/* ---------------------------------- */
/* 1. Global Variables and Typography */
/* ---------------------------------- */
:root {
    /* Color Palette */
    --primary-color: #0047AB; /* Scientific Blue */
    --accent-color: #39FF14; /* Laser Green */
    --background-light: #F8F8F8;
    --background-dark: #1A1A2E;
    --text-color-dark: #111111;
    --text-color-light: #444444;
    --card-bg-light: #FFFFFF;
    --card-bg-dark: #2C2E4C;
    --divider-color: #CCCCCC;
    --clock-bg: rgba(255, 255, 255, 0.7);

    /* Typography */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Roboto', sans-serif;

    /* Spacing */
    --padding-base: 20px;
}

/* Base Styles (Light Mode) */
body {
    font-family: var(--font-body);
    color: var(--text-color-dark);
    background-color: var(--background-light);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

/* Dark Mode Overrides */
body.dark-mode {
    color: #EAEAEA;
    background-color: var(--background-dark);
}
body.dark-mode a {
    color: var(--accent-color);
}
body.dark-mode .profile-container img {
    box-shadow: 0 0 10px rgba(57, 255, 20, 0.5); /* Glowing green in dark mode */
}
body.dark-mode hr {
    background-color: #444444;
}
body.dark-mode .card-style {
    background-color: var(--card-bg-dark);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}
body.dark-mode .top-left-clock {
    background-color: rgba(0, 0, 0, 0.5);
    color: #CCCCCC;
}

/* Headings */
h1, h2, h3 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    transition: color 0.3s;
}
body.dark-mode h1, body.dark-mode h2, body.dark-mode h3 {
    color: var(--accent-color);
}

/* Links and Buttons */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s, text-decoration 0.3s;
}
a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

/* Utility Class for Cards/Sections */
.card-style {
    background-color: var(--card-bg-light);
    padding: var(--padding-base);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin: 30px auto;
    max-width: 800px;
    transition: background-color 0.3s, box-shadow 0.3s;
}

/* ---------------------------------- */
/* 2. Layout and Structure */
/* ---------------------------------- */

.content-body {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--padding-base);
    position: relative;
}

header {
    display: flex;
    justify-content: flex-end;
    padding: 10px var(--padding-base);
}

/* ---------------------------------- */
/* 3. Navigation */
/* ---------------------------------- */

.main-nav {
    display: flex;
    justify-content: center;
    gap: 10px;
    padding: 15px 0;
    border-top: 1px solid var(--divider-color);
    border-bottom: 1px solid var(--divider-color);
    margin-top: 20px;
    transition: border-color 0.3s;
}

.main-nav a {
    padding: 8px 15px;
    border-radius: 4px;
    color: var(--text-color-dark);
    font-weight: 500;
    transition: background-color 0.3s, color 0.3s, transform 0.2s;
}

.main-nav a:hover,
.main-nav a.active {
    background-color: var(--primary-color);
    color: var(--card-bg-light);
    transform: translateY(-2px); /* Subtle lift on hover */
    text-decoration: none;
}

.main-nav a i {
    margin-right: 5px;
}

/* Mobile Nav - Hidden by default on large screens */
.mobile-nav {
    display: none;
}

/* ---------------------------------- */
/* 4. Interactive Elements (Forms, Buttons, Toggles) */
/* ---------------------------------- */

.primary-btn, .secondary-btn, .theme-toggle {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
}

.primary-btn {
    background-color: var(--primary-color);
    color: white;
}
.primary-btn:hover {
    background-color: #003780;
    box-shadow: 0 4px 8px rgba(0, 71, 171, 0.3);
}

.secondary-btn {
    background-color: #EEEEEE;
    color: var(--text-color-dark);
    border: 1px solid #CCCCCC;
}
.secondary-btn:hover {
    background-color: #DDDDDD;
}

