/* ============================================
   WELLNESS INTELLIGENCE DESIGN SYSTEM
   Publication-grade editorial styling
   READABILITY-FIRST VERSION
   ============================================ */

/* ============================================
   DESIGN TOKENS
   ============================================ */

:root {
    /* Colors */
    --color-paper: #FAFAFA;
    --color-charcoal: #121417;
    --color-deep-graphite: #1F2428;
    --color-secondary-text: #66717A;
    --color-tertiary-text: #A8B0B7;
    --color-divider: rgba(61, 71, 80, 0.14);
    --color-volt: #C8E6A0;
    --color-volt-hover: #A8C680;
    
    /* Typography */
    --font-masthead: 'Barlow', sans-serif;
    --font-headline: 'Barlow', sans-serif;
    --font-body: 'Albert Sans', sans-serif;
    --font-label: 'Space Mono', monospace;
    
    /* Typography Scale (Desktop - Readability-First) */
    --size-masthead: 24px;
    --size-h1: 68px;
    --size-h1-sub: 50px;
    --size-subhead: 21px;
    --size-section-label: 12px;
    --size-body: 19px;
    --size-small-note: 15px;
    
    /* Line Heights */
    --lh-tight: 1.08;
    --lh-normal: 1.4;
    --lh-relaxed: 1.7;
    --lh-spacious: 1.75;
    
    /* Letter Spacing */
    --ls-tight: -0.02em;
    --ls-label: 0.12em;
    
    /* Layout (Readability-First) */
    --max-width: 1160px;
    --editorial-width: 750px;
    --page-padding-top: 72px;
    --page-padding-side: 28px;
    --page-padding-bottom: 80px;
    --section-gap: 36px;
    --divider-spacing: 32px;
    
    /* Border Radius */
    --radius-card: 14px;
    
    /* Transitions */
    --transition-smooth: all 0.2s ease;
}

/* ============================================
   BASE RESET & TYPOGRAPHY
   ============================================ */

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

body {
    font-family: var(--font-body);
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-charcoal);
    background-color: var(--color-paper);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--page-padding-side);
}

.editorial-column {
    max-width: var(--editorial-width);
}

/* ============================================
   MASTHEAD
   ============================================ */

.masthead {
    padding-top: var(--page-padding-top);
    padding-bottom: 36px;
}

.masthead-title {
    font-family: var(--font-masthead);
    font-weight: 900;
    font-size: var(--size-masthead);
    letter-spacing: 0.02em;
    color: var(--color-charcoal);
    margin-bottom: 14px;
}

.masthead-subline {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: var(--lh-relaxed);
    color: var(--color-secondary-text);
    margin-bottom: 10px;
}

.masthead-byline {
    font-family: var(--font-label);
    font-size: var(--size-small-note);
    color: var(--color-tertiary-text);
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition-smooth);
    cursor: pointer;
    text-align: center;
    min-height: 48px;
    line-height: 1.4;
}

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

.btn-outline:hover {
    border-color: var(--color-volt-hover);
}

.btn-subscribe {
    background: transparent;
    border: 2px solid var(--color-charcoal);
    color: var(--color-charcoal);
    padding: 16px 40px;
    font-size: 17px;
    font-weight: 600;
}

.btn-subscribe:hover {
    border-color: var(--color-volt-hover);
}

/* ============================================
   DIVIDER RULE
   ============================================ */

.divider-rule {
    height: 1px;
    background: var(--color-divider);
    margin: var(--divider-spacing) 0;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: 28px 0 36px;
}

.hero-eyebrow {
    font-family: var(--font-label);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-tertiary-text);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-divider);
}

.hero-headline {
    font-family: var(--font-headline);
    font-weight: 700;
    line-height: var(--lh-tight);
    letter-spacing: var(--ls-tight);
    color: var(--color-charcoal);
    margin-bottom: 28px;
}

.hero-headline-main {
    display: block;
    font-size: var(--size-h1);
}

.hero-headline-sub {
    display: block;
    font-size: var(--size-h1-sub);
    font-style: italic;
    color: var(--color-secondary-text);
    margin-top: 12px;
}

.hero-subhead {
    font-size: var(--size-subhead);
    line-height: var(--lh-relaxed);
    color: var(--color-secondary-text);
}

/* ============================================
   SECTION LABEL
   ============================================ */

.section-label {
    font-family: var(--font-label);
    font-size: var(--size-section-label);
    font-weight: 700;
    letter-spacing: var(--ls-label);
    text-transform: uppercase;
    color: var(--color-secondary-text);
    margin-bottom: 22px;
}

