* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1E5661;
    --primary-light: #2a7788;
    --accent: #4a9fb0;
    --text-dark: #1a1a1a;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

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

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo img {
    height: 70px;  /* Adjust this value to make it smaller/bigger */
    width: auto;
    transition: opacity 0.3s;
}

.logo:hover img {
    opacity: 0.8;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu > li > a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu > li > a:hover {
    color: var(--accent);
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
}

.arrow {
    font-size: 0.7rem;
    transition: transform 0.3s;
}

.dropdown:hover .arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    list-style: none;
    padding: 0.5rem 0;
    min-width: 200px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1001;
    pointer-events: none;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

/* Force close dropdown when not hovering */
.dropdown-menu.force-close {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.8rem 1.5rem;
    color: var(--text-dark);
    text-decoration: none;
    transition: background 0.3s, color 0.3s;
}

.dropdown-menu a:hover {
    background: var(--bg-light);
    color: var(--accent);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary);
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, #143e46 100%);
    color: var(--white);
    text-align: center;
    padding: 120px 20px 50px;
}

.hero-content h1 {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: clamp(1rem, 2vw, 1.3rem);
    margin-bottom: 2rem;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

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

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

/* Sections */
section {
    padding: 100px 20px;
}

#rna-science {
    background: var(--white);
}

#pipeline {
    background: var(--bg-light);
}

#platform {
    background: var(--white);
}

#consultancy {
    background: var(--bg-light);
}

#publications {
    background: var(--white);
}

#contact {
    background: var(--bg-light);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* RNA Science */
.rna-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.rna-visual svg {
    max-width: 100%;
    height: auto;
}

.rna-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 15px;
    border-left: 4px solid var(--accent);
}

.info-card h3 {
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

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

.stat-highlight {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

/* Pipeline */
.pipeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.pipeline-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 5px 25px rgba(30, 86, 97, 0.1);
    transition: transform 0.3s;
}

.pipeline-card:hover {
    transform: translateY(-10px);
}

.pipeline-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 2rem;
    text-align: center;
    color: var(--white);
}

.pipeline-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.pipeline-header h3 {
    font-size: 1.6rem;
    margin-bottom: 0.5rem;
}

.pipeline-content {
    padding: 2rem;
}

.pipeline-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
}

.pipeline-stat {
    background: var(--bg-light);
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
}

.stat-num {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.3rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Platform */
.platform-visual {
    text-align: center;
    margin: 3rem auto 4rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e8f4f8 100%);
    padding: 3rem 2rem;
    border-radius: 30px;
    box-shadow: 0 10px 40px rgba(30, 86, 97, 0.08);
}

.platform-visual svg {
    max-width: 100%;
    height: auto;
}

.platform-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.step-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: 0 5px 25px rgba(30, 86, 97, 0.1);
    transition: all 0.3s;
    position: relative;
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 15px 40px rgba(30, 86, 97, 0.15);
}

.step-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary);
    opacity: 0.08;
}

.step-icon {
    font-size: 3rem;
    margin: 0 0 2rem 0;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 50%;
    box-shadow: 0 10px 30px rgba(30, 86, 97, 0.3);
}

.step-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-card p {
    color: var(--text-light);
    text-align: center;
    line-height: 1.8;
    font-size: 1.05rem;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 5px 25px rgba(30, 86, 97, 0.1);
    transition: transform 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.service-card ul {
    list-style: none;
}

.service-card li {
    color: var(--text-light);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.service-card li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

/* Publications */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.tool-card {
    background: var(--bg-light);
    border-radius: 20px;
    overflow: hidden;
    transition: transform 0.3s;
}

.tool-card:hover {
    transform: translateY(-10px);
}

.tool-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    padding: 2rem;
    text-align: center;
    color: var(--white);
}

.tool-header h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.tool-content {
    padding: 2rem;
    background: var(--white);
}

.tool-stats {
    display: flex;
    justify-content: space-around;
    margin-top: 1rem;
}

.tool-stat span {
    display: block;
    text-align: center;
}

.tool-stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}

.tool-stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Contact */
.contact-wrapper {
    max-width: 800px;
    margin: 3rem auto 0;
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 5px 25px rgba(30, 86, 97, 0.1);
}

.contact-form {
    display: grid;
    gap: 1.5rem;
}
.form-messages {
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    display: none;
    font-weight: 500;
}

.form-messages.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-messages.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}
.input-field input,
.input-field select,
.input-field textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid var(--bg-light);
    border-radius: 12px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s;
    background: var(--bg-light);
}

.input-field input:focus,
.input-field select:focus,
.input-field textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(74, 159, 176, 0.1);
}

.input-field textarea {
    min-height: 120px;
    resize: vertical;
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    padding: 16px 40px;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 5px 20px rgba(30, 86, 97, 0.3);
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(30, 86, 97, 0.4);
}

.contact-info {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--bg-light);
    text-align: center;
    color: var(--text-light);
    font-size: 0.95rem;
}

.contact-info a {
    color: var(--accent);
    text-decoration: none;
}

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

/* Footer */
footer {
    background: var(--primary);
    color: var(--white);
    padding: 2rem 20px;
    text-align: center;
}

/* Mobile */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.1);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu li {
        padding: 1rem 0;
    }

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

    .hamburger {
        display: flex;
    }

    /* Mobile dropdown */
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: var(--bg-light);
        margin-top: 0.5rem;
        display: none;
        pointer-events: auto;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

    .dropdown-toggle {
        justify-content: center;
    }

    .rna-grid,
    .pipeline-grid {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        padding: 2rem;
    }
}