:root {
    --primary-bg-color: #1a1a1a;
    --primary-text-color: #ffffff;
    --secondary-text-color: #333333;
    --accent-color: #ffffff;
    --transition-speed: 0.3s;
    --contact-link-font: 'Playfair Display', cursive;
    --contact-link-color: #f4f4f4;
    --contact-link-hover-color: #ffffff;
    --sidebar-width: 80px;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

body {
    font-family: 'Montserrat', sans-serif;
}

body.scroll-locked {
    overflow: hidden !important;
}

.scroll-locked main {
    overflow: hidden !important;
    height: 100vh;
}

/* Animations (general purpose) */
@keyframes fadeInItem {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Vertical bar */
.vertical-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--primary-bg-color);
    z-index: 1000;
    transition: width var(--transition-speed) ease;
}

/* Sidebar toggle button */
.sidebar-toggle {
    position: absolute;
    top: 30px;
    left: 22px;
    width: 36px;
    height: 30px;
    cursor: pointer;
    z-index: 1100;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.toggle-icon {
    width: 100%;
    height: 2px;
    background-color: var(--primary-text-color);
    transition: all var(--transition-speed) ease;
}

.sidebar-toggle.active .toggle-icon:nth-child(1) {
    transform: translateY(14px) rotate(45deg);
}
.sidebar-toggle.active .toggle-icon:nth-child(2) {
    opacity: 0;
}
.sidebar-toggle.active .toggle-icon:nth-child(3) {
    transform: translateY(-14px) rotate(-45deg);
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    left: var(--sidebar-width);
    width: calc(70vw - var(--sidebar-width));
    height: 100vh;
    background-color: var(--primary-bg-color);
    color: var(--primary-text-color);
    z-index: 990;
    transform: translateX(-100%);
    transition: transform 0.8s cubic-bezier(0.77, 0, 0.175, 1);
    overflow-y: auto;
    padding: 33px 80px 40px 40px;
    display: flex;
    flex-direction: column;
}

.sidebar.active {
    transform: translateX(0);
}

/* Navigation Links */
.nav-links {
    font-size: 1.2rem;
    font-weight: 300;
    font-family: 'Montserrat', sans-serif;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 30px;
    padding: 0;
}

.nav-links li {
    margin-right: 10px;
    margin-bottom: 15px;
}

.nav-links li.nav-dot {
    font-size: 1.2rem;
    opacity: 0.5;
}

.nav-links a {
    color: var(--primary-text-color);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 300;
    position: relative;
    display: inline-block;
    transition: opacity var(--transition-speed) ease;
}

.nav-links a:hover {
    opacity: 0.7;
}

.nav-links a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-text-color);
    transition: width var(--transition-speed) ease;
}

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

/* Sidebar content */
.sidebar-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 0;
    padding-right: 20px;
    justify-content: flex-start;
}

.sidebar-text-container {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    max-width: 700px;
    height: 100%;
}

.sidebar-description {
    font-family: 'Playfair Display', serif;
    font-style: normal;
    font-size: 2.4rem;
    line-height: 1.35;
    color: var(--primary-text-color);
    text-align: left;
    margin-top: 3%;
    margin-bottom: 35px;
    flex-grow: 1;
}

.intro-text {
    margin-bottom: 15px;
}

.mission-text {
    margin-bottom: 0;
}

.sidebar-contact {
    display: flex;
    gap: 30px;
    align-items: center;
    margin-top: auto;
    flex-shrink: 0;
}

.contact-link {
    text-decoration: none;
    color: var(--contact-link-color);
    font-family: var(--contact-link-font);
    font-size: 2.2rem;
    font-weight: 400;
    font-style: italic;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    position: relative;
    opacity: 0.85;
}

.contact-link:hover {
    color: var(--contact-link-hover-color);
    opacity: 1;
}

.contact-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: -5px;
    left: 0;
    background-color: var(--contact-link-color);
    transition: width 0.3s ease;
}

.contact-link:hover::after {
    width: 100%;
}

/* Overlay */
.content-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 980;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
}

.content-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Responsive Sidebar Adjustments */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 60px;
    }

    .sidebar {
        width: calc(85vw - 60px);
        padding: 33px 30px 40px 10px;
    }

    .sidebar-description {
        font-size: 1.7rem;
        margin-bottom: 15px;
        line-height: 1.3;
    }

    .contact-link {
        font-size: 1.8rem;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: calc(75vw - var(--sidebar-width));
        padding: 33px 15px 40px 15px;
    }

    .sidebar-description {
        font-size: 1.1rem;
        margin-bottom: 10px;
        line-height: 1.25;
    }

    .nav-links a {
        font-size: 1.2rem;
    }

    .sidebar-contact {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .contact-link {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .sidebar {
        width: calc(70vw - var(--sidebar-width));
        padding: 33px 10px 40px 10px;
    }

    .sidebar-description {
        font-size: 1rem;
        margin-bottom: 8px;
        line-height: 1.2;
    }

    .contact-link {
        font-size: 1.2rem;
    }
}

/* Mission Page Styles */
.mission-page {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background-color: #ffffff;
}

.mission-container {
    max-width: 650px;
    width: 100%;
    text-align: center;
    animation: fadeInItem 0.6s ease-out forwards;
    padding: 0 10px;
}

.mission-question {
    font-family: 'Playfair Display', serif;
    font-size: 2.4rem;
    font-weight: 400;
    color: #1a1a1a;
    margin-bottom: 60px;
    line-height: 1.4;
    letter-spacing: -0.5px;
}

.mission-answer {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    font-weight: 300;
    color: #333333;
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto;
}

@media (max-width: 1024px) {
    .mission-page {
        margin-left: 60px;
        padding: 50px 20px;
    }

    .mission-container {
        padding: 0 60px;
    }

    .mission-question {
        font-size: 2.1rem;
        margin-bottom: 45px;
    }

    .mission-answer {
        font-size: 1rem;
    }
}

@media (max-width: 768px) {
    .mission-container {
        padding: 0 40px;
    }

    .mission-question {
        font-size: 1.8rem;
        margin-bottom: 35px;
    }

    .mission-answer {
        font-size: 0.95rem;
        line-height: 1.6;
    }
}

@media (max-width: 480px) {
    .mission-container {
        padding: 0 20px;
    }
}