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

:root {
    --primary-color: #005F9E;
    --secondary-color: #0A8CC9;
    --accent-color: #FF6B35;
    --success-color: #22c55e;
    --error-color: #ef4444;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-white: #ffffff;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

section {
    padding: 80px 0;
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    color: var(--text-dark);
}

.underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 20px auto;
    border-radius: 2px;
}

.section-description {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-top: 15px;
}

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

.navbar {
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

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

.btn-download-nav {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white !important;
    padding: 10px 25px;
    border-radius: 25px;
    transition: var(--transition);
}

.btn-download-nav::after {
    display: none;
}

.btn-download-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.burger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

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

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #005F9E 0%, #0A8CC9 100%);
    color: white;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0.1;
    background-image: 
        repeating-linear-gradient(45deg, transparent, transparent 35px, rgba(255,255,255,.1) 35px, rgba(255,255,255,.1) 70px);
    animation: moveBackground 20s linear infinite;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(70px, 70px);
    }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    line-height: 1.2;
}

.version {
    font-size: 1.3rem;
    opacity: 0.9;
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2.5rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.fade-in {
    animation: fadeInUp 1s ease-out;
}

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

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: #ff5722;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    transform: translateY(-3px);
}

/* ===== Introduction Section ===== */
.intro {
    background: var(--bg-white);
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    align-items: start;
}

.intro-text {
    font-size: 1.1rem;
    color: var(--text-light);
}

.intro-text .lead {
    font-size: 1.3rem;
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.intro-text p {
    margin-bottom: 1.2rem;
}

.intro-stats {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat-card {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    color: white;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.95;
}

/* ===== Screenshots Gallery Section ===== */
.screenshots {
    background: var(--bg-white);
    padding: 80px 0;
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.screenshot-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    aspect-ratio: 16 / 9;
}

.screenshot-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.screenshot-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 95, 158, 0.9), rgba(10, 140, 201, 0.9));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    color: white;
}

.screenshot-item:hover .screenshot-overlay {
    opacity: 1;
}

.screenshot-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.screenshot-item:hover img {
    transform: scale(1.1);
}

.zoom-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.screenshot-overlay p {
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

/* ===== Modal for Screenshots ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease-out;
}

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

.modal-content {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    animation: zoomIn 0.3s ease-out;
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.modal-close {
    position: fixed;
    top: 20px;
    right: 20px;
    color: white;
    font-size: 40px;
    font-weight: 300;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10001;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    line-height: 1;
}

.modal-close:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
    transform: rotate(90deg) scale(1.1);
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.5);
}

.modal-caption {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 1.2rem;
    text-align: center;
    padding: 15px 30px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 25px;
}

/* ===== Features Section ===== */
.features {
    background: var(--bg-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-white);
    padding: 35px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.feature-icon {
    margin-bottom: 20px;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== Pros and Cons Section ===== */
.pros-cons {
    background: var(--bg-white);
}

.pros-cons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 40px;
}

.pros-header,
.cons-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
}

.pros-header h3 {
    color: var(--success-color);
    margin: 0;
}

.cons-header h3 {
    color: var(--error-color);
    margin: 0;
}

.pros-list,
.cons-list {
    list-style: none;
}

.pros-list li,
.cons-list li {
    display: flex;
    gap: 15px;
    padding: 20px;
    margin-bottom: 15px;
    background: var(--bg-light);
    border-radius: 10px;
    transition: var(--transition);
}

.pros-list li:hover,
.cons-list li:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.pros-list .icon {
    color: var(--success-color);
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.cons-list .icon {
    color: var(--error-color);
    font-size: 1.5rem;
    font-weight: bold;
    flex-shrink: 0;
}

.pros-list strong,
.cons-list strong {
    display: block;
    color: var(--text-dark);
    margin-bottom: 5px;
}

.pros-list p,
.cons-list p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
}

/* ===== FAQ Section ===== */
.faq {
    background: var(--bg-light);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    cursor: pointer;
    background: var(--bg-light);
    transition: var(--transition);
    user-select: none;
}

.faq-question:hover {
    background: linear-gradient(135deg, rgba(0, 95, 158, 0.05), rgba(10, 140, 201, 0.05));
}

