/* ===================================
   LaLa GLOBAL LANGUAGE - Vietnamese LP
   =================================== */

/* CSS Custom Properties */
:root {
    --primary: #da251d;
    --primary-dark: #b81e18;
    --secondary: #ffcd00;
    --secondary-dark: #e6b800;
    --accent: #FFD700;
    --gradient: linear-gradient(135deg, #da251d, #c41e18);
    --gradient-vietnam: linear-gradient(135deg, #da251d, #ffcd00);

    --text-dark: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --border-color: #e0e0e0;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50px;

    --transition: 0.3s ease;

    --font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

img {
    max-width: 100%;
    height: auto;
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-title .highlight {
    color: var(--primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    border-radius: var(--radius-full);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-full {
    width: 100%;
}

.btn-header {
    background: var(--primary);
    color: white;
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-header:hover {
    background: var(--primary-dark);
}

/* ===================================
   Header
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 45px;
    width: auto;
}

.nav {
    display: none;
}

.nav-list {
    display: flex;
    gap: 2rem;
}

.nav-list a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-dark);
}

.nav-list a:hover {
    color: var(--primary);
}

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

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--text-dark);
    transition: var(--transition);
}

.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 Section
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 100px 0 60px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/AdobeStock_135565686_Preview.jpeg') center center / cover no-repeat;
    z-index: -2;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(218, 37, 29, 0.9) 0%, rgba(180, 30, 24, 0.9) 100%);
    z-index: -1;
}

.hero-content {
    text-align: center;
}

.hero-label {
    display: inline-block;
    background: var(--secondary);
    color: #da251d;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: white;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

.hero-cta {
    margin-bottom: 3rem;
}

.hero-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 0.75rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-lg);
    display: inline-flex;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.8);
}

/* ===================================
   Sections Common
   =================================== */
.section {
    padding: 80px 0;
}

.section:nth-child(even) {
    background: var(--bg-light);
}

/* ===================================
   Reasons Section
   =================================== */
.reasons-grid {
    display: grid;
    gap: 2rem;
}

.reason-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.reason-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.reason-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.reason-icon svg {
    width: 32px;
    height: 32px;
}

.reason-business .reason-icon {
    background: linear-gradient(135deg, #da251d20, #c41e1820);
    color: #da251d;
}

.reason-hobby .reason-icon {
    background: linear-gradient(135deg, #ffcd0020, #e6b80020);
    color: #e6b800;
}

.reason-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.reason-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
}

.reason-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
}

/* ===================================
   Features Section
   =================================== */
.features-grid {
    display: grid;
    gap: 1.5rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.feature-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.1;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-vietnam);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.feature-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* ===================================
   Pricing Section
   =================================== */
.pricing-grid {
    display: grid;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 2rem;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-popular {
    border: 2px solid var(--primary);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-vietnam);
    color: white;
    padding: 4px 20px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
}

.pricing-header {
    margin-bottom: 1.5rem;
}

.pricing-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

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

.pricing-price {
    margin-bottom: 1.5rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

.price-unit {
    font-size: 1rem;
    color: var(--text-light);
}

.pricing-features {
    text-align: left;
    margin-bottom: 1.5rem;
}

.pricing-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-light);
    font-size: 0.95rem;
}

.pricing-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.pricing-notes {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.pricing-notes p {
    margin-bottom: 0.5rem;
}

/* ===================================
   Flow Section
   =================================== */
.flow-steps {
    max-width: 700px;
    margin: 0 auto;
}

.flow-step {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem 0;
    position: relative;
}

.flow-step:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 60px;
    bottom: 0;
    width: 2px;
    background: var(--border-color);
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-vietnam);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content {
    padding-top: 0.5rem;
}

.step-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.step-desc {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===================================
   FAQ Section
   =================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    color: var(--text-dark);
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding-bottom: 1.25rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

/* ===================================
   Contact / CTA Section
   =================================== */
.contact {
    background: var(--primary) !important;
    color: white;
    padding: 100px 0;
}

.cta-box {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    padding: 3rem 2rem;
    border: 2px solid var(--secondary);
}

.cta-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: white;
}

.cta-title .highlight {
    color: var(--accent);
}

.cta-subtitle {
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.cta-benefits {
    display: inline-block;
    text-align: left;
    margin-bottom: 2.5rem;
}

.cta-benefits li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem 0;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.95);
}

.cta-benefits .check-icon {
    width: 24px;
    height: 24px;
    min-width: 24px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--primary);
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--secondary);
    color: #da251d;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.btn-cta svg {
    transition: transform 0.3s ease;
}

.btn-cta:hover svg {
    transform: translateX(4px);
}

.cta-note {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: #8b1a15;
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand .logo {
    margin-bottom: 0.75rem;
}

.footer-brand .logo-img {
    height: 50px;
    filter: brightness(0) invert(1);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links a,
.footer-contact a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links a:hover,
.footer-contact a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.85rem;
}

/* ===================================
   Animations
   =================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===================================
   Mobile Navigation
   =================================== */
.mobile-nav {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: white;
    padding: 1rem;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav a {
    display: block;
    padding: 0.75rem 1rem;
    font-weight: 500;
    border-radius: var(--radius-md);
}

.mobile-nav a:hover {
    background: var(--bg-light);
    color: var(--primary);
}

.mobile-nav .mobile-cta {
    background: var(--gradient-vietnam);
    color: white !important;
    text-align: center;
    margin-top: 0.5rem;
}

.mobile-nav .mobile-cta:hover {
    background: var(--gradient-vietnam);
    opacity: 0.9;
}

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (min-width: 768px) {
    .section-title {
        font-size: 2.25rem;
    }

    .hero-title {
        font-size: 3.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

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

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

    .cta-box {
        padding: 4rem 3rem;
    }

    .cta-title {
        font-size: 2rem;
    }

    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .nav {
        display: block;
    }

    .hamburger {
        display: none;
    }

    .btn-header {
        display: inline-block;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .container {
        padding: 0 40px;
    }

    .section {
        padding: 100px 0;
    }

    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 4rem;
    }

    .hero-stats {
        gap: 4rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-card {
        padding: 2.5rem;
    }

    .pricing-card {
        padding: 2.5rem;
    }

    .cta-box {
        padding: 4.5rem 4rem;
    }

    .cta-title {
        font-size: 2.25rem;
    }

    .btn-cta {
        padding: 20px 50px;
        font-size: 1.2rem;
    }
}

/* Large Desktop */
@media (min-width: 1280px) {
    .features-grid {
        grid-template-columns: repeat(5, 1fr);
    }

    .feature-card {
        padding: 2rem;
    }
}

/* Small Mobile */
@media (max-width: 375px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        gap: 1.5rem;
    }

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

    .btn-large {
        padding: 14px 24px;
        font-size: 1rem;
    }
}