/*
Theme Name: AI Voice Research
Theme URI: https://aivoiceresearch.com
Author: AI Voice Research
Author URI: https://aivoiceresearch.com
Description: A minimal market research theme for AI Voice Research. Paste HTML content directly into page Text editor.
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: aivoice-theme
*/

/* ========================================
   CSS Variables & Reset
   ======================================== */
:root {
    --color-ink: #0a0a0a;
    --color-paper: #faf9f7;
    --color-cream: #f5f3ef;
    --color-stone: #e8e4de;
    --color-slate: #64605a;
    --color-muted: #8a857e;
    --color-accent: #1a4d3e;
    --color-accent-light: #2d7a62;
    --color-highlight: #c9a962;
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'DM Sans', -apple-system, sans-serif;
    --spacing-unit: 8px;
    --max-width: 1400px;
    --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    font-family: var(--font-body);
    background-color: var(--color-paper);
    color: var(--color-ink);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 500;
    line-height: 1.15;
}

/* ========================================
   Utility Classes
   ======================================== */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 4);
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

.section-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-stone), transparent);
}

/* ========================================
   Header
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-stone);
    transition: transform 0.4s var(--transition-smooth), box-shadow 0.4s var(--transition-smooth);
}

.site-header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--spacing-unit) * 2.5) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    text-decoration: none;
    color: var(--color-ink);
}

.logo-mark {
    width: 42px;
    height: 42px;
    background: var(--color-accent);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.logo-mark::before {
    content: '';
    position: absolute;
    width: 60%;
    height: 60%;
    border: 2px solid var(--color-paper);
    border-radius: 50%;
    animation: pulse-ring 3s ease-in-out infinite;
}

.logo-mark::after {
    content: '';
    position: absolute;
    width: 30%;
    height: 30%;
    background: var(--color-paper);
    border-radius: 50%;
}

@keyframes pulse-ring {
    0%, 100% { transform: scale(0.8); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 1; }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 5);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: calc(var(--spacing-unit) * 4);
}

.nav-links a {
    text-decoration: none;
    color: var(--color-slate);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    position: relative;
    padding: calc(var(--spacing-unit) * 0.5) 0;
    transition: color 0.3s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width 0.3s var(--transition-smooth);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-ink);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    background: var(--color-ink);
    color: var(--color-paper);
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-cta:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 3px;
    transition: all 0.3s var(--transition-smooth);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-paper);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(26, 77, 62, 0.2);
}

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

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

.btn-white {
    background: var(--color-paper);
    color: var(--color-accent);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn svg {
    width: 18px;
    height: 18px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: calc(var(--spacing-unit) * 20) 0 calc(var(--spacing-unit) * 12);
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-paper) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231a4d3e' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 8);
    align-items: center;
}

.hero-text {
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-label {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.hero-label::before {
    content: '';
    width: 32px;
    height: 1px;
    background: var(--color-accent);
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--color-ink);
}

.hero h1 em {
    font-style: italic;
    color: var(--color-accent);
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-slate);
    max-width: 520px;
    margin-bottom: calc(var(--spacing-unit) * 5);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
}

.hero-visual {
    position: relative;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--spacing-unit) * 3);
}

.stat-card {
    background: var(--color-paper);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
    border: 1px solid var(--color-stone);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-slate);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   Section Headers
   ======================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto calc(var(--spacing-unit) * 8);
}

.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    background: rgba(26, 77, 62, 0.08);
    border-radius: 2px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-slate);
    line-height: 1.7;
}

/* ========================================
   Methodology Section
   ======================================== */
.methodology {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-paper);
}

.methodology-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--spacing-unit) * 4);
}

.method-card {
    padding: calc(var(--spacing-unit) * 5);
    background: var(--color-cream);
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s var(--transition-smooth);
}

.method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 0;
    background: var(--color-accent);
    transition: height 0.4s var(--transition-smooth);
}

.method-card:hover {
    background: var(--color-paper);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.method-card:hover::before {
    height: 100%;
}

