/* ==========================================================================
   PT. TIGA PILAR MUNCRAT BERSAMA - 3D BOOK PORTFOLIO STYLESHEET
   Fire Hydrant & Protection System Specialist (v5.0 Ultra-Smooth)
   ========================================================================== */

:root {
    /* Color Palette */
    --primary-red: #D32F2F;
    --primary-red-glow: rgba(211, 47, 47, 0.4);
    --dark-red: #8B0000;
    --gold-accent: #D4AF37;
    --gold-light: #FFF099;
    --gold-gradient: linear-gradient(135deg, #BF953F, #FCF6BA, #B38728, #FBF5B7, #AA771C);
    --gold-glow: rgba(212, 175, 55, 0.3);
    --cyan-accent: #00BCD4;
    
    --bg-dark: #0A0D12;
    --bg-surface: #141A24;
    --bg-card: rgba(26, 34, 46, 0.85);
    
    --paper-bg-light: #FBF8F3;
    --paper-bg-dark: #111720;
    --paper-text-light: #1D232C;
    --paper-text-dark: #E2E8F0;
    --paper-border-light: #E5DEC9;
    --paper-border-dark: #242E3D;

    --font-heading: 'Cinzel', serif;
    --font-body: 'Montserrat', sans-serif;
    --font-mono: 'Space Grotesk', sans-serif;
    
    --shadow-deep: 0 30px 60px rgba(0, 0, 0, 0.6);
    --shadow-gold: 0 0 20px rgba(212, 175, 55, 0.25);
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.4s ease;
    --book-speed: 0.65s cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* Global Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100vh;
    overflow: hidden;
    font-family: var(--font-body);
    background-color: var(--bg-dark);
    color: #FFF;
}

/* Theme Variations */
body.dark-theme {
    --page-bg: #111720;
    --page-text: #E5E9F0;
    --page-border: #242E3D;
    --page-header-bg: rgba(255,255,255,0.03);
    --card-bg: rgba(26, 34, 46, 0.85);
}

body.light-theme {
    --page-bg: #FAF7F2;
    --page-text: #222933;
    --page-border: #E5DEC9;
    --page-header-bg: rgba(0,0,0,0.02);
    --card-bg: rgba(240, 235, 225, 0.85);
}

/* Atmospheric Particles & Lighting */
.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle at 50% 50%, rgba(211, 47, 47, 0.08) 0%, rgba(10, 13, 18, 0.95) 70%);
}

.glow-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    pointer-events: none;
    z-index: 0;
    opacity: 0.4;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-red);
    top: -100px;
    left: -100px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--gold-accent);
    bottom: -150px;
    right: -150px;
}

/* Top Toolbar */
.top-toolbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    background: rgba(10, 13, 18, 0.94);
    border-bottom: 1px solid rgba(212, 175, 55, 0.25);
    z-index: 100;
}

.logo-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-icon {
    width: 44px;
    height: 44px;
    background: var(--gold-gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 1.4rem;
    box-shadow: var(--shadow-gold);
    flex-shrink: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.company-name {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1rem;
    letter-spacing: 1px;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.company-tagline {
    font-size: 0.72rem;
    color: #A0AEC0;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.toolbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.tool-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #E2E8F0;
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.tool-btn:hover {
    background: rgba(212, 175, 55, 0.15);
    border-color: var(--gold-accent);
    color: #FFF;
    transform: translateY(-2px);
}

.tool-btn i {
    color: var(--gold-accent);
}

/* Side Bookmarks Navigation */
.side-bookmarks {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 90;
}

.bookmark-btn {
    background: rgba(20, 26, 36, 0.85);
    border: 1px solid rgba(212, 175, 55, 0.3);
    color: #A0AEC0;
    padding: 10px 14px;
    border-radius: 8px 0 0 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.bookmark-btn span {
    display: none;
}

.bookmark-btn:hover,
.bookmark-btn.active {
    background: var(--primary-red);
    border-color: var(--gold-accent);
    color: #FFF;
    transform: translateX(-6px);
    box-shadow: -4px 0 15px var(--primary-red-glow);
}

.bookmark-btn:hover span,
.bookmark-btn.active span {
    display: inline-block;
}

