/* ============================================
   BUKU TAMU DIGITAL - Landing Page Styles
   Cerita Lakara
   ============================================ */

/* --- CSS Variables --- */
:root {
    --primary: #8B6F4E;
    --primary-light: #A6896A;
    --primary-dark: #6B5438;
    --accent: #C9A96E;
    --accent-light: #E8D5B0;
    --dark: #1a1a2e;
    --dark-2: #2d2d44;
    --text: #4a4a5a;
    --text-light: #7a7a8a;
    --bg: #FDFBF8;
    --bg-alt: #F5F0EA;
    --white: #ffffff;
    --border: #e8e0d6;
    --shadow: 0 4px 30px rgba(139, 111, 78, 0.08);
    --shadow-lg: 0 20px 60px rgba(139, 111, 78, 0.12);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    display: block;
    object-fit: cover;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul { list-style: none; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

/* --- Typography --- */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    color: var(--dark);
    line-height: 1.3;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 16px;
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 12px;
    position: relative;
    padding-left: 40px;
}

.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 28px;
    height: 2px;
    background: var(--accent);
}

.section-header.center {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-header.center .section-tag {
    padding-left: 0;
}

.section-header.center .section-tag::before {
    display: none;
}

.section-header p {
    color: var(--text-light);
    font-size: 1.05rem;
    margin-top: 8px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 50px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 111, 78, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255,255,255,0.15);
    color: var(--white);
    border-color: rgba(255,255,255,0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
}

.btn-nav {
    background: var(--primary);
    color: var(--white) !important;
    padding: 10px 24px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

.btn-nav:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-whatsapp {
    background: #25D366;
    color: var(--white);
    border-color: #25D366;
}

.btn-whatsapp:hover {
    background: #1da851;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.3);
}

.btn-instagram {
    background: linear-gradient(45deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
    color: var(--white);
    border-color: transparent;
}

.btn-instagram:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(225, 48, 108, 0.3);
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 12px 0;
    box-shadow: 0 2px 20px rgba(0,0,0,0.06);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
}

.navbar.scrolled .logo {
    color: var(--dark);
}

.logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--white);
    border-radius: 10px;
    font-size: 1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.85);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

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

.navbar.scrolled .nav-links a {
    color: var(--text);
}

.navbar.scrolled .nav-links a:hover {
    color: var(--primary);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
    border-radius: 2px;
}

.navbar.scrolled .hamburger span {
    background: var(--dark);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-bg svg,
.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26, 26, 46, 0.85) 0%,
        rgba(107, 84, 56, 0.7) 100%
    );
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 120px 24px 80px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.15);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--accent-light);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--white);
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero h1 .highlight {
    color: var(--accent);
    position: relative;
}

.hero-desc {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.8);
    max-width: 550px;
    margin: 0 auto 36px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2rem;
    color: var(--accent);
    font-family: var(--font-heading);
}

.stat p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.2);
}

/* ============================================
   TENTANG
   ============================================ */
.tentang-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.tentang-images {
    position: relative;
}

.tentang-img-main {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.tentang-img-main svg,
.tentang-img-main img {
    width: 100%;
    height: 450px;
}

.tentang-img-main svg {
    height: 450px;
    border-radius: var(--radius);
}

.tentang-img-small {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 200px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 5px solid var(--white);
}

.tentang-img-small svg,
.tentang-img-small img {
    width: 100%;
    height: 160px;
}

.tentang-img-small svg {
    border-radius: var(--radius);
}

.experience-badge {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 110px;
    height: 110px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
    box-shadow: var(--shadow-lg);
    border: 4px solid var(--white);
}

.exp-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.exp-text {
    font-size: 0.7rem;
    text-align: center;
    line-height: 1.3;
}

.tentang-content p {
    color: var(--text-light);
    margin-bottom: 16px;
    font-size: 1rem;
}

.tentang-features {
    margin-top: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.tf-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.tf-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
}

.tf-item h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.tf-item p {
    font-size: 0.9rem;
    margin: 0;
}

/* ============================================
   FITUR
   ============================================ */
.fitur {
    background: var(--bg-alt);
}

.fitur-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.fitur-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.fitur-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.fitur-icon {
    height: 200px;
    overflow: hidden;
}

.fitur-icon svg,
.fitur-icon img {
    width: 100%;
    height: 100%;
    transition: var(--transition);
}

.fitur-card:hover .fitur-icon svg,
.fitur-card:hover .fitur-icon img {
    transform: scale(1.05);
}

.fitur-body {
    padding: 24px;
}

.fitur-body h3 {
    font-size: 1.15rem;
    margin-bottom: 8px;
}

.fitur-body p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ============================================
   CARA KERJA
   ============================================ */
.steps-wrapper {
    display: flex;
    align-items: stretch;
    gap: 0;
    justify-content: center;
}

.step-card {
    flex: 1;
    max-width: 340px;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    position: relative;
    transition: var(--transition);
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    position: absolute;
    top: 16px;
    left: 16px;
    width: 44px;
    height: 44px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1rem;
    z-index: 2;
}

.step-img {
    height: 200px;
    overflow: hidden;
}

.step-img svg,
.step-img img {
    width: 100%;
    height: 100%;
}

.step-content {
    padding: 24px;
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.step-connector {
    display: flex;
    align-items: center;
    padding: 0 8px;
    color: var(--accent);
    font-size: 1.2rem;
}