.method-icon {
    width: 56px;
    height: 56px;
    background: var(--color-paper);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--color-accent);
    transition: all 0.3s ease;
}

.method-card:hover .method-icon {
    background: var(--color-accent);
    color: var(--color-paper);
}

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

.method-card h3 {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    font-weight: 600;
}

.method-card p {
    font-size: 0.95rem;
    color: var(--color-slate);
    line-height: 1.7;
}

/* ========================================
   Insights Section
   ======================================== */
.insights {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-cream);
}

.insights-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.insights-header .section-header {
    text-align: left;
    margin: 0;
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-accent);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: gap 0.3s ease;
}

.view-all-link:hover {
    gap: calc(var(--spacing-unit) * 2);
}

.view-all-link svg {
    width: 18px;
    height: 18px;
}

.insights-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: calc(var(--spacing-unit) * 4);
}

.insight-card {
    background: var(--color-paper);
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    transition: all 0.4s var(--transition-smooth);
    border: 1px solid transparent;
}

.insight-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    border-color: var(--color-stone);
}

.insight-featured {
    grid-row: span 2;
}

.insight-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    position: relative;
    overflow: hidden;
}

.insight-featured .insight-image {
    aspect-ratio: 16/12;
}

.insight-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M50 50m-40 0a40 40 0 1 0 80 0a40 40 0 1 0-80 0' fill='none' stroke='%23fff' stroke-opacity='0.1' stroke-width='0.5'/%3E%3Cpath d='M50 50m-25 0a25 25 0 1 0 50 0a25 25 0 1 0-50 0' fill='none' stroke='%23fff' stroke-opacity='0.1' stroke-width='0.5'/%3E%3Cpath d='M50 50m-10 0a10 10 0 1 0 20 0a10 10 0 1 0-20 0' fill='none' stroke='%23fff' stroke-opacity='0.15' stroke-width='0.5'/%3E%3C/svg%3E");
    background-size: 200px;
    animation: rotate 60s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.insight-image-alt {
    background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-slate) 100%);
}

.insight-image-alt2 {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);	
}

.insight-content {
    padding: calc(var(--spacing-unit) * 4);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.insight-featured .insight-content {
    padding: calc(var(--spacing-unit) * 5);
}

.insight-meta {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.insight-category {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: rgba(26, 77, 62, 0.08);
    padding: calc(var(--spacing-unit) * 0.5) calc(var(--spacing-unit) * 1.5);
    border-radius: 2px;
}

.insight-date {
    font-size: 0.8rem;
    color: var(--color-muted);
}

.insight-card h3 {
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    line-height: 1.35;
    transition: color 0.3s ease;
}

.insight-featured h3 {
    font-size: 1.75rem;
}

.insight-card:hover h3 {
    color: var(--color-accent);
}

.insight-excerpt {
    font-size: 0.95rem;
    color: var(--color-slate);
    line-height: 1.7;
    flex: 1;
}

.insight-author {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    margin-top: calc(var(--spacing-unit) * 3);
    padding-top: calc(var(--spacing-unit) * 3);
    border-top: 1px solid var(--color-stone);
}

.author-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-stone);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-slate);
}

.author-info {
    font-size: 0.85rem;
}

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

.author-title {
    color: var(--color-muted);
}

/* ========================================
   Market Data Section
   ======================================== */
.market-data {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-ink);
    color: var(--color-paper);
    position: relative;
    overflow: hidden;
}

.market-data::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 50%, rgba(26, 77, 62, 0.3) 0%, transparent 60%);
}

.market-data .section-header {
    position: relative;
    z-index: 1;
}

.market-data .section-label {
    background: rgba(201, 169, 98, 0.2);
    color: var(--color-highlight);
}

.market-data .section-subtitle {
    color: rgba(255, 255, 255, 0.6);
}

.market-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: calc(var(--spacing-unit) * 4);
    position: relative;
    z-index: 1;
}

.market-stat {
    text-align: center;
    padding: calc(var(--spacing-unit) * 5);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.market-stat:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(201, 169, 98, 0.3);
    transform: translateY(-4px);
}

