/* KSM × TECH / BOOK IS YOUR FRIEND (BYF) — CONSUMER SHOWCASE STYLES */

/* ──────────────────────────────────────────────────────────
   BYF LUXURY EDITORIAL PALETTE — Deep Cocoa, Warm Parchment & Radiant Lime
   Ground:         Deep Cocoa Black          #17110C
   Scaffold Base:  Warm Earthy Brown         #221A14
   Surface High:   Elevated Cocoa Sheet      #2C221A
   Surface Top:    Header & Card Highlights  #382C22
   Borders:        Subtle Warm Cocoa Line    #3B2E23 / rgba(250, 245, 235, 0.08)
   
   Accent:         Radiant Lime              #D4FE19
   Accent Hover:   Warm Neon Chartreuse      #BADA00
   On-Accent:      Obsidian Core             #141708
   
   Typography Ground:
   Parchment Cream White: #FAF5EB (Headings, primary emphasis)
   Warm Bone:             #ECE2CE (Subheadings, titles)
   Muted Cream:           #BDB09A (Body copy, high legibility)
   Subtle Earthy Ink:     #8C7F6B (Captions, timestamps)
   
   Earthy Botanical Pigments:
   Terracotta:    #D97746 (Action & Kinetic Execution)
   Sage Green:    #7E9B77 (Clarity & Purpose)
   Warm Amber:    #D8AA56 (Stoic Wisdom & Sacred Bibliotherapy)
   Dusty Rose:    #C78A8D (Heavy Heart & Grief)
   Periwinkle:    #829BB4 (The Overwhelmed Mind & Stillness)
   ────────────────────────────────────────────────────────── */

:root {
    --byf-bg:                #17110C;
    --byf-surface:           #221A14;
    --byf-surface-high:      #2C221A;
    --byf-surface-top:       #382C22;
    --byf-surface-highlight: #45372B;

    --byf-border:            #3B2E23;
    --byf-border-subtle:     rgba(250, 245, 235, 0.08);
    --byf-border-lime:       rgba(212, 254, 25, 0.35);

    --byf-lime:              #D4FE19;
    --byf-lime-hover:        #BADA00;
    --byf-lime-dim:          #A2C510;
    --byf-lime-container:    rgba(212, 254, 25, 0.12);
    --byf-lime-glow:         rgba(212, 254, 25, 0.25);
    --byf-on-lime:           #141708;

    --byf-cream:             #FAF5EB;
    --byf-bone:              #ECE2CE;
    --byf-text:              #FAF5EB;
    --byf-text-dim:          #BDB09A;
    --byf-text-subtle:       #8C7F6B;
    --byf-outline:           #5C4F3D;

    --byf-terracotta:        #D97746;
    --byf-sage:              #7E9B77;
    --byf-amber:             #D8AA56;
    --byf-rose:              #C78A8D;
    --byf-periwinkle:        #829BB4;
}

/* ─── PAGE CONTAINER & GLOBAL RESETS ─── */
.byf-page { 
    background: var(--byf-bg); 
    color: var(--byf-text); 
    font-family: var(--ui, 'Yantramanav', system-ui, sans-serif);
}

.byf-page section { 
    padding: 120px 0; 
    position: relative; 
}

.byf-page .container,
.byf-page .bf-narrow {
    width: min(1200px, calc(100% - 48px));
    margin: 0 auto;
}
.byf-page .bf-narrow { max-width: 860px; }

/* ─── THE PAGE DECLARES ITS OWN GROUND TO BASE SYSTEM ─── */
.byf-page {
    --ground:     var(--byf-bg);
    --text:       var(--byf-text);
    --text-soft:  var(--byf-text-dim);
    --text-muted: var(--byf-text-subtle);
    --line:       var(--byf-border);
    --art-a:      var(--byf-lime);
    --art-b:      var(--byf-sage);
    --art-c:      var(--byf-amber);
}

/* ─── HEADER & LOGO THEME OVERRIDES ─── */
.byf-page .header.scrolled {
    background: rgba(23, 17, 12, 0.95);
    border-bottom: 1px solid var(--byf-border);
}

.byf-page .logo,
.byf-page .logo-text {
    color: var(--byf-cream);
}

.byf-page .logo-mark,
.byf-page .logo-x {
    color: var(--byf-lime) !important;
}

.byf-page .nav a {
    color: var(--byf-text-dim);
    transition: color 0.2s ease;
}

.byf-page .nav a:hover {
    color: var(--byf-lime);
}

.byf-page .nav a::after {
    background: var(--byf-lime);
}

/* ─── HERO SECTION ─── */
.bf-hero {
    padding: 160px 24px 100px !important;
    position: relative;
    overflow: hidden;
}

