/* ===================================
   Modern A&S Architecture Styles
   =================================== */

/* CSS Variables for easy theming */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --text-light: #666;
    --bg-color: #fff;
    --bg-alt: #f8f9fa;
    --border-color: #e0e0e0;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
    --font-primary: 'Montserrat', 'Helvetica Neue', Arial, sans-serif;
    --font-heading: 'Archivo', 'Futura', 'Century Gothic', sans-serif;
    --font-accent: 'Raleway', 'Gill Sans', sans-serif;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
    font-weight: 400;
    letter-spacing: 0.3px;
}

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

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

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

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

/* ===================================
   Notification System
   =================================== */
.notification {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: 15px 20px;
    text-align: center;
    font-weight: 500;
    z-index: 9999;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateY(0);
}

.notification.success {
    background-color: var(--success-color);
    color: white;
}

.notification.error {
    background-color: var(--error-color);
    color: white;
}

.notification.warning {
    background-color: var(--warning-color);
    color: white;
}

/* ===================================
   Navigation Bar
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 1);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    font-family: var(--font-heading);
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: width 0.3s ease;
}

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-color);
    cursor: pointer;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background-color: white;
        width: 100%;
        padding: 20px;
        box-shadow: var(--shadow);
        transition: left 0.3s ease;
        gap: 0;
    }

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

    .nav-link {
        padding: 15px 0;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-toggle {
        display: block;
    }
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin-top: 70px;
}

.hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(44, 62, 80, 0.7), rgba(52, 152, 219, 0.5));
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.8s ease;
    filter: grayscale(100%);
}

.hero:hover .hero-image img {
    filter: grayscale(0%);
}

.hero-content {
    position: absolute;
    top: 100px;
    left: 30px;
    text-align: left;
    color: white;
    z-index: 1;
    animation: fadeInUp 1s ease;
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 30px;
    font-weight: 300;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    font-family: var(--font-accent);
    letter-spacing: 1px;
}

.hero-button {
    display: inline-block;
    padding: 15px 40px;
    background-color: var(--secondary-color);
    color: white;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.hero-button:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-content {
        left: 20px;
        top: 90px;
        max-width: calc(100% - 40px);
    }
}

/* ===================================
   Sections
   =================================== */
.section {
    padding: 80px 0;
}

.section-alt {
    background-color: var(--bg-alt);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--secondary-color);
}

.section-description {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 50px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   Projects Section
   =================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.project-card {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

.project-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: transform 0.5s ease, filter 0.5s ease;
    filter: grayscale(100%);
}

.project-card:hover img {
    transform: scale(1.1);
    filter: grayscale(0%);
}

.project-card.active img {
    filter: grayscale(0%);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
    padding: 30px 20px 20px;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.project-card:hover .project-overlay {
    transform: translateY(0);
}

.project-overlay h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.project-overlay p {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ===================================
   About Section
   =================================== */
.about-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 50px;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 50px;
}

.team-member {
    text-align: center;
    padding: 30px;
    background-color: white;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.team-member:hover .team-image img {
    filter: grayscale(0%);
}

.team-member.active .team-image img {
    filter: grayscale(0%);
}

.team-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--secondary-color);
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: filter 0.5s ease;
    filter: grayscale(100%);
}

.team-member h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.team-member h3 a {
    color: var(--primary-color);
}

.team-role {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 5px;
}

.team-credentials {
    color: var(--text-light);
    font-size: 0.9rem;
    font-style: italic;
    margin-bottom: 15px;
}

.team-bio {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* ===================================
   Services Section
   =================================== */
.services-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 50px;
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.service-card {
    background-color: white;
    padding: 40px 30px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-top: 4px solid var(--secondary-color);
}

.service-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 0.5px;
}

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

/* ===================================
   Contact Section
   =================================== */
.contact-intro {
    text-align: center;
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 50px;
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-top: 40px;
}

@media (max-width: 768px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

/* Contact Form */
.contact-form-container {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

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

.contact-form label {
    display: block;
    margin-bottom: 8px;
    color: var(--primary-color);
    font-weight: 600;
    font-family: var(--font-heading);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

.error-message {
    display: none;
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 5px;
}

.form-group.error .error-message {
    display: block;
}

.form-group.error input,
.form-group.error textarea {
    border-color: var(--error-color);
}

.submit-button {
    width: 100%;
    padding: 15px 30px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.submit-button:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.submit-button:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    transform: none;
}

/* Contact Info */
.contact-info {
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.contact-info h3 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: 1px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--secondary-color);
    margin-top: 5px;
}

.contact-item strong {
    display: block;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-item a {
    display: block;
    color: var(--text-light);
    margin-top: 5px;
}

.contact-item a:hover {
    color: var(--secondary-color);
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer a {
    color: white;
}

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

.footer-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    padding: 5px 10px;
}

@media (max-width: 768px) {
    .footer .container {
        padding: 20px;
    }

    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
}

/* ===================================
   Scroll to Top Button
   =================================== */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    z-index: 999;
}

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

.scroll-to-top:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

/* ===================================
   Utility Classes
   =================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

/* Smooth scrolling offset for fixed navbar */
section {
    scroll-margin-top: 80px;
}