.market-stat-value {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 600;
    color: var(--color-highlight);
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.market-stat-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

/* ========================================
   Newsletter Section
   ======================================== */
.newsletter {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--color-cream);
}

.newsletter-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: calc(var(--spacing-unit) * 8);
    background: var(--color-paper);
    padding: calc(var(--spacing-unit) * 8);
    border-radius: 12px;
    border: 1px solid var(--color-stone);
}

.newsletter-content {
    flex: 1;
}

.newsletter h2 {
    font-size: 2rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.newsletter p {
    font-size: 1.05rem;
    color: var(--color-slate);
}

.newsletter-form {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    flex: 1;
    max-width: 500px;
}

.newsletter-input {
    flex: 1;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 3);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--color-stone);
    border-radius: 4px;
    background: var(--color-paper);
    transition: all 0.3s ease;
}

.newsletter-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(26, 77, 62, 0.1);
}

/* ========================================
   Capabilities Section
   ======================================== */
.capabilities {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-paper);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--spacing-unit) * 4);
}

.capability-card {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
    padding: calc(var(--spacing-unit) * 5);
    background: var(--color-cream);
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.capability-card:hover {
    background: var(--color-paper);
    border-color: var(--color-stone);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.capability-number {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 600;
    color: var(--color-stone);
    line-height: 1;
    transition: color 0.3s ease;
}

.capability-card:hover .capability-number {
    color: var(--color-accent);
}

.capability-content h3 {
    font-size: 1.35rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.capability-content p {
    font-size: 0.95rem;
    color: var(--color-slate);
    line-height: 1.7;
}

/* ========================================
   Quote Section
   ======================================== */
.quote-section {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: var(--color-paper);
    text-align: center;
}

.quote-inner {
    max-width: 900px;
    margin: 0 auto;
}

.quote-mark {
    font-family: var(--font-display);
    font-size: 8rem;
    line-height: 1;
    opacity: 0.2;
    margin-bottom: calc(var(--spacing-unit) * -6);
}

.quote-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-style: italic;
    line-height: 1.5;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.quote-attribution {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.8;
}

/* ========================================
   Page Hero
   ======================================== */
.page-hero {
    padding: calc(var(--spacing-unit) * 20) 0 calc(var(--spacing-unit) * 10);
    background: var(--color-cream);
    border-bottom: 1px solid var(--color-stone);
}

.page-hero-inner {
    max-width: 800px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    font-size: 0.85rem;
    color: var(--color-muted);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.breadcrumb a {
    color: var(--color-slate);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.page-hero h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.page-hero h1 em {
    font-style: italic;
    color: var(--color-accent);
}

.page-hero-description {
    font-size: 1.2rem;
    color: var(--color-slate);
    line-height: 1.7;
}

/* ========================================
   Research Section
   ======================================== */
.filters-section {
    padding: calc(var(--spacing-unit) * 4) 0;
    border-bottom: 1px solid var(--color-stone);
    background: var(--color-paper);
    position: sticky;
    top: 73px;
    z-index: 100;
}

.filters-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: calc(var(--spacing-unit) * 4);
}

.filter-tabs {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
}

.filter-tab {
    padding: calc(var(--spacing-unit) * 1.25) calc(var(--spacing-unit) * 2.5);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-slate);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-body);
}

.filter-tab:hover {
    background: var(--color-cream);
}

.filter-tab.active {
    background: var(--color-accent);
    color: var(--color-paper);
    border-color: var(--color-accent);
}

.search-box {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1);
    padding: calc(var(--spacing-unit) * 1.25) calc(var(--spacing-unit) * 2);
    border: 1px solid var(--color-stone);
    border-radius: 4px;
    background: var(--color-paper);
    transition: all 0.3s ease;
}

.search-box:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(26, 77, 62, 0.1);
}

.search-box svg {
    width: 18px;
    height: 18px;
    color: var(--color-muted);
}

.search-box input {
    border: none;
    background: transparent;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--color-ink);
    width: 200px;
    outline: none;
}

