* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #0052CC;
    --primary-yellow: #FFD700;
    --primary-orange: #FF9500;
    --text-dark: #1A1A1A;
    --text-light: #666666;
    --bg-light: #F5F5F5;
    --bg-dark: #2D2D2D;
    --white: #FFFFFF;
    --border-color: #E0E0E0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background-color: var(--white);
    padding: 20px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 20px;
    font-weight: bold;
    color: var(--text-dark);
}

.logo-icon {
    font-size: 24px;
}

.logo-creative {
    color: var(--primary-blue);
}

.nav {
    flex: 1;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.dropdown {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
}

.dropdown-icon {
    font-size: 10px;
    color: var(--text-light);
}

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

.hamburger-line {
    width: 24px;
    height: 3px;
    background-color: var(--text-dark);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    border: none;
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background-color: #0041a3;
}

.btn-secondary {
    background-color: var(--white);
    color: var(--text-dark);
    border: 2px solid var(--border-color);
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* Hero Section */
.hero {
    padding: 80px 0;
    background: linear-gradient(135deg, rgba(245, 245, 245, 0.5) 0%, rgba(255, 255, 255, 0.5) 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
    position: relative;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.hero-title .highlight {
    font-weight: 700;
    color: var(--text-dark);
}

.hero-subtitle {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 40px;
    font-weight: 500;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-decoration {
    flex: 1;
    position: relative;
    height: 400px;
}

.decoration-shape {
    position: absolute;
    top: -50px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-yellow) 50%, var(--primary-orange) 100%);
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(50px);
}

/* Services Section */
.services {
    padding: 80px 0;
    background-color: var(--white);
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-dark);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.15);
}

.service-image {
    height: 200px;
    display: flex;
}

.service-image img {
    display: block;
    max-width: 100%;
    border-radius: 10px;
    object-fit: fill;
}

.service-title {
    margin-top: 5%;
    text-align: center;
}

.service-image h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    text-align: center;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.service-divider {
    height: 2px;
    background: linear-gradient(90deg, rgba(0, 82, 204, 0.2) 0%, rgba(255, 215, 0, 0.2) 100%);
}

.service-content {
    padding: 25px;
    flex: 1;
}

.service-content p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    text-align: justify;
}

.card-decoration {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100px;
    height: 100px;
    border-radius: 8px 0 8px 0;
    opacity: 0.3;
    display: none;
}

/* Success Cases Section */
.success-cases {
    padding: 80px 0;
    background-color: var(--bg-dark);
}

.section-title-light {
    color: var(--white);
}

.case-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    background-color: var(--bg-dark);
}

.case-image {
    position: relative;
    height: 300px;
    background: linear-gradient(135deg, #8B6914 0%, #D4A574 100%);
    border-radius: 8px;
    overflow: hidden;
}

.case-overlay {
    position: absolute;
    inset: 0;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><rect fill="%23ffffff" opacity="0.1" width="100" height="100"/></svg>');
}

.case-content {
    color: var(--white);
}

.case-content h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

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

.case-stat {
    font-size: 18px;
    margin-bottom: 20px;
    font-weight: 500;
}

.stat-value {
    color: var(--primary-yellow);
    font-weight: 700;
    font-size: 24px;
}

.case-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    line-height: 1.8;
}

/* Footer */
.footer {
    background-color: #F9F9F9;
    padding: 60px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.footer-contact {
    font-size: 14px;
}

.footer-contact p {
    margin-bottom: 8px;
    color: var(--text-dark);
}

.footer-links {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 13px;
    color: var(--text-dark);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-social {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
}

.social-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

.social-icon:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    font-size: 12px;
    color: var(--text-light);
}

/* Responsive Design */

/* Tablet/Medium Devices (769px - 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        max-width: 960px;
        padding: 0 16px;
    }

    .header-content {
        gap: 30px;
    }

    .nav-list {
        gap: 20px;
        font-size: 13px;
    }

    .hero .container {
        gap: 40px;
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .hero-decoration {
        height: 350px;
    }

    .decoration-shape {
        width: 350px;
        height: 350px;
        right: -50px;
        top: -30px;
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 25px;
    }

    .service-card {
        padding: 35px;
    }

    .section-title {
        font-size: 32px;
        margin-bottom: 50px;
    }

    .case-card {
        grid-template-columns: 1fr 1fr;
        gap: 35px;
    }

    .case-image {
        height: 280px;
    }

    .case-content h3 {
        font-size: 28px;
    }

    .hero-buttons {
        gap: 15px;
    }

    .btn-primary,
    .btn-secondary {
        padding: 10px 20px;
        font-size: 13px;
    }

    .footer-top {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .footer-contact {
        grid-column: 1 / -1;
    }
}

/* Mobile Devices - Large (577px - 768px) */
@media (min-width: 577px) and (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 16px;
    }

