/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #0097b2;
    --color-secondary: #00b8d4;
    --color-accent: #F97316;
    --color-dark: #1F2937;
    --color-light: #F3F4F6;
    --color-white: #FFFFFF;
    --color-text: #1F2937;
    --color-text-light: #6B7280;
    
    /* Typography */
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-h1: 3.5rem;
    --font-size-h2: 2.5rem;
    --font-size-h3: 1.875rem;
    --font-size-h4: 1.5rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;
    
    /* Layout */
    --container-width: 1200px;
    --container-padding: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

h4 {
    font-size: var(--font-size-h4);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

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

ul {
    list-style: none;
}

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

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

/* Section */
.section {
    padding: var(--spacing-2xl) 0;
}

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

.section__title {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.section__subtitle {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

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

.btn--primary:hover {
    background-color: #007a8f;
    border-color: #007a8f;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

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

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

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

.btn--full {
    width: 100%;
}

.btn__text {
    display: inline-block;
}

.btn__loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-xs);
}

.btn.loading .btn__text {
    display: none;
}

.btn.loading .btn__loader {
    display: inline-block;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-base);
    overflow: visible;
}

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem var(--container-padding);
    height: 70px;
}

.nav__logo a {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    transition: var(--transition-base);
    text-decoration: none;
}

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

.nav__logo img {
    height: 35px;
    width: auto;
}

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

.nav__link {
    font-weight: 500;
    color: var(--color-text);
    padding: 0.5rem 0;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    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__link:hover {
    color: var(--color-primary);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
}

.nav__toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--color-dark);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* Simple Dropdown Menu */
.nav__item--dropdown {
    position: relative;
}

.nav__link--dropdown {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.dropdown-arrow {
    width: 14px;
    height: 14px;
    transition: transform 0.2s;
}

.nav__item--dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.nav__dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    min-width: 220px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 8px 0;
    margin-top: 8px;
    display: none;
    z-index: 1001;
    border: 1px solid #e5e7eb;
}

.nav__item--dropdown:hover .nav__dropdown {
    display: block;
}

.nav__dropdown-link {
    display: block;
    padding: 10px 20px;
    color: #1F2937;
    font-weight: 400;
    font-size: 0.95rem;
    text-decoration: none;
    transition: background-color 0.2s;
}

.nav__dropdown-link:hover {
    color: #0097b2;
    background-color: #F3F4F6;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

.hero__container {
    position: relative;
    z-index: 2;
    width: 100%;
}

.hero__content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.hero__title {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
    line-height: 1.1;
}

.hero__subtitle {
    font-size: var(--font-size-large);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

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

.hero__gradient {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 151, 178, 0.1) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

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

.about__content {
    display: grid;
    gap: var(--spacing-xl);
}

.about__text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about__description {
    font-size: var(--font-size-large);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.about__features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

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

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

.feature-card__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card__title {
    font-size: var(--font-size-h4);
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.feature-card__description {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
}

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

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-light);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-base);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.service-card__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-sm);
}

.service-card__icon .icon-svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-primary);
    transition: var(--transition-base);
}

.service-card:hover .service-card__icon .icon-svg {
    stroke: var(--color-secondary);
    transform: scale(1.1);
}

.service-card__title {
    font-size: var(--font-size-h4);
    margin-bottom: var(--spacing-xs);
    color: var(--color-dark);
}

.service-card__description {
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-small);
}

.service-card__list {
    margin-top: var(--spacing-sm);
}

.service-card__list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

.service-card__list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.service-card__link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: var(--transition-base);
    text-decoration: none;
}

.service-card__link:hover {
    color: var(--color-secondary);
    transform: translateX(5px);
}

/* Pricing Section */
.pricing {
    background-color: var(--color-light);
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.pricing-card {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition-base);
    position: relative;
    border: 2px solid transparent;
}

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

.pricing-card--featured {
    border-color: var(--color-primary);
    transform: scale(1.05);
}

.pricing-card--featured:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-card__badge {
    position: absolute;
    top: -15px;
    right: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--color-white);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-small);
    font-weight: 600;
}

.pricing-card__header {
    text-align: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-light);
}

.pricing-card__title {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.pricing-card__price {
    margin-top: var(--spacing-sm);
}

.pricing-card__amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
}

.pricing-card__features {
    margin-bottom: var(--spacing-md);
    min-height: 200px;
}

.pricing-card__features li {
    padding: 0.75rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-light);
}

.pricing-card__features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.2rem;
}

.pricing__note {
    text-align: center;
    color: var(--color-text-light);
    font-style: italic;
    margin-top: var(--spacing-lg);
}

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

.contact__content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.contact__icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.contact__details {
    flex: 1;
}

.contact__label {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 0.25rem;
}

.contact__value {
    color: var(--color-text-light);
    transition: var(--transition-base);
}

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

/* Contact Form */
.contact__form {
    background-color: var(--color-light);
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
}

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

.form__label {
    display: block;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-base);
}

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

.form__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 151, 178, 0.1);
}

.form__input::placeholder {
    color: var(--color-text-light);
}

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

.form__error {
    display: block;
    color: #EF4444;
    font-size: var(--font-size-small);
    margin-top: 0.25rem;
    min-height: 1.25rem;
}

.form__success {
    display: none;
    padding: var(--spacing-sm);
    background-color: #10B981;
    color: var(--color-white);
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--spacing-sm);
}

.form__success.show {
    display: block;
}

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

.footer__content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer__section {
    display: flex;
    flex-direction: column;
}

.footer__title {
    font-size: var(--font-size-h4);
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer__description {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
}

.footer__heading {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer__links a {
    color: var(--color-text-light);
    transition: var(--transition-base);
}

.footer__links a:hover {
    color: var(--color-white);
    padding-left: 0.5rem;
}

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

.footer__copyright {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}