/* 3D BOOK STAGE & CONTAINER */
.book-stage {
    position: relative;
    width: 100%;
    height: calc(100vh - 130px);
    margin-top: 70px;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 2200px;
    -webkit-perspective: 2200px;
    z-index: 10;
    overflow: hidden;
}

.mobile-spiral-binder {
    display: none;
}

.book-container {
    position: relative;
    width: 900px;
    height: 600px;
    transition: transform var(--book-speed);
    display: flex;
    justify-content: center;
    align-items: center;
    transform: translateX(-225px);
}

.book {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    transition: transform var(--book-speed);
}

/* PAPER SPREAD SYSTEM */
.paper {
    position: absolute;
    width: 450px;
    height: 100%;
    top: 0;
    left: 450px;
    transform-origin: left center;
    transform-style: preserve-3d;
    -webkit-transform-style: preserve-3d;
    transition: transform var(--book-speed);
    will-change: transform;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    cursor: pointer;
}

.paper .front,
.paper .back {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    overflow: hidden;
    border-radius: 0 12px 12px 0;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

/* Explicit Visibility & Opacity Rules to Prevent Mobile WebKit Bleed-Through */
.paper .front {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.paper .back {
    transform: rotateY(180deg);
    border-radius: 12px 0 0 12px;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Flipped State for Desktop Horizontal */
.paper.flipped {
    transform: rotateY(-180deg);
}

.paper.flipped .front {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.paper.flipped .back {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Z-Index Stacking Rules for Realistic Depth */
.paper.p1 { z-index: 7; }
.paper.p2 { z-index: 6; }
.paper.p3 { z-index: 5; }
.paper.p4 { z-index: 4; }
.paper.p5 { z-index: 3; }
.paper.p6 { z-index: 2; }
.paper.p7 { z-index: 1; }

.paper.p1.flipped, .paper.p1.flipped-vertical { z-index: 1; }
.paper.p2.flipped, .paper.p2.flipped-vertical { z-index: 2; }
.paper.p3.flipped, .paper.p3.flipped-vertical { z-index: 3; }
.paper.p4.flipped, .paper.p4.flipped-vertical { z-index: 4; }
.paper.p5.flipped, .paper.p5.flipped-vertical { z-index: 5; }
.paper.p6.flipped, .paper.p6.flipped-vertical { z-index: 6; }
.paper.p7.flipped, .paper.p7.flipped-vertical { z-index: 7; }

/* PAGE INNER STYLING */
.page-inner {
    width: 100%;
    height: 100%;
    background-color: var(--page-bg);
    color: var(--page-text);
    padding: 2.2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border: 1px solid var(--page-border);
    position: relative;
    overflow-y: auto;
}

/* Spine Shadow Overlay */
.front .page-inner::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 30px;
    height: 100%;
    background: linear-gradient(to right, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0) 100%);
    pointer-events: none;
    z-index: 20;
}

.back .page-inner::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    width: 30px;
    height: 100%;
    background: linear-gradient(to left, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0) 100%);
    pointer-events: none;
    z-index: 20;
}

/* BOOK COVER DESIGN */
.book-cover {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #8B0000 0%, #3A0000 50%, #1A0000 100%);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    border: 4px solid var(--gold-accent);
    box-shadow: inset 0 0 40px rgba(0,0,0,0.8);
}

.cover-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(rgba(212, 175, 55, 0.15) 1px, transparent 0);
    background-size: 16px 16px;
    opacity: 0.6;
}

.gold-border-frame {
    width: 100%;
    height: 100%;
    border: 2px solid var(--gold-accent);
    padding: 2.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    text-align: center;
    position: relative;
    z-index: 2;
    background: rgba(0, 0, 0, 0.4);
}

.badge-emblem {
    position: relative;
    width: 80px;
    height: 80px;
    background: var(--gold-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #000;
    font-size: 2.2rem;
    box-shadow: 0 0 25px var(--gold-glow);
}

.fire-hydrant-icon {
    position: absolute;
    font-size: 1.2rem;
    bottom: 5px;
    right: 5px;
    background: var(--primary-red);
    color: #FFF;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #FFF;
}

.cover-subtitle {
    font-family: var(--font-body);
    font-size: 0.85rem;
    letter-spacing: 4px;
    color: #E2E8F0;
    margin-top: 15px;
}