.bf-hero::before {
    content: '';
    position: absolute;
    top: 40px;
    right: -180px;
    width: 760px;
    height: 760px;
    background: radial-gradient(circle, rgba(212, 254, 25, 0.08) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
}

.bf-hero::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -140px;
    width: 580px;
    height: 580px;
    background: radial-gradient(circle, rgba(217, 119, 70, 0.07) 0%, transparent 60%);
    z-index: 0;
    pointer-events: none;
}

.bf-hero-grid {
    width: min(1200px, calc(100% - 48px));
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 2;
}

@media (max-width: 980px) {
    .bf-hero-grid { grid-template-columns: 1fr; gap: 56px; }
}

.bf-deva {
    font-family: var(--devanagari, 'Yantramanav', sans-serif);
    font-weight: 600;
    font-size: clamp(20px, 2.4vw, 26px);
    color: var(--byf-bone);
    margin-bottom: 14px;
    letter-spacing: 0.02em;
    line-height: 1;
    display: flex;
    align-items: center;
    gap: 12px;
}

.bf-deva-sub {
    font-family: var(--ui);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.12em;
    color: var(--byf-lime);
    text-transform: uppercase;
}

.bf-version-pill {
    font-family: var(--ui);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.14em;
    color: var(--byf-bone);
    margin-bottom: 24px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--byf-surface);
    border: 1px solid var(--byf-border);
    padding: 7px 16px;
    border-radius: 100px;
}

.bf-version-pill .dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--byf-lime);
    box-shadow: 0 0 10px var(--byf-lime);
    animation: bf-pulse-dot 2.2s ease-in-out infinite;
}

@keyframes bf-pulse-dot {
    0%, 100% { opacity: 0.6; transform: scale(0.95); }
    50% { opacity: 1; transform: scale(1.15); box-shadow: 0 0 14px var(--byf-lime); }
}

.bf-title {
    font-family: var(--display, 'Eczar', serif);
    font-size: clamp(38px, 4.8vw, 62px);
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 22px;
    color: var(--byf-cream);
}

.bf-title em {
    font-style: italic;
    color: var(--byf-lime);
    text-shadow: 0 0 30px rgba(212, 254, 25, 0.2);
}

.bf-lead {
    font-family: var(--read, 'Yantramanav', sans-serif);
    font-size: 17.5px;
    line-height: 1.75;
    color: var(--byf-text-dim);
    max-width: 600px;
}

.bf-lead strong {
    color: var(--byf-cream);
    font-weight: 500;
}

.bf-cta-row {
    display: flex;
    gap: 16px;
    margin-top: 36px;
    flex-wrap: wrap;
    align-items: center;
}

.bf-btn {
    font-family: var(--ui);
    font-size: 13.5px;
    font-weight: 700;
    letter-spacing: 0.06em;
    padding: 14px 28px;
    border-radius: 8px;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.22s cubic-bezier(0.2, 0, 0, 1);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.bf-btn-primary {
    background: var(--byf-lime);
    color: var(--byf-on-lime);
    box-shadow: 0 4px 18px rgba(212, 254, 25, 0.22);
}

.bf-btn-primary:hover {
    background: var(--byf-lime-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 26px rgba(212, 254, 25, 0.35);
}

.bf-btn-ghost {
    background: var(--byf-surface);
    color: var(--byf-bone);
    border: 1px solid var(--byf-border);
}

.bf-btn-ghost:hover {
    border-color: var(--byf-lime);
    color: var(--byf-lime);
    background: var(--byf-surface-high);
    transform: translateY(-2px);
}

.bf-play-badge-btn {
    background: #000000;
    color: #FFFFFF;
    border: 1px solid rgba(250, 245, 235, 0.2);
    padding: 11px 22px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.bf-play-badge-btn:hover {
    border-color: var(--byf-lime);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.bf-play-badge-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.bf-play-badge-text {
    display: flex;
    flex-direction: column;
    text-align: left;
    line-height: 1.1;
}

.bf-play-badge-sub {
    font-size: 9.5px;
    letter-spacing: 0.08em;
    color: var(--byf-text-dim);
    text-transform: uppercase;
}

.bf-play-badge-title {
    font-size: 14px;
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.02em;
}

.bf-hero-receipts {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-family: var(--ui);
    font-size: 12.5px;
    color: var(--byf-text-dim);
}

.bf-hero-receipts .receipt-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.bf-hero-receipts .check {
    color: var(--byf-lime);
    font-weight: bold;
}

/* ─── 3D INTERACTIVE HERO FLIP CARD (PIXEL-PERFECT FIX) ─── */
.bf-hero-showcase {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.bf-flip-stage {
    perspective: 1000px;
    width: 100%;
    max-width: 360px;
    height: 520px;
    margin: 0 auto;
    position: relative;
}

.bf-flip-card {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    transition: transform 0.75s cubic-bezier(0.34, 1.56, 0.64, 1);
    border-radius: 16px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.65);
    cursor: pointer;
}