.search-box input::placeholder {
    color: var(--color-muted);
}

.research-section {
    padding: calc(var(--spacing-unit) * 8) 0;
}

.research-grid {
    display: flex;
    flex-direction: column;
    gap: calc(var(--spacing-unit) * 4);
}

.research-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: calc(var(--spacing-unit) * 5);
    padding: calc(var(--spacing-unit) * 4);
    background: var(--color-paper);
    border: 1px solid var(--color-stone);
    border-radius: 8px;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s var(--transition-smooth);
}

.research-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.research-image {
    aspect-ratio: 4/3;
    border-radius: 6px;
    position: relative;
    overflow: hidden;
}

.research-image-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
}

.research-image-bg.alt-1 {
    background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-slate) 100%);
}

.research-image-bg.alt-2 {
    background: linear-gradient(135deg, var(--color-highlight) 0%, #d4b878 100%);
}

.research-image-bg.alt-3 {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
}

.research-image-pattern {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.08'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.research-type-badge {
    position: absolute;
    top: calc(var(--spacing-unit) * 2);
    left: calc(var(--spacing-unit) * 2);
    padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.5);
    background: rgba(255, 255, 255, 0.95);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    border-radius: 3px;
}

.research-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.research-meta {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.research-category {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.research-date {
    font-size: 0.85rem;
    color: var(--color-muted);
}

.research-card h3 {
    font-size: 1.5rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
    line-height: 1.3;
    transition: color 0.3s ease;
}

.research-card:hover h3 {
    color: var(--color-accent);
}

.research-excerpt {
    font-size: 0.95rem;
    color: var(--color-slate);
    line-height: 1.7;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.research-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.research-author {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
}

.read-time {
    font-size: 0.8rem;
    color: var(--color-muted);
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.75);
}

.read-time svg {
    width: 14px;
    height: 14px;
}

/* ========================================
   About Styles
   ======================================== */
.about-intro {
    padding: calc(var(--spacing-unit) * 10) 0;
}

.about-intro-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--spacing-unit) * 10);
    align-items: center;
}

.about-intro-content h2 {
    font-size: 2.25rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.about-intro-content p {
    font-size: 1.05rem;
    color: var(--color-slate);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 2.5);
}

.about-intro-visual {
    background: var(--color-cream);
    border-radius: 12px;
    padding: calc(var(--spacing-unit) * 6);
    position: relative;
    overflow: hidden;
}

.about-intro-visual::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
}

.about-stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--spacing-unit) * 4);
}

.about-stat {
    text-align: center;
    padding: calc(var(--spacing-unit) * 3);
}

.about-stat-value {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.about-stat-label {
    font-size: 0.85rem;
    color: var(--color-slate);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mission-section {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: var(--color-ink);
    color: var(--color-paper);
}

.mission-inner {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.mission-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-style: italic;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
}

.team-section {
    padding: calc(var(--spacing-unit) * 12) 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: calc(var(--spacing-unit) * 4);
}

.team-member {
    text-align: center;
    padding: calc(var(--spacing-unit) * 4);
    background: var(--color-cream);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.team-member:hover {
    background: var(--color-paper);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
    transform: translateY(-4px);
}

.team-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    margin: 0 auto calc(var(--spacing-unit) * 3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 600;
    color: var(--color-paper);
}

.team-member h3 {
    font-size: 1.15rem;
    margin-bottom: calc(var(--spacing-unit) * 0.5);
}

.team-role {
    font-size: 0.85rem;
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.team-bio {
    font-size: 0.9rem;
    color: var(--color-slate);
    line-height: 1.6;
}

.values-section {
    padding: calc(var(--spacing-unit) * 12) 0;
    background: var(--color-cream);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--spacing-unit) * 4);
}

.value-card {
    padding: calc(var(--spacing-unit) * 5);
    background: var(--color-paper);
    border-radius: 8px;
    border: 1px solid var(--color-stone);
    transition: all 0.3s ease;
}

.value-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

.value-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 600;
    color: var(--color-stone);
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.value-card:hover .value-number {
    color: var(--color-accent);
}

