/* =========================
   CSS Variables
   ========================= */
:root {
    --main-bg: #fff;
    --main-text: #222;
    --nav-bg: #ff6200;
    --nav-text: white;
    --nav-shadow: 0 0 15px 5px rgb(70, 70, 70);
    --accent: #FF914C;
    --accent-hover: #ffb07b;
    --card-bg: #fff;
    --card-radius: 12px;
    --card-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.10);
    --feature-bg: #fff;
    --feature-box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
    --feature-radius: 12px;
    --feature-border: #1d4ed8;
    --feature-outline: 2px solid #1d4ed8;
    --feature-bg-alt: #f3f4f6;
    --testimonial-bg: #f9f9f9;
    --testimonial-border: #1d4ed8;
    --btn-border: #105cd4;
    --btn-bg: transparent;
    --btn-text: #105cd4;
    --btn-radius: 10px;
    --cta-bg: #1d4ed8;
    --cta-text: #fff;
    --cta-bg-hover: #1e40af;
    --footer-bg: #111827;
    --footer-text: #cbd5e1;
    --bottom-info-icon: rgb(39, 39, 39);
    --bottom-info-icon-hover: rgb(98, 98, 98);
    --card-border: transparent;
}

/* =========================
   Dark Mode Variables
   ========================= */
:root {
    --main-bg-dark: #181824;
    --main-text-dark: #f3f3f3;
    --nav-bg-dark: #1a1333;
    --card-bg-dark: #23243a;
    --card-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.25);
    --card-shadow-hover-dark: 0 8px 24px rgba(0, 0, 0, 0.35);
    --feature-bg-dark: #23243a;
    --feature-box-shadow-dark: 0 4px 16px rgba(0, 0, 0, 0.18);
    --feature-bg-alt-dark: #23243a;
    --testimonial-bg-dark: #23243a;
    --testimonial-border-dark: #FF914C;
    --btn-border-dark: #FF914C;
    --btn-bg-dark: transparent;
    --btn-text-dark: #FF914C;
    --cta-bg-dark: #FF914C;
    --cta-text-dark: #23243a;
    --cta-bg-hover-dark: #ffb07b;
    --footer-bg-dark: #23243a;
    --footer-text-dark: #f3f3f3;
    --bottom-info-icon-dark: #f3f3f3;
    --bottom-info-icon-hover-dark: #FF914C;
    --card-border-dark: transparent;
}

/* =========================
   Base Styles
   ========================= */
* {
    margin: 0;
    padding: 0;
    outline: none;
    box-sizing: border-box;
    font-family: "Inter", sans-serif;
}

body {
    width: 100%;
    padding-top: 10vh;
    position: relative;
    background: var(--main-bg);
    color: var(--main-text);
    transition: background 0.2s, color 0.2s;
}

nav .dropdown-content a:hover {
    color: darkblue !important;
    border-radius: 10px;
}

/* =========================
   Navigation Bar
   ========================= */
nav {
    width: 100%;
    height: 10vh;
    background-color: var(--nav-bg);
    position: fixed;
    top: 0;
    z-index: 99999;
    display: flex;
}

.logo {
    width: 55%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding-left: 5%;
    color: var(--nav-text);
    flex-direction: row;
}

.links {
    width: 45%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: row;
}

.links a {
    padding: 10px;
    color: var(--nav-text);
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s;
}

.links a:hover {
    color: var(--nav-accent);
}

.links ul {
    margin-bottom: 0;
}

.links ul .active_link {
    color: #181824 !important;
}

body.dark-mode .links ul .active_link {
    color: #181824 !important;
}


/* =========================
   Main Container & Cards
   ========================= */
.container {
    width: 100%;
    height: fit-content;
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 310px));
    justify-content: center;
}

.card {
    border-color: var(--card-border) !important;
    background: var(--card-bg);
    border-radius: var(--card-radius);
    box-shadow: var(--card-shadow);
    color: var(--main-text);
    transition: background 0.2s, color 0.2s, border 0.2s;
}

.back-btn {
    position: fixed;
    top: 100px;
    display: inline-block;
    text-decoration: none;
    margin: 10px;
    padding: 5px 10px;
    border: 2px solid var(--btn-border);
    border-radius: var(--btn-radius);
    background-color: var(--btn-bg);
    color: var(--btn-text);
    transition: background 0.2s, color 0.2s, border 0.2s;
}

.back-btn:hover {
    background-color: var(--btn-border);
    color: #fff;
    border-color: var(--btn-border);
}

.block-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    background: var(--modal-overlay-bg);
    /* optional to dim background */
    z-index: 99;
}

.block::-webkit-scrollbar {
    display: none;
}

.block {
    position: relative;
    background: whitesmoke;
    padding: 100px;
    outline: 2px solid var(--accent);
    border-radius: 15px;
    box-shadow: 1px solid grey;
    min-width: 900px;
    min-height: 50vh;
    overflow-y: auto;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
body.dark-mode .block{
    outline-color: var(--btn-border);
}
body.dark-mode .block h2 {
    margin-top: 0;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
    color: black !important;
}

.block ul {
    padding-left: 20px;
}

.block section {
    margin-bottom: 20px;
}

body.dark-mode .block p {
    color: grey;
}

#comingbtn {
    text-decoration: none;
    margin: 10px;
    padding: 5px 20px;
    border: 2px solid var(--btn-border-dark);
    background-color: var(--btn-bg-dark);
    color: var(--btn-text-dark);
    border