.bf-flip-card.is-flipped {
    transform: rotateY(180deg);
}

/* BOTH FACES MUST OCCUPY EXACT SAME BOUNDS WITH NO RELATIVE FLOW OVERRIDES */
.bf-flip-face {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100% !important;
    height: 100% !important;
    margin: 0 !important;
    -webkit-backface-visibility: hidden !important;
    backface-visibility: hidden !important;
    border-radius: 16px;
    overflow: hidden;
    box-sizing: border-box;
}

/* Front Face: 3D Cover */
.bf-flip-front {
    background: var(--byf-surface);
    border: 1px solid var(--byf-border);
    transform: rotateY(0deg);
    z-index: 2;
    display: flex;
    flex-direction: column;
}

.bf-cover-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.bf-spine-simulation {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 20px;
    background: linear-gradient(90deg, rgba(0,0,0,0.5) 0%, rgba(255,255,255,0.09) 45%, rgba(0,0,0,0.4) 100%);
    pointer-events: none;
}

.bf-cover-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(0deg, rgba(23, 17, 12, 0.95) 0%, rgba(23, 17, 12, 0.7) 65%, transparent 100%);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.bf-cover-badge {
    align-self: flex-start;
    padding: 4px 10px;
    border-radius: 100px;
    background: var(--byf-lime-container);
    color: var(--byf-lime);
    border: 1px solid var(--byf-border-lime);
    font-family: var(--ui);
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: 0.1em;
}

.bf-cover-title {
    font-family: var(--display);
    font-size: 22px;
    font-weight: 600;
    color: var(--byf-cream);
    margin: 0;
}

.bf-cover-author {
    font-family: var(--ui);
    font-size: 13px;
    color: var(--byf-bone);
    margin: 0;
}

/* Back Face: Visual Wisdom Infographic */
.bf-flip-back {
    background: #FAF5EB;
    border: 2px solid var(--byf-lime);
    transform: rotateY(180deg);
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
}

.bf-infographic-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
    display: block;
}

/* Flip Trigger Button */
.bf-flip-toggle-btn {
    margin-top: 22px;
    font-family: var(--ui);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: var(--byf-cream);
    background: var(--byf-surface);
    border: 1px solid var(--byf-border-lime);
    padding: 11px 24px;
    border-radius: 100px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.2s ease;
}

.bf-flip-toggle-btn:hover {
    border-color: var(--byf-lime);
    color: var(--byf-lime);
    background: var(--byf-surface-high);
    box-shadow: 0 0 16px var(--byf-lime-glow);
}

.bf-flip-toggle-btn .flip-icon {
    width: 16px;
    height: 16px;
    display: inline-block;
    vertical-align: middle;
    stroke: currentColor;
    transition: transform 0.4s ease;
}

.bf-flip-toggle-btn:hover .flip-icon {
    transform: rotate(180deg);
}

/* ─── SECTION COMMONS ─── */
.bf-section-num {
    font-family: var(--ui);
    font-size: 11.5px;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--byf-lime);
    display: block;
    margin-bottom: 16px;
    text-transform: uppercase;
}

.bf-h2 {
    font-family: var(--display);
    font-size: clamp(28px, 3.6vw, 46px);
    font-weight: 400;
    line-height: 1.18;
    color: var(--byf-cream);
    margin-bottom: 22px;
}

.bf-h2 em {
    font-style: italic;
    color: var(--byf-lime);
}

.bf-section-lead {
    font-family: var(--read);
    font-size: 17.5px;
    line-height: 1.75;
    color: var(--byf-text-dim);
    max-width: 740px;
}

/* ─── /01 APP FEATURES VISUAL SHOWCASE (INTERACTIVE PHONE MOCKUP) ─── */
.bf-app-showcase-section {
    border-top: 1px solid var(--byf-border);
    background: linear-gradient(180deg, var(--byf-bg) 0%, var(--byf-surface) 100%);
    padding: 110px 0;
}

/* Feature Switcher Tabs */
.bf-showcase-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin: 44px 0 54px;
    flex-wrap: wrap;
}

.bf-showcase-tab {
    padding: 10px 22px;
    border-radius: 100px;
    background: var(--byf-surface);
    border: 1px solid var(--byf-border);
    color: var(--byf-text-dim);
    font-family: var(--ui);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.04em;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.bf-showcase-tab:hover {
    border-color: var(--byf-lime);
    color: var(--byf-cream);
    background: var(--byf-surface-high);
}

.bf-showcase-tab.active {
    background: var(--byf-lime);
    color: var(--byf-on-lime);
    border-color: var(--byf-lime);
    box-shadow: 0 4px 18px var(--byf-lime-glow);
}

