/* ===================================
   MOBILE-FIRST CSS DESIGN
   Xưởng Nội Thất MDF Website
   =================================== */

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

:root {
    --primary-color: #8B4513;
    --secondary-color: #D2691E;
    --accent-color: #CD853F;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #F5F5F5;
    --white: #FFFFFF;
    --shadow: rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Be Vietnam Pro', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

/* Typography - Playfair Display cho tiêu đề */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    letter-spacing: 0.5px;
}

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

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

ul {
    list-style: none;
}

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

/* ===================================
   HEADER & NAVIGATION - MOBILE FIRST
   =================================== */
.header {
    background-color: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo img {
    width: 120px;
    height: auto;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Navigation Menu */
.nav-menu {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 70%;
    max-width: 300px;
    height: calc(100vh - 70px);
    background-color: var(--white);
    box-shadow: -2px 0 10px var(--shadow);
    padding: 30px 20px;
    transition: right 0.3s ease;
    overflow-y: auto;
}

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

.nav-menu li {
    margin-bottom: 20px;
}

.nav-menu a {
    display: block;
    padding: 12px 15px;
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 500;
    border-radius: 5px;
    transition: var(--transition);
}

.nav-menu a:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* ===================================
   HERO SECTION - MOBILE FIRST
   =================================== */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 60px 20px;
    text-align: center;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content h1 {
    font-size: 28px;
    margin-bottom: 15px;
    line-height: 1.3;
}

.hero-subtitle {
    font-size: 16px;
    margin-bottom: 25px;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    background-color: var(--white);
    color: var(--primary-color);
    padding: 14px 30px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* ===================================
   PRODUCTS SECTION - MOBILE FIRST
   =================================== */
.products {
    padding: 50px 20px;
    background-color: var(--bg-light);
}

.products h2 {
    text-align: center;
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-intro {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 40px;
    font-size: 16px;
}

.product-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 25px;
}

.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 220px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.05);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.product-info p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 15px;
    line-height: 1.6;
}

.product-link {
    display: inline-block;
    color: var(--secondary-color);
    font-weight: 600;
    padding: 8px 20px;
    border: 2px solid var(--secondary-color);
    border-radius: 5px;
    transition: var(--transition);
}

.product-link:hover {
    background-color: var(--secondary-color);
    color: var(--white);
}

/* ===================================
   ABOUT SECTION - MOBILE FIRST
   =================================== */
.about {
    padding: 50px 20px;
    background-color: var(--white);
}

.about h2 {
    text-align: center;
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.about-text h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.features-list {
    list-style: none;
}

.features-list li {
    padding: 12px 0;
    color: var(--text-dark);
    font-size: 16px;
    line-height: 1.6;
    border-bottom: 1px solid #eeeeee;
}

.features-list li:last-child {
    border-bottom: none;
}

.about-image {
    width: 100%;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 20px var(--shadow);
}

/* ===================================
   CONTACT SECTION - MOBILE FIRST
   =================================== */
.contact {
    padding: 50px 20px;
    background-color: var(--bg-light);
}

.contact h2 {
    text-align: center;
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-info h3,
.contact-form h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.contact-info p {
    margin-bottom: 15px;
    font-size: 16px;
    line-height: 1.8;
}

.contact-info a {
    color: var(--secondary-color);
    font-weight: 600;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Contact Form - Mobile First */
.contact-form {
    background-color: var(--white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 3px 15px var(--shadow);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 15px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #dddddd;
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-button {
    width: 100%;
    padding: 14px 30px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.submit-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ===================================
   FOOTER - MOBILE FIRST WITH BACKGROUND IMAGE
   =================================== */
.footer {
    position: relative !important;
    color: var(--white) !important;
    padding: 60px 20px 30px !important;
    overflow: hidden !important;
    background: none !important;
}

/* Background Image Layer */
.footer::before {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background-image: url('../public/Luxury_hotel-style_bedroom_furniture_photography,_202605081250.jpeg') !important;
    background-size: cover !important;
    background-position: center !important;
    background-repeat: no-repeat !important;
    filter: blur(4px) !important;
    z-index: 0 !important;
}

/* Dark Overlay for Better Text Readability */
.footer::after {
    content: '' !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.85) 0%, rgba(20, 20, 20, 0.75) 100%) !important;
    backdrop-filter: blur(5px) !important;
    -webkit-backdrop-filter: blur(5px) !important;
    z-index: 1 !important;
}

/* Ensure content is above overlay */
.footer > * {
    position: relative !important;
    z-index: 2 !important;
}

.footer .container {
    position: relative !important;
    z-index: 2 !important;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.footer-section p {
    font-size: 14px;
    line-height: 1.6;
    opacity: 0.9;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section a {
    color: var(--white);
    opacity: 0.8;
    font-size: 14px;
    transition: var(--transition);
}

.footer-section a:hover {
    opacity: 1;
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    opacity: 0.8;
}

