/* Basic Setup & Fonts */
:root {
    --primary-color: #64ffda; /* The teal/mint color */
    --light-slate: #ccd6f6;
    --slate: #8892b0;
    --dark-slate: #495670;
    --navy: #0a192f;
    --light-navy: #112240;
    --font-sans: 'Calibre', 'San Francisco', 'SF Pro Text', -apple-system, system-ui, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', 'Roboto Mono', monospace;
    --transition-speed: 0.25s;
}

body {
    font-family: var(--font-sans);
    background-color: var(--navy);
    color: var(--light-slate);
}

/* Class to prevent scrolling when menu is open */
body.no-scroll {
    overflow: hidden;
}

/* --- The Hamburger Toggle Button --- */
.menu-toggle {
    position: fixed;
    top: 25px;
    right: 25px;
    z-index: 101; /* Must be above the nav panel */
    width: 40px;
    height: 40px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    content: '';
    display: block;
    background-color: var(--primary-color);
    position: absolute;
    height: 3px;
    width: 30px;
    transition: transform var(--transition-speed) ease-in-out;
    border-radius: 2px;
}

.hamburger {
    top: 50%;
    transform: translateY(-50%);
}

.hamburger::before {
    bottom: 8px;
}

.hamburger::after {
    top: 8px;
}

/* --- Hamburger to 'X' Animation --- */
.menu-toggle.is-active .hamburger {
    transform: rotate(135deg); /* Rotate the middle bar */
}

.menu-toggle.is-active .hamburger::before,
.menu-toggle.is-active .hamburger::after {
    top: 0;
    transform: rotate(90deg); /* Rotate the top and bottom bars to form the X */
}

/* --- The Slide-in Navigation Panel --- */
.slide-in-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(75vw, 400px); /* 75% of viewport width, but max 400px */
    height: 100vh;
    background-color: var(--light-navy);
    box-shadow: -10px 0px 30px -15px rgba(2,12,27,0.7);
    z-index: 100;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    /* Hide it by default */
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--transition-speed) ease-in-out, visibility var(--transition-speed) ease-in-out;
}

.slide-in-nav.is-active {
    transform: translateX(0);
    visibility: visible;
}

/* --- Navigation Links Styling --- */
.slide-in-nav ol {
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
    text-align: center;
    counter-reset: item-counter; /* Initialize a counter */
}

.slide-in-nav li {
    margin: 20px 0;
    opacity: 0; /* Hidden for staggered animation */
    transform: translateX(20px);
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
}

/* Staggered animation for list items */
.slide-in-nav.is-active li {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-nav.is-active li:nth-child(1) { transition-delay: 0.1s; }
.slide-in-nav.is-active li:nth-child(2) { transition-delay: 0.2s; }
.slide-in-nav.is-active li:nth-child(3) { transition-delay: 0.3s; }
.slide-in-nav.is-active li:nth-child(4) { transition-delay: 0.4s; }

.slide-in-nav li a {
    color: var(--light-slate);
    text-decoration: none;
    font-size: clamp(16px, 4vw, 20px); /* Responsive font size */
    font-family: var(--font-mono);
    display: block;
    padding: 10px;
    transition: color var(--transition-speed);
}

.slide-in-nav li a:hover {
    color: var(--primary-color);
}

/* Numbered prefixes */
.slide-in-nav li a::before {
    content: '0' counter(item-counter) '.';
    counter-increment: item-counter; /* Increment the counter */
    display: block;
    margin-bottom: 5px;
    color: var(--primary-color);
    font-size: 14px;
}

/* --- Resume Button --- */
.resume-button {
    color: var(--primary-color);
    background-color: transparent;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    padding: 1rem 1.75rem;
    font-size: 14px;
    font-family: var(--font-mono);
    line-height: 1;
    text-decoration: none;
    cursor: pointer;
    margin-top: 50px;
    transition: background-color var(--transition-speed);
    
    /* Animation styling */
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
    transition-delay: 0.5s;
}

.slide-in-nav.is-active .resume-button {
    opacity: 1;
    transform: translateY(0);
}

.resume-button:hover {
    background-color: rgba(100, 255, 218, 0.1);
}