/* CSS Variables / Design Tokens */
:root {
    /* Colors */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-yellow: #fedc00;
    --color-gray: #666666;
    --color-gray-light: rgba(0, 0, 0, 0.6);
    --color-overlay: rgba(0, 0, 0, 0.65);
    --color-required: #cc0000;

    /* Typography */
    --font-primary: 'Lato', sans-serif;
    --font-headings: 'Oswald', sans-serif;

    /* Font Sizes */
    --text-small: 14px;
    --text-regular: 16px;
    --text-medium: 18px;
    --text-large: 20px;
    --heading-1: 56px;
    --heading-2: 48px;
    --heading-3: 40px;
    --heading-4: 32px;
    --heading-6: 20px;

    /* Spacing */
    --padding-global: 108px;
    --padding-section-large: 112px;
    --padding-section-medium: 80px;

    /* Container */
    --container-max-width: 1280px;
}

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-regular);
    line-height: 1.5;
    color: var(--color-black);
    background: var(--color-white);
    overflow-x: hidden;
}

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

ul {
    list-style-position: inside;
}

/* Typography */
h1 {
    font-family: var(--font-headings);
    font-size: var(--heading-1);
    font-weight: 700;
    line-height: 1.2;
}

h2 {
    font-family: var(--font-headings);
    font-size: var(--heading-2);
    font-weight: 700;
    line-height: 1.2;
}

h3 {
    font-family: var(--font-headings);
    font-size: var(--heading-6);
    font-weight: 700;
    line-height: 1.4;
}

.text-medium {
    font-size: var(--text-medium);
}

/* Container */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--padding-global);
}

/* Buttons */
.btn {
    font-family: var(--font-primary);
    font-size: var(--text-regular);
    font-weight: 400;
    padding: 8px 20px;
    border: 1px solid var(--color-black);
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-decoration: none;
    display: inline-block;
}

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

.btn-primary:hover {
    background: var(--color-black);
    color: var(--color-yellow);
}

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

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-black);
}

.btn-primary-large {
    background: var(--color-yellow);
    color: var(--color-black);
    border-color: var(--color-yellow);
    padding: 12px 24px;
    font-size: var(--text-regular);
}

.btn-primary-large:hover {
    background: var(--color-black);
    color: var(--color-yellow);
    border-color: var(--color-yellow);
}

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

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

.btn-submit {
    background: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
    padding: 12px 24px;
    width: auto;
}

.btn-submit:hover {
    background: var(--color-yellow);
    color: var(--color-black);
}

/* Navbar */
.navbar {
    background: var(--color-black);
    padding: 24px var(--padding-global);
}

.navbar-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo img {
    height: 110px;
    width: auto;
}

.navbar-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}

/* Hero Section */
.hero {
    position: relative;
    height: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('assets/images/header-bg.png');
    background-size: cover;
    background-position: center;
    padding: 0 var(--padding-global);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: var(--color-overlay);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max-width);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 32px;
    align-items: center;
}

.hero h1 {
    color: var(--color-white);
    margin: 0;
}

/* Quality Section */
.quality-section {
    background: var(--color-black);
    padding: var(--padding-section-large) var(--padding-global);
}

.quality-grid {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

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

.quality-content .text-medium {
    color: var(--color-white);
}

.quality-list ul {
    list-style: disc;
    padding-left: 30px;
    color: var(--color-white);
    font-size: var(--text-large);
    column-count: 2;
    column-gap: 40px;
}

.quality-list ul li {
    margin-left: 0;
    margin-bottom: 16px;
}

/* Why Choose Section */
.why-choose-section {
    background: var(--color-white);
}

.why-choose-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 720px;
}

.why-choose-image {
    position: relative;
    overflow: hidden;
}

.why-choose-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.why-choose-content {
    padding: var(--padding-section-large) var(--padding-global) var(--padding-section-large) 80px;
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 560px;
}

.why-choose-content h2 {
    color: var(--color-black);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    padding: 8px 0;
}

.feature {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature h3 {
    color: var(--color-black);
}

.feature p {
    color: var(--color-black);
    font-size: var(--text-regular);
}

/* Who We Serve Section */
.who-we-serve-section {
    background: var(--color-white);
}

.who-we-serve-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 720px;
}

.who-we-serve-content {
    padding: var(--padding-section-large) 80px var(--padding-section-large) var(--padding-global);
    display: flex;
    flex-direction: column;
    gap: 32px;
    max-width: 560px;
    margin-left: auto;
}