.bf-tab-icon {
    width: 17px;
    height: 17px;
    fill: var(--byf-lime) !important;
    color: var(--byf-lime) !important;
    flex-shrink: 0;
    display: inline-block;
    vertical-align: middle;
    transition: transform 0.2s ease, fill 0.2s ease;
}

.bf-tab-icon path {
    fill: inherit !important;
}

.bf-showcase-tab.active .bf-tab-icon,
.bf-showcase-tab.active .bf-tab-icon path {
    fill: #141708 !important;
    color: #141708 !important;
}

.bf-showcase-tab:hover .bf-tab-icon {
    transform: scale(1.15);
}

/* Phone Mockup Layout */
.bf-device-stage {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 64px;
    align-items: center;
    width: min(1140px, calc(100% - 48px));
    margin: 0 auto;
}

@media (max-width: 960px) {
    .bf-device-stage { grid-template-columns: 1fr; gap: 48px; }
}

.bf-phone-frame {
    width: 100%;
    max-width: 360px;
    height: 720px;
    background: #0E0A07;
    border: 10px solid #281F17;
    border-radius: 46px;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8), inset 0 0 0 2px rgba(255, 255, 255, 0.08);
    position: relative;
    overflow: hidden;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

/* Dynamic Island / Speaker Notch */
.bf-phone-notch {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    width: 110px;
    height: 22px;
    background: #000000;
    border-radius: 20px;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.bf-phone-notch-dot {
    width: 8px; height: 8px;
    background: #17110C;
    border-radius: 50%;
    border: 1px solid #333;
}

/* Phone Screen Canvas */
.bf-phone-screen {
    width: 100%;
    height: 100%;
    background: #17110C;
    overflow-y: auto;
    position: relative;
    padding-top: 40px;
    padding-bottom: 24px;
    box-sizing: border-box;
    scrollbar-width: none;
}
.bf-phone-screen::-webkit-scrollbar { display: none; }

/* Phone Screen Panel States */
.bf-screen-panel {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 16px 20px;
    box-sizing: border-box;
}

.bf-screen-panel.active {
    display: block;
    opacity: 1;
}

/* Feature Details Column */
.bf-device-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.bf-feature-pill {
    align-self: flex-start;
    padding: 5px 14px;
    border-radius: 100px;
    font-family: var(--ui);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    background: var(--byf-lime-container);
    color: var(--byf-lime);
    border: 1px solid var(--byf-border-lime);
}

.bf-device-details h3 {
    font-family: var(--display);
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 400;
    line-height: 1.2;
    color: var(--byf-cream);
    margin: 0;
}

.bf-device-details p {
    font-family: var(--read);
    font-size: 16.5px;
    line-height: 1.75;
    color: var(--byf-text-dim);
    margin: 0;
}

.bf-feature-specs {
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bf-spec-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-family: var(--read);
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--byf-bone);
}

.bf-spec-item strong {
    color: var(--byf-cream);
}

.bf-spec-bullet {
    color: var(--byf-lime);
    font-size: 18px;
    line-height: 1;
}

/* ─── SCREEN 1: NOW PLAYING PLAYER ─── */
.bf-phone-player {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    text-align: center;
}

.bf-player-nav {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 4px;
}

.bf-player-chapter-chip {
    font-family: var(--ui);
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.14em;
    padding: 4px 12px;
    border-radius: 100px;
    background: #281C10;
    color: var(--byf-lime);
    border: 1px solid var(--byf-border-lime);
}

.bf-player-card-stack {
    width: 200px;
    height: 250px;
    margin: 10px 0;
    position: relative;
}

.bf-player-stack-under {
    position: absolute;
    inset: 8px 12px -8px -12px;
    background: #2C221A;
    border-radius: 12px;
    border: 1px solid #3B2E23;
    opacity: 0.6;
}

.bf-player-stack-main {
    position: absolute;
    inset: 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.6);
    border: 1px solid var(--byf-border);
}

.bf-player-stack-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.bf-player-titles {
    width: 100%;
    overflow: hidden;
    margin-top: 4px;
}

.bf-marquee-rail {
    white-space: nowrap;
    overflow: hidden;
}

.bf-marquee-rail span {
    display: inline-block;
    font-family: var(--display);
    font-size: 17px;
    font-weight: 600;
    color: var(--byf-cream);
    animation: bf-marquee 16s linear infinite;
}

.bf-player-subtitle {
    font-family: var(--ui);
    font-size: 12px;
    color: var(--byf-text-dim);
    margin-top: 2px;
}

.bf-player-scrub-wrap {
    width: 100%;
    margin-top: 6px;
}

.bf-player-bar {
    width: 100%;
    height: 4px;
    background: #3B2E23;
    border-radius: 2px;
    overflow: hidden;
    position: relative;
}

.bf-player-progress {
    width: 38%;
    height: 100%;
    background: var(--byf-lime);
}

