/*
*********************************************************************************************
* File: index.css
* Author: Madhurima Rawat
* Date: 11 April, 2026
* Description: Stylesheet for study resources website, including
*              responsive design, hover effects, color schemes, and layout adjustments.
* Version: 1.0
* GitHub Repository: https://github.com/madhurimarawat/MA-English-Notes
* Issues/Bugs: For any issues or bugs, please visit the GitHub repository issues section.
* Comments: This CSS file defines styles for various components such as navbar, cards, 
*           headings, buttons, and footer. It includes customizations for hover effects,
*           color schemes, and layout adjustments to enhance user experience and visual appeal.
* Dependencies: Bootstrap 4.5.2 for responsive design.
*********************************************************************************************
*/

/* Root variables for primary colors */
:root {
    --primary-color: #28a745;
    --primary-hue: 134;
    /* Adjust hue for the primary color */
    --primary-saturation: 61%;
    /* Adjust saturation for the primary color */
    --primary-color-lighter: hsl(var(--primary-hue), var(--primary-saturation), 40%);
    --button-color: #ffc107;
    --button-hue: 45;
    /* Adjust hue for the button color */
    --button-saturation: 100%;
    /* Adjust saturation for the button color */
    --button-color-lighter: hsl(var(--button-hue), var(--button-saturation), 50%);
}

.hidden {
    display: none;
}

/* Ensure box-sizing is applied globally */
*,
*::before,
*::after {
    box-sizing: border-box;
}

#search-container {
    width: 100%;
    padding: 0;
    margin-top: 23px;
    color: black;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

#searchInput {
    margin-bottom: 5px;
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
    border: 1px solid #ccc;
    /* Subtle border */
    border-radius: 10px;
    /* Rounded corners */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    /* Card-like shadow */
    background-color: #fff;
    /* White background */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    border-collapse: collapse;
    transition: box-shadow 0.3s, border 0.3s;
    /* Smooth transition for hover effect */
}

#searchInput:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    /* Enhanced shadow on hover */
    border: 2px solid var(--primary-color);
    /* Change border color on hover */
}

#searchInput:focus {
    outline: none;
    /* Remove the default blue outline */
    border: 2px solid var(--primary-color);
    /* Optional: add a custom border */
    box-shadow: 0 0 5px var(--primary-color);
    /* Optional: add a custom shadow */
}

.header-container h1 {
    margin-bottom: 10px;
}

.line-space {
    margin-bottom: 0;
    /* Adjust or remove this to decrease space after the search box */
}

.intro-box {
    margin-top: 10px;
    /* Adjust this value to decrease the space after the search box */
}

/* Container for search suggestions */
#suggestions {
    position: absolute;
    /* Position the container absolutely relative to its parent */
    z-index: 1000;
    /* Ensure the container is above other content */
    width: 88%;
    /* Make the container as wide as its parent */
    list-style-type: none;
    /* Remove default list styling */
    padding: 0;
    /* Remove default padding */
    margin: 0;
    /* Remove default margin */
    text-align: center;
    /* Center-align the text */
}

/* Styling for each search suggestion item */
#suggestions .list-group-item {
    padding: 10px;
    /* Add padding to each item */
    cursor: pointer;
    /* Change cursor to pointer for clickable items */
    background-color: white;
    /* Set the background color to white */
    color: black;
    /* Ensure the text color is black */
    border: 1px solid #ddd;
    /* Add a light gray border to each item */
    border-bottom: none;
    /* Remove the bottom border for all but the last item */
    border-left: none;
    /* Remove the left border for a cleaner look */
    border-right: none;
    /* Remove the right border for a cleaner look */
    outline: none;
    /* Remove the outline for a cleaner look */
}

/* Add bottom border to the last list item */
#suggestions .list-group-item:last-child {
    border-bottom: 1px solid #ddd;
    /* Add the bottom border to the last item */
}

/* Active color for keyboard navigation */
#suggestions .list-group-item.active {
    background-color: #f0f0f0;
    /* Change the background color when active */
    color: black;
    /* Ensure the text color remains black */
}