/* ===================================
   TABLET RESPONSIVE (min-width: 768px)
   =================================== */
@media (min-width: 768px) {
    .container {
        max-width: 720px;
        padding: 0 30px;
    }

    /* Navigation for Tablet */
    .mobile-menu-toggle {
        display: none;
    }

    .nav-menu {
        position: static;
        display: flex;
        flex-direction: row;
        width: auto;
        height: auto;
        background: none;
        box-shadow: none;
        padding: 0;
        gap: 5px;
    }

    .nav-menu li {
        margin-bottom: 0;
    }

    .nav-menu a {
        padding: 8px 15px;
        font-size: 16px;
    }

    /* Hero Section */
    .hero {
        padding: 80px 30px;
        min-height: 450px;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    /* Products Grid */
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .product-image {
        height: 250px;
    }

    /* About Section */
    .about-content {
        flex-direction: row;
        align-items: center;
    }

    .about-text,
    .about-image {
        flex: 1;
    }

    /* Contact Section */
    .contact-content {
        flex-direction: row;
        gap: 40px;
    }

    .contact-info,
    .contact-form {
        flex: 1;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ===================================
   DESKTOP RESPONSIVE (min-width: 1024px)
   =================================== */
@media (min-width: 1024px) {
    .container {
        max-width: 960px;
    }

    /* Hero Section */
    .hero {
        padding: 100px 30px;
        min-height: 500px;
    }

    .hero-content h1 {
        font-size: 42px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

    /* Products Grid */
    .product-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .products h2,
    .about h2,
    .contact h2 {
        font-size: 32px;
    }
}

/* ===================================
   LARGE DESKTOP (min-width: 1200px)
   =================================== */
@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }

    .hero-content h1 {
        font-size: 48px;
    }

    .product-image {
        height: 280px;
    }
}

/* ===================================
   ACCESSIBILITY & PERFORMANCE
   =================================== */

/* Focus Styles for Keyboard Navigation */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Reduced Motion for Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .cta-button,
    .mobile-menu-toggle {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
    }

    a {
        text-decoration: underline;
    }
}

/* ===================================
   PHONG THỦY SECTION STYLES
   =================================== */

.pt-section {
    padding: 4rem 1rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.pt-container {
    max-width: 800px;
    margin: 0 auto;
}

.pt-header {
    text-align: center;
    margin-bottom: 3rem;
}

.pt-title {
    font-size: 2rem;
    color: #2c5f2d;
    margin-bottom: 1rem;
}

.pt-subtitle {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.6;
}

/* Form Styles */
.pt-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.pt-form-group {
    margin-bottom: 1.5rem;
}

.pt-label {
    display: block;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.pt-required {
    color: #e74c3c;
}

.pt-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.pt-input:focus {
    outline: none;
    border-color: #2c5f2d;
}

.pt-hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #777;
}

/* Radio Group */
.pt-radio-group {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.pt-radio {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 0.75rem 1.5rem;
    border: 2px solid #ddd;
    border-radius: 8px;
    transition: all 0.3s;
}

.pt-radio:hover {
    border-color: #2c5f2d;
    background: #f0f8f0;
}

.pt-radio input[type="radio"] {
    display: none;
}

.pt-radio input[type="radio"]:checked + .pt-radio-mark {
    background: #2c5f2d;
    border-color: #2c5f2d;
}

.pt-radio input[type="radio"]:checked + .pt-radio-mark::after {
    opacity: 1;
}

.pt-radio-mark {
    width: 20px;
    height: 20px;
    border: 2px solid #ddd;
    border-radius: 50%;
    margin-right: 0.5rem;
    position: relative;
    transition: all 0.3s;
}

.pt-radio-mark::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: white;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.3s;
}

.pt-radio-text {
    font-size: 1rem;
    color: #333;
}

/* Error Message */
.pt-error {
    color: #e74c3c;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: #fee;
    border-radius: 6px;
    display: none;
}

.pt-error:not(:empty) {
    display: block;
}

/* Submit Button */
.pt-submit-btn {
    width: 100%;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #2c5f2d 0%, #1a3a1b 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
    margin-top: 2rem;
}

.pt-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(44, 95, 45, 0.3);
}

.pt-submit-btn:active {
    transform: translateY(0);
}

.pt-btn-icon {
    font-size: 1.5rem;
}

/* Result Section */
.pt-result {
    margin-top: 3rem;
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.pt-result-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid #f0f0f0;
}

.pt-result-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.pt-result-title {
    font-size: 1.75rem;
    color: #2c5f2d;
    margin-bottom: 0.5rem;
}

.pt-result-subtitle {
    color: #777;
    font-size: 1rem;
}

/* Cards */
.pt-card {
    background: #f9f9f9;
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid #2c5f2d;
}

.pt-card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.pt-card-icon {
    font-size: 1.5rem;
}

