var(--color-accent);
    font-weight: 600;
}

.text-accent-dark {
    color: var(--color-accent);
}

/* Decorative Grid Lines */
.deco-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.deco-line {
    position: absolute;
    background: rgba(255, 255, 255, 0.03);
}

.deco-line-v1 {
    left: 20%;
    top: 0;
    width: 1px;
    height: 100%;
}

.deco-line-v2 {
    right: 25%;
    top: 0;
    width: 1px;
    height: 100%;
}

.deco-line-h1 {
    left: 0;
    top: 45%;
    width: 100%;
    height: 1px;
}

/* ============================
   PROBLEM SECTION — Dark Navy
   ============================ */
.problem {
    background-color: var(--color-navy);
    position: relative;
    overflow: hidden;
    padding: var(--spacing-xxl) 0 calc(var(--spacing-xxl) + 16px);
}

.problem-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

@media (min-width: 900px) {
    .problem-inner {
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--spacing-xl) * 2);
    }
}

.problem-left {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-lg));
}

.problem-closing-text {
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.15rem;
    margin-top: var(--spacing-lg);
    line-height: 1.6;
}

.problem-right {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.problem-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.problem-item:first-child {
    padding-top: 0;
}

.problem-item:last-child {
    border-bottom: none;
}

.problem-item:hover {
    padding-left: var(--spacing-sm);
}

.problem-item:hover .problem-item-number {
    color: var(--color-accent);
}

.problem-item-number {
    font-size: 0.85rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.2);
    letter-spacing: 0.05em;
    flex-shrink: 0;
    width: 32px;
    transition: color 0.3s ease;
    font-variant-numeric: tabular-nums;
    padding-top: 2px;
}

.problem-item p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1.1rem;
    line-height: 1.5;
    margin: 0;
}

/* ============================
   METHOD SECTION — Timeline
   ============================ */
.method {
    background-color: var(--color-white);
    position: relative;
    padding: var(--spacing-xxl) 0;
}

.method-header {
    margin-bottom: calc(var(--spacing-xl) + var(--spacing-md));
    max-width: 600px;
}

/* Timeline Layout */
.timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.timeline-step {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: var(--spacing-lg);
    position: relative;
}

@media (min-width: 768px) {
    .timeline-step {
        grid-template-columns: 80px 1fr;
        gap: var(--spacing-xl);
    }
}

/* Timeline Marker */
.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.timeline-dot {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-navy);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
    flex-shrink: 0;
}

.timeline-dot span {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-white);
    letter-spacing: 0.05em;
}

.timeline-connector {
    width: 2px;
    flex-grow: 1;
    background: linear-gradient(to bottom, var(--color-navy), rgba(8, 22, 46, 0.1));
    min-height: 40px;
}

.timeline-step--last .timeline-connector {
    display: none;
}

/* Timeline Card */
.timeline-card {
    background-color: #fafbfd;
    border: 1px solid rgba(8, 22, 46, 0.06);
    border-radius: 8px;
    padding: var(--spacing-lg) calc(var(--spacing-lg) + 8px);
    margin-bottom: var(--spacing-lg);
    position: relative;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-card:hover {
    border-color: rgba(37, 99, 235, 0.15);
    box-shadow: 0 8px 32px rgba(8, 22, 46, 0.06);
    transform: translateX(4px);
}

/* Left accent line on card */
.timeline-card::before {
    content: "";
    position: absolute;
    left: 0;
    top: 24px;
    bottom: 24px;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    border-radius: 4px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timeline-card:hover::before {
    opacity: 1;
}

.timeline-card-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
}

.timeline-intro {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.timeline-details {
    margin-bottom: var(--spacing-md);
}

.detail-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    padding-bottom: 4px;
    border-bottom: 2px solid rgba(37, 99, 235, 0.2);
}

.timeline-details ul {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

@media (min-width: 600px) {
    .timeline-details ul {
        grid-template-columns: 1fr 1fr;
    }
}

.timeline-details li {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    padding-left: 16px;
    position: relative;
}

.timeline-details li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: rgba(37, 99, 235, 0.3);
}