.value-card h3 {
    font-size: 1.35rem;
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.value-card p {
    font-size: 0.95rem;
    color: var(--color-slate);
    line-height: 1.7;
}

.cta-section {
    padding: calc(var(--spacing-unit) * 10) 0;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    color: var(--color-paper);
    text-align: center;
}

.cta-inner {
    max-width: 700px;
    margin: 0 auto;
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.cta-section p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

/* ========================================
   Article Styles
   ======================================== */
.article-hero {
    padding: calc(var(--spacing-unit) * 18) 0 calc(var(--spacing-unit) * 8);
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-paper) 100%);
}

.article-hero-inner {
    max-width: 800px;
    margin: 0 auto;
}

.article-meta-top {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.article-category {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    background: rgba(26, 77, 62, 0.08);
    padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.5);
    border-radius: 3px;
}

.article-date {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.article-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    margin-bottom: calc(var(--spacing-unit) * 3);
    line-height: 1.2;
}

.article-excerpt {
    font-size: 1.25rem;
    color: var(--color-slate);
    line-height: 1.7;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.article-author-box {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--color-stone);
}

.author-avatar-large {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-paper);
}

.author-details {
    flex: 1;
}

.author-name-large {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: calc(var(--spacing-unit) * 0.25);
}

.author-title-large {
    font-size: 0.9rem;
    color: var(--color-muted);
}

.read-time-badge {
    font-size: 0.85rem;
    color: var(--color-slate);
    background: var(--color-cream);
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 2);
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 0.75);
}

.read-time-badge svg {
    width: 16px;
    height: 16px;
}

.article-content {
    max-width: 720px;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 8) calc(var(--spacing-unit) * 4);
}

.article-content h2 {
    font-size: 1.75rem;
    margin-top: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 3);
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--color-stone);
}

.article-content h2:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.article-content h3 {
    font-size: 1.35rem;
    margin-top: calc(var(--spacing-unit) * 4);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.article-content p {
    font-size: 1.1rem;
    line-height: 1.85;
    color: var(--color-ink);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.article-content strong {
    font-weight: 600;
}

.article-content em {
    font-style: italic;
}

.article-content a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-color: rgba(26, 77, 62, 0.3);
    text-underline-offset: 3px;
    transition: text-decoration-color 0.3s ease;
}

.article-content a:hover {
    text-decoration-color: var(--color-accent);
}

.article-content blockquote {
    margin: calc(var(--spacing-unit) * 5) 0;
    padding: calc(var(--spacing-unit) * 4) calc(var(--spacing-unit) * 5);
    background: var(--color-cream);
    border-left: 4px solid var(--color-accent);
    border-radius: 0 8px 8px 0;
}

.article-content blockquote p {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-style: italic;
    color: var(--color-slate);
    margin-bottom: 0;
    line-height: 1.6;
}

.key-findings {
    background: var(--color-ink);
    color: var(--color-paper);
    padding: calc(var(--spacing-unit) * 5);
    border-radius: 8px;
    margin: calc(var(--spacing-unit) * 5) 0;
}

.key-findings-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--color-highlight);
}

.key-findings ul {
    list-style: none;
}

.key-findings li {
    font-size: 1rem;
    line-height: 1.7;
    padding-left: calc(var(--spacing-unit) * 3);
    position: relative;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.key-findings li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    background: var(--color-highlight);
    border-radius: 50%;
}

.key-findings li:last-child {
    margin-bottom: 0;
}

.data-callout {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--spacing-unit) * 3);
    margin: calc(var(--spacing-unit) * 5) 0;
    padding: calc(var(--spacing-unit) * 4);
    background: var(--color-cream);
    border-radius: 8px;
}

.data-point {
    text-align: center;
}

.data-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1;
    margin-bottom: calc(var(--spacing-unit) * 0.75);
}

.data-label {
    font-size: 0.85rem;
    color: var(--color-slate);
}

.article-footer {
    max-width: 720px;
    margin: 0 auto;
    padding: calc(var(--spacing-unit) * 6) calc(var(--spacing-unit) * 4);
    border-top: 1px solid var(--color-stone);
}

