/* Base styles */
*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-bg-dark: #111827;
    --max-width: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 100;
}

.nav {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    padding: 6rem 2rem 4rem;
}

.hero-content {
    max-width: 800px;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin: 0 0 1.5rem;
    color: var(--color-text);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: background 0.2s, transform 0.2s;
}

.cta-button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 5rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

/* Services Section */
.services {
    background: var(--color-bg-alt);
    max-width: none;
    padding-left: 2rem;
    padding-right: 2rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.service-card {
    background: var(--color-bg);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin: 0 0 1rem;
}

.service-card p {
    color: var(--color-text-light);
    margin: 0;
}

/* About Section */
.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

/* Contact Section */
.contact {
    text-align: center;
    background: var(--color-bg-dark);
    color: white;
    max-width: none;
    padding: 5rem 2rem;
}

.contact h2 {
    color: white;
}

.contact p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.contact-email {
    display: inline-block;
    font-size: 1.5rem;
    color: var(--color-primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.contact-email:hover {
    color: white;
}

.cta-button-light {
    background: white;
    color: var(--color-primary);
}

.cta-button-light:hover {
    background: var(--color-bg-alt);
}

button.cta-button {
    border: none;
    cursor: pointer;
}

/* Footer */
.footer {
    background: var(--color-bg-dark);
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    margin: 0;
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .hero {
        padding-top: 8rem;
    }

    section {
        padding: 3rem 1.5rem;
    }
}

/* Feedback Button */
.feedback-button {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--color-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.25rem;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
    transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
    z-index: 90;
}

.feedback-button:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    padding: 1rem;
}

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

/* Modal */
.modal {
    background: var(--color-bg);
    border-radius: 12px;
    padding: 2rem;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-light);
    line-height: 1;
    padding: 0.25rem;
    transition: color 0.2s;
}

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

.modal h3 {
    margin: 0 0 0.5rem;
    font-size: 1.5rem;
}

.modal > p {
    color: var(--color-text-light);
    margin: 0 0 1.5rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.submit-button {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: var(--color-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.submit-button:hover {
    background: var(--color-primary-dark);
}

.submit-button:disabled {
    background: var(--color-text-light);
    cursor: not-allowed;
}

/* Feedback Success State */
.feedback-success {
    display: none;
    text-align: center;
    padding: 2rem 0;
}

.feedback-success.show {
    display: block;
}

.feedback-success .success-icon {
    width: 60px;
    height: 60px;
    background: #10b981;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1rem;
}

.feedback-success h4 {
    margin: 0 0 0.5rem;
    font-size: 1.25rem;
}

.feedback-success p {
    color: var(--color-text-light);
    margin: 0;
}

#feedbackForm.hidden {
    display: none;
}

@media (max-width: 768px) {
    .feedback-button {
        bottom: 1rem;
        right: 1rem;
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}