/* ============================================
   THIS WEEK INCLUDES
   ============================================ */

.section-data-callout {
    padding: 28px 0;
}

.data-callout-box {
    background: var(--color-paper);
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-card);
    padding: 28px;
}

.data-callout-text {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-charcoal);
    margin-bottom: 12px;
}

.data-callout-source {
    font-family: var(--font-label);
    font-size: 12px;
    color: var(--color-tertiary-text);
    letter-spacing: 0.08em;
}

.section-includes {
    padding: var(--section-gap) 0 28px;
}

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

.includes-list {
    list-style: none;
    padding-left: 0;
}

.includes-list li {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-charcoal);
    padding-left: 28px;
    position: relative;
    margin-bottom: 14px;
}

.includes-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-charcoal);
    font-weight: 700;
}

.muted-note {
    color: var(--color-tertiary-text);
    font-size: 17px;
}

/* ============================================
   PRIMARY SUBSCRIBE SECTION
   ============================================ */

.section-video-preview {
    padding: 32px 0 24px;
}

.video-label {
    font-family: var(--font-label);
    font-size: var(--size-section-label);
    font-weight: 700;
    letter-spacing: var(--ls-label);
    text-transform: uppercase;
    color: var(--color-secondary-text);
    margin-bottom: 16px;
}

.video-wrapper {
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-card);
    overflow: hidden;
    margin-bottom: 12px;
}

.video-wrapper iframe {
    display: block;
    width: 100%;
}

.video-description {
    font-size: 16px;
    line-height: var(--lh-normal);
    color: var(--color-secondary-text);
    margin-bottom: 0;
}

.section-primary-subscribe {
    padding: 28px 0 var(--section-gap);
    text-align: center;
}

.subscribe-microcopy {
    font-family: var(--font-label);
    font-size: var(--size-small-note);
    color: var(--color-tertiary-text);
    margin-top: 12px;
    text-align: center;
}

.subscribe-note {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-secondary-text);
    margin-top: 8px;
    text-align: center;
}

/* ============================================
   PULL QUOTE
   ============================================ */

.section-pullquote {
    padding: 48px 0;
}

.pullquote {
    border-left: 3px solid var(--color-charcoal);
    padding-left: 32px;
    margin: 0;
}

.pullquote-text {
    font-size: 24px;
    line-height: 1.5;
    color: var(--color-charcoal);
    font-style: italic;
    margin-bottom: 16px;
}

.pullquote-attribution {
    font-family: var(--font-label);
    font-size: 12px;
    color: var(--color-tertiary-text);
    letter-spacing: 0.08em;
}

/* ============================================
   MOST POPULAR
   ============================================ */

.section-popular {
    padding: var(--section-gap) 0;
}

.popular-intro {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-secondary-text);
    margin-bottom: 32px;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.post-card {
    background: white;
    border: 1px solid var(--color-divider);
    border-radius: var(--radius-card);
    padding: 28px;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.post-card:hover {
    border-color: var(--color-volt-hover);
}

.post-card-title {
    font-family: var(--font-body);
    font-size: 19px;
    font-weight: 600;
    line-height: var(--lh-normal);
    color: var(--color-charcoal);
    margin: 0 0 10px 0;
}

.post-card-excerpt {
    font-size: 16px;
    line-height: var(--lh-relaxed);
    color: var(--color-secondary-text);
    margin: 0 0 18px 0;
    flex-grow: 1;
}

.post-card-link {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-charcoal);
    text-decoration: none;
    border-bottom: 1px solid var(--color-divider);
    transition: var(--transition-smooth);
    display: inline-block;
    width: fit-content;
}

.post-card-link:hover {
    border-bottom-color: var(--color-volt-hover);
}

/* ============================================
   UPGRADE SECTION
   ============================================ */

.section-upgrade {
    padding: var(--section-gap) 0;
}

.upgrade-card {
    background: white;
    border: 2px solid var(--color-charcoal);
    border-radius: var(--radius-card);
    padding: 36px;
    position: relative;
}

.upgrade-badge {
    position: absolute;
    top: -14px;
    left: 36px;
    background: var(--color-volt);
    color: var(--color-charcoal);
    font-family: var(--font-label);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.12em;
    padding: 6px 14px;
    border-radius: 4px;
}

.upgrade-text {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-charcoal);
    margin-bottom: 20px;
}

.upgrade-features {
    list-style: none;
    padding-left: 0;
    margin-bottom: 28px;
}

.upgrade-features li {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-charcoal);
    padding-left: 28px;
    position: relative;
    margin-bottom: 14px;
}

.upgrade-features li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-charcoal);
    font-weight: 700;
}