/* Hover color for list items */
#suggestions .list-group-item:hover {
    background-color: #f0f0f0;
    /* Change the background color on hover */
    color: black;
    /* Ensure the text color remains black */
}

#search-line {
    margin-top: 5px;
    height: 1px;
    background-color: #ccc;
}

/* Style for the button */
#searchButton {
    border-color: white;
    /* Initial border color */
    color: white;
    /* Initial text color */
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Hover effect */
#searchButton:hover {
    background-color: var(--primary-color);
    /* Background color on hover */
    color: black;
    /* Text color on hover */
    border-color: white;
    /* Border color on hover */
}

/* Styling for tool buttons */
.tool-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    padding: 8px 16px;
    margin: 4px;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s;
}

/* Hover effect for tool buttons */
.tool-button:hover {
    /* background-color: #4a8dc9; */
    background-color: --primary-color-lighter;
    text-decoration: none;
    color: black;
}

/* Styling for tool buttons */
.tool-button_2 {
    display: inline-block;
    background-color: var(--button-color);
    color: white;
    text-align: center;
    padding: 8px 16px;
    margin: 4px;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.3s;
}

/* Hover effect for tool buttons */
.tool-button_2:hover {
    /* background-color: */
    background-color: var(--button-color);
    text-decoration: none;
    color: black;
}

/* Add margin-top to row class for larger screens */
.row+.row {
    margin-top: 24px;
    /* Adjust the value as needed */
}

/* Mobile-specific styling for screen widths below 768px */
@media (max-width: 767.98px) {

    /* Remove spacing between rows on mobile */
    .row+.row {
        margin-top: 0;
    }

    /* Add spacing below each column card */
    .col-md-4 {
        margin-bottom: 20px;
    }

    /* Remove margin-bottom from the last column card inside the last row of semester-box */
    .semester-box .row:last-of-type .col-md-4:last-child {
        margin-bottom: 0;
    }
}

/* Styling for the card component */
.card {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
    display: flex;
    flex-direction: column;
    background-color: rgba(255, 255, 240, 0.65);
    /* 👈 transparent ivory */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* Hover effect for the card component */
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* Styling for the main heading */
.heading {
    text-align: center;
    color: var(--primary-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* Background color for the navbar */
.navbar {
    background-color: var(--primary-color);
    /* Change background color */
}

/* Text color for navbar links */
.navbar-dark .navbar-nav .nav-link {
    color: #fff;
    /* Change text color */
}

/* Hover effect for navbar links */
.navbar-dark .navbar-nav .nav-link:hover {
    color: black;
    /* Change text color on hover */
}

/* Padding for the navigation links */
.navbar-nav .nav-link {
    padding: 0.5rem 1rem;
}

/* Margin for font-awesome icons in navigation links */
.navbar-nav .nav-link .fa {
    margin-right: 5px;
}

/* Dropdown menu item hover */
.navbar-dark .navbar-nav .dropdown-menu a.dropdown-item:hover {
    background-color: var(--primary-color);
    /* Set hover background color */
    color: black;
    /* Set hover text color */
}

/* Show dropdown menu on hover */
.nav-item.dropdown:hover .dropdown-menu {
    display: block;
    margin-top: 0;
    /* optional: remove gap */
}

/* Optional: smooth appearance */
.dropdown-menu {
    transition: all 0.3s ease-in-out;
}

/* Center content both vertically and horizontally using Flexbox */
.center-content {
    display: flex;
    /* Enables Flexbox layout */
    justify-content: center;
    /* Center horizontally */
    align-items: center;
    /* Center vertically */
}

/* Styling for the body element */
body {
    font-family: Arial, sans-serif;
    /* Set default font */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    /* Add soft shadow to text */
    color: #333;
    /* Default text color */
    text-align: center;
    /* Center align all text */
    position: relative;
    z-index: 0;
}

/* Background image layer */
body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

    background-image: url("https://i.fbcd.co/products/resized/resized-750-500/a-beautiful-background-for-the-worlds-book-day-3-9a9b65fb09583024371525a9ec39e30958775405607649e9e6f4932e70d22844.jpg");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    opacity: 0.15;
    /* 👈 THIS controls transparency */
    z-index: -1;
}