    .header {
        padding: 16px 0;
    }

    .header-content {
        gap: 16px;
        flex-wrap: wrap;
    }

    .logo {
        gap: 6px;
        font-size: 18px;
        flex: 1;
        min-width: 150px;
    }

    .logo-icon {
        font-size: 20px;
    }

    .nav {
        flex: 1;
        min-width: 100%;
        order: 3;
    }

    .nav-list {
        gap: 12px;
        font-size: 12px;
        flex-wrap: wrap;
    }

    .nav-list a {
        font-size: 12px;
    }

    .btn-primary {
        padding: 9px 18px;
        font-size: 12px;
        white-space: nowrap;
    }

    .hero {
        padding: 60px 0;
    }

    .hero .container {
        flex-direction: column;
        gap: 35px;
    }

    .hero-title {
        font-size: 32px;
        margin-bottom: 16px;
    }

    .hero-subtitle {
        font-size: 14px;
        margin-bottom: 30px;
    }

    .hero-buttons {
        flex-direction: row;
        gap: 12px;
        flex-wrap: wrap;
    }

    .btn-primary,
    .btn-secondary {
        padding: 9px 16px;
        font-size: 12px;
        flex: 1;
        min-width: 140px;
    }

    .hero-decoration {
        height: 250px;
    }

    .decoration-shape {
        width: 250px;
        height: 250px;
        right: -50px;
        top: -25px;
    }

    .services {
        padding: 60px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .service-card {
        overflow: hidden;
    }

    .service-image {
        height: 160px;
    }

    .service-image h3 {
        font-size: 16px;
    }

    .service-content {
        padding: 20px;
    }

    .service-content p {
        font-size: 13px;
    }

    .section-title {
        font-size: 28px;
        margin-bottom: 40px;
    }

    .success-cases {
        padding: 60px 0;
    }

    .case-card {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .case-image {
        height: 250px;
    }

    .case-content h3 {
        font-size: 24px;
    }

    .case-stat {
        font-size: 16px;
    }

    .case-description {
        font-size: 13px;
    }

    .footer {
        padding: 40px 0 15px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 25px;
        margin-bottom: 25px;
    }

    .footer-links {
        flex-direction: column;
        gap: 10px;
    }

    .footer-contact,
    .footer-social {
        text-align: center;
    }

    .footer-social {
        justify-content: center;
    }

    /* Hamburger Menu */
    .hamburger {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-top: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav.active {
        max-height: 500px;
    }

    .nav-list {
        flex-direction: column;
        padding: 16px;
        gap: 0;
    }

    .nav-list li {
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
    }

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

    .header-content {
        position: relative;
    }
}

/* Mobile Devices - Small (481px - 576px) */
@media (min-width: 481px) and (max-width: 576px) {
    .container {
        max-width: 100%;
        padding: 0 14px;
    }

    .header {
        padding: 14px 0;
    }

    .header-content {
        gap: 12px;
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .logo {
        gap: 5px;
        font-size: 16px;
        min-width: 130px;
    }

    .logo-icon {
        font-size: 18px;
    }

    .nav {
        flex: 0 1 100%;
        order: 3;
        margin-top: 10px;
    }

    .nav-list {
        gap: 10px;
        font-size: 11px;
        flex-wrap: wrap;
    }

    .nav-list a {
        font-size: 11px;
    }

    .dropdown {
        gap: 4px;
    }

    .dropdown-icon {
        font-size: 8px;
    }

    .btn-primary {
        padding: 8px 14px;
        font-size: 11px;
    }

    /* Hamburger Menu */
    .hamburger {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-top: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .nav.active {
        max-height: 500px;
    }

    .nav-list {
        flex-direction: column;
        padding: 16px;
        gap: 0;
    }

    .nav-list li {
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
    }

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

    .header-content {
        position: relative;
    }

    .hero {
        padding: 50px 0;
    }

    .hero .container {
        flex-direction: column;
        gap: 30px;
    }

    .hero-title {
        font-size: 26px;
        line-height: 1.1;
        margin-bottom: 12px;
    }

    .hero-subtitle {
        font-size: 13px;
        margin-bottom: 24px;
    }

    .hero-buttons {
        flex-direction: row;
        gap: 10px;
        flex-wrap: wrap;
    }

    .btn-primary,
    .btn-secondary {
        padding: 8px 12px;
        font-size: 11px;
    }

    .hero-decoration {
        display: none;
    }

    .services {
        padding: 50px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .service-card {
        overflow: hidden;
    }

    .service-image {
        height: 150px;
    }

    .service-image h3 {
        font-size: 15px;
    }

    .service-content {
        padding: 18px;
    }

    .service-content p {
        font-size: 12px;
    }

    .section-title {
        font-size: 24px;
        margin-bottom: 35px;
    }

    .success-cases {
        padding: 50px 0;
    }

    .case-card {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .case-image {
        height: 200px;
    }

