:root {
    /* Color Palette */
    --primary-purple: #6c5ce7;
    --primary-green: #00b894;
    --primary-orange: #e17055;

    --bg-gradient-light: radial-gradient(circle at 10% 20%, rgba(108, 92, 231, 0.2) 0%, transparent 40%),
                         radial-gradient(circle at 90% 80%, rgba(0, 184, 148, 0.2) 0%, transparent 40%),
                         radial-gradient(circle at 50% 50%, rgba(225, 112, 85, 0.1) 0%, transparent 60%);

    --bg-gradient-dark: radial-gradient(circle at 10% 20%, rgba(108, 92, 231, 0.15) 0%, transparent 40%),
                        radial-gradient(circle at 90% 80%, rgba(0, 184, 148, 0.15) 0%, transparent 40%),
                        radial-gradient(circle at 50% 50%, rgba(225, 112, 85, 0.05) 0%, transparent 60%);

    /* Light Theme Defaults */
    --bg-color: #ffffff;
    --text-color: #2d3436;
    --card-bg: rgba(255, 255, 255, 0.8);
    --dropdown-bg: rgba(255, 255, 255, 0.96);
    --card-border: rgba(0, 0, 0, 0.05);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);

    --mobile-nav-bg: rgba(255, 255, 255, 0.85);
    --nav-scrolled-bg: rgba(255, 255, 255, 0.85);

    --light-bg-opacity: 1;
    --dark-bg-opacity: 0;
    --sun-opacity: 1;
    --sun-transform: translate(-50%, -50%) rotate(0deg);
    --moon-opacity: 0;
    --moon-transform: translate(-50%, -50%) rotate(90deg);

    --nav-height: 80px;
}

/* System Dark Mode Preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-color: #1a1a1a;
        --text-color: #dfe6e9;
        --card-bg: rgba(255, 255, 255, 0.05);
        --dropdown-bg: rgba(26, 26, 26, 0.94);
        --card-border: rgba(255, 255, 255, 0.1);
        --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);

        --mobile-nav-bg: rgba(26, 26, 26, 0.85);
        --nav-scrolled-bg: rgba(26, 26, 26, 0.85);

        --light-bg-opacity: 0;
        --dark-bg-opacity: 1;
        --sun-opacity: 0;
        --sun-transform: translate(-50%, -50%) rotate(90deg);
        --moon-opacity: 1;
        --moon-transform: translate(-50%, -50%) rotate(0deg);
    }
}

/* Explicit Theme Overrides (Manual Toggle) */
[data-theme="light"] {
    --bg-color: #ffffff;
    --text-color: #2d3436;
    --card-bg: rgba(255, 255, 255, 0.8);
    --dropdown-bg: rgba(255, 255, 255, 0.96);
    --card-border: rgba(0, 0, 0, 0.05);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    --mobile-nav-bg: rgba(255, 255, 255, 0.85);
    --nav-scrolled-bg: rgba(255, 255, 255, 0.85);
    --light-bg-opacity: 1;
    --dark-bg-opacity: 0;
    --sun-opacity: 1;
    --sun-transform: translate(-50%, -50%) rotate(0deg);
    --moon-opacity: 0;
    --moon-transform: translate(-50%, -50%) rotate(90deg);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #dfe6e9;
    --card-bg: rgba(255, 255, 255, 0.05);
    --dropdown-bg: rgba(26, 26, 26, 0.94);
    --card-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --mobile-nav-bg: rgba(26, 26, 26, 0.85);
    --nav-scrolled-bg: rgba(26, 26, 26, 0.85);
    --light-bg-opacity: 0;
    --dark-bg-opacity: 1;
    --sun-opacity: 0;
    --sun-transform: translate(-50%, -50%) rotate(90deg);
    --moon-opacity: 1;
    --moon-transform: translate(-50%, -50%) rotate(0deg);
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.5s ease, color 0.5s ease;
    overflow-x: hidden;
    line-height: 1.6;
}

main {
    padding-top: calc(var(--nav-height) + 1rem);
}

/* Background Gradients */
body::before,
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    transition: opacity 0.5s ease;
}

body::before {
    background: var(--bg-gradient-light);
    opacity: var(--light-bg-opacity);
}

body::after {
    background: var(--bg-gradient-dark);
    opacity: var(--dark-bg-opacity);
}