.bf-player-timestamps {
    display: flex;
    justify-content: space-between;
    font-family: var(--ui);
    font-size: 10.5px;
    color: var(--byf-text-subtle);
    margin-top: 6px;
}

.bf-player-controls-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 22px;
    margin-top: 8px;
}

.bf-p-ctrl-btn {
    background: none;
    border: none;
    color: var(--byf-cream);
    font-size: 16px;
    cursor: pointer;
}

.bf-p-play-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--byf-lime);
    color: var(--byf-on-lime);
    border: none;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px var(--byf-lime-glow);
}

/* Ambient Bed Locked Slider */
.bf-ambient-mixer-module {
    width: 100%;
    background: #20170F;
    border: 1px solid #3B2E23;
    border-radius: 10px;
    padding: 10px 14px;
    margin-top: 10px;
    text-align: left;
}

.bf-ambient-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--ui);
    font-size: 10.5px;
    color: var(--byf-bone);
    font-weight: 700;
}

.bf-locked-pill {
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--byf-lime-container);
    color: var(--byf-lime);
    font-size: 9px;
    letter-spacing: 0.08em;
}

.bf-ambient-track {
    width: 100%;
    height: 5px;
    background: #382C22;
    border-radius: 3px;
    position: relative;
    margin-top: 8px;
}

.bf-ambient-fill {
    width: 35%;
    height: 100%;
    background: var(--byf-sage);
    border-radius: 3px;
}

.bf-ambient-max-marker {
    position: absolute;
    left: 50%;
    top: -3px;
    bottom: -3px;
    width: 2px;
    background: var(--byf-lime);
}

/* ─── SCREEN 2: CIRCADIAN HOME & FLOATING DOCK ─── */
.bf-circadian-feed {
    display: flex;
    flex-direction: column;
    gap: 14px;
    text-align: left;
}

.bf-circ-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bf-circ-greeting {
    font-family: var(--display);
    font-size: 18px;
    color: var(--byf-cream);
    font-weight: 500;
}

.bf-circ-phase {
    font-family: var(--ui);
    font-size: 10px;
    color: var(--byf-lime);
    font-weight: 700;
    letter-spacing: 0.1em;
}

.bf-hero-shelf-card {
    background: #241A12;
    border: 1px solid #3B2E23;
    border-radius: 12px;
    padding: 14px;
    display: flex;
    gap: 12px;
    align-items: center;
}

.bf-hero-shelf-thumb {
    width: 60px;
    height: 80px;
    border-radius: 6px;
    overflow: hidden;
    flex-shrink: 0;
}

.bf-hero-shelf-thumb img {
    width: 100%; height: 100%; object-fit: cover;
}

.bf-hero-shelf-info h4 {
    font-family: var(--display);
    font-size: 15px;
    color: var(--byf-cream);
    margin: 0 0 2px;
}

.bf-hero-shelf-info p {
    font-family: var(--ui);
    font-size: 11px;
    color: var(--byf-text-dim);
    margin: 0 0 6px;
}

.bf-mini-listen-btn {
    padding: 4px 10px;
    background: var(--byf-lime);
    color: var(--byf-on-lime);
    border-radius: 4px;
    font-family: var(--ui);
    font-size: 10.5px;
    font-weight: 800;
    display: inline-block;
}

/* Floating Island Dock on Home */
.bf-floating-dock-preview {
    margin-top: 18px;
    background: rgba(36, 26, 18, 0.95);
    border: 1px solid var(--byf-border-lime);
    border-radius: 100px;
    padding: 8px 14px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 8px 24px rgba(0,0,0,0.6);
}

.bf-dock-left {
    display: flex;
    align-items: center;
    gap: 10px;
    overflow: hidden;
}

.bf-dock-thumb {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.bf-dock-thumb img { width: 100%; height: 100%; object-fit: cover; }

.bf-dock-title {
    font-family: var(--display);
    font-size: 11.5px;
    color: var(--byf-cream);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bf-dock-play {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--byf-lime);
    color: var(--byf-on-lime);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}

/* ─── SCREEN 3: ANDROID WIDGET ─── */
.bf-android-launcher-mock {
    background: #110B07;
    border-radius: 16px;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.bf-widget-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--ui);
    font-size: 10.5px;
    color: var(--byf-text-subtle);
}

.bf-widget-card-container {
    background: #241A12;
    border: 1px solid #3B2E23;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    text-align: left;
}

.bf-widget-type-pill {
    padding: 3px 8px;
    border-radius: 4px;
    background: rgba(217, 119, 70, 0.15);
    color: var(--byf-terracotta);
    font-family: var(--ui);
    font-size: 9.5px;
    font-weight: 800;
    letter-spacing: 0.08em;
    display: inline-block;
    margin-bottom: 8px;
}

