/* ============================================
   Opportunity Island Falls - Main Stylesheet
   ============================================ */

/* --- CSS Variables / Design Tokens --- */
:root {
    /* Colors */
    --color-primary: #1a3a5c;
    --color-primary-dark: #0f2540;
    --color-primary-light: #2a5a8c;
    --color-gold: #d4af37;
    --color-gold-dark: #b8941e;
    --color-success: #2d5016;
    --color-error: #c0392b;
    --color-warning: #e67e22;
    --color-white: #ffffff;
    --color-gray-50: #f9fafb;
    --color-gray-100: #f3f4f6;
    --color-gray-200: #e5e7eb;
    --color-gray-300: #d1d5db;
    --color-gray-500: #6b7280;
    --color-gray-700: #374151;
    --color-gray-900: #111827;
    --color-dark: #0a0f1a;

    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-display: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-gray-700);
    background: var(--color-white);
    overflow-x: hidden;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--color-gray-900);
    line-height: 1.3;
    font-weight: 700;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.125rem; }

p {
    margin-bottom: var(--spacing-md);
}

ul {
    padding-left: var(--spacing-lg);
}

strong {
    font-weight: 700;
}

/* --- Layout --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-light {
    background: var(--color-gray-50);
}

.section-dark {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    color: var(--color-white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--color-white);
}

.section-dark p {
    color: rgba(255, 255, 255, 0.85);
}

.section-accent {
    background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-gray-100) 100%);
}

/* --- Section Header --- */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-gold-dark);
    background: rgba(212, 175, 55, 0.1);
    padding: 0.35rem 1rem;
    border-radius: 20px;
    margin-bottom: var(--spacing-md);
}

.section-dark .section-label {
    color: var(--color-gold);
    background: rgba(212, 175, 55, 0.15);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--color-gray-500);
    max-width: 700px;
    margin: 0 auto;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.75);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease, backdrop-filter 0.3s ease;
    padding: var(--spacing-md) 0;
}

.nav.scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-white);
    transition: color 0.3s ease;
}

.nav.scrolled .nav-logo {
    color: var(--color-gray-900);
}

.nav-logo-img {
    height: 36px;
    width: auto;
}

.nav-logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text {
    font-weight: 700;
    font-size: 1.1rem;
}

.logo-subtitle {
    font-size: 0.7rem;
    font-weight: 400;
    opacity: 0.7;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0;
    margin: 0;
}

.nav-menu li a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    line-height: 1.2;
    font-size: 0.875rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-md);
    transition: color 0.2s ease, background 0.2s ease;
}

.nav-menu li a:hover {
    color: var(--color-white);
    background: rgba(255, 255, 255, 0.1);
}

.nav.scrolled .nav-menu li a {
    color: var(--color-gray-700);
}

.nav.scrolled .nav-menu li a:hover {
    color: var(--color-primary);
    background: rgba(26, 58, 92, 0.05);
}

.nav-login-btn {
    background: var(--color-gold) !important;
    color: var(--color-primary-dark) !important;
    font-weight: 600 !important;
    padding: 0.5rem 1.25rem !important;
    border-radius: var(--radius-md) !important;
    transition: background 0.2s ease, transform 0.2s ease !important;
}

.nav-login-btn:hover {
    background: var(--color-gold-dark) !important;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: background 0.3s ease, transform 0.3s ease, opacity 0.3s ease;
    border-radius: 2px;
}

.nav.scrolled .nav-toggle span {
    background: var(--color-gray-900);
}

/* --- Hero --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #0f2540 0%, #1a3a5c 40%, #2a5a8c 100%);
}

.hero-background {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(42, 90, 140, 0.15) 0%, transparent 50%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-4xl) var(--spacing-xl);
    text-align: center;
}

.hero-quote {
    margin-bottom: var(--spacing-2xl);
}

.hero-title {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.hero-title-main {
    font-size: clamp(1.75rem, 4.5vw, 3rem);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.25;
}

.hero-title-author {
    font-size: 1rem;
    font-weight: 400;
    color: var(--color-gold);
    letter-spacing: 0.05em;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-body);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all 0.25s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--color-gold);
    color: var(--color-primary-dark);
}

.btn-primary:hover {
    background: var(--color-gold-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.35);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.section-light .btn-secondary,
.section-accent .btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.section-light .btn-secondary:hover,
.section-accent .btn-secondary:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

/* --- Content Cards --- */
.content-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
}

.section-dark .content-card {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(255, 255, 255, 0.1);
}

.lead-text {
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.highlight-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    text-align: center;
    padding: var(--spacing-lg);
    border-left: 4px solid var(--color-gold);
    background: rgba(212, 175, 55, 0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.section-dark .highlight-text {
    color: var(--color-white);
    background: rgba(212, 175, 55, 0.1);
}

/* --- Two Column --- */
.two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
}

/* --- Callout --- */
.callout {
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
}

.callout-primary {
    background: rgba(26, 58, 92, 0.06);
    border-left: 4px solid var(--color-primary);
}