/* Header */
header {
    height: var(--nav-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    position: fixed;
    left: 0;
    right: 0;
    width: calc(100% - 2rem);
    max-width: 1200px;
    margin: 0 auto;
    top: 1rem;
    z-index: 100;
    background: transparent;
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 9999px;
    box-shadow: var(--glass-shadow);
    transition: box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease, backdrop-filter 0.3s ease;
}

header.scrolled {
    background: var(--nav-scrolled-bg);
    backdrop-filter: blur(20px);
}


.logo {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 1px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    width: 1.5rem;
    height: 1.5rem;
    flex-shrink: 0;
}

.logo-text {
    background: linear-gradient(45deg, var(--primary-purple), var(--primary-orange));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

#theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background 0.3s;
    color: var(--text-color);
}

#theme-toggle:hover,
#theme-toggle:focus-visible {
    background: rgba(128, 128, 128, 0.1);
}

#theme-toggle:active {
    transform: scale(0.95);
}

.icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s, transform 0.5s;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.25rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: color 0.3s;
    font-family: 'Montserrat', sans-serif;
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--primary-purple);
}

.nav-links a:active {
    transform: translateY(1px);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    border-radius: 8px;
    transition: background 0.3s, transform 0.2s;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
    background: rgba(128, 128, 128, 0.1);
}

.nav-toggle:active {
    transform: scale(0.95);
}

.nav-toggle-bar {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-color);
    transition: transform 0.3s ease, opacity 0.3s ease;
    transform-origin: center;
}

.nav-open .nav-toggle-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-open .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}

.nav-open .nav-toggle-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.moon {
    opacity: var(--moon-opacity);
    transform: var(--moon-transform);
}

.sun {
    opacity: var(--sun-opacity);
    transform: var(--sun-transform);
}

/* Hero Section */
.hero {
    min-height: calc(100vh - var(--nav-height));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    width: 100%;
    position: relative;
}

.hero.small {
    min-height: 60vh;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    padding: 0 2rem;
}

.hero-content {
    text-align: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.hero-content.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.hero-content h1 {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    margin-bottom: 1rem;
    line-height: 1.2;
    background: linear-gradient(90deg, var(--text-color), var(--primary-purple));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-content .subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.8;
}

.cta-button {
    text-decoration: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border: none;
    border-radius: 50px;
    background: linear-gradient(45deg, var(--primary-purple), var(--primary-orange));
    color: white;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    font-weight: 600;
}

.cta-button:hover,
.cta-button:focus-visible {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(108, 92, 231, 0.4);
}

.cta-button:active {
    transform: translateY(-1px);
    box-shadow: 0 5px 10px rgba(108, 92, 231, 0.4);
}

/* Hero Shapes */
.hero-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    z-index: -1;
    opacity: 0.6;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--primary-purple);
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--primary-green);
    bottom: 20%;
    right: 10%;
    animation-delay: -5s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    background: var(--primary-orange);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    33% { transform: translate(30px, -50px); }
    66% { transform: translate(-20px, 20px); }
}

/* Content Sections */
.content-section {
    padding: 5rem 10%;
}

.content-section h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-align: center;
}

.section-intro {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 3rem auto;
    font-size: 1.1rem;
    opacity: 0.75;
    line-height: 1.7;
}

.hero-intro {
    max-width: 560px;
    margin: 0 auto 2rem auto;
    font-size: 1.05rem;
    opacity: 0.7;
    line-height: 1.7;
}