/* ============================================
   GALLERY
   ============================================ */
.gallery {
    background: var(--bg-alt);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 220px);
    gap: 16px;
}

.gallery-item {
    border-radius: var(--radius-sm);
    overflow: hidden;
    position: relative;
    cursor: pointer;
}

.gallery-item.large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item svg,
.gallery-item img {
    width: 100%;
    height: 100%;
    transition: var(--transition);
}

.gallery-item:hover svg,
.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26,26,46,0.7), transparent);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay span {
    color: var(--white);
    font-weight: 600;
    font-size: 0.95rem;
}

/* ============================================
   PRICING
   ============================================ */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: start;
}

.pricing-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px 32px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    border: 2px solid transparent;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
    border-color: var(--primary);
    transform: scale(1.03);
    box-shadow: var(--shadow-lg);
}

.pricing-card.popular:hover {
    transform: scale(1.03) translateY(-5px);
}

.popular-tag {
    position: absolute;
    top: -14px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: var(--white);
    padding: 6px 24px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.pricing-badge {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary);
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
    margin-bottom: 8px;
}

.pricing-price .currency {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
}

.pricing-price .amount {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1;
}

.pricing-desc {
    font-size: 0.9rem;
    color: var(--text-light);
}

.pricing-features ul {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.92rem;
}

.pricing-features li i {
    color: var(--primary);
    font-size: 0.8rem;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    border-radius: 50%;
}

.pricing-card .btn {
    width: 100%;
    justify-content: center;
}

/* --- Add-ons --- */
.addons-section {
    margin-top: 80px;
    text-align: center;
}

.addons-section h3 {
    font-size: 1.6rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.addons-section h3 i {
    color: var(--primary);
}

.addons-section > p {
    color: var(--text-light);
    margin-bottom: 36px;
}

.addons-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
}

.addon-item {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 20px 24px;
    transition: var(--transition);
    text-align: left;
}

.addon-item:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.addon-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-alt);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
}

.addon-info {
    flex: 1;
}

.addon-info h4 {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

.addon-info p {
    font-size: 0.82rem;
    color: var(--text-light);
}

.addon-price {
    font-weight: 700;
    color: var(--primary);
    font-size: 0.95rem;
    white-space: nowrap;
}

/* ============================================
   NOTES
   ============================================ */
.notes {
    background: var(--bg-alt);
}

.notes-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.notes-visual {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
}

.notes-visual svg,
.notes-visual img {
    width: 100%;
    height: 500px;
    border-radius: var(--radius);
}

.notes-overlay-card {
    position: absolute;
    bottom: 24px;
    left: 24px;
    right: 24px;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    padding: 20px 24px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    color: var(--dark);
}

.notes-overlay-card i {
    color: #e74c3c;
    font-size: 1.2rem;
}

.notes-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 32px;
}

.note-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.note-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--white);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    box-shadow: var(--shadow);
}

.note-item h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.note-item p {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ============================================
   FAQ
   ============================================ */
.faq-wrapper {
    max-width: 750px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--white);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-question {
    width: 100%;
    padding: 20px 24px;
    background: none;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    text-align: left;
    gap: 16px;
}

.faq-question i {
    color: var(--primary);
    transition: var(--transition);
    font-size: 0.85rem;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.8;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

/* ============================================
   CTA
   ============================================ */
.cta {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
}

.cta-bg {
    position: absolute;
    inset: 0;
}

.cta-bg svg,
.cta-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26, 26, 46, 0.9) 0%,
        rgba(107, 84, 56, 0.8) 100%
    );
}

.cta-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--white);
    margin-bottom: 16px;
}

.cta-content p {
    color: rgba(255,255,255,0.8);
    font-size: 1.05rem;
    margin-bottom: 36px;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--dark);
    padding: 80px 0 0;
    color: rgba(255,255,255,0.7);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-socials {
    display: flex;
    gap: 12px;
}

.footer-socials a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    color: rgba(255,255,255,0.7);
    transition: var(--transition);
}

.footer-socials a:hover {
    background: var(--primary);
    color: var(--white);
}

.footer-links h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links li,
.footer-links a {
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 0.85rem;
}

/* --- Back to Top --- */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .tentang-grid {
        gap: 50px;
    }

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

    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }

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

@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }

    .hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 24px;
        box-shadow: -10px 0 40px rgba(0,0,0,0.1);
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        color: var(--text) !important;
        font-size: 1rem;
    }

    .tentang-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .tentang-images {
        max-width: 500px;
        margin: 0 auto;
    }

    .fitur-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin: 0 auto;
    }

    .steps-wrapper {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }

    .step-connector {
        transform: rotate(90deg);
        padding: 0;
    }

    .step-card {
        max-width: 100%;
        width: 100%;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(3, 180px);
    }

    .gallery-item.large {
        grid-column: span 2;
        grid-row: span 1;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 420px;
        margin: 0 auto;
    }

    .pricing-card.popular {
        transform: none;
    }

    .pricing-card.popular:hover {
        transform: translateY(-5px);
    }

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

    .notes-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .notes-visual svg,
    .notes-visual img {
        height: 350px;
    }

    .cta-content h2 {
        font-size: 1.8rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.2rem;
    }

    .hero-desc {
        font-size: 0.95rem;
    }

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

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .addon-item {
        flex-wrap: wrap;
    }

    .addon-price {
        width: 100%;
        text-align: left;
        margin-top: 8px;
        padding-left: 64px;
    }

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

    .cta-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}