/* Headings styling */
h1,
h2 {
    text-align: center;
    /* Center align headings */
    color: var(--primary-color);
    /* Use theme’s primary color */
}

/* Styling for each semester box */
.semester-box {
    border: 2px solid var(--primary-color);
    /* Border with primary color */
    border-radius: 10px;
    /* Rounded corners */
    padding: 20px;
    /* Inner spacing */
    margin: 20px 0;
    /* Vertical spacing */
    background-color: transparent;
    /* White background */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    /* Soft shadow */
    transition: transform 0.2s, box-shadow 0.2s;
    /* Smooth hover transition */
    position: relative;
    /* Needed for positioning internal absolute elements */
}

/* Hover effect for semester box */
.semester-box:hover {
    transform: translateY(-5px);
    /* Slight upward lift */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    /* Darker, deeper shadow */
}

/* Styling for semester box title */
.semester-box-title {
    font-weight: bold;
    /* Make title bold */
    color: var(--primary-color);
    /* Use primary theme color */
    font-size: 1.2em;
    /* Slightly larger text */
    text-align: center;
    /* Center align */
}

/* Styling for semester box description */
.semester-box-desc {
    margin-top: 10px;
    /* Add spacing above description */
    color: #666;
    /* Use medium gray color */
}

/* Styling for the introduction box */
.intro-box {
    border: 2px solid var(--primary-color);
    /* Primary-colored border */
    border-radius: 10px;
    /* Rounded corners */
    padding: 20px;
    /* Inner spacing */
    margin: 20px 0;
    /* Vertical spacing between boxes */
    background-color: transparent;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    /* Subtle shadow for depth */
    transition: transform 0.2s, box-shadow 0.2s;
    /* Smooth transition on hover */
    text-align: center;
    /* Center-align text inside */
}

/* Hover effect for the introduction box */
.intro-box:hover {
    transform: translateY(-5px);
    /* Lift box slightly */
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    /* Stronger shadow on hover */
}

/* Styling for additional notes or small descriptions */
.note {
    font-size: 0.9em;
    /* Slightly smaller text */
    color: #555;
    /* Medium gray color for readability */
    margin-top: 10px;
    /* Space above the note */
}

/* Container to center header content */
.header-container {
    display: flex;
    /* Enable Flexbox */
    justify-content: center;
    /* Center horizontally */
    align-items: center;
    /* Center vertically */
    text-align: center;
    /* Ensure text remains centered */
}

/* Styling for the second type of tool button */
.tool-button-2 {
    display: inline-block;
    background-color: bisque;
    color: black;
    text-align: center;
    padding: 4px 10px;
    /* Reduced padding */
    margin: 2px 4px;
    /* Slightly reduced margin */
    border-radius: 4px;
    /* Increased border radius for a smoother look */
    text-decoration: none;
    font-size: 0.875rem;
    /* Slightly smaller font size */
    font-weight: 500;
    /* Added font weight for a bolder look */
    transition: background-color 0.3s, transform 0.3s;
    /* Added transform transition for better effect */
}

/* Hover effect for the second type of tool button */
.tool-button-2:hover {
    background-color: bisque;
    /* Slightly darker background on hover */
    transform: scale(1.05);
    /* Slight scale up effect on hover */
}

/* Style for the thank-you section */
.thank-you {
    text-align: center;
    /* Center align text */
    padding: 20px;
    /* Add spacing inside the section */
    background-color: #f1f1f1;
    /* Light gray background */
}

/* Style for the contact section */
.contact {
    text-align: center;
    /* Center align text */
    padding: 10px;
    /* Add spacing inside the section */
    color: white;
    /* Set text color to white */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    /* Soft shadow for text */
}

/* Style for individual contact links */
.contact-link {
    color: black;
    /* Set link color to black */
}

/* Hover effect for contact links */
.contact-link:hover {
    color: var(--primary-color);
    /* Change color on hover to primary theme color */
}

/* Style for footer section */
.footer-section {
    text-align: center;
    /* Center align text */
    padding: 10px;
    /* Add spacing inside the section */
    color: white;
    /* Set text color to white */
    background-color: var(--primary-color);
    /* Use primary theme color for background */
}