/* CSS Variables - Corporate Design Colors */
:root {
    /* Primary Blue */
    --primary-blue: #006B99;
    --blue-dark: #0D4E6E;
    --blue-medium: #0D5A81;
    --blue-light: #2C8CBE;
    --blue-lighter: #2C9BD2;
    
    /* Secondary Green */
    --primary-green: #96C21C;
    --green-dark: #61AF2A;
    --green-medium: #79B925;
    --green-light: #AACB52;
    --green-lighter: #C6DB8C;
    
    /* Text / Neutral */
    --text-color: #333333;
    --text-light: #666666;
    --white: #ffffff;
    --gray-light: #f5f7fa;
    --gray-border: #e1e5eb;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.16);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

ul {
    list-style: none;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

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

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

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-blue);
}

.logo-tagline {
    font-size: 12px;
    color: var(--text-light);
    margin-top: -4px;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

.nav-menu a {
    font-weight: 500;
    color: var(--text-color);
    padding: 8px 0;
    position: relative;
}

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

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

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-color);
    transition: all var(--transition-normal);
}

/* Hero Section */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--gray-light) 0%, var(--white) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

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

.hero-content h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-color);
}

.hero-content .highlight {
    color: var(--primary-blue);
}

.hero-content p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-graphic {
    position: relative;
    width: 100%;
    max-width: 400px;
    aspect-ratio: 1;
    margin: 0 auto;
}

.graphic-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--blue-lighter) 0%, var(--primary-blue) 100%);
    opacity: 0.2;
}

.graphic-bars {
    position: absolute;
    bottom: 20%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
    align-items: flex-end;
}

.bar {
    width: 40px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    animation: barGrow 2s ease-in-out infinite;
}

.bar-1 {
    height: 80px;
    background: var(--primary-green);
    animation-delay: 0s;
}

.bar-2 {
    height: 140px;
    background: var(--primary-blue);
    animation-delay: 0.3s;
}

.bar-3 {
    height: 100px;
    background: var(--green-medium);
    animation-delay: 0.6s;
}

@keyframes barGrow {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(1.1); }
}

/* Section Styles */
.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-color);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 48px;
}

/* Services Section */
.services {
    padding: 100px 0;
    background-color: var(--white);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.service-card {
    background-color: var(--white);
    border: 1px solid var(--gray-border);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    transition: all var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
}

.service-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--blue-lighter) 0%, var(--primary-blue) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--white);
}

.service-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-color);
}

.service-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.6;
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--gray-light);
}

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

.about .section-title {
    text-align: left;
}

.about-content p {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 24px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
}

.check-icon {
    width: 24px;
    height: 24px;
    background-color: var(--primary-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    flex-shrink: 0;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat {
    background-color: var(--white);
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 8px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background-color: var(--white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--green-light) 0%, var(--primary-green) 100%);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.contact-item h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.contact-item p {
    font-size: 14px;
    color: var(--text-light);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 16px;
    font-size: 16px;
    border: 1px solid var(--gray-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 107, 153, 0.1);
}

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

/* Footer */
.footer {
    background-color: var(--blue-dark);
    color: var(--white);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo-text {
    color: var(--white);
    margin-bottom: 12px;
    display: block;
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

/* Chatbot Styles */
.chatbot-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
}

.chat-toggle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.chat-toggle:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 32px rgba(0, 107, 153, 0.4);
}

.chat-toggle svg {
    width: 28px;
    height: 28px;
    color: var(--white);
    transition: all var(--transition-normal);
}

.chat-toggle .close-icon {
    display: none;
}

.chat-toggle.active .chat-icon {
    display: none;
}

.chat-toggle.active .close-icon {
    display: block;
}

.chat-window {
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 380px;
    height: 520px;
    background-color: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px) scale(0.95);
    transition: all var(--transition-normal);
}

.chat-window.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-dark) 100%);
    color: var(--white);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-avatar {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-avatar svg {
    width: 24px;
    height: 24px;
    color: var(--white);
}

.chat-header h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 2px;
}

.chat-status {
    font-size: 12px;
    color: var(--green-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-status::before {
    content: '';
    width: 8px;
    height: 8px;
    background-color: var(--primary-green);
    border-radius: 50%;
}

.chat-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-close svg {
    width: 20px;
    height: 20px;
    color: var(--white);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.chat-close:hover svg {
    opacity: 1;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background-color: var(--gray-light);
}

.chat-message {
    max-width: 85%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 15px;
    line-height: 1.5;
    animation: messageSlide 0.3s ease;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-message.bot {
    background-color: var(--white);
    color: var(--text-color);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    box-shadow: var(--shadow-sm);
}

.chat-message.user {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--blue-medium) 100%);
    color: var(--white);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-input-container {
    padding: 16px 20px;
    background-color: var(--white);
    border-top: 1px solid var(--gray-border);
    display: flex;
    gap: 12px;
}

.chat-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 15px;
    border: 1px solid var(--gray-border);
    border-radius: var(--radius-xl);
    outline: none;
    transition: all var(--transition-fast);
}

.chat-input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 107, 153, 0.1);
}

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

.chat-send {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--green-dark) 100%);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.chat-send:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

.chat-send svg {
    width: 20px;
    height: 20px;
    color: var(--white);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background-color: var(--white);
    border-radius: var(--radius-md);
    border-bottom-left-radius: 4px;
    align-self: flex-start;
    box-shadow: var(--shadow-sm);
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background-color: var(--text-light);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.4;
    }
    30% {
        transform: translateY(-4px);
        opacity: 1;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-stats {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--white);
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 36px;
    }
    
    .hero-content p {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-graphic {
        max-width: 280px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .chat-window {
        width: calc(100vw - 48px);
        height: calc(100vh - 140px);
        max-height: 520px;
        right: -12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-content h1 {
        font-size: 28px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .about-stats {
        grid-template-columns: 1fr;
    }
    
    .stat {
        padding: 24px;
    }
    
    .chatbot-container {
        bottom: 16px;
        right: 16px;
    }
    
    .chat-toggle {
        width: 56px;
        height: 56px;
    }
    
    .chat-window {
        bottom: 72px;
        right: -8px;
        width: calc(100vw - 32px);
    }
}

/* Scrollbar Styling */
.chat-messages::-webkit-scrollbar {
    width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background-color: var(--gray-border);
    border-radius: 3px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-light);
}