/* Timeline Result */
.timeline-result {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 6px;
    margin-top: var(--spacing-sm);
}

.result-bar {
    width: 3px;
    min-height: 100%;
    align-self: stretch;
    background-color: var(--color-accent);
    border-radius: 2px;
    flex-shrink: 0;
}

.result-tag {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: 2px;
}

.timeline-result p {
    font-size: 0.95rem;
    color: var(--color-text-primary);
    font-weight: 500;
    margin: 0;
}

/* ============================
   RESULTS SECTION
   ============================ */
.results {
    padding: 0;
}

/* Dark Navy Results Area */
.results-dark {
    background-color: var(--color-navy);
    padding: var(--spacing-xxl) 0;
    position: relative;
    overflow: hidden;
}

.results-header {
    margin-bottom: var(--spacing-xl);
}

.results-metrics {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

@media (min-width: 600px) {
    .results-metrics {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .results-metrics {
        grid-template-columns: repeat(5, 1fr);
        gap: var(--spacing-sm);
    }
}

.metric-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    overflow: hidden;
}

/* Subtle top glow on hover */
.metric-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.metric-card:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(37, 99, 235, 0.2);
    transform: translateY(-4px);
}

.metric-card:hover::after {
    opacity: 1;
}

.metric-icon-wrap {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--color-accent);
    transition: all 0.3s ease;
}

.metric-card:hover .metric-icon-wrap {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 0 24px rgba(37, 99, 235, 0.3);
}

.metric-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
}

.metric-card p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.4;
    margin: 0;
}

/* Case Studies Section */
.cases-section {
    padding: var(--spacing-xxl) 0;
    background-color: #fafbfd;
}

.cases-header {
    margin-bottom: var(--spacing-xl);
}

/* Carousel */
.carousel-container {
    width: 100%;
    overflow: hidden;
    padding: var(--spacing-sm) 0;
    position: relative;
}

.carousel-container::before,
.carousel-container::after {
    content: "";
    position: absolute;
    top: 0;
    width: 120px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.carousel-container::before {
    left: 0;
    background: linear-gradient(to right, #fafbfd, transparent);
}

.carousel-container::after {
    right: 0;
    background: linear-gradient(to left, #fafbfd, transparent);
}

.carousel-track {
    display: flex;
    width: max-content;
    gap: var(--spacing-md);
    animation: scroll 45s linear infinite;
}

.carousel-track:hover {
    animation-play-state: paused;
}

@keyframes scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.case-card {
    background-color: var(--color-white);
    border: 1px solid rgba(8, 22, 46, 0.06);
    border-radius: 8px;
    padding: var(--spacing-lg);
    width: 340px;
    flex-shrink: 0;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.case-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-navy), var(--color-accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.case-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(8, 22, 46, 0.08);
    border-color: transparent;
}

.case-card:hover::before {
    transform: scaleX(1);
}

.case-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-navy);
    background: rgba(8, 22, 46, 0.05);
    padding: 4px 12px;
    border-radius: 4px;
    margin-bottom: var(--spacing-xs);
    align-self: flex-start;
}

.case-location {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    opacity: 0.7;
}

.case-card .case-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    flex-grow: 1;
}

.case-outcome {
    border-top: 1px solid rgba(8, 22, 46, 0.06);
    padding-top: var(--spacing-sm);
    margin-top: auto;
}

.outcome-label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: block;
    margin-bottom: 4px;
}

.case-outcome p {
    font-size: 0.9rem;
    color: var(--color-text-primary);
    font-weight: 500;
    line-height: 1.4;
    margin: 0;
}

/* ============================
   CTA SECTION — Premium
   ============================ */
.cta {
    background: linear-gradient(135deg, var(--color-navy) 0%, #0a1e3d 50%, #0d2847 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: calc(var(--spacing-xxl) + 32px) 0;
}

/* Subtle radial glow */
.cta::before {
    content: "";
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
    position: relative;
}

@media (min-width: 768px) {
    .cta-title {
        font-size: 3rem;
    }
}

.cta-subtitle {
    font-size: 1.15rem;
    max-width: 560px;
    margin: 0 auto var(--spacing-xl);
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
}