.bf-widget-prompt {
    font-family: var(--display);
    font-size: 14px;
    line-height: 1.5;
    color: var(--byf-cream);
    margin-bottom: 12px;
}

.bf-widget-cta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 10px;
    border-top: 1px solid rgba(250, 245, 235, 0.08);
    font-family: var(--ui);
    font-size: 11px;
    color: var(--byf-lime);
    font-weight: 700;
}

/* ─── SCREEN 4: THE GITA ORACLE ─── */
.bf-gita-oracle-mock {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bf-gita-shloka-card {
    background: #241C10;
    border: 1px solid rgba(216, 170, 86, 0.35);
    border-radius: 12px;
    padding: 16px;
}

.bf-gita-shloka-sanskrit {
    font-family: var(--devanagari);
    font-size: 16px;
    line-height: 1.6;
    color: var(--byf-amber);
    margin-bottom: 8px;
}

.bf-gita-model-title {
    font-family: var(--display);
    font-size: 15px;
    font-weight: 600;
    color: var(--byf-cream);
    margin-bottom: 6px;
}

.bf-gita-model-desc {
    font-family: var(--read);
    font-size: 12.5px;
    line-height: 1.6;
    color: var(--byf-text-dim);
}

.bf-gita-microaction {
    background: rgba(0, 0, 0, 0.3);
    border-left: 2px solid var(--byf-amber);
    padding: 8px 10px;
    margin-top: 10px;
    font-family: var(--read);
    font-size: 12px;
    color: var(--byf-bone);
}

/* ─── SCREEN 5: SCRIPT READER MODE ─── */
.bf-script-reader-mock {
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bf-reader-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--byf-border);
}

.bf-script-toggle-chip {
    padding: 3px 10px;
    border-radius: 100px;
    background: var(--byf-surface-high);
    border: 1px solid var(--byf-border-lime);
    color: var(--byf-lime);
    font-family: var(--ui);
    font-size: 10px;
    font-weight: 800;
}

.bf-reader-body {
    font-family: var(--display);
    font-size: 14px;
    line-height: 1.8;
    color: var(--byf-bone);
}

.bf-reader-highlight {
    background: rgba(212, 254, 25, 0.15);
    color: var(--byf-lime);
    border-radius: 2px;
    padding: 0 4px;
    font-weight: 600;
}

/* ─── /02 THE 5 EMOTIONAL SHELVES ─── */
.bf-feelings {
    border-top: 1px solid var(--byf-border);
    background: var(--byf-bg);
}

.bf-feelings-grid {
    width: min(1200px, calc(100% - 48px));
    margin: 56px auto 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.bf-feeling {
    background: var(--byf-surface);
    border: 1px solid var(--byf-border);
    padding: 32px 28px;
    border-radius: 12px;
    transition: all 0.25s ease;
}

.bf-feeling:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--byf-border-lime);
}

.bf-feeling-tag {
    font-family: var(--ui);
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: 0.14em;
    margin-bottom: 14px;
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid;
    text-transform: uppercase;
}

.bf-feeling-tag.periwinkle { color: var(--byf-periwinkle); border-color: rgba(130, 155, 180, 0.3); background: rgba(130, 155, 180, 0.1); }
.bf-feeling-tag.sage       { color: var(--byf-sage);       border-color: rgba(126, 155, 119, 0.3); background: rgba(126, 155, 119, 0.1); }
.bf-feeling-tag.terracotta { color: var(--byf-terracotta); border-color: rgba(217, 119, 70, 0.3);  background: rgba(217, 119, 70, 0.1); }
.bf-feeling-tag.rose       { color: var(--byf-rose);       border-color: rgba(199, 138, 141, 0.3); background: rgba(199, 138, 141, 0.1); }
.bf-feeling-tag.amber      { color: var(--byf-amber);      border-color: rgba(216, 170, 86, 0.3);  background: rgba(216, 170, 86, 0.1); }

.bf-feeling h3 {
    font-family: var(--display);
    font-size: 21px;
    font-weight: 500;
    color: var(--byf-cream);
    margin-bottom: 10px;
}

.bf-feeling p {
    font-family: var(--read);
    font-size: 14.5px;
    line-height: 1.65;
    color: var(--byf-text-dim);
}

.bf-shelf-examples {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--byf-border-subtle);
    font-family: var(--ui);
    font-size: 12px;
    color: var(--byf-bone);
    font-style: italic;
}

/* ─── /03 ARCHITECTURE & PERFORMANCE ─── */
.bf-how {
    border-top: 1px solid var(--byf-border);
    background: var(--byf-surface);
}

.bf-how-grid {
    width: min(1200px, calc(100% - 48px));
    margin: 56px auto 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 0;
}