.who-we-serve-content h2 {
    color: var(--color-black);
}

.who-we-serve-content .text-medium {
    color: var(--color-black);
}

.who-we-serve-content ul {
    list-style: disc;
    padding-left: 24px;
    color: var(--color-black);
    font-size: var(--text-regular);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.who-we-serve-content .closing {
    margin-top: 0;
}

.who-we-serve-image {
    position: relative;
    overflow: hidden;
}

.who-we-serve-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Services Section */
.services-section {
    background: var(--color-black);
    padding: var(--padding-section-large) var(--padding-global);
}

.services-title {
    color: var(--color-yellow);
    text-align: center;
    margin-bottom: 32px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 48px;
    margin-bottom: 32px;
}

.service-card {
    background: var(--color-white);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.service-card h3 {
    color: var(--color-black);
    font-size: var(--heading-4);
    line-height: 1.3;
    font-family: var(--font-headings);
    font-weight: 700;
}

.service-content {
    color: var(--color-black);
}

.service-content p {
    margin-bottom: 16px;
}

.service-content ul {
    list-style: disc;
    padding-left: 24px;
    margin-bottom: 16px;
}

.service-content ul li {
    margin-bottom: 0;
}

.service-content p:last-child {
    margin-bottom: 0;
}

.services-cta {
    display: flex;
    justify-content: center;
    margin-top: 32px;
}

/* Contact Section */
.contact-section {
    background: var(--color-white);
    padding: var(--padding-section-large) var(--padding-global);
}

.contact-header {
    max-width: 768px;
    margin: 0 auto 48px;
    text-align: center;
}

.contact-header h2 {
    color: var(--color-black);
    margin-bottom: 24px;
}

.contact-header .text-medium {
    color: var(--color-black);
    margin-bottom: 8px;
}

.required-note {
    font-size: var(--text-small);
    color: var(--color-black);
}

.required {
    color: var(--color-required);
}

.contact-form {
    max-width: 768px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: var(--text-regular);
    color: var(--color-black);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
    padding: 12px;
    border: 1px solid var(--color-black);
    font-family: var(--font-primary);
    font-size: var(--text-regular);
    width: 100%;
}

.form-group textarea {
    resize: vertical;
    min-height: 180px;
}

.form-group textarea::placeholder {
    color: var(--color-gray-light);
}

/* Radio Buttons */
.radio-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding: 16px 0;
}

.radio-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 12px;
}

.radio-option input[type="radio"] {
    width: 18px;
    height: 18px;
    border: 1px solid var(--color-black);
    border-radius: 50%;
    appearance: none;
    cursor: pointer;
    background: var(--color-white);
}

.radio-option input[type="radio"]:checked {
    background: var(--color-black);
    border: 4px solid var(--color-white);
    box-shadow: 0 0 0 1px var(--color-black);
}

.radio-option label {
    cursor: pointer;
    font-size: var(--text-regular);
    color: var(--color-black);
}

/* File Upload */
.file-upload {
    border: 1px dashed var(--color-black);
    padding: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.upload-icon {
    width: 24px;
    height: 24px;
    color: var(--color-black);
}

.upload-text {
    font-size: var(--text-regular);
    color: var(--color-black);
}

.upload-formats {
    font-size: var(--text-regular);
    color: var(--color-gray);
}

/* Checkbox */
.checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 8px;
    padding-bottom: 16px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border: 1px solid var(--color-black);
    appearance: none;
    cursor: pointer;
    background: var(--color-white);
    flex-shrink: 0;
}

.checkbox-group input[type="checkbox"]:checked {
    background: var(--color-black);
    position: relative;
}

.checkbox-group input[type="checkbox"]:checked::after {
    content: '✓';
    color: var(--color-white);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 12px;
}

.checkbox-group label {
    cursor: pointer;
    font-size: var(--text-small);
    color: var(--color-black);
    margin: 0;
}

.terms-link {
    color: var(--color-black);
    text-decoration: underline;
}

/* Footer */
.footer {
    background: var(--color-black);
    padding: var(--padding-section-medium) var(--padding-global);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    gap: 64px;
    margin-bottom: 80px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.footer-logo {
    width: 188px;
    height: auto;
}

.footer-address {
    color: var(--color-white);
    font-size: var(--text-small);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--color-white);
    font-size: var(--text-small);
    font-weight: 600;
    text-decoration: none;
    padding: 8px 0;
}

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

.footer-divider {
    height: 1px;
    background: var(--color-white);
    margin-bottom: 32px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info {
    display: flex;
    gap: 36px;
    color: var(--color-white);
    font-size: var(--text-small);
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    color: var(--color-white);
    font-size: var(--text-small);
    text-decoration: underline;
}