.btn-cta-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
    border: 2px solid var(--color-accent);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.05rem;
    font-weight: 600;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-cta-primary:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
    transform: translateY(-2px);
}

.btn-cta-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.25);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 1.05rem;
    font-weight: 500;
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-cta-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--color-white);
}

/* ============================
   FOOTER
   ============================ */
.footer {
    padding: var(--spacing-lg) 0;
    background-color: #060f1f;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-logo {
    font-size: 1.1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: -0.01em;
}

.footer-logo .separator {
    margin: 0 4px;
    font-weight: 400;
    opacity: 0.5;
}

.footer p {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.85rem;
    margin: 0;
}

/* ============================
   ANIMATIONS
   ============================ */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0);
    }

    40% {
        transform: translateY(-10px);
    }

    60% {
        transform: translateY(-5px);
    }
}

/* Subtle pulse for timeline dots */
@keyframes dotPulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.2);
    }

    50% {
        box-shadow: 0 0 0 8px rgba(37, 99, 235, 0);
    }
}

.timeline-step.visible .timeline-dot {
    animation: dotPulse 2.5s ease-in-out 0.5s 1;
}

/* ============================
   MOBILE / RESPONSIVE
   ============================ */

/* Tablet breakpoint */
@media (max-width: 960px) {

    /* Mobile Nav */
    .nav-toggle {
        display: block;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--color-navy);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-lg);
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 1000;
    }

    .nav.open {
        right: 0;
    }

    .nav-link {
        font-size: 1.5rem;
        color: rgba(255, 255, 255, 0.8);
    }

    .nav-link--cta {
        font-size: 1.1rem;
        padding: 12px 32px;
        margin-top: var(--spacing-sm);
    }
}

/* Mobile breakpoint */
@media (max-width: 768px) {
    :root {
        --header-height: 64px;
        --spacing-xxl: 64px;
    }

    /* Typography */
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero .btn {
        font-size: 0.95rem;
        padding: 12px 24px;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-title-light {
        font-size: 1.75rem;
    }

    .cta-title {
        font-size: 1.75rem;
    }

    /* Problem Section */
    .problem-left {
        position: static;
    }

    .problem-closing-text {
        font-size: 1rem;
    }

    .problem-item p {
        font-size: 1rem;
    }

    /* Method Timeline */
    .timeline-step {
        grid-template-columns: 44px 1fr;
        gap: var(--spacing-sm);
    }

    .timeline-dot {
        width: 40px;
        height: 40px;
    }

    .timeline-card {
        padding: var(--spacing-md);
    }

    .timeline-card-header h3 {
        font-size: 1.25rem;
    }

    .timeline-intro {
        font-size: 1rem;
    }

    .timeline-details ul {
        grid-template-columns: 1fr;
    }

    /* Results */
    .results-metrics {
        grid-template-columns: 1fr;
    }

    .metric-card {
        padding: var(--spacing-md);
    }

    /* Carousel */
    .carousel-track {
        animation-duration: 25s;
    }

    .case-card {
        width: 280px;
        padding: var(--spacing-md);
    }

    /* CTA */
    .cta {
        padding: var(--spacing-xxl) 0;
    }

    .cta-subtitle {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .btn-cta-primary,
    .btn-cta-secondary {
        width: 100%;
        max-width: 320px;
        text-align: center;
    }

    /* Footer */
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
}

/* Small mobile */
@media (max-width: 420px) {
    .hero-title {
        font-size: 1.75rem;
    }

    .section-title-light {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .timeline-step {
        grid-template-columns: 36px 1fr;
        gap: 8px;
    }

    .timeline-dot {
        width: 36px;
        height: 36px;
    }

    .timeline-dot span {
        font-size: 0.7rem;
    }

    .case-card {
        width: 260px;
    }
}

/* ============================
   REDUCED MOTION
   ============================ */
@media (prefers-reduced-motion: reduce) {

    *,
    ::before,
    ::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .carousel-track {
        animation: none;
        flex-wrap: nowrap;
        overflow-x: auto;
    }
}