.cover-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 900;
    line-height: 1.3;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 10px 0;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.gold-divider {
    display: flex;
    gap: 15px;
    color: var(--gold-accent);
    font-size: 0.9rem;
    margin: 10px 0;
}

.cover-desc {
    font-size: 0.85rem;
    color: #CBD5E1;
    line-height: 1.5;
    max-width: 320px;
}

.cover-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.badge-year {
    background: rgba(212, 175, 55, 0.2);
    border: 1px solid var(--gold-accent);
    color: var(--gold-light);
    padding: 4px 14px;
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.click-to-open {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--gold-light);
    font-size: 0.8rem;
    animation: pulseGlow 2s infinite alternate;
}

@keyframes pulseGlow {
    0% { opacity: 0.6; transform: scale(0.98); }
    100% { opacity: 1; transform: scale(1.02); }
}

/* PAGE CONTENT HEADERS & FOOTERS */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--page-border);
    padding-bottom: 10px;
    margin-bottom: 15px;
    background: var(--page-header-bg);
}

.page-chapter {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--primary-red);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.page-heading {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    color: var(--gold-accent);
    font-weight: 700;
}

.page-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    color: var(--gold-accent);
    font-weight: 800;
    line-height: 1.3;
    border-left: 3px solid var(--primary-red);
    padding-left: 10px;
}

.lead-text {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--page-text);
}

.page-inner p {
    font-size: 0.82rem;
    line-height: 1.6;
    opacity: 0.9;
}

.page-footer {
    border-top: 1px solid var(--page-border);
    padding-top: 8px;
    display: flex;
    justify-content: flex-end;
    margin-top: 10px;
}

.page-number {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gold-accent);
}

/* CONTENT COMPONENT CARDS */
.quote-box {
    background: var(--card-bg);
    border-left: 3px solid var(--gold-accent);
    padding: 12px 16px;
    border-radius: 0 8px 8px 0;
    position: relative;
    margin: 5px 0;
}

.quote-icon {
    color: var(--gold-accent);
    font-size: 1rem;
    margin-bottom: 5px;
}

.quote-text {
    font-style: italic;
    font-size: 0.8rem !important;
}

.quote-author {
    display: block;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--primary-red);
    margin-top: 5px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 10px;
}

.stat-item {
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 10px;
    border-radius: 8px;
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--gold-accent);
}

.stat-label {
    font-size: 0.68rem;
    opacity: 0.8;
}

/* Vision & Mission Cards */
.vision-mission-cards {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vm-card {
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 12px;
    border-radius: 8px;
}

.vm-icon {
    color: var(--primary-red);
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.vm-card h3 {
    font-size: 0.9rem;
    margin-bottom: 4px;
    color: var(--gold-accent);
}

.vm-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.vm-card li {
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    gap: 6px;
}

.vm-card li i {
    color: #4ADE80;
    font-size: 0.7rem;
}

.pillars-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.pillar-box {
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 8px;
    border-radius: 6px;
    text-align: center;
}

.pillar-num {
    font-family: var(--font-mono);
    font-weight: 800;
    color: var(--primary-red);
    font-size: 0.9rem;
}

.pillar-box h4 {
    font-size: 0.75rem;
    margin: 3px 0;
    color: var(--gold-accent);
}

.pillar-box p {
    font-size: 0.68rem !important;
}

/* Services Cards */
.services-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.service-card {
    display: flex;
    gap: 12px;
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 12px;
    border-radius: 8px;
    align-items: flex-start;
}

.service-icon {
    width: 38px;
    height: 38px;
    background: var(--primary-red);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #FFF;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.service-info h3 {
    font-size: 0.85rem;
    color: var(--gold-accent);
    margin-bottom: 4px;
}

.service-info p {
    font-size: 0.76rem !important;
}

/* Maintenance Feature */
.maintenance-feature {
    display: flex;
    gap: 12px;
    background: rgba(211, 47, 47, 0.15);
    border: 1px solid rgba(211, 47, 47, 0.35);
    padding: 12px;
    border-radius: 8px;
    align-items: center;
}

.m-icon-large {
    font-size: 1.8rem;
    color: var(--primary-red);
}

.m-desc h3 {
    font-size: 0.88rem;
    color: var(--gold-accent);
}

.m-check-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.m-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
}