/* Cards */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

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

.card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    border: 1px solid var(--card-border);
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(5px);
    transform: translateZ(0);
    transform-style: preserve-3d;
    backface-visibility: hidden;
    /* ⚡ Bolt: Removed static will-change: transform. It permanently allocates VRAM. Applied dynamically via JS on pointerenter. */
    transition: transform 0.3s;
    cursor: default;
}

a.card {
    text-decoration: none;
    color: inherit;
    display: block;
    cursor: pointer;
}

.card:hover,
.card:focus-visible {
    transform: translateY(-10px) translateZ(0);
}

.card h3 {
    margin-bottom: 1rem;
    color: var(--primary-purple);
}

/* Quote */
.interactive-quote {
    text-align: center;
    font-size: 1.5rem;
    font-style: italic;
    font-family: 'Playfair Display', serif;
}

.interactive-quote blockquote {
    max-width: 800px;
    margin: 0 auto 1.5rem auto;
    position: relative;
}

.interactive-quote blockquote::before {
    content: '"';
    font-size: 5rem;
    position: absolute;
    top: -30px;
    left: -40px;
    color: var(--primary-green);
    opacity: 0.2;
}

.interactive-quote cite {
    font-size: 1rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    color: var(--primary-orange);
}

/* Steps */
.step-list {
    list-style: none;
}

.step {
    display: flex;
    align-items: center;
    flex-direction: column;
    text-align: center;
    margin-bottom: 3rem;
    opacity: 0; /* Animated in JS */
    transform: translateY(20px);
    transition: opacity 0.6s, transform 0.6s;
}

.step.visible {
    opacity: 1;
    transform: translateY(0);
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 2px var(--primary-purple);
    margin-right: 0;
    margin-bottom: 1rem;
    font-family: 'Playfair Display', serif;
}

.step-content h3 {
    margin-bottom: 0.5rem;
}

/* Screen Time Chart */
.screen-time-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.donut-wrapper {
    position: relative;
    width: 240px;
    height: 240px;
}

.donut-chart {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.donut-track {
    fill: none;
    stroke: var(--card-border);
    stroke-width: 16;
}

.donut-fill {
    fill: none;
    stroke: url(#donut-gradient);
    stroke-width: 16;
    stroke-linecap: round;
    stroke-dasharray: 502.65;
    stroke-dashoffset: 502.65;
}

.donut-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.donut-value {
    line-height: 1;
    margin-bottom: 0.25rem;
}

.donut-number {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-purple), var(--primary-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.donut-symbol {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, var(--primary-purple), var(--primary-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.donut-text {
    font-size: 0.8rem;
    opacity: 0.7;
    line-height: 1.3;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    width: 100%;
    max-width: 700px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem 1rem;
    text-align: center;
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(5px);
}

.stat-value {
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-purple);
}

.stat-suffix {
    font-family: 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-purple);
}

.stat-label {
    font-size: 0.85rem;
    opacity: 0.7;
    line-height: 1.4;
}

.screen-time .donut-wrapper,
.screen-time .stat-cards {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.screen-time .stat-cards {
    transition-delay: 0.2s;
}

.screen-time.visible .donut-wrapper,
.screen-time.visible .stat-cards {
    opacity: 1;
    transform: translateY(0);
}

/* Next Step CTA */
.next-step {
    text-align: center;
}

.next-step-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.next-step-links .cta-button {
    display: inline-block;
}

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

.cta-secondary:hover,
.cta-secondary:focus-visible {
    background: var(--primary-purple);
    color: white;
}

