/* SmartSoft Website Styles
   Color Scheme: White, Grey, #6DBE45 (Green)
*/

/* ===== CSS Variables ===== */
:root {
    --primary-green: #6DBE45;
    --primary-green-dark: #5aa038;
    --primary-green-light: #8ed066;
    --dark-gray: #333333;
    --medium-gray: #666666;
    --light-gray: #999999;
    --lighter-gray: #f5f5f5;
    --border-gray: #e0e0e0;
    --white: #ffffff;
    --black: #000000;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-dark: rgba(0, 0, 0, 0.15);
    --transition: all 0.3s ease;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
}

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

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

ul, ol {
    list-style: none;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

/* ===== Utility Classes ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-center { text-align: center; }
.text-green { color: var(--primary-green); }
.bg-gray { background-color: var(--lighter-gray); }
.bg-white { background-color: var(--white); }

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.section-header h2 span {
    color: var(--primary-green);
}

.section-header p {
    color: var(--medium-gray);
    max-width: 700px;
    margin: 0 auto;
}

.underline {
    width: 60px;
    height: 4px;
    background: var(--primary-green);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(109, 190, 69, 0.4);
}

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

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

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

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

/* ===== Header & Navigation ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--white);
    box-shadow: 0 2px 10px var(--shadow);
    transition: var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo img {
    height: 45px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--dark-gray);
    position: relative;
    padding: 5px 0;
}

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

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

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

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

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

/* ===== Hero Section ===== */
.hero {
    padding: 150px 0 100px;
    background: linear-gradient(135deg, var(--lighter-gray) 0%, var(--white) 100%);
    min-height: 80vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero-content h1 span {
    color: var(--primary-green);
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--medium-gray);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-graphic {
    width: 100%;
    max-width: 500px;
    padding: 40px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: 0 20px 60px var(--shadow);
}

.hero-graphic .code-block {
    background: var(--dark-gray);
    border-radius: 10px;
    padding: 20px;
    color: var(--white);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.8;
}

.hero-graphic .code-block .green { color: var(--primary-green); }
.hero-graphic .code-block .gray { color: var(--light-gray); }

/* ===== About Section ===== */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text p {
    color: var(--medium-gray);
    margin-bottom: 20px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.stat-item {
    text-align: center;
    padding: 25px;
    background: var(--lighter-gray);
    border-radius: 10px;
}

.stat-item .number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-green);
}

.stat-item .label {
    color: var(--medium-gray);
    margin-top: 5px;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
}

.feature-item {
    display: flex;
    gap: 15px;
    padding: 20px;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 20px var(--shadow);
}

.feature-item i {
    font-size: 2rem;
    color: var(--primary-green);
}

.feature-item h4 {
    margin-bottom: 5px;
}

.feature-item p {
    color: var(--medium-gray);
    font-size: 0.9rem;
    margin: 0;
}

/* ===== Services Section ===== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--white);
    border-radius: 15px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: 0 5px 30px var(--shadow);
    transition: var(--transition);
    border: 1px solid transparent;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-green);
    box-shadow: 0 15px 40px var(--shadow-dark);
}

.service-card .icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
}

.service-card .icon i {
    font-size: 2rem;
    color: var(--white);
}

.service-card h3 {
    margin-bottom: 15px;
}

.service-card p {
    color: var(--medium-gray);
    margin-bottom: 20px;
}

/* ===== Technologies Section ===== */
.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.tech-category {
    background: var(--white);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px var(--shadow);
}

.tech-category h4 {
    color: var(--primary-green);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-green);
}

.tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    background: var(--lighter-gray);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--dark-gray);
    transition: var(--transition);
}

.tech-tag:hover {
    background: var(--primary-green);
    color: var(--white);
}

/* ===== Portfolio Section ===== */
.portfolio-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: var(--lighter-gray);
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-green);
    color: var(--white);
}

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

.portfolio-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px var(--shadow);
    transition: var(--transition);
}

.portfolio-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px var(--shadow-dark);
}

.portfolio-image {
    position: relative;
    height: 220px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.portfolio-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.portfolio-image .placeholder-icon {
    font-size: 4rem;
    color: var(--white);
    opacity: 0.5;
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(109, 190, 69, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.portfolio-card:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-overlay a {
    width: 50px;
    height: 50px;
    background: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
    font-size: 1.2rem;
}

.portfolio-content {
    padding: 25px;
}

.portfolio-category {
    color: var(--primary-green);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.portfolio-content h3 {
    margin: 10px 0;
}