.upgrade-note {
    font-family: var(--font-label);
    font-size: var(--size-small-note);
    color: var(--color-tertiary-text);
    margin-top: 16px;
    margin-bottom: 20px;
    text-align: center;
}

/* ============================================
   SOCIAL PROOF PLACEHOLDER
   ============================================ */

.section-social-proof {
    padding: var(--section-gap) 0;
}

.placeholder-text {
    font-family: var(--font-label);
    font-size: var(--size-small-note);
    color: var(--color-tertiary-text);
    margin-bottom: 10px;
}

/* ============================================
   AUTHORITY SECTION
   ============================================ */

.section-authority {
    padding: var(--section-gap) 0;
}

.authority-photo-placeholder {
    margin-bottom: 24px;
}

.photo-circle {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--color-charcoal);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-masthead);
    font-size: 24px;
    font-weight: 900;
    letter-spacing: 0.02em;
}

.authority-intro {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-secondary-text);
    margin-bottom: 20px;
}

.authority-list {
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
}

.authority-list li {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-charcoal);
    padding-left: 28px;
    position: relative;
    margin-bottom: 14px;
}

.authority-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-charcoal);
    font-weight: 700;
}

.authority-note {
    font-size: var(--size-body);
    line-height: var(--lh-spacious);
    color: var(--color-secondary-text);
    font-style: italic;
    margin-top: 20px;
}

/* ============================================
   DISCLOSURE SECTION
   ============================================ */

.section-disclosure {
    padding: var(--section-gap) 0 var(--page-padding-bottom);
}

.disclosure-text {
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.65;
    color: var(--color-secondary-text);
}

/* ============================================
   FOOTER (LEFT-ALIGNED)
   ============================================ */

.footer {
    background: var(--color-deep-graphite);
    padding: 56px 0;
}

.footer-nav {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.footer-nav a {
    font-family: var(--font-label);
    font-size: 13px;
    color: var(--color-tertiary-text);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.footer-nav a:hover {
    color: var(--color-volt);
}

/* ============================================
   STICKY UTILITY BAR
   ============================================ */

.sticky-utility-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50px;
    background: rgba(250, 250, 250, 0.92);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-top: 1px solid var(--color-divider);
    opacity: 0;
    transform: translateY(100%);
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 1000;
}

.sticky-utility-bar.visible {
    opacity: 1;
    transform: translateY(0);
}

.sticky-content {
    display: flex;
    align-items: center;
    gap: 16px;
    height: 50px;
}

.sticky-link {
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 500;
    color: var(--color-charcoal);
    text-decoration: none;
    border-bottom: 1px solid var(--color-divider);
    transition: var(--transition-smooth);
}

.sticky-link:hover {
    border-bottom-color: var(--color-volt-hover);
}

.sticky-note {
    font-family: var(--font-label);
    font-size: 11px;
    color: var(--color-tertiary-text);
}

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

@media (max-width: 768px) {
    :root {
        --size-h1: 44px;
        --size-h1-sub: 34px;
        --size-subhead: 19px;
        --size-body: 18px;
        --page-padding-top: 48px;
        --page-padding-side: 24px;
        --page-padding-bottom: 56px;
        --editorial-width: 100%;
    }
    
    .hero {
        padding: 20px 0 28px;
    }
    
    .hero-headline-main {
        font-size: var(--size-h1);
    }
    
    .hero-headline-sub {
        font-size: var(--size-h1-sub);
        margin-top: 10px;
    }
    
    .data-callout-box {
        padding: 20px;
    }
    
    .includes-card {
        padding: 24px;
    }
    
    .video-wrapper iframe {
        height: 200px;
    }
    
    .upgrade-card {
        padding: 28px 24px;
    }
    
    .upgrade-badge {
        left: 24px;
    }
    
    .photo-circle {
        width: 64px;
        height: 64px;
        font-size: 20px;
    }
    
    .posts-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: 18px;
    }
}

@media (max-width: 480px) {
    :root {
        --size-h1: 40px;
        --size-h1-sub: 30px;
        --size-masthead: 20px;
        --page-padding-side: 20px;
    }
    
    .masthead-title {
        font-size: var(--size-masthead);
    }
    
    .masthead-subline {
        font-size: 16px;
    }
    
    .hero-headline-main {
        font-size: var(--size-h1);
    }
    
    .hero-headline-sub {
        font-size: var(--size-h1-sub);
    }
    
    .btn {
        padding: 13px 28px;
        font-size: 15px;
    }
    
    .btn-subscribe {
        padding: 14px 32px;
        font-size: 16px;
    }
}