.theme-toggle {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1001;
    background-color: var(--card-bg-light);
    border: 1px solid var(--divider-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}
body.dark-mode .theme-toggle {
    background-color: var(--card-bg-dark);
    color: white;
    border: 1px solid var(--accent-color);
}

.contact-form {
    display: grid;
    gap: 15px;
}
.contact-form label {
    display: block;
    font-weight: bold;
}
.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #CCCCCC;
    border-radius: 4px;
    margin-top: 5px;
    box-sizing: border-box;
    transition: border-color 0.3s;
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}
body.dark-mode .contact-form input,
body.dark-mode .contact-form textarea {
    background-color: #3B3E60;
    border-color: #555555;
    color: white;
}

.styled-select {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #CCCCCC;
    background-color: var(--card-bg-light);
    color: var(--text-color-dark);
    transition: background-color 0.3s, color 0.3s;
}
body.dark-mode .styled-select {
    background-color: #3B3E60;
    border-color: #555555;
    color: white;
}

/* ---------------------------------- */
/* 5. Thoughts Box */
/* ---------------------------------- */
.thoughts-wrapper-fixed {
    position: fixed;
    top: 20%; /* Positioned lower on the side */
    right: 0;
    z-index: 1000;
}

.thought-toggle-btn {
    font-size: 1.5em;
    padding: 10px 15px;
    border-radius: 8px 0 0 8px; /* Curved border on one side */
    border: none;
    cursor: pointer;
    background-color: var(--accent-color);
    box-shadow: -4px 0 10px rgba(57, 255, 20, 0.3);
    transition: background-color 0.3s, transform 0.3s;
}
.thought-toggle-btn:hover {
    transform: translateX(-5px);
}

#thoughts-box {
    position: absolute;
    top: 0;
    right: 45px; /* Adjust based on toggle button size */
    width: 250px;
    padding: 15px;
    background-color: var(--card-bg-light);
    border-radius: 8px 0 8px 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: opacity 0.3s, transform 0.3s;
    transform-origin: right center;
    display: none; /* Controlled by JS initially */
}
body.dark-mode #thoughts-box {
    background-color: var(--card-bg-dark);
    border: 1px solid var(--accent-color);
}
#thoughts-box h3 {
    margin-top: 0;
    font-size: 1.1em;
    border-bottom: 1px solid var(--divider-color);
    padding-bottom: 5px;
    margin-bottom: 10px;
}

/* ---------------------------------- */
/* 6. Footer and Social Icons */
/* ---------------------------------- */
footer {
    padding: 20px 0;
    border-top: 1px solid var(--divider-color);
}
.social-icon {
    font-size: 1.8em;
    margin: 0 10px;
    color: var(--text-color-light);
}
.social-icon:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

/* ---------------------------------- */
/* 7. Media Queries (Responsiveness) */
/* ---------------------------------- */
@media (max-width: 768px) {
    .main-nav {
        display: none; /* Hide desktop nav */
    }
    .mobile-nav {
        display: block; /* Show mobile nav */
        padding: 10px 0;
    }
    .menu-toggle {
        display: block;
        width: 100%;
        padding: 10px;
        background-color: var(--primary-color);
        color: white;
        border: none;
        border-radius: 4px;
        font-size: 1.1em;
        cursor: pointer;
    }
    .mobile-menu-items {
        display: none;
        flex-direction: column;
        background-color: var(--card-bg-light);
        border: 1px solid var(--divider-color);
        border-top: none;
    }
    .mobile-nav.active .mobile-menu-items {
        display: flex; /* Show menu when active */
    }
    .mobile-menu-items a {
        padding: 10px 15px;
        border-bottom: 1px solid #EEE;
    }
    body.dark-mode .mobile-menu-items {
        background-color: var(--card-bg-dark);
        border-color: #444;
    }

    .top-left-clock {
        position: static;
        display: block;
        margin: 10px 0;
        text-align: center;
        background-color: transparent;
        color: var(--text-color-light);
    }
}