.cta-secondary:active {
    transform: translateY(-1px);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--card-border);
    margin-top: 2rem;
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        position: sticky;
        top: 0;
        width: 100%;
        max-width: none;
        margin: 0;
        padding: 0 1rem;
        border-radius: 0;
        border: none;
        background: var(--mobile-nav-bg);
        backdrop-filter: blur(14px);
    }
    nav {
        position: static;
        width: 100%;
        max-height: 0;
        background: var(--mobile-nav-bg);
        border-top: none;
        transform: none;
        opacity: 1;
        pointer-events: none;
        visibility: visible;
        transition: none;
        overflow: hidden;
        padding-top: 0;
        z-index: 5;
    }
    .nav-animate nav {
        transition: max-height 0.3s ease;
    }
    .nav-open {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: 100vh; /* fallback for browsers without dvh support */
        height: 100dvh;
        overflow: hidden;
        flex-wrap: wrap;
        align-content: flex-start;
        border-radius: 0;
        border: none;
        box-shadow: none;
    }
    .nav-open .logo {
        order: 1;
        height: var(--nav-height);
        display: flex;
        align-items: center;
    }
    .nav-open .header-controls {
        order: 2;
        height: var(--nav-height);
        display: flex;
        align-items: center;
    }
    .nav-open nav {
        order: 3;
        flex-basis: calc(100% + 2rem);
        margin-left: -1rem;
        margin-right: -1rem;
        max-height: calc(100vh - var(--nav-height)); /* fallback for browsers without dvh support */
        max-height: calc(100dvh - var(--nav-height));
        min-height: calc(100vh - var(--nav-height)); /* fallback for browsers without dvh support */
        min-height: calc(100dvh - var(--nav-height));
        overflow-y: auto;
        overflow-x: hidden;
        pointer-events: auto;
        padding-top: 0.25rem;
    }
    .nav-closing {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        overflow: hidden;
        border-radius: 0;
        border: none;
        box-shadow: none;
    }
    .nav-closing nav {
        pointer-events: none;
    }
    .nav-links {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem 1.5rem 2.5rem;
        gap: 0.5rem;
        font-size: 1.2rem;
        width: 100%;
    }

    .nav-links > li {
        width: 100%;
    }

    .nav-links a {
        display: block;
        width: 100%;
        padding: 1rem 0;
    }

    .nav-dropdown {
        width: 100%;
    }

    .nav-dropdown-toggle {
        width: 100%;
        justify-content: space-between;
        font-size: 1.2rem;
        padding: 1rem 0;
    }

    .nav-dropdown-menu {
        position: static;
        transform: none;
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        background: none;
        border: none;
        border-top: 1px solid var(--card-border);
        border-radius: 0;
        box-shadow: none;
        backdrop-filter: none;
        padding: 0;
        min-width: unset;
        width: 100%;
        display: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.2s ease;
    }

    .nav-dropdown[data-open="true"] .nav-dropdown-menu {
        display: block;
        max-height: 1000px;
        padding: 0.25rem 0 0.5rem;
        overflow: visible;
    }

    .dropdown-arrow {
        display: inline-block;
        width: 18px;
        height: 18px;
    }

    .nav-dropdown-menu a {
        font-size: 1rem;
        padding: 0.85rem 0;
    }
    .nav-toggle {
        display: flex;
    }

    .nav-open .nav-toggle {
        transform: scale(1.06);
    }
    .header-controls {
        margin-left: auto;
    }
    .logo {
        font-size: 1.2rem;
    }
    .logo-icon {
        width: 1.2rem;
        height: 1.2rem;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .content-section {
        padding: 3rem 5%;
    }
    .step {
        flex-direction: column;
        text-align: center;
    }
    .step-number {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    .stat-cards {
        grid-template-columns: 1fr;
        max-width: 300px;
    }
    .section-intro {
        font-size: 1rem;
        padding: 0 1rem;
    }
    .hero-intro {
        font-size: 0.95rem;
        padding: 0 1rem;
    }
    .next-step-links {
        flex-direction: column;
        align-items: center;
    }
    #pillars .cards {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    .step-marker[aria-pressed="false"] {
        animation: none;
    }
    header,
    header.scrolled {
        transition: none;
    }
    .hero-content {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .screen-time .donut-wrapper,
    .screen-time .stat-cards {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .donut-fill {
        transition: none;
    }
}