.footer-legal a:hover {
    color: var(--color-yellow);
}

/* Responsive Design - Tablet */
@media (max-width: 1024px) {
    :root {
        --padding-global: 60px;
        --padding-section-large: 80px;
        --heading-1: 48px;
        --heading-2: 40px;
        --heading-3: 32px;
        --heading-4: 28px;
    }

    .navbar-logo img {
        height: 80px;
    }

    .hero {
        height: 600px;
    }

    .quality-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .why-choose-container,
    .who-we-serve-container {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .why-choose-content,
    .who-we-serve-content {
        padding: 60px;
        max-width: 100%;
        margin: 0 auto;
    }

    .why-choose-image,
    .who-we-serve-image {
        min-height: 400px;
    }

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

    .services-title {
        height: auto;
    }
}

/* Responsive Design - Mobile */
@media (max-width: 768px) {
    :root {
        --padding-global: 24px;
        --padding-section-large: 60px;
        --padding-section-medium: 40px;
        --heading-1: 32px;
        --heading-2: 32px;
        --heading-3: 24px;
        --heading-4: 24px;
    }

    .navbar {
        padding: 16px 24px;
    }

    .navbar-container {
        flex-direction: column;
        gap: 16px;
    }

    .navbar-logo img {
        height: 60px;
    }

    .navbar-actions {
        width: 100%;
        flex-direction: column;
    }

    .navbar-actions .btn {
        width: 100%;
        text-align: center;
    }

    .hero {
        height: auto;
        min-height: 500px;
        padding: 60px 24px;
    }

    .hero h1 {
        font-size: var(--heading-1);
    }

    .quality-grid {
        gap: 32px;
    }

    .quality-list ul {
        font-size: var(--text-regular);
        column-count: 1;
    }

    .why-choose-content,
    .who-we-serve-content {
        padding: 40px 24px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .why-choose-image,
    .who-we-serve-image {
        min-height: 300px;
    }

    .form-row,
    .radio-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .footer-content {
        flex-direction: column;
        gap: 32px;
        margin-bottom: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 24px;
        align-items: flex-start;
    }

    .footer-info {
        flex-direction: column;
        gap: 8px;
    }

    .footer-legal {
        flex-direction: column;
        gap: 8px;
    }
}

/* Form Messages */
.form-message {
    padding: 16px 24px;
    margin-bottom: 24px;
    border-radius: 4px;
    font-size: var(--text-regular);
    transition: opacity 0.3s ease;
}

.form-message-error {
    background: #ffe6e6;
    border: 1px solid #c00;
    color: #c00;
}

.form-message-success {
    background: #e6ffe6;
    border: 1px solid #0c0;
    color: #060;
}

.form-message-info {
    background: #e6f3ff;
    border: 1px solid #06c;
    color: #06c;
}

/* Thank You Message */
.thank-you-message {
    background: #f9f9f9;
    border: 2px solid var(--color-yellow);
    border-radius: 8px;
    padding: 48px;
    text-align: center;
    animation: slideIn 0.5s ease;
    transition: opacity 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.thank-you-content {
    max-width: 600px;
    margin: 0 auto;
}

.thank-you-icon {
    margin: 0 auto 24px;
    width: 64px;
    height: 64px;
    animation: checkmarkPop 0.6s ease;
}

@keyframes checkmarkPop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

.thank-you-message h2 {
    color: var(--color-black);
    margin-bottom: 16px;
    font-size: var(--heading-2);
}

.thank-you-message p {
    color: var(--color-black);
    font-size: var(--text-medium);
    margin-bottom: 16px;
}

.thank-you-info {
    background: var(--color-white);
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 24px;
    margin: 24px 0;
    text-align: left;
}

.thank-you-info p {
    margin-bottom: 12px;
}

.thank-you-info strong {
    font-weight: 600;
    color: var(--color-black);
}

.thank-you-info ul {
    list-style: disc;
    padding-left: 24px;
    margin-top: 12px;
}

.thank-you-info li {
    margin-bottom: 8px;
    color: var(--color-black);
}

.thank-you-info a {
    color: var(--color-black);
    font-weight: 600;
    text-decoration: underline;
}

.thank-you-info a:hover {
    color: var(--color-yellow);
}

.thank-you-message .btn {
    margin-top: 24px;
}

/* Loading state for button */
button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --heading-1: 28px;
        --heading-2: 28px;
        --heading-3: 20px;
        --heading-4: 20px;
    }

    .btn {
        padding: 10px 16px;
        font-size: 14px;
    }

    .hero {
        min-height: 400px;
    }

    .thank-you-message {
        padding: 24px;
    }

    .thank-you-info {
        padding: 16px;
    }
}