.pt-card-header h4 {
    font-size: 1.25rem;
    color: #333;
    margin: 0;
}

.pt-card-body {
    color: #555;
    line-height: 1.6;
}

.pt-menh-info {
    background: white;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.pt-menh-row {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.pt-menh-row:last-child {
    border-bottom: none;
}

.pt-menh-label {
    font-weight: 600;
    color: #666;
}

.pt-menh-value {
    color: #333;
    font-weight: 500;
}

.pt-highlight {
    color: #d4af37;
    font-size: 1.3em;
    font-weight: bold;
}

.pt-menh-main {
    color: #2c5f2d;
    font-size: 1.2em;
}

.pt-ngu-hanh {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.9em;
}

.pt-ngu-hanh-kim { background: #f5f5dc; color: #8b7355; }
.pt-ngu-hanh-mộc { background: #e8f5e9; color: #2e7d32; }
.pt-ngu-hanh-thủy { background: #e3f2fd; color: #1565c0; }
.pt-ngu-hanh-hỏa { background: #ffebee; color: #c62828; }
.pt-ngu-hanh-thổ { background: #fff3e0; color: #e65100; }

.pt-menh-desc {
    margin-top: 1rem;
    padding: 1rem;
    background: #fffbf0;
    border-radius: 6px;
    font-style: italic;
    color: #666;
}

/* Màu MDF */
.pt-mau-section {
    margin-bottom: 2rem;
}

.pt-mau-section-title {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #f0f0f0;
}

.pt-mau-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.pt-mau-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: white;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

.pt-mau-preview {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    flex-shrink: 0;
}

.pt-mau-info {
    flex: 1;
}

.pt-mau-name {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.25rem;
}

.pt-mau-desc {
    font-size: 0.875rem;
    color: #777;
}

.pt-mau-note {
    margin-top: 1rem;
    padding: 1rem;
    background: #fff9e6;
    border-radius: 6px;
    font-size: 0.9rem;
    color: #666;
}

/* Hướng */
.pt-huong-intro {
    margin-bottom: 1.5rem;
    color: #555;
}

.pt-huong-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pt-huong-item {
    background: white;
    padding: 1.25rem;
    border-radius: 8px;
    border: 2px solid #e0e0e0;
}

.pt-huong-best {
    border-color: #ffd700;
    background: linear-gradient(135deg, #fffbf0 0%, #fff9e6 100%);
}

.pt-huong-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.pt-huong-badge {
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.pt-badge-sinh-khi { background: #ffd700; color: #8b6914; }
.pt-badge-thien-y { background: #90ee90; color: #2e7d32; }
.pt-badge-dien-nien { background: #ffb6c1; color: #c2185b; }
.pt-badge-phuc-vi { background: #add8e6; color: #1565c0; }

.pt-huong-direction {
    font-size: 1.1rem;
    font-weight: bold;
    color: #2c5f2d;
}

.pt-huong-desc {
    color: #555;
    margin-bottom: 0.5rem;
}

.pt-huong-tip {
    font-size: 0.9rem;
    color: #666;
    padding: 0.5rem;
    background: #f9f9f9;
    border-radius: 4px;
}

.pt-huong-note {
    margin-top: 1.5rem;
    padding: 1rem;
    background: #e3f2fd;
    border-radius: 6px;
    font-size: 0.9rem;
    color: #1565c0;
}

/* CTA Section */
.pt-cta-section {
    margin-top: 2rem;
    padding: 2rem;
    background: linear-gradient(135deg, #2c5f2d 0%, #1a3a1b 100%);
    border-radius: 12px;
    color: white;
    text-align: center;
}

.pt-cta-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.pt-cta-icon {
    font-size: 3rem;
}

.pt-cta-text h4 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.pt-cta-text p {
    color: #e0e0e0;
}

.pt-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: #0068ff;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pt-cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 104, 255, 0.4);
}

.pt-cta-note {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #d0d0d0;
}

/* Reset Button */
.pt-reset-btn {
    display: block;
    margin: 2rem auto 0;
    padding: 0.75rem 2rem;
    background: #f0f0f0;
    color: #333;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.3s;
}

.pt-reset-btn:hover {
    background: #e0e0e0;
}

/* Floating Contact Buttons */
.pt-floating-contact {
    position: fixed;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 1000;
}

.pt-float-btn {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
}

.pt-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.pt-float-zalo {
    background: #0068ff;
}

.pt-float-messenger {
    background: #0084ff;
}

.pt-float-call {
    background: #34c759;
}

.pt-float-label {
    position: absolute;
    right: 70px;
    background: rgba(0,0,0,0.8);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.pt-float-btn:hover .pt-float-label {
    opacity: 1;
}

/* Tablet & Desktop */
@media (min-width: 768px) {
    .pt-title {
        font-size: 2.5rem;
    }
    
    .pt-form {
        padding: 3rem;
    }
    
    .pt-mau-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pt-cta-content {
        flex-direction: row;
    }
}

@media (min-width: 1024px) {
    .pt-section {
        padding: 6rem 2rem;
    }
    
    .pt-mau-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}