/* Accessibility - Skip to Content */
.skip-to-content {
    position: absolute;
  top: 0;
    left: 50%;
  transform: translateX(-50%) translateY(-100%);
    background: var(--primary-purple);
    color: white;
    padding: 1rem 2rem;
    z-index: 1000;
    text-decoration: none;
    border-radius: 0 0 10px 10px;
    font-weight: bold;
  transition: transform 0.3s ease;
}

.skip-to-content:focus {
  transform: translateX(-50%) translateY(0);
    outline: 2px solid var(--primary-orange);
}

/* Accessibility - Utilities */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Accessibility - Focus Visibility */
:focus-visible {
    outline: 2px solid var(--primary-purple);
    outline-offset: 2px;
}

/* Active Navigation State */
.nav-links a[aria-current="page"],
.nav-links a.active {
    color: var(--primary-purple);
    position: relative;
}

.nav-links a[aria-current="page"]::after,
.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-purple);
    border-radius: 2px;
    transform: scaleX(1);
    transition: transform 0.3s ease;
}

/* Dropdown Navigation */
.nav-dropdown {
    position: relative;
}

.nav-dropdown::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    height: 0.9rem;
}

.nav-dropdown-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    font-size: inherit;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0;
    transition: color 0.3s;
    line-height: inherit;
}

.nav-dropdown-toggle:hover,
.nav-dropdown-toggle:focus-visible {
    color: var(--primary-purple);
}

.nav-dropdown-toggle:active {
    transform: translateY(1px);
}

.dropdown-arrow {
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown[data-open="true"] .dropdown-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    list-style: none;
}

@media (min-width: 769px) {
    .nav-dropdown-menu {
        position: absolute;
        top: calc(100% + 0.35rem);
        left: 50%;
        transform: translateX(-50%) translateY(-6px);
        background: var(--dropdown-bg);
        backdrop-filter: blur(12px);
        border: 1px solid var(--card-border);
        border-radius: 12px;
        box-shadow: var(--glass-shadow);
        padding: 0.4rem;
        min-width: 148px;
        opacity: 0;
        pointer-events: none;
        visibility: hidden;
        transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
        z-index: 200;
    }

    .nav-dropdown:hover .nav-dropdown-menu,
    .nav-dropdown[data-open="true"] .nav-dropdown-menu {
        opacity: 1;
        pointer-events: auto;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }
}

.nav-dropdown-menu a {
    display: block;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible {
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary-purple);
}

.nav-dropdown-menu a[aria-current="page"],
.nav-dropdown-menu a.active {
    color: var(--primary-purple);
}

/* Highlight dropdown toggle when a child page is active */
.nav-dropdown.dropdown-active .nav-dropdown-toggle {
    color: var(--primary-purple);
    position: relative;
}

.nav-dropdown.dropdown-active .nav-dropdown-toggle::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-purple);
    border-radius: 2px;
}

/* Pillar cards (clickable) */
.pillar-card h3 {
    transition: color 0.3s;
}

.pillar-card:hover h3,
.pillar-card:focus-visible h3 {
    color: var(--primary-orange);
}

/* Accessibility - Remove outline for non-interactive scroll targets */
[tabindex="-1"]:focus {
    outline: none;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease, background 0.3s ease, box-shadow 0.3s ease, visibility 0.3s ease;

    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    box-shadow: var(--glass-shadow);
    color: var(--primary-purple);
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
    background: var(--bg-color);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.2);
    transform: translateY(-3px);
}

.back-to-top:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px 0 rgba(31, 38, 135, 0.2);
}

.back-to-top:focus-visible {
    outline: 2px solid var(--primary-purple);
    outline-offset: 2px;
}

/* Interactive Step Marker */
.step-marker {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    margin: 0 0 1rem 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--card-border);
    transition: transform 0.2s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.step-marker[aria-pressed="false"] {
    animation: pulse-ring 2s infinite;
}