.bf-how-step {
    display: grid;
    grid-template-columns: 80px 1fr;
    gap: 32px;
    padding: 38px 0;
    border-bottom: 1px solid var(--byf-border);
    align-items: start;
}

.bf-how-step:last-child { border-bottom: none; }

@media (max-width: 600px) {
    .bf-how-step { grid-template-columns: 1fr; gap: 12px; }
}

.bf-how-num {
    font-family: var(--display);
    font-size: 34px;
    font-weight: 400;
    color: var(--byf-lime);
    opacity: 0.85;
}

.bf-how-step h3 {
    font-family: var(--display);
    font-size: 21px;
    font-weight: 500;
    color: var(--byf-cream);
    margin-bottom: 10px;
}

.bf-how-step p {
    font-family: var(--read);
    font-size: 15px;
    line-height: 1.7;
    color: var(--byf-text-dim);
}

/* ─── /04 MEMBERSHIP & SUBSCRIPTION PLANS ─── */
.bf-pricing-section {
    border-top: 1px solid var(--byf-border);
    background: var(--byf-bg);
    padding: 120px 0;
}

/* Pay Once Banner */
.bf-pay-once-alert {
    width: min(840px, calc(100% - 48px));
    margin: 32px auto 20px;
    background: rgba(58, 62, 20, 0.35);
    border: 1px solid #57651C;
    border-radius: 14px;
    padding: 14px 22px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-sizing: border-box;
}

.bf-pay-once-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.bf-pay-once-icon svg {
    display: block;
}

.bf-pay-once-content {
    display: flex;
    flex-direction: column;
    gap: 3px;
    text-align: left;
}

.bf-pay-once-content strong {
    font-family: var(--ui);
    font-size: 13.5px;
    font-weight: 800;
    color: var(--byf-lime);
    letter-spacing: 0.04em;
}

.bf-pay-once-content span {
    font-family: var(--read);
    font-size: 12.5px;
    color: var(--byf-bone);
    line-height: 1.5;
}

/* 4 Core Value Bullets */
.bf-membership-core-pills {
    width: min(960px, calc(100% - 48px));
    margin: 0 auto 44px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.bf-core-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: #231B13;
    border: 1px solid #3B2E23;
    border-radius: 100px;
    padding: 8px 16px;
    font-family: var(--ui);
    font-size: 12px;
    font-weight: 700;
    color: var(--byf-bone);
}

.bf-core-pill .chk {
    color: var(--byf-lime);
    font-weight: 900;
}

.bf-pricing-grid {
    width: min(1080px, calc(100% - 48px));
    margin: 40px auto 0;
    display: grid;
    grid-template-columns: 1fr 1.15fr;
    gap: 32px;
    align-items: stretch;
}

.bf-pricing-grid.three-col {
    width: min(1160px, calc(100% - 48px));
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 980px) {
    .bf-pricing-grid.three-col { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
    .bf-pricing-grid { grid-template-columns: 1fr; }
}

.bf-plan-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 8px;
}

.bf-rate-highlight {
    font-family: var(--ui);
    font-size: 12px;
    color: var(--byf-lime);
    background: rgba(212, 254, 25, 0.08);
    border: 1px solid var(--byf-border-lime);
    padding: 6px 12px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: inline-block;
}

.bf-rate-highlight strong {
    color: var(--byf-cream);
    font-size: 13px;
}

.bf-pricing-card {
    background: var(--byf-surface);
    border: 1px solid var(--byf-border);
    border-radius: 16px;
    padding: 40px 36px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

.bf-pricing-card.popular {
    background: linear-gradient(180deg, #2A1F16 0%, #20170F 100%);
    border: 2px solid var(--byf-lime);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.bf-popular-badge {
    position: absolute;
    top: -12px;
    right: 32px;
    background: var(--byf-lime);
    color: var(--byf-on-lime);
    padding: 4px 14px;
    border-radius: 100px;
    font-family: var(--ui);
    font-size: 10.5px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.bf-plan-name {
    font-family: var(--display);
    font-size: 24px;
    font-weight: 500;
    color: var(--byf-cream);
    margin-bottom: 6px;
}

.bf-plan-desc {
    font-family: var(--read);
    font-size: 14px;
    color: var(--byf-text-dim);
    margin-bottom: 24px;
}

.bf-plan-price-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 8px;
}

.bf-price-num {
    font-family: var(--display);
    font-size: 46px;
    font-weight: 600;
    color: var(--byf-cream);
    line-height: 1;
}

.bf-price-period {
    font-family: var(--ui);
    font-size: 14px;
    color: var(--byf-text-dim);
}

.bf-trial-tag {
    font-family: var(--ui);
    font-size: 11px;
    font-weight: 800;
    color: var(--byf-lime);
    letter-spacing: 0.08em;
    margin-bottom: 28px;
    text-transform: uppercase;
}

