/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700&family=Open+Sans:wght@400;600&display=swap');

/* CSS Custom Properties */
:root {
    --color-primary: #003366; /* Deep Sapphire Blue */
    --color-accent: #007bff; /* Brighter Blue */
    --color-text: #333; /* Dark Grey */
    --color-bg: #f8faff; /* Off-white, very light blue tint */
    --color-secondary-bg: #e9edf2; /* Light grey for cards */
    --color-light-grey: #ccc;
    --color-dark-grey: #666;
    --color-white: #fff;

    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;

    --max-width: 1200px;
    --header-height: 70px;
    --section-padding: 80px 0;

    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --transition-speed: 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden; /* Prevent horizontal scroll due to animations */
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; margin-bottom: 2.5rem; text-align: center;}
h3 { font-size: 1.6rem; }
p { margin-bottom: 1rem; }

/* Utility Classes */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.content-section {
    padding: var(--section-padding);
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-speed);
    cursor: pointer;
    border: 2px solid transparent;
}

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

.btn-primary:hover {
    background-color: #002244;
    border-color: #002244;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.btn-secondary-outline {
    background-color: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-secondary-outline:hover {
    background-color: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Scroll Reveal Animation */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

[data-reveal].visible {
    opacity: 1;
    transform: translateY(0);
}

/* Specific exclusion for modal */
#portal-modal, #portal-modal * {
    opacity: 1 !important;
    transform: none !important;
}

/* Navigation */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(5px);
    padding: 10px 0;
    z-index: 1000;
    transition: all var(--transition-speed);
}

#main-nav.scrolled {
    background-color: var(--color-white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

#main-nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: var(--header-height);
}

#main-nav .logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--color-primary);
    text-decoration: none;
}

#main-nav .nav-links {
    list-style: none;
    display: flex;
    align-items: center;
}

#main-nav .nav-links li {
    margin-left: 30px;
}

#main-nav .nav-links a {
    color: var(--color-text);
    font-weight: 600;
    font-size: 1rem;
    position: relative;
    padding-bottom: 5px;
}

#main-nav .nav-links a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-speed);
}

#main-nav .nav-links a:hover::after {
    width: 100%;
}

#hamburger-menu {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 20px;
    padding: 0;
    z-index: 1001;
}

#hamburger-menu span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-speed);
}

/* Hero Section */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(rgba(0, 51, 102, 0.8), rgba(0, 51, 102, 0.8)), url('https://via.placeholder.com/1920x1080/003366/FFFFFF?text=Medical+Logistics+Hero') center/cover no-repeat;
    color: var(--color-white);
    padding-top: var(--header-height); /* Offset for fixed nav */
}

#hero .hero-content {
    max-width: 900px;
}

#hero h1 {
    color: var(--color-white);
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

#hero .subtitle {
    font-size: 1.3rem;
    font-weight: 400;
    line-height: 1.6;
    margin-bottom: 2.5rem;
    color: rgba(255, 255, 255, 0.9);
}

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

/* Stats Strip */
#stats {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 40px 0;
    text-align: center;
}

#stats .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
    gap: 30px;
}

.stat-item {
    flex: 1;
    min-width: 200px;
    max-width: 280px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2.8rem; /* Adjusted from 2.5rem to 2.8rem for better visual impact */
    font-weight: 700;
    line-height: 1;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 0.85rem;
    text-transform: uppercase;
    opacity: 0.8;
}

/* About Section */
#about p {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.8;
}

/* Services Section */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    text-align: center;
    border: 1px solid var(--color-secondary-bg);
}

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

.service-card h3 {
    color: var(--color-accent);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.service-card p {
    font-size: 1rem;
    color: var(--color-dark-grey);
}

/* Clients Section */
#clients {
    padding: 60px 0;
    background-color: var(--color-secondary-bg);
    text-align: center;
}

#clients h2 {
    color: var(--color-primary);
    margin-bottom: 40px;
}

.client-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 3rem;
}

.client-logo {
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    font-size: 1.1rem;
    font-family: var(--font-heading);
    white-space: nowrap;
}

/* Work / Case Studies Section */
.case-study-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-study-card {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border: 1px solid var(--color-secondary-bg);
    display: flex;
    flex-direction: column;
}

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

.tag-pill {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: 6px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 15px;
}

.case-study-card h3 {
    font-size: 1.4rem;
    margin-bottom: 10px;
    flex-grow: 1; /* Ensures titles take available space */
}

.case-study-card p {
    font-size: 0.95rem;
    color: var(--color-dark-grey);
    margin-bottom: 0;
}

/* Testimonials Section */
#testimonials {
    background-color: var(--color-secondary-bg);
}

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

.testimonial-card {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-left: 4px solid var(--color-accent);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.testimonial-card .quote {
    font-style: italic;
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: 15px;
}

.testimonial-card .author {
    font-weight: 600;
    color: var(--color-primary);
    text-align: right;
    margin-top: auto;
}

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.team-card {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    text-align: center;
    border: 1px solid var(--color-secondary-bg);
}

.team-card .avatar {
    width: 70px; /* Adjusted from 64px to 70px for slight increase */
    height: 70px;
    border-radius: 50%;
    background-color: var(--color-accent);
    color: var(--color-white);
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    font-size: 1.8rem;
    margin: 0 auto 1rem;
}

.team-card h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--color-primary);
}

.team-card .title {
    font-size: 0.95rem;
    color: var(--color-dark-grey);
    margin-bottom: 15px;
}

.team-card .bio {
    font-size: 0.875rem;
    color: var(--color-dark-grey);
    line-height: 1.7;
    margin-bottom: 0;
}

