/* ===== ROOT VARIABLES ===== */
:root {
    /* Colors - Teal & Gold Professional Palette */
    --color-primary: #0D7C7F;
    --color-primary-light: #10A5A9;
    --color-primary-dark: #095E61;
    --color-accent: #D4AF37;
    --color-accent-light: #F4D03F;
    --color-accent-dark: #B8941F;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-black: #0A0A0A;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Poppins', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-gray-900);
}

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

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

ul {
    list-style: none;
}

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

/* ===== UTILITY CLASSES ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section--dark {
    background-color: var(--color-gray-900);
    color: var(--color-white);
}

.section--light {
    background-color: var(--color-gray-50);
}

.section__header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: rgba(13, 124, 127, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-2xl);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.section__title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: var(--spacing-md);
}

.section__description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 700px;
    margin: 0 auto;
}

.section--dark .section__description {
    color: var(--color-gray-300);
}

.text--primary {
    color: var(--color-primary);
}

.text--accent {
    color: var(--color-accent);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: var(--color-white);
    box-shadow: var(--shadow-md);
}

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

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

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

.btn--large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ===== HEADER / NAVIGATION ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-base);
}

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

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav__logo-img {
    height: 50px;
    width: auto;
}

.nav__logo-text {
    display: flex;
    flex-direction: column;
}

.nav__logo-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
}

.nav__logo-tagline {
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav__link {
    font-weight: 500;
    color: var(--color-gray-700);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-base);
}

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

.nav__toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--color-gray-900);
    cursor: pointer;
}

/* ===== HERO SECTION ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero__background {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero__gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        rgba(13, 124, 127, 0.95) 0%, 
        rgba(16, 165, 169, 0.9) 50%,
        rgba(212, 175, 55, 0.85) 100%
    );
}

.hero__pattern {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

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

.hero__content {
    color: var(--color-white);
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-2xl);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.hero__title--highlight {
    color: var(--color-accent-light);
}

.hero__description {
    font-size: 1.25rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
}

.hero__buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.hero__buttons .btn--outline {
    border-color: var(--color-white);
    color: var(--color-white);
}

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

.hero__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.stat {
    text-align: center;
}

.stat__number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.stat__number::after {
    content: '+';
}

.stat__label {
    font-size: 0.875rem;
    opacity: 0.9;
}

.hero__image {
    position: relative;
}

.hero__img {
    width: 100%;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
}

.hero__image-decoration {
    position: absolute;
    top: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    z-index: -1;
}

/* ===== SERVICES SECTION ===== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.service-card {
    background-color: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

.service-card__image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.service-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.service-card:hover .service-card__image img {
    transform: scale(1.1);
}

.service-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
}

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

.service-card__icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: var(--radius-lg);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-md);
}

.service-card__title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.service-card__description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.service-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.service-card__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-gray-700);
}

.service-card__features i {
    color: var(--color-primary);
}

/* ===== AI SOLUTIONS SECTION ===== */
.ai-solutions__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.ai-card {
    background-color: var(--color-gray-800);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.ai-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(212, 175, 55, 0.3);
}

.ai-card__header {
    height: 250px;
    overflow: hidden;
}

.ai-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.ai-card:hover .ai-card__image {
    transform: scale(1.05);
}

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

.ai-card__icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-light));
    color: var(--color-gray-900);
    border-radius: var(--radius-md);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.ai-card__title {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.ai-card__description {
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-md);
}

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

.benefit {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-gray-200);
    font-size: 0.875rem;
}

.benefit i {
    color: var(--color-accent);
}

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

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

.feature {
    display: flex;
    gap: var(--spacing-md);
}

.feature__icon {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(13, 124, 127, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    font-size: 1.5rem;
}

.feature__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xs);
}

.feature__description {
    color: var(--color-gray-600);
}

.about__image {
    position: relative;
}

.about__image img {
    width: 100%;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.about__image-decoration {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 100%;
    height: 100%;
    border: 3px solid var(--color-primary);
    border-radius: var(--radius-2xl);
    z-index: -1;
}

/* ===== PROCESS SECTION ===== */
.process__timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    position: relative;
}

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

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

.process__number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(13, 124, 127, 0.2);
    margin-bottom: var(--spacing-sm);
}

.process__title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.process__description {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

/* ===== CONTACT SECTION ===== */
.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact__description {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact__item {
    display: flex;
    gap: var(--spacing-md);
}

.contact__icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(13, 124, 127, 0.1);
    color: var(--color-primary);
    border-radius: var(--radius-lg);
    font-size: 1.25rem;
}

.contact__text h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
}

.contact__text a {
    color: var(--color-gray-600);
}

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

.contact__text p {
    color: var(--color-gray-600);
}

.contact__form-wrapper {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.contact__form-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
}

.form__group {
    margin-bottom: var(--spacing-md);
}

.form__input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form__textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__logo img {
    height: 50px;
    width: auto;
    background-color: var(--color-white);
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.footer__description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

.footer__title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

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

.footer__list li {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer__list a:hover {
    color: var(--color-accent-light);
}

.footer__bottom {
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
}

/* ===== RESPONSIVE DESIGN ===== */
@media screen and (max-width: 968px) {
    .nav__menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-xl);
        transition: var(--transition-base);
    }
    
    .nav__menu.show {
        left: 0;
    }
    
    .nav__list {
        flex-direction: column;
        width: 100%;
    }
    
    .nav__link {
        width: 100%;
        padding: var(--spacing-sm) 0;
    }
    
    .nav__cta {
        width: 100%;
        justify-content: center;
    }
    
    .nav__toggle {
        display: block;
    }
    
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about__content {
        grid-template-columns: 1fr;
    }
    
    .contact__content {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 576px) {
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero__buttons .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero__stats {
        grid-template-columns: 1fr;
    }
    
    .services__grid {
        grid-template-columns: 1fr;
    }
    
    .ai-solutions__grid {
        grid-template-columns: 1fr;
    }
    
    .process__timeline {
        grid-template-columns: 1fr;
    }
}