.bf-plan-features-list {
    list-style: none;
    padding: 0;
    margin: 0 0 32px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bf-plan-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--read);
    font-size: 14.5px;
    color: var(--byf-bone);
}

.bf-plan-feature .chk {
    color: var(--byf-lime);
    font-weight: bold;
}

/* 4 Ethical Guarantees */
.bf-guarantee-banner {
    width: min(1080px, calc(100% - 48px));
    margin: 54px auto 0;
    background: #1B130B;
    border: 1px solid var(--byf-border);
    border-radius: 14px;
    padding: 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

@media (max-width: 860px) {
    .bf-guarantee-banner { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
    .bf-guarantee-banner { grid-template-columns: 1fr; }
}

.bf-guarantee-item h4 {
    font-family: var(--display);
    font-size: 16px;
    font-weight: 500;
    color: var(--byf-cream);
    margin-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 7px;
}

.bf-shield-inline {
    display: inline-block;
    flex-shrink: 0;
    fill: var(--byf-lime);
}

.bf-guarantee-item p {
    font-family: var(--read);
    font-size: 13px;
    line-height: 1.6;
    color: var(--byf-text-dim);
    margin: 0;
}

/* ─── /05 MULTILINGUAL SANCTUARY ─── */
.bf-languages {
    border-top: 1px solid var(--byf-border);
    background: var(--byf-surface);
}

.bf-lang-grid {
    width: min(840px, calc(100% - 48px));
    margin: 48px auto 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

@media (max-width: 680px) {
    .bf-lang-grid { grid-template-columns: 1fr; }
}

.bf-lang-card {
    background: var(--byf-bg);
    border: 1px solid var(--byf-border);
    padding: 36px 28px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.25s ease;
}

.bf-lang-card:hover { 
    border-color: var(--byf-lime); 
    transform: translateY(-2px);
}

.bf-lang-script {
    font-size: 32px;
    margin-bottom: 12px;
    display: block;
    color: var(--byf-bone);
}

.bf-lang-card h3 {
    font-family: var(--display);
    font-size: 20px;
    font-weight: 500;
    color: var(--byf-cream);
    margin-bottom: 8px;
}

.bf-lang-card p {
    font-family: var(--read);
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--byf-text-dim);
}

/* ─── /06 STATUS & GOOGLE PLAY RELEASE ─── */
.bf-status {
    border-top: 1px solid var(--byf-border);
    background: var(--byf-bg);
    text-align: center;
    padding: 100px 24px !important;
}

.bf-status-label {
    font-family: var(--ui);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.16em;
    color: var(--byf-cream);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
    padding: 8px 24px;
    border-radius: 100px;
    border: 1px solid var(--byf-border-lime);
    background: var(--byf-surface);
}

.bf-status-body {
    font-family: var(--read);
    font-size: 17.5px;
    line-height: 1.75;
    color: var(--byf-text-dim);
    max-width: 660px;
    margin: 0 auto 36px;
}

.bf-status-body strong { color: var(--byf-cream); }

/* ─── CLOSING ─── */
.bf-closing {
    border-top: 1px solid var(--byf-border);
    background: var(--byf-surface);
    text-align: center;
    padding: 80px 24px !important;
}

.bf-closing-quote {
    font-family: var(--display);
    font-size: clamp(22px, 2.8vw, 32px);
    font-weight: 300;
    font-style: italic;
    color: var(--byf-bone);
    max-width: 720px;
    margin: 0 auto 32px;
    line-height: 1.5;
}

.bf-closing-quote em {
    color: var(--byf-lime);
    font-style: italic;
}

.bf-back-link {
    font-family: var(--ui);
    font-size: 13.5px;
    font-weight: 700;
    color: var(--byf-bone);
    text-decoration: none;
    letter-spacing: 0.06em;
    transition: color 0.2s;
}

.bf-back-link:hover { color: var(--byf-lime); }

/* ─── FOOTER OVERRIDES ─── */
.byf-page .footer {
    background: var(--byf-bg);
    border-top: 1px solid var(--byf-border);
}

.byf-page .footer-grid { border-bottom-color: var(--byf-border-subtle); }
.byf-page .footer-logo { color: var(--byf-cream); }
.byf-page .footer-x { color: var(--byf-lime); }
.byf-page .footer-tagline,
.byf-page .footer-col a,
.byf-page .copyright { color: var(--byf-text-dim); }
.byf-page .footer-col-title { color: var(--byf-bone); font-weight: 700; }
.byf-page .footer-col a:hover { color: var(--byf-lime); }
.byf-page .footer-mantra .devanagari { color: var(--byf-lime); }

/* ─── DOM CONTENT VISIBILITY ─── */
.bf-feeling,
.bf-lang-card,
.bf-how-step,
.bf-pricing-card {
    content-visibility: auto;
    contain-intrinsic-size: 260px;
}