/* Insights Section */
.insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.insight-card {
    background-color: var(--color-white);
    padding: 30px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border: 1px solid var(--color-secondary-bg);
    display: flex;
    flex-direction: column;
}

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

.insight-card .insight-date {
    font-size: 0.85rem;
    color: var(--color-dark-grey);
    margin-bottom: 10px;
    display: block;
}

.insight-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    flex-grow: 1;
}

.insight-card p {
    font-size: 0.95rem;
    color: var(--color-dark-grey);
    margin-bottom: 15px;
}

.insight-card .read-more {
    color: var(--color-accent);
    font-weight: 600;
    margin-top: auto;
    display: inline-block;
}

.insight-card .read-more:hover {
    text-decoration: underline;
}

/* Contact Section */
#contact .email-link {
    text-align: center;
    font-size: 1.1rem;
    margin-top: 1.5rem;
    margin-bottom: 2.5rem;
}

#contact-form {
    max-width: 600px;
    margin: 0 auto;
    padding: 30px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border: 1px solid var(--color-secondary-bg);
}

.form-group {
    margin-bottom: 20px;
}

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-light-grey);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

#contact-form .btn-primary {
    width: auto;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.form-success {
    text-align: center;
    color: var(--color-primary);
    font-size: 1.2rem;
    font-weight: 600;
    padding: 30px;
}

/* Footer */
footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 40px 0 20px;
    text-align: center;
    font-size: 0.9rem;
}

footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

footer .footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

footer .footer-links a, footer .footer-links button {
    color: rgba(255, 255, 255, 0.8);
    font-weight: 400;
    padding: 5px 10px;
    border-radius: var(--border-radius-sm);
}

footer .footer-links a:hover, footer .footer-links button:hover {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
}

footer .btn-secondary-outline {
    border-color: rgba(255, 255, 255, 0.5);
    color: rgba(255, 255, 255, 0.8);
}

footer .btn-secondary-outline:hover {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    border-color: var(--color-white);
}

footer p a {
    color: rgba(255, 255, 255, 0.8);
}

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

/* Client Portal Modal */
#portal-modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    display: none; /* Hidden by default */
    justify-content: center;
    align-items: center;
    z-index: 2000;
    padding: 20px;
}

#portal-modal.open {
    display: flex; /* Shown when 'open' class is added */
}

.modal-box {
    background: var(--color-white);
    padding: 40px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    position: relative;
    max-width: 450px;
    width: 100%;
    z-index: 2001; /* Ensure it's above the backdrop */
}

.modal-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--color-primary);
    font-size: 1.8rem;
}

#modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    cursor: pointer;
    color: var(--color-dark-grey);
    transition: color var(--transition-speed);
}

#modal-close:hover {
    color: var(--color-primary);
}

#portal-form .form-group {
    margin-bottom: 15px;
}

#portal-form .btn-primary {
    width: 100%;
    margin-top: 20px;
}

.login-error {
    color: red;
    font-size: 0.875rem;
    margin-top: 15px;
    text-align: center;
}

/* Media Queries */
/* Mobile (up to 600px) */
@media (max-width: 600px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; margin-bottom: 2rem; }
    h3 { font-size: 1.4rem; }

    #main-nav .container {
        flex-wrap: wrap;
        padding: 10px 20px;
        height: auto;
    }
    #main-nav .logo {
        flex-grow: 1;
        font-size: 1.5rem;
    }
    #hamburger-menu {
        display: flex;
        order: 2;
    }
    #main-nav .nav-links {
        flex-direction: column;
        width: 100%;
        display: none; /* Hidden by default */
        text-align: center;
        padding: 20px 0;
        background-color: var(--color-white); /* Ensures links are visible when open */
        margin-top: 10px; /* Space from logo/hamburger */
        box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    }
    #main-nav.nav-open .nav-links {
        display: flex; /* Show when nav-open class is active */
    }
    #main-nav .nav-links li {
        margin: 10px 0;
    }
    #main-nav .nav-links li:last-child {
        margin-top: 20px; /* Space for the portal button */
    }
    #main-nav .nav-links a::after {
        width: 0; /* Hide underline on mobile nav links */
    }

    #hero h1 {
        font-size: 2.5rem;
    }
    #hero .subtitle {
        font-size: 1rem;
    }
    .hero-ctas {
        flex-direction: column;
        gap: 15px;
    }
    .btn {
        width: 100%;
    }

    #stats .container {
        flex-direction: column;
        gap: 20px;
    }
    .stat-number {
        font-size: 2.2rem;
    }
    .stat-label {
        font-size: 0.8rem;
    }

    .content-section {
        padding: 40px 0;
    }

    .service-grid, .case-study-grid, .testimonial-grid, .team-grid, .insights-grid {
        grid-template-columns: 1fr;
    }

    .client-logos {
        flex-direction: column;
        gap: 2rem;
    }

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

/* Tablet (601px to 960px) */
@media (min-width: 601px) and (max-width: 960px) {
    h1 { font-size: 3rem; }
    h2 { font-size: 2rem; }

    #main-nav .nav-links li {
        margin-left: 20px;
    }

    #hero h1 {
        font-size: 3rem;
    }
    #hero .subtitle {
        font-size: 1.15rem;
    }

    #stats .container {
        gap: 20px;
    }
    .stat-number {
        font-size: 2.5rem;
    }
    .stat-label {
        font-size: 0.8rem;
    }

    .service-grid, .case-study-grid, .testimonial-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .client-logos {
        gap: 2.5rem;
    }
}