    .case-content h3 {
        font-size: 20px;
        margin-bottom: 12px;
    }

    .case-stat {
        font-size: 14px;
        margin-bottom: 12px;
    }

    .stat-value {
        font-size: 20px;
    }

    .case-description {
        font-size: 12px;
        line-height: 1.6;
    }

    .footer {
        padding: 35px 0 12px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-bottom: 20px;
        padding-bottom: 20px;
    }

    .footer-links {
        flex-direction: column;
        gap: 8px;
        font-size: 12px;
    }

    .footer-contact {
        text-align: center;
        font-size: 13px;
    }

    .footer-contact p {
        margin-bottom: 6px;
    }

    .footer-social {
        gap: 12px;
        justify-content: center;
    }

    .social-icon {
        width: 28px;
        height: 28px;
        font-size: 13px;
    }

    .footer-bottom {
        font-size: 11px;
    }
}

/* Mobile Devices - Extra Small (320px - 480px) */
@media (max-width: 480px) {
    .container {
        max-width: 100%;
        padding: 0 12px;
    }

    .header {
        padding: 12px 0;
    }

    .header-content {
        gap: 10px;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: stretch;
    }

    .logo {
        gap: 4px;
        font-size: 14px;
        display: flex;
        align-items: center;
    }

    .logo-text {
        font-size: 14px;
    }

    .logo-icon {
        font-size: 16px;
    }

    .logo-creative {
        display: block;
    }

    /* Hamburger Menu */
    .hamburger {
        display: flex;
        order: 2;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-top: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
        z-index: 999;
    }

    .nav.active {
        max-height: 500px;
    }

    .nav-list {
        flex-direction: column;
        padding: 16px;
        gap: 0;
        flex-wrap: nowrap;
    }

    .nav-list li {
        padding: 12px 0;
        border-bottom: 1px solid var(--border-color);
    }

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

    .header-content {
        position: relative;
    }

    .nav-list {
        gap: 8px;
        font-size: 10px;
        flex-wrap: wrap;
    }

    .nav-list a {
        font-size: 10px;
        padding: 4px 6px;
    }

    .dropdown {
        gap: 3px;
    }

    .dropdown-icon {
        font-size: 7px;
    }

    .btn-primary,
    .btn-secondary {
        padding: 7px 12px;
        font-size: 10px;
        flex: 0 1 auto;
        white-space: nowrap;
    }

    .btn-primary {
        flex: 0 1 auto;
        min-width: auto;
    }

    .btn-secondary {
        min-width: auto;
    }

    .hero {
        padding: 40px 0;
    }

    .hero .container {
        flex-direction: column;
        gap: 25px;
        position: relative;
    }

    .hero-title {
        font-size: 22px;
        line-height: 1.1;
        margin-bottom: 10px;
    }

    .hero-subtitle {
        font-size: 12px;
        margin-bottom: 20px;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .hero-buttons .btn-primary,
    .hero-buttons .btn-secondary {
        width: 100%;
        flex: 0 1 auto;
    }

    .hero-decoration {
        display: none;
    }

    .services {
        padding: 40px 0;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .service-card {
        overflow: hidden;
    }

    .service-image {
        height: 140px;
    }

    .service-image h3 {
        font-size: 14px;
        padding: 16px;
    }

    .service-content {
        padding: 16px;
    }

    .service-content p {
        font-size: 11px;
        line-height: 1.5;
    }

    .section-title {
        font-size: 21px;
        margin-bottom: 30px;
    }

    .success-cases {
        padding: 40px 0;
    }

    .case-card {
        grid-template-columns: 1fr;
        gap: 18px;
    }

    .case-image {
        height: 180px;
        border-radius: 6px;
    }

    .case-content {
        padding: 0;
    }

    .case-content h3 {
        font-size: 18px;
        margin-bottom: 10px;
        line-height: 1.1;
    }

    .case-stat {
        font-size: 13px;
        margin-bottom: 10px;
    }

    .stat-value {
        font-size: 18px;
    }

    .case-description {
        font-size: 11px;
        line-height: 1.5;
    }

    .footer {
        padding: 30px 0 10px;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-bottom: 15px;
        padding-bottom: 15px;
    }

    .footer-contact {
        text-align: center;
        font-size: 12px;
    }

    .footer-contact p {
        margin-bottom: 4px;
    }

    .footer-links {
        flex-direction: column;
        gap: 6px;
        justify-content: center;
        font-size: 11px;
    }

    .footer-links a {
        font-size: 11px;
    }

    .footer-social {
        gap: 10px;
        justify-content: center;
    }

    .social-icon {
        width: 26px;
        height: 26px;
        font-size: 12px;
    }

    .footer-bottom {
        text-align: center;
        font-size: 10px;
        padding-top: 10px;
    }
}