@keyframes pulse-ring {
    0% {
        box-shadow: 0 0 0 2px var(--card-border), 0 0 0 0 rgba(108, 92, 231, 0.4);
    }
    70% {
        box-shadow: 0 0 0 2px var(--card-border), 0 0 0 10px rgba(108, 92, 231, 0);
    }
    100% {
        box-shadow: 0 0 0 2px var(--card-border), 0 0 0 0 rgba(108, 92, 231, 0);
    }
}

.step-marker .step-number {
    margin-bottom: 0;
}

.step-marker:hover,
.step-marker:focus-visible {
    transform: scale(1.1);
}

.step-marker:active {
    transform: scale(1.05);
}

.step-marker:focus-visible {
    outline: 2px solid var(--primary-purple);
    outline-offset: 4px;
    border-radius: 50%;
}

.step-marker[aria-pressed="true"]:focus-visible {
    outline-color: var(--primary-green);
}

.step-marker[aria-pressed="true"] {
    box-shadow: 0 0 0 2px var(--primary-green);
    background-color: rgba(0, 184, 148, 0.1);
}

.step-check {
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary-green);
    font-family: 'Playfair Display', serif;
    line-height: 1;
    display: none;
}

.step-marker[aria-pressed="true"] .step-check {
    display: block;
    animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.step-marker[aria-pressed="true"] .step-number {
    display: none;
}

.step-marker[aria-pressed="true"] + .step-content {
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.step-marker[aria-pressed="true"] + .step-content h3 {
    text-decoration: line-through;
    color: var(--primary-green);
    transition: color 0.3s ease;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(0.5);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================================
   Crisis Stats Dashboard — Tabbed Section
   ============================================================ */

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: calc(0.65rem + 2px) calc(1.6rem + 2px);
    border-radius: 50px;
    border: none;
    box-shadow: 0 0 0 2px var(--card-border);
    background: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.03em;
    backdrop-filter: blur(5px);
    transition: color 0.3s ease, background 0.3s ease,
                box-shadow 0.3s ease, transform 0.2s ease;
}

.tab-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
    stroke-width: 2;
}

.tab-btn:hover,
.tab-btn:focus-visible {
    box-shadow: 0 0 0 2px var(--primary-purple);
    color: var(--primary-purple);
    transform: translateY(-2px);
}

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

.tab-btn[aria-selected="true"] {
    background: linear-gradient(45deg, var(--primary-purple), var(--primary-orange));
    color: white;
    box-shadow: 0 4px 18px rgba(108, 92, 231, 0.4);
}

/* Tab Panels */
.tab-panel[hidden] {
    display: none;
}

/* Panel entry animation */
@keyframes panelSlideIn {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

.tab-panel.panel-entering {
    animation: panelSlideIn 0.38s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* ============================================================
   Cost Stat Cards Grid
   ============================================================ */
.cost-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.cost-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem 1.25rem 1.75rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    box-shadow: var(--glass-shadow);
    backdrop-filter: blur(6px);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    /* Start hidden; JS reveals on scroll */
    opacity: 0;
    transform: translateY(18px);
}

.cost-card.cost-card--visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.55s ease, transform 0.55s ease,
                box-shadow 0.3s ease, border-color 0.3s ease;
}

.cost-card:hover,
.cost-card:focus-visible {
    transform: translateY(-5px);
    box-shadow: 0 16px 48px rgba(108, 92, 231, 0.15);
    border-color: rgba(108, 92, 231, 0.2);
}

/* Visualization container */
.cost-card-viz {
    position: relative;
    width: 108px;
    height: 108px;
    flex-shrink: 0;
}

/* ============================================================
   Mini Donut Chart
   ============================================================ */
.mini-donut {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
    overflow: visible;
}

.mini-donut-track {
    fill: none;
    stroke: var(--card-border);
    stroke-width: 9;
}

.mini-donut-fill {
    fill: none;
    stroke-width: 9;
    stroke-linecap: round;
    /* circumference for r=38: 2π×38 ≈ 238.76 */
    stroke-dasharray: 238.76;
    stroke-dashoffset: 238.76; /* hidden until animated */
}

