/* CSS Variables */
:root {
    --color-primary: #2B5F83;
    --color-primary-dark: #1E4562;
    --color-primary-light: #3A7BA8;
    --color-secondary: #5BA4A4;
    --color-secondary-light: #7BBFBF;
    --color-accent: #E8B44D;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #888888;
    --color-background: #FFFFFF;
    --color-background-alt: #F5F7FA;
    --color-background-dark: #1E4562;
    --color-border: #E0E0E0;
    --color-white: #FFFFFF;
    --color-black: #000000;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    --border-radius-full: 50%;
    
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    --header-height: 120px;
    --container-max-width: 1200px;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-primary-light);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Section */
.section {
    padding: var(--spacing-4xl) 0;
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary-dark);
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    position: relative;
}

.section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--color-secondary);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--border-radius-full);
}

/* Button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.btn--primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    border: 2px solid var(--color-secondary);
}

.btn--primary:hover {
    background-color: var(--color-secondary-light);
    border-color: var(--color-secondary-light);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--color-secondary);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-normal);
    overflow: visible;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header__curve {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.header__curve-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.nav {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 100%;
    overflow: visible;
    position: relative;
    z-index: 1;
    padding-bottom: var(--spacing-md);
}

.nav__logo {
    display: flex;
    align-items: center;
    margin-left: var(--spacing-3xl);
}

.nav__logo-img {
    height: 70px;
    width: auto;
    max-width: 300px;
    object-fit: contain;
}

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

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xs);
}

.nav__link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-normal);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
    opacity: 1;
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

.nav__toggle,
.nav__close {
    display: none;
    font-size: var(--font-size-2xl);
    color: var(--color-text);
}

.nav__toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--color-text);
    margin: 5px 0;
    transition: all var(--transition-fast);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero__bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(30, 69, 98, 0.9) 0%, rgba(43, 95, 131, 0.8) 100%);
}

.hero__content {
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-xl);
    max-width: 800px;
    animation: fadeInUp 1s ease;
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
    line-height: 1.7;
}

/* About Section */
.about {
    background-color: var(--color-background);
}

.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about__image {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.about__img {
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
    cursor: pointer;
}

.about__img:hover {
    transform: scale(1.05);
}

.about__text {
    padding: var(--spacing-lg);
}

.about__heading {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-lg);
}

.about__description {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.about__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.about__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-weight: 500;
    color: var(--color-text);
}

.about__feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background-color: var(--color-secondary);
    color: var(--color-white);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-sm);
}

.about__team {
    margin-top: var(--spacing-4xl);
}

.about__team-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about__team-text {
    padding: var(--spacing-lg);
}

.about__team-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.about__team-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-slow);
    cursor: pointer;
}

.about__team-img:hover {
    transform: scale(1.05);
}

/* Services Section */
.services {
    background-color: var(--color-background-alt);
}

.services__intro {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
    align-items: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-xl);
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.services__intro-image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.services__intro-img {
    width: 100%;
    height: auto;
    transition: transform var(--transition-slow);
    cursor: pointer;
}

.services__intro-img:hover {
    transform: scale(1.05);
}

.services__intro-text {
    padding: var(--spacing-lg);
}

.services__intro-text p {
    color: var(--color-text-light);
    line-height: 1.8;
    font-size: var(--font-size-lg);
}

.services__content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.services__card {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.services__card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.services__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--border-radius-full);
    color: var(--color-white);
}

.services__title {
    font-size: var(--font-size-xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-md);
}

.services__description {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* Gallery Section */
.gallery {
    background-color: var(--color-background);
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.gallery__item {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    aspect-ratio: 4/3;
}

.gallery__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
    cursor: pointer;
}

.gallery__img:hover {
    transform: scale(1.1);
}

/* Contact Section */
.contact {
    background-color: var(--color-background-alt);
}

.contact__content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.contact__info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.contact__card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
}

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

.contact__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: var(--border-radius-full);
    color: var(--color-white);
}

.contact__title {
    font-size: var(--font-size-lg);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.contact__text {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.contact__text a {
    color: var(--color-text-light);
    word-break: break-all;
}

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

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

.contact__img {
    width: 100%;
    height: auto;
    cursor: pointer;
    transition: transform var(--transition-slow);
}

.contact__img:hover {
    transform: scale(1.05);
}

/* Footer */
.footer {
    background-color: var(--color-background-dark);
    color: var(--color-white);
    padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer__brand {
    padding-right: var(--spacing-xl);
}