.m-item i {
    color: var(--gold-accent);
}

.emergency-banner {
    background: var(--primary-red);
    color: #FFF;
    padding: 10px 14px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 5px;
}

.em-icon {
    font-size: 1.4rem;
}

.em-text strong {
    font-size: 0.82rem;
    display: block;
}

.em-text p {
    font-size: 0.72rem !important;
    color: #FFE5E5 !important;
}

/* Product Cards Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.prod-card {
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 10px;
    border-radius: 8px;
    position: relative;
}

.prod-tag {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--gold-accent);
    color: #000;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
}

.prod-icon-box {
    font-size: 1.5rem;
    color: var(--primary-red);
    margin-bottom: 6px;
}

.prod-card h4 {
    font-size: 0.8rem;
    color: var(--gold-accent);
    margin-bottom: 4px;
}

.prod-spec {
    font-size: 0.7rem !important;
    opacity: 0.8;
}

.product-large-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.prod-row {
    display: flex;
    gap: 10px;
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 10px;
    border-radius: 8px;
    align-items: center;
}

.p-row-icon {
    width: 32px;
    height: 32px;
    background: rgba(212, 175, 55, 0.15);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gold-accent);
    font-size: 1rem;
    flex-shrink: 0;
}

.p-row-text h4 {
    font-size: 0.8rem;
    color: var(--gold-accent);
}

.p-row-text p {
    font-size: 0.72rem !important;
}

/* Portfolio Cards */
.portfolio-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.port-card {
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.port-img-placeholder {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #FFF;
    flex-shrink: 0;
}

.industrial-bg { background: linear-gradient(135deg, #1E293B, #334155); }
.building-bg { background: linear-gradient(135deg, #0F172A, #1E293B); }
.warehouse-bg { background: linear-gradient(135deg, #331010, #581C1C); }

.port-info {
    padding: 10px;
}

.port-cate {
    font-size: 0.65rem;
    color: var(--primary-red);
    font-weight: 700;
    text-transform: uppercase;
}

.port-info h4 {
    font-size: 0.82rem;
    color: var(--gold-accent);
}

.port-info p {
    font-size: 0.72rem !important;
}

/* Standards List */
.standards-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.std-box {
    display: flex;
    gap: 10px;
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    padding: 8px;
    border-radius: 6px;
    align-items: center;
}

.std-badge {
    background: var(--gold-gradient);
    color: #000;
    font-weight: 800;
    font-size: 0.75rem;
    padding: 6px 8px;
    border-radius: 6px;
    font-family: var(--font-mono);
    min-width: 68px;
    text-align: center;
}

.std-desc h4 {
    font-size: 0.78rem;
    color: var(--gold-accent);
}

.std-desc p {
    font-size: 0.7rem !important;
}

.cert-badges {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 10px;
}

.c-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--gold-accent);
    color: var(--gold-light);
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Workflow Steps */
.workflow-steps {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.step-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.step-num {
    width: 28px;
    height: 28px;
    background: var(--primary-red);
    color: #FFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.step-content h4 {
    font-size: 0.82rem;
    color: var(--gold-accent);
}

.step-content p {
    font-size: 0.74rem !important;
}

/* Form Styling */
.quote-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.form-group label {
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--gold-accent);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--page-border);
    color: var(--page-text);
    padding: 8px 10px;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.78rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--gold-accent);
    box-shadow: 0 0 8px var(--gold-glow);
}

.submit-btn {
    background: #25D366;
    color: #FFF;
    border: none;
    padding: 10px;
    border-radius: 6px;
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.82rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition-fast);
    margin-top: 5px;
}

.submit-btn:hover {
    background: #1EBE57;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}

/* Contact Info & Map Mockup */
.contact-info-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.c-info-item {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.c-icon {
    width: 30px;
    height: 30px;
    background: rgba(212, 175, 55, 0.15);
    color: var(--gold-accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.c-detail strong {
    font-size: 0.78rem;
    display: block;
    color: var(--gold-accent);
}

.c-detail p {
    font-size: 0.72rem !important;
}

.map-mockup {
    width: 100%;
    height: 120px;
    background: linear-gradient(135deg, #1E293B, #0F172A);
    border: 1px solid var(--page-border);
    border-radius: 8px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 5px;
}