.callout-warning {
    background: rgba(230, 126, 34, 0.06);
    border-left: 4px solid var(--color-warning);
}

/* --- Benefits Grid --- */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.benefit-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.benefit-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--spacing-md);
    background: rgba(212, 175, 55, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-gold);
}

.benefit-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.benefit-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
}

/* --- Tabs --- */
.tabs {
    max-width: 960px;
    margin: 0 auto;
}

.tab-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    justify-content: center;
}

.tab-button {
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.65rem 1.5rem;
    background: var(--color-gray-100);
    color: var(--color-gray-500);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.tab-button:hover {
    color: var(--color-primary);
    background: var(--color-gray-200);
}

.tab-button.active {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* --- Parameter Cards --- */
.parameter-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.parameter-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-top: 3px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.parameter-card h3 {
    font-size: 1.15rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.parameter-detail {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-gray-50);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

/* --- Motivation Grid --- */
.motivation-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.motivation-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    position: relative;
}

.motivation-number {
    position: absolute;
    top: -12px;
    left: var(--spacing-lg);
    width: 32px;
    height: 32px;
    background: var(--color-gold);
    color: var(--color-primary-dark);
    font-weight: 700;
    font-size: 0.85rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.motivation-card h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.motivation-card p {
    font-size: 0.9rem;
}

/* --- Building / Property Showcase --- */
.building-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.building-photo {
    width: 100%;
    max-height: 450px;
    object-fit: cover;
}

.building-showcase {
    margin-bottom: var(--spacing-3xl);
}

.building-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.building-stat {
    text-align: center;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gold-dark);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-gray-500);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.building-description p {
    font-size: 1.05rem;
    margin-bottom: var(--spacing-md);
}

/* --- Challenge Section --- */
.challenge-section {
    margin-bottom: var(--spacing-3xl);
}

.challenge-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

.challenge-explanation p {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
}

/* --- Economic Perspective --- */
.economic-perspective h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xl);
}

.definition-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.definition-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.definition-term {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.definition-meaning {
    font-size: 0.9rem;
    color: var(--color-gray-700);
}

.impact-statement {
    font-size: 1.05rem;
    line-height: 1.8;
    padding: var(--spacing-lg);
    background: rgba(26, 58, 92, 0.04);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-primary);
}

/* --- Options Comparison --- */
.options-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
}

.option-card {
    background: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform 0.2s ease;
}

.option-card:hover {
    transform: translateY(-2px);
}

.option-teardown {
    border-top: 4px solid var(--color-error);
}

.option-rebuild {
    border-top: 4px solid var(--color-success);
}

.option-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.option-header h3 {
    font-size: 1.15rem;
}

.option-cost {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-gold-dark);
}

.option-impact {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}

.option-impact.negative {
    background: rgba(192, 57, 43, 0.06);
    border-left: 3px solid var(--color-error);
}

.option-impact.positive {
    background: rgba(45, 80, 22, 0.06);
    border-left: 3px solid var(--color-success);
}

/* --- Analysis Grid --- */
.motivation-analysis {
    margin-bottom: var(--spacing-3xl);
}

.motivation-analysis h3 {
    font-size: 1.35rem;
    margin-bottom: var(--spacing-xl);
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.analysis-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
}

.analysis-verdict {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin: 0 auto var(--spacing-md);
}

.analysis-verdict.negative {
    background: rgba(192, 57, 43, 0.1);
    color: var(--color-error);
}

.analysis-verdict.positive {
    background: rgba(45, 80, 22, 0.1);
    color: var(--color-success);
}

.analysis-card h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.analysis-card p {
    font-size: 0.875rem;
}

/* --- Conclusion Card --- */
.conclusion-card {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.conclusion-card h3 {
    color: var(--color-white);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.conclusion-text {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto;
}

/* --- Benefits List --- */
.rebuild-benefits h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xl);
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.benefit-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.benefit-icon-small {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    background: rgba(45, 80, 22, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.benefit-icon-small svg {
    width: 18px;
    height: 18px;
    color: var(--color-success);
}

.benefit-content h4 {
    margin-bottom: var(--spacing-xs);
}

.benefit-content p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* --- Strategy Steps --- */
.strategy-steps {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.strategy-steps::before {
    content: '';
    position: absolute;
    left: 28px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: rgba(212, 175, 55, 0.3);
}

.step-card {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.step-number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--color-gold);
    color: var(--color-primary-dark);
    font-weight: 700;
    font-size: 1.25rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

.step-content {
    flex: 1;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
}

.step-content h3 {
    font-size: 1.15rem;
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.step-detail {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.65);
    padding-top: var(--spacing-sm);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: var(--spacing-sm);
}

/* --- Call to Action Section --- */
.call-to-action-section {
    text-align: center;
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: rgba(212, 175, 55, 0.08);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(212, 175, 55, 0.15);
}

.call-to-action-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.cta-description {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.85);
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