/* ============================================================
   Dot Grid (for "1 in N" stats)
   ============================================================ */
.dot-grid {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.dot {
    transition: opacity 0.4s ease;
}

.dot--dim {
    fill: var(--text-color);
    opacity: 0.12;
}

.dot--lit {
    opacity: 1;
}

.dot--purple { fill: #6c5ce7; }
.dot--orange { fill: #e17055; }
.dot--green  { fill: #00b894; }

/* ============================================================
   Stat Number inside cost card
   ============================================================ */
.cost-card-stat {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 2.6rem;
    line-height: 1;
    background: linear-gradient(135deg, var(--text-color), var(--primary-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: baseline;
    gap: 0.1rem;
}

.cost-card-stat .stat-number {
    /* Inherits gradient from parent */
    font-size: inherit;
    font-family: inherit;
    font-weight: inherit;
    color: transparent;
}

.cost-card-stat .stat-suffix {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    -webkit-text-fill-color: transparent;
}

.cost-card-stat .stat-prefix {
    font-size: 1.1rem;
}

.cost-card-label {
    font-size: 0.82rem;
    line-height: 1.5;
    opacity: 0.75;
    max-width: 160px;
    margin: 0;
}

/* ============================================================
   Responsive overrides for cost grid
   ============================================================ */
@media (max-width: 960px) {
    .cost-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .cost-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .cost-card {
        padding: 1.5rem 0.9rem 1.25rem;
        border-radius: 18px;
    }

    .cost-card-viz {
        width: 86px;
        height: 86px;
    }

    .cost-card-stat {
        font-size: 2rem;
    }

    .cost-card-stat .stat-suffix,
    .cost-card-stat .stat-prefix {
        font-size: 0.9rem;
    }

    .cost-card-label {
        font-size: 0.75rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .cost-card {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .cost-card.cost-card--visible {
        transition: none;
    }
    .mini-donut-fill {
        transition: none;
    }
    /* Disable scroll exit fade effect for users who prefer reduced motion */
    main > * {
        filter: none !important;
    }
}

/* Print Styles */
@media print {
    /* Hide non-essential elements */
    header,
    footer,
    .skip-to-content,
    #theme-toggle,
    .nav-toggle,
    .header-controls,
    .hero-shapes,
    #back-to-top,
    .next-step-links,
    .step-marker {
        display: none !important;
    }

    /* Reset layout and colors for print */
    body {
        background: white !important;
        color: black !important;
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    /* Remove background gradients */
    body::before,
    body::after {
        display: none !important;
    }

    main {
        padding-top: 0 !important;
        margin: 0 !important;
    }

    /* Clear scroll exit fade filters for clean printing */
    main > * {
        filter: none !important;
        will-change: auto !important;
    }

    /* Expand content width */
    .hero,
    .content-section,
    .hero.small {
        min-height: auto !important;
        padding: 1rem 0 !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    /* Ensure text is readable */
    h1, h2, h3, p, li {
        color: black !important;
        text-shadow: none !important;
    }

    /* Improve card layout for print */
    .cards {
        display: block !important;
    }

    .card {
        border: 1px solid #ccc !important;
        box-shadow: none !important;
        margin-bottom: 1rem !important;
        break-inside: avoid !important;
        background: white !important;
        color: black !important;
        transform: none !important;
    }

    /* Reveal URLs for external links */
    a[href^="http"]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        word-break: break-all;
    }

    /* Ensure steps don't break awkwardly */
    .step {
        break-inside: avoid !important;
        page-break-inside: avoid !important;
        opacity: 1 !important;
        transform: none !important;
    }

    /* Adjust chart visibility if needed, or hide it if complex */
    .screen-time .donut-wrapper {
        display: none !important; /* Charts often don't print well */
    }

    /* Ensure all text is visible */
    .hero-content, .step, .screen-time .stat-cards {
        opacity: 1 !important;
        transform: none !important;
    }
}