.faq-item.active .faq-question {
    background: linear-gradient(135deg, rgba(0, 95, 158, 0.1), rgba(10, 140, 201, 0.1));
}

.faq-question h3 {
    margin: 0;
    font-size: 1.2rem;
    color: var(--text-dark);
    flex: 1;
    padding-right: 20px;
}

.faq-toggle {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
    transition: var(--transition);
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: white;
    flex-shrink: 0;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
    background: var(--primary-color);
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.4s ease-out;
    padding: 0 30px;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 25px 30px;
}

.faq-answer p {
    margin: 0;
    color: var(--text-light);
    line-height: 1.8;
    font-size: 1.05rem;
}

/* ===== Feedback Section ===== */
.feedback {
    background: var(--bg-light);
}

.feedback-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 50px;
}

.feedback-form-container {
    position: relative;
}

.contact-form {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-white);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    box-shadow: var(--shadow-md);
}

.form-success.active {
    display: flex;
    animation: fadeInUp 0.5s ease-out;
}

.form-success h3 {
    color: var(--success-color);
    margin: 20px 0 10px;
}

.form-success p {
    color: var(--text-light);
}

.contact-info {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    height: fit-content;
}

.contact-info h3 {
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.contact-item svg {
    flex-shrink: 0;
}

.contact-item h4 {
    color: var(--text-dark);
    margin-bottom: 5px;
    font-size: 1.1rem;
}

.contact-item p {
    color: var(--text-light);
    margin: 0;
}

/* ===== Download Section ===== */
.download {
    background: linear-gradient(135deg, #005F9E 0%, #0A8CC9 100%);
    color: white;
}

.download .section-header h2,
.download .section-header .section-description {
    color: white;
}

.download-content {
    max-width: 800px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-white);
    border-radius: 20px;
    padding: 50px;
    box-shadow: var(--shadow-lg);
    color: var(--text-dark);
}

.download-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 15px;
}

.download-header h3 {
    color: var(--primary-color);
    font-size: 2rem;
}

.version-badge {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.download-features {
    margin-bottom: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 1.05rem;
    color: var(--text-dark);
}

.system-requirements {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 12px;
    margin-bottom: 30px;
}

.system-requirements h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.system-requirements ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 12px;
}

.system-requirements li {
    color: var(--text-light);
    font-size: 0.95rem;
}

.btn-download {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 18px 40px;
    font-size: 1.2rem;
    justify-content: center;
    margin-bottom: 15px;
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 95, 158, 0.4);
}

.download-note {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    margin-bottom: 20px;
    color: white;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: white;
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

/* ===== Scroll to Top Button ===== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    z-index: 999;
}

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

.scroll-to-top.active {
    display: flex;
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--bg-white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        padding: 30px 0;
        gap: 20px;
    }

    .nav-menu.active {
        left: 0;
    }

    .burger {
        display: flex;
    }

    .burger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-6px, 6px);
    }

    .burger.active span:nth-child(2) {
        opacity: 0;
    }

    .burger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-6px, -6px);
    }

    .intro-content {
        grid-template-columns: 1fr;
    }

    .pros-cons-grid {
        grid-template-columns: 1fr;
    }

    .feedback-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero h1 {
        font-size: 2.2rem;
        line-height: 1.3;
    }

    section {
        padding: 50px 0;
    }

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

    .screenshots-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }

    .download-card {
        padding: 30px 20px;
    }

    .system-requirements ul {
        grid-template-columns: 1fr;
    }

    .modal-close {
        top: 10px;
        right: 10px;
        font-size: 35px;
        width: 45px;
        height: 45px;
    }

    .modal-content {
        max-width: 95%;
        max-height: 85%;
    }
    
    .modal-caption {
        bottom: 15px;
        font-size: 1rem;
        padding: 10px 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    h1 {
        font-size: 2rem;
    }

    .hero h1 {
        font-size: 1.7rem;
        line-height: 1.4;
    }

    .version {
        font-size: 1.1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .contact-form {
        padding: 25px;
    }

    .contact-info {
        padding: 25px;
    }
}