/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
    /* Colors - Professional & Subdued */
    --primary-color: #2c3e50;
    --primary-dark: #1a252f;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --accent-dark: #2980b9;

    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #95a5a6;

    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #ecf0f1;

    --border-color: #dfe6e9;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);

    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Layout */
    --container-width: 1200px;
    --header-height: 70px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

/* ===========================
   Typography
   =========================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

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

a:hover {
    color: var(--accent-dark);
}

/* ===========================
   Layout Components
   =========================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

.section__title {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.section__description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

/* ===========================
   Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--accent-dark);
    border-color: var(--accent-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-outline {
    background-color: transparent;
    color: white;
    border-color: white;
}

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

.btn-text {
    padding: 0.5rem 1rem;
    color: var(--accent-color);
    font-weight: 500;
}

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

/* ===========================
   Header & Navigation
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    height: var(--header-height);
}

.nav {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav__logo {
    display: flex;
    flex-direction: column;
    color: var(--primary-color);
}

.logo__text {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo__subtitle {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: -4px;
}

.nav__list {
    display: flex;
    gap: var(--spacing-md);
    list-style: none;
    align-items: center;
}

.nav__link {
    color: var(--text-primary);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
    color: var(--accent-color);
    background-color: var(--bg-secondary);
}

.dropdown {
    position: relative;
}

.dropdown__menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 250px;
    box-shadow: var(--shadow-lg);
    border-radius: 6px;
    padding: var(--spacing-xs);
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.dropdown:hover .dropdown__menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown__menu li {
    margin: 0;
}

.dropdown__menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.dropdown__menu a:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-color);
}

.nav__toggle {
    display: none;
    font-size: 1.75rem;
    cursor: pointer;
    color: var(--primary-color);
    transition: color 0.3s;
    background: none;
    border: none;
    padding: 0.5rem;
}

.nav__close {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
    transition: color 0.3s;
}

.nav__toggle:hover,
.nav__close:hover {
    color: var(--accent-color);
}

/* Show hamburger on mobile */
@media screen and (max-width: 768px) {
    .nav__toggle {
        display: block;
    }
}

/* ===========================
   Hero Section
   =========================== */
.hero {
    margin-top: var(--header-height);
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    padding: var(--spacing-xl) 0;
    min-height: 600px;
}

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

.hero__content {
    padding-right: var(--spacing-md);
}

.hero__title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero__description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.hero__image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero__image-placeholder::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="white" stroke-width="2" opacity="0.1"/></svg>');
    opacity: 0.5;
}

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

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

.service__card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

.service__card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.service__icon {
    width: 70px;
    height: 70px;
    background-color: var(--bg-secondary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
}

.service__title {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
}

.service__description {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.service__features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.service__features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--bg-tertiary);
    font-size: 0.9rem;
}

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

.service__features li::before {
    content: '✓ ';
    color: var(--accent-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

.service__link {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.service__link:hover {
    transform: translateX(4px);
}

/* ===========================
   Why Choose Us Section
   =========================== */
.why-choose {
    background-color: var(--bg-secondary);
}

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

.feature__item {
    text-align: center;
    padding: var(--spacing-md);
}

.feature__icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-sm);
    background-color: var(--accent-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.feature__title {
    margin-bottom: var(--spacing-xs);
    color: var(--primary-color);
}

.feature__description {
    color: var(--text-secondary);
}

/* ===========================
   Blog Section
   =========================== */
.blog-preview {
    background-color: var(--bg-primary);
}

.blog-preview .section__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
}

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

.blog__card {
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    transition: all var(--transition-base);
}

.blog__card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.blog__image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
}

.blog__content {
    padding: var(--spacing-md);
}

.blog__date {
    display: inline-block;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-xs);
}

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

.blog__excerpt {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
}

.blog__link {
    color: var(--accent-color);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.blog__link:hover {
    color: var(--accent-dark);
}

/* ===========================
   CTA Section
   =========================== */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.cta__title {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.cta__description {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
    color: rgba(255, 255, 255, 0.9);
}

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

/* ===========================
   Footer
   =========================== */
.footer {
    background-color: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

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

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

.footer__subtitle {
    color: white;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.footer__description {
    color: rgba(255, 255, 255, 0.7);
}

.footer__links {
    list-style: none;
}

.footer__links li {
    margin-bottom: var(--spacing-xs);
}

.footer__links a {
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.footer__links a:hover {
    color: white;
}

.footer__contact {
    list-style: none;
}

.footer__contact li {
    margin-bottom: var(--spacing-xs);
    color: rgba(255, 255, 255, 0.8);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
}

/* ===========================
   Responsive Design
   =========================== */
@media screen and (max-width: 968px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero__title {
        font-size: 2.25rem;
    }

    .hero__container {
        grid-template-columns: 1fr;
    }

    .hero__image-placeholder {
        height: 300px;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background-color: white;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-base);
    }

    .nav__menu.show-menu {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
    }

    .nav__item {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
    }

    .nav__link {
        display: block;
        padding: var(--spacing-sm);
    }

    .dropdown__menu {
    .nav__toggle,
    .nav__close {
        display: block;
    }

    .nav__close {
        position: absolute;
        top: 1rem;
        right: 1.5rem;
        font-size: 2rem;
        z-index: 1001;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--bg-primary);
        padding: 4rem 1.5rem 2rem;
        box-shadow: -2px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.4s ease;
        z-index: 1000;
        overflow-y: auto;
    }

    .nav__menu.show-menu {
        right: 0;
    }

    .nav__list {
        flex-direction: column;
        gap: 0;
    }

    .nav__item {
        width: 100%;
        border-bottom: 1px solid var(--bg-secondary);
    }

    .nav__link {
        display: block;
        padding: 1rem 0;
        font-size: 1.1rem;
    }

    .dropdown__menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin: 0;
        padding: 0.5rem 0 0.5rem 1rem;
        background-color: transparent;
        border-left: 2px solid var(--accent-color);
        display: none; /* Hidden by default on mobile */
    }

    .dropdown__menu li {
        margin: 0.5rem 0;
    }

    .dropdown__menu a {
        padding: 0.5rem 0;
        font-size: 0.95rem;
    }

    .dropdown.active-dropdown .dropdown__menu {
        display: block !important;
    }

    /* Arrow indicator for dropdown on mobile */
    .dropdown > .nav__link::after {
        content: '▼';
        font-size: 0.7rem;
        margin-left: 0.5rem;
        transition: transform 0.3s;
    }

    .dropdown.active-dropdown > .nav__link::after {
        transform: rotate(180deg);
    }   font-size: 1.5rem;
        cursor: pointer;
        color: var(--primary-color);
    }

    .nav__close {
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
}

@media screen and (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero__buttons,
    .cta__buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .services__grid,
    .features__grid,
    .blog__grid {
        grid-template-columns: 1fr;
    }
}