.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: calc(var(--spacing-unit) * 1);
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.article-tag {
    font-size: 0.8rem;
    color: var(--color-slate);
    background: var(--color-cream);
    padding: calc(var(--spacing-unit) * 0.75) calc(var(--spacing-unit) * 1.5);
    border-radius: 3px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.article-tag:hover {
    background: var(--color-accent);
    color: var(--color-paper);
}

.share-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.share-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-slate);
}

.share-buttons {
    display: flex;
    gap: calc(var(--spacing-unit) * 1);
}

.share-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-stone);
    border-radius: 4px;
    color: var(--color-slate);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

.share-btn svg {
    width: 18px;
    height: 18px;
}

.related-section {
    background: var(--color-cream);
    padding: calc(var(--spacing-unit) * 10) 0;
}

.related-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.related-header h2 {
    font-size: 2rem;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--spacing-unit) * 4);
}

.related-card {
    background: var(--color-paper);
    border-radius: 8px;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    border: 1px solid var(--color-stone);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.related-image {
    aspect-ratio: 16/10;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
}

.related-image.alt-1 {
    background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-slate) 100%);
}

.related-image.alt-2 {
    background: linear-gradient(135deg, var(--color-highlight) 0%, #d4b878 100%);
}

.related-content {
    padding: calc(var(--spacing-unit) * 3);
}

.related-card h3 {
    font-size: 1.1rem;
    line-height: 1.35;
    margin-bottom: calc(var(--spacing-unit) * 1);
    transition: color 0.3s ease;
}

.related-card:hover h3 {
    color: var(--color-accent);
}

.related-meta {
    font-size: 0.8rem;
    color: var(--color-muted);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background: var(--color-ink);
    color: var(--color-paper);
    padding: calc(var(--spacing-unit) * 10) 0 calc(var(--spacing-unit) * 5);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: calc(var(--spacing-unit) * 8);
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.footer-brand .logo {
    color: var(--color-paper);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.footer-brand .logo-mark {
    background: var(--color-accent-light);
}

.footer-description {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
    max-width: 320px;
}

.footer-column h4 {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-highlight);
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: calc(var(--spacing-unit) * 1.5);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--color-paper);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: calc(var(--spacing-unit) * 5);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

.footer-legal-links {
    display: flex;
    gap: calc(var(--spacing-unit) * 4);
}

.footer-legal-links a {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-legal-links a:hover {
    color: var(--color-paper);
}

.footer-notice {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    margin: 40px 0 0;
}

.footer-notice p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
    margin: 0;
}

.footer-notice a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: underline;
}

.footer-notice a:hover {
    color: #fff;
}

/* ========================================
   Responsive Styles
   ======================================== */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: calc(var(--spacing-unit) * 6);
    }

    .hero-visual {
        order: -1;
    }

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

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

    .insight-featured {
        grid-row: span 1;
    }

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

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

    .about-intro-grid {
        grid-template-columns: 1fr;
    }

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

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

    .research-card {
        grid-template-columns: 250px 1fr;
    }

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

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        padding: calc(var(--spacing-unit) * 16) 0 calc(var(--spacing-unit) * 8);
    }

    .hero-stats {
        grid-template-columns: 1fr;
    }

    .insights-header {
        flex-direction: column;
        align-items: flex-start;
        gap: calc(var(--spacing-unit) * 3);
    }

    .newsletter-inner {
        flex-direction: column;
        text-align: center;
    }

    .newsletter-form {
        flex-direction: column;
        width: 100%;
        max-width: none;
    }

    .filters-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-tabs {
        overflow-x: auto;
        padding-bottom: calc(var(--spacing-unit) * 1);
    }

    .research-card {
        grid-template-columns: 1fr;
    }

    .research-image {
        aspect-ratio: 16/9;
    }

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

    .data-callout {
        grid-template-columns: 1fr;
    }

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

    .footer-bottom {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 3);
        text-align: center;
    }
}