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

/* --- Footer --- */
.footer {
    background: var(--color-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.footer p {
    font-size: 0.875rem;
    margin-bottom: 0;
}

.footer-brand {
    text-align: right;
}

.footer-logo {
    height: 40px;
    width: auto;
    margin-left: auto;
    margin-bottom: var(--spacing-sm);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
}

/* --- Tools Hero (tools.html) --- */
.tools-hero {
    min-height: 60vh;
    background: linear-gradient(135deg, #060e1a 0%, #0c1e35 40%, #132d4f 100%);
}

.tools-hero .hero-background {
    background:
        linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.2) 100%),
        radial-gradient(circle at 20% 80%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(42, 90, 140, 0.15) 0%, transparent 50%);
}

.tools-hero .hero-title-main {
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.tools-hero .hero-description {
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

/* --- Tool Cards (tools.html) --- */
.tool-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
    border: 2px solid var(--color-gray-200);
    border-top: 3px solid var(--color-primary);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.tool-card:hover {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
    border-top-color: var(--color-primary-dark);
}

.tool-icon {
    width: 70px;
    height: 70px;
    background: var(--color-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.tool-icon svg {
    width: 40px;
    height: 40px;
    color: var(--color-white);
}

.tool-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.tool-card p {
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.tool-features {
    list-style: none;
    margin: var(--spacing-md) 0;
    padding: 0;
}

.tool-features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-gray-700);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.tool-features li::before {
    content: "\2713";
    color: var(--color-success);
    font-weight: 700;
    font-size: 1.2rem;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

/* --- CTA Banner (tools.html) --- */
.cta-banner {
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3xl);
    text-align: center;
    margin-top: var(--spacing-3xl);
    color: var(--color-white);
    border-top: 4px solid var(--color-primary-dark);
}

.cta-banner h2 {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.cta-banner p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-2xl);
    opacity: 0.9;
}

/* --- Attribute Scoring Matrix (tools.html) --- */
.asm-definitions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.asm-def-card {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.asm-def-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.asm-def-abbr {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    background: var(--color-gold);
    color: var(--color-primary-dark);
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.asm-def-body h4 {
    color: var(--color-white);
    font-size: 1.05rem;
    margin-bottom: var(--spacing-xs);
}

.asm-def-body p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 0;
}

.asm-attr-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

.asm-attr-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.asm-attr-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.asm-attr-card-wide {
    grid-column: 1 / -1;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
}

.asm-attr-icon {
    width: 48px;
    height: 48px;
    background: rgba(212, 175, 55, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.asm-attr-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-gold);
}

.asm-attr-card h3 {
    font-size: 1.15rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.asm-attr-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 0;
}

.asm-equation-box {
    background: var(--color-white);
    border: 2px solid var(--color-gold);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.asm-equation-formula {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.asm-eq-label {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-primary);
    min-width: 140px;
    text-align: right;
}

.asm-eq-symbol {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--color-gray-500);
}

.asm-eq-fraction {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.asm-eq-num {
    padding: var(--spacing-xs) var(--spacing-md);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-primary);
}

.asm-eq-den {
    padding: var(--spacing-xs) var(--spacing-md);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-gray-700);
}

.asm-eq-sum {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.03em;
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

@media (max-width: 1024px) {
    .benefits-grid {
        grid-template-columns: 1fr 1fr;
    }

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

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

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

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .asm-definitions {
        grid-template-columns: 1fr;
    }

    .asm-attr-grid {
        grid-template-columns: 1fr;
    }

    .asm-attr-card-wide {
        max-width: none;
    }

    .asm-equation-formula {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .asm-eq-label {
        min-width: auto;
        text-align: center;
    }

    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--color-primary-dark);
        flex-direction: column;
        padding: 5rem var(--spacing-xl) var(--spacing-xl);
        gap: var(--spacing-xs);
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.3);
        z-index: 1000;
    }

    .nav-menu.open {
        display: flex;
    }

    .nav-menu li a {
        color: rgba(255, 255, 255, 0.85) !important;
        padding: 0.75rem 1rem;
        width: 100%;
        border-radius: var(--radius-md);
    }

    .nav-menu li a:hover {
        background: rgba(255, 255, 255, 0.1) !important;
        color: var(--color-white) !important;
    }

    .nav-toggle {
        display: flex;
    }

    .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);
    }

    .two-column {
        grid-template-columns: 1fr;
    }

    .parameter-cards {
        grid-template-columns: 1fr;
    }

    .options-comparison {
        grid-template-columns: 1fr;
    }

    .definition-cards {
        grid-template-columns: 1fr;
    }

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

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

    .hero-content {
        padding: calc(var(--spacing-4xl) + 2rem) var(--spacing-lg) var(--spacing-2xl);
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        text-align: center;
    }

    .footer-logo {
        margin: 0 auto var(--spacing-sm);
    }

    .strategy-steps::before {
        left: 20px;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .step-card {
        gap: var(--spacing-md);
    }

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

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

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

    .hero-cta,
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }
}