.footer__logo {
    height: 100px;
    width: auto;
    max-width: 400px;
    margin-bottom: var(--spacing-lg);
    background-color: var(--color-white);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    object-fit: contain;
}

.footer__description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
    font-size: var(--font-size-sm);
}

.footer__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-secondary-light);
}

.footer__contact p {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.footer__contact a {
    color: rgba(255, 255, 255, 0.8);
}

.footer__contact a:hover {
    color: var(--color-secondary-light);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-size-sm);
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox__close {
    position: absolute;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    font-size: var(--font-size-4xl);
    color: var(--color-white);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
    line-height: 1;
}

.lightbox__close:hover {
    color: var(--color-secondary);
}

.lightbox__image {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: var(--border-radius-md);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: var(--spacing-lg);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal__content {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    padding: var(--spacing-2xl);
}

.modal__close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    font-size: var(--font-size-2xl);
    color: var(--color-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
    line-height: 1;
}

.modal__close:hover {
    color: var(--color-text);
}

.modal__title {
    font-size: var(--font-size-2xl);
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-xl);
    padding-right: var(--spacing-2xl);
}

.modal__body {
    color: var(--color-text);
    line-height: 1.8;
}

.modal__body h3 {
    font-size: var(--font-size-xl);
    color: var(--color-primary-dark);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.modal__body h4 {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.modal__body p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

.modal__body ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
}

.modal__body li {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
    list-style-type: disc;
}

.modal__body a {
    color: var(--color-primary);
    text-decoration: underline;
}

.modal__body a:hover {
    color: var(--color-primary-light);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Responsive Design */
@media screen and (max-width: 1024px) {
    .about__content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .about__image {
        order: -1;
    }
    
    .about__team-content {
        grid-template-columns: 1fr;
    }
    
    .services__intro {
        grid-template-columns: 1fr;
    }
    
    .services__content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact__content {
        grid-template-columns: 1fr;
    }
    
    .contact__info {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact__image {
        display: none;
    }
    
    .footer__content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media screen and (max-width: 768px) {
    :root {
        --header-height: 120px;
    }
    
    .nav__logo-img {
        height: 60px;
        max-width: 250px;
    }
    
    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-white);
        box-shadow: var(--shadow-xl);
        padding: var(--spacing-4xl) var(--spacing-xl);
        transition: right var(--transition-normal);
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav__menu.active {
        right: 0;
    }
    
    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
        width: 100%;
    }
    
    .nav__link {
        font-size: var(--font-size-lg);
        color: var(--color-text);
    }
    
    .nav__link:hover,
    .nav__link.active {
        color: var(--color-primary);
        opacity: 1;
    }
    
    .nav__link::after {
        background-color: var(--color-secondary);
    }
    
    .nav__toggle {
        display: block;
    }
    
    .nav__close {
        display: block;
        position: absolute;
        top: var(--spacing-lg);
        right: var(--spacing-lg);
        font-size: var(--font-size-3xl);
        color: var(--color-text);
    }
    
    .hero__title {
        font-size: var(--font-size-3xl);
    }
    
    .hero__subtitle {
        font-size: var(--font-size-base);
    }
    
    .section__title {
        font-size: var(--font-size-2xl);
    }
    
    .services__content {
        grid-template-columns: 1fr;
    }
    
    .gallery__grid {
        grid-template-columns: 1fr;
    }
    
    .contact__info {
        grid-template-columns: 1fr;
    }
    
    .footer__content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer__brand {
        padding-right: 0;
    }
    
    .footer__logo {
        margin: 0 auto var(--spacing-lg);
    }
    
    .footer__list {
        align-items: center;
    }
}

@media screen and (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .nav__logo-img {
        height: 50px;
        max-width: 200px;
    }
    
    .footer__logo {
        height: 80px;
        max-width: 300px;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .hero__content {
        padding: var(--spacing-md);
    }
    
    .hero__title {
        font-size: var(--font-size-2xl);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
    
    .services__card {
        padding: var(--spacing-lg);
    }
    
    .modal__content {
        padding: var(--spacing-lg);
    }
    
    .modal__title {
        font-size: var(--font-size-xl);
    }
}

/* Print Styles */
@media print {
    .header,
    .lightbox,
    .modal {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .hero__background {
        display: none;
    }
    
    .hero__content {
        color: var(--color-text);
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
}