.map-overlay {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    text-align: center;
    padding: 10px;
}

.map-overlay i {
    font-size: 1.5rem;
    color: var(--primary-red);
}

.map-overlay span {
    font-size: 0.7rem;
    opacity: 0.8;
}

.direct-wa-btn {
    background: #25D366;
    color: #FFF;
    text-decoration: none;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.72rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition-fast);
}

.direct-wa-btn:hover {
    transform: scale(1.05);
}

/* Closing Page */
.closing-body {
    align-items: center;
    text-align: center;
    justify-content: center;
}

.fire-badge-large {
    font-size: 3.5rem;
    color: var(--gold-accent);
    margin-bottom: 10px;
}

.closing-body h2 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    color: var(--gold-accent);
}

.motto-box {
    background: var(--gold-gradient);
    color: #000;
    font-weight: 800;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin: 15px 0;
}

/* Back Cover */
.back-cover {
    background: linear-gradient(135deg, #1A0000 0%, #3A0000 50%, #8B0000 100%);
}

.back-frame {
    justify-content: center;
    gap: 15px;
}

.brand-logo-back {
    font-size: 3rem;
    color: var(--gold-accent);
}

.back-company {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    color: var(--gold-accent);
}

.back-subtitle {
    font-size: 0.8rem;
    color: #CBD5E1;
}

.gold-line {
    width: 60px;
    height: 2px;
    background: var(--gold-accent);
}

.copyright-text {
    font-size: 0.7rem;
    opacity: 0.7;
    text-align: center;
}

.qr-mockup {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    margin-top: 10px;
}

.qr-code-box {
    width: 60px;
    height: 60px;
    background: #FFF;
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    border-radius: 6px;
}

.qr-mockup span {
    font-size: 0.65rem;
    color: var(--gold-light);
}

/* BOTTOM CONTROLS */
.bottom-controls {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 25px;
    background: rgba(10, 13, 18, 0.94);
    border-top: 1px solid rgba(212, 175, 55, 0.25);
    z-index: 100;
}

.nav-control-btn {
    background: var(--primary-red);
    border: 1px solid var(--gold-accent);
    color: #FFF;
    padding: 8px 20px;
    border-radius: 20px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition-fast);
}

.nav-control-btn:hover {
    background: #B71C1C;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px var(--primary-red-glow);
}

.page-indicator {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--gold-accent);
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 16px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.slash {
    color: rgba(255, 255, 255, 0.3);
    margin: 0 4px;
}

/* MODAL & TOAST */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-surface);
    border: 1px solid var(--gold-accent);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    overflow: hidden;
    box-shadow: var(--shadow-deep);
}

.modal-header {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--page-border);
}

.modal-header h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--gold-accent);
    display: flex;
    align-items: center;
    gap: 8px;
}

.close-btn {
    background: none;
    border: none;
    color: #FFF;
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    padding: 15px 20px;
}

.toc-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toc-list li {
    padding: 10px 14px;
    background: var(--card-bg);
    border: 1px solid var(--page-border);
    border-radius: 8px;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-fast);
}

.toc-list li:hover {
    border-color: var(--gold-accent);
    background: rgba(212, 175, 55, 0.1);
    transform: translateX(4px);
}

.toc-num {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--primary-red);
    font-size: 0.78rem;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 80px;
    right: 20px;
    background: #25D366;
    color: #FFF;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
    transform: translateY(100px);
    opacity: 0;
    transition: var(--transition-normal);
    z-index: 300;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* RESPONSIVE DESIGN FOR TABLETS & LAPTOPS */
@media (max-width: 1024px) {
    .book-container {
        transform: scale(0.85) translateX(-225px);
    }
}

/* ==========================================================================
   MOBILE & TABLET CLEAN RESPONSIVE FIX (MAX-WIDTH: 900PX)
   ========================================================================== */
@media (max-width: 900px) {
    /* Compact, Non-Overlapping Top Toolbar */
    .top-toolbar {
        height: 60px;
        padding: 0 0.8rem;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .logo-brand {
        gap: 8px;
        flex: 1;
        min-width: 0;
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
        border-radius: 8px;
    }

    .brand-text {
        display: flex;
        flex-direction: column;
        overflow: hidden;
    }