.portfolio-content p {
    color: var(--medium-gray);
    font-size: 0.95rem;
    margin-bottom: 0;
}

/* ===== Portfolio Detail ===== */
.portfolio-detail {
    padding-top: 120px;
}

.portfolio-detail-header {
    background: linear-gradient(135deg, var(--lighter-gray) 0%, var(--white) 100%);
    padding: 60px 0;
}

.portfolio-detail-content {
    padding: 60px 0;
}

.detail-section {
    margin-bottom: 40px;
}

.detail-section h3 {
    color: var(--primary-green);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-gray);
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 15px;
    background: var(--lighter-gray);
    border-radius: 8px;
}

.feature-list li i {
    color: var(--primary-green);
    margin-top: 3px;
}

/* ===== Clients Section ===== */
.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
    align-items: center;
}

.client-item {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 15px var(--shadow);
    transition: var(--transition);
}

.client-item:hover {
    transform: scale(1.05);
}

.client-item img {
    max-height: 60px;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition);
}

.client-item:hover img {
    filter: grayscale(0);
    opacity: 1;
}

.client-item span {
    display: block;
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--medium-gray);
}

/* ===== News Section ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-image i {
    font-size: 3rem;
    color: var(--white);
    opacity: 0.5;
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    font-size: 0.85rem;
    color: var(--light-gray);
}

.news-meta i {
    margin-right: 5px;
    color: var(--primary-green);
}

.news-content h3 {
    margin-bottom: 15px;
}

.news-content h3 a:hover {
    color: var(--primary-green);
}

.news-content p {
    color: var(--medium-gray);
    margin-bottom: 20px;
}

.read-more {
    color: var(--primary-green);
    font-weight: 600;
}

.read-more:hover {
    color: var(--primary-green-dark);
}

.read-more i {
    margin-left: 5px;
    transition: var(--transition);
}

.read-more:hover i {
    margin-left: 10px;
}

/* ===== Contact Section ===== */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
}

.contact-info {
    background: var(--primary-green);
    padding: 40px;
    border-radius: 15px;
    color: var(--white);
}

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

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

.info-item .icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-item .icon i {
    font-size: 1.2rem;
}

.info-item h4 {
    color: var(--white);
    margin-bottom: 5px;
}

.info-item p, .info-item a {
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
}

.info-item a:hover {
    color: var(--white);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 40px;
}

.social-links a {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--white);
    color: var(--primary-green);
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px var(--shadow);
}

.contact-form h3 {
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-gray);
}

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

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(109, 190, 69, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 25px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

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

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand img {
    height: 45px;
    margin-bottom: 20px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
}

.footer h4 {
    color: var(--white);
    margin-bottom: 25px;
    font-size: 1.1rem;
}

.footer-links a {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-green);
    padding-left: 5px;
}

.footer-contact p {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 15px;
}

.footer-contact i {
    color: var(--primary-green);
    margin-top: 4px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-green);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    font-size: 0.9rem;
}

/* ===== Page Headers ===== */
.page-header {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
    padding: 150px 0 80px;
    color: var(--white);
    text-align: center;
}

.page-header h1 {
    color: var(--white);
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.page-header p {
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.breadcrumb {
    margin-top: 20px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
    color: var(--white);
}

.breadcrumb span {
    margin: 0 10px;
    opacity: 0.6;
}

/* ===== Pagination ===== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.pagination a,
.pagination span {
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--white);
    border: 1px solid var(--border-gray);
    transition: var(--transition);
}

.pagination a:hover,
.pagination .current {
    background: var(--primary-green);
    color: var(--white);
    border-color: var(--primary-green);
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    box-shadow: 0 5px 20px rgba(109, 190, 69, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-green-dark);
    transform: translateY(-5px);
}

/* ===== Loading Animation ===== */
.loading {
    display: flex;
    justify-content: center;
    padding: 50px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-gray);
    border-top-color: var(--primary-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 75px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        gap: 0;
        padding: 20px;
        box-shadow: 0 10px 30px var(--shadow);
        transform: translateX(-100%);
        transition: var(--transition);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-menu a {
        padding: 15px 0;
        border-bottom: 1px solid var(--border-gray);
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .services-grid,
    .portfolio-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        justify-content: center;
        text-align: center;
    }
    
    .page-header {
        padding: 120px 0 60px;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .portfolio-filters {
        gap: 10px;
    }
    
    .filter-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}