    .company-name {
        font-size: 0.78rem;
        font-weight: 800;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        letter-spacing: 0.5px;
    }

    .company-tagline {
        font-size: 0.58rem;
        letter-spacing: 0.5px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .toolbar-actions {
        gap: 4px;
        flex-shrink: 0;
    }

    .tool-btn {
        padding: 6px 10px;
        font-size: 0.82rem;
        border-radius: 6px;
    }

    .tool-btn .btn-text {
        display: none !important;
    }

    .side-bookmarks {
        display: none;
    }

    /* Stage Layout with Spacing below Navbar */
    .book-stage {
        perspective: 1600px;
        -webkit-perspective: 1600px;
        margin-top: 60px;
        height: calc(100vh - 120px);
        padding-top: 20px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Gold Spiral Binder Rings Graphic */
    .mobile-spiral-binder {
        display: flex;
        justify-content: space-around;
        position: absolute;
        top: -14px;
        left: 8%;
        right: 8%;
        z-index: 80;
    }

    .mobile-spiral-binder .ring {
        width: 14px;
        height: 28px;
        background: linear-gradient(180deg, #FFE066 0%, #D4AF37 50%, #8B6508 100%);
        border-radius: 7px;
        border: 2px solid #0A0D12;
        box-shadow: 0 4px 8px rgba(0,0,0,0.6);
    }

    /* Mobile Vertical Container Centered */
    .book-container {
        width: 90vw !important;
        max-width: 390px !important;
        height: 72vh !important;
        max-height: 550px !important;
        transform: none !important;
        margin: 0 auto !important;
        border: 3px solid var(--gold-accent);
        border-radius: 16px;
        box-shadow: 0 20px 45px rgba(0, 0, 0, 0.85);
        background: #0A0D12;
    }

    /* Convert Papers into Top-Bound Vertical Flip Pages */
    .paper {
        width: 100% !important;
        height: 100% !important;
        left: 0 !important;
        top: 0 !important;
        transform-origin: top center !important;
        border-radius: 12px !important;
        transition: transform 0.65s cubic-bezier(0.4, 0.0, 0.2, 1) !important;
        will-change: transform !important;
    }

    .paper .front,
    .paper .back {
        width: 100% !important;
        height: 100% !important;
        border-radius: 12px !important;
    }

    /* Perforated Top Edge for Notepad Feel */
    .front .page-inner,
    .back .page-inner,
    .book-cover {
        border-top: 4px dashed rgba(212, 175, 55, 0.4) !important;
    }

    /* Vertical Back Face Rotation */
    .paper .back {
        transform: rotateX(180deg) !important;
    }

    /* Flipped Paper State on Mobile (Vertical Flip Upward over top rings) */
    .paper.flipped,
    .paper.flipped-vertical {
        transform: rotateX(-180deg) !important;
    }

    .paper.flipped .front,
    .paper.flipped-vertical .front {
        opacity: 0 !important;
        visibility: hidden !important;
        pointer-events: none !important;
    }

    .paper.flipped .back,
    .paper.flipped-vertical .back {
        opacity: 1 !important;
        visibility: visible !important;
        pointer-events: auto !important;
    }

    /* Mobile Page Content Padding & Sizing */
    .page-inner {
        padding: 1.5rem 1.1rem 1.1rem 1.1rem;
    }

    /* Top Clamp Shadow Gradient */
    .front .page-inner::before {
        left: 0;
        top: 0;
        width: 100%;
        height: 25px;
        background: linear-gradient(to bottom, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0) 100%);
    }

    .back .page-inner::before {
        left: 0;
        bottom: 0;
        width: 100%;
        height: 25px;
        background: linear-gradient(to top, rgba(0,0,0,0.35) 0%, rgba(0,0,0,0) 100%);
    }

    .section-title {
        font-size: 1.1rem;
    }

    .cover-title {
        font-size: 1.25rem;
    }

    .stat-number {
        font-size: 1.1rem;
    }

    .stat-label {
        font-size: 0.62rem;
    }

    .bottom-controls {
        height: 60px;
        padding: 0 1rem;
        gap: 15px;
    }

    .btn-text {
        display: none !important;
    }

    .nav-control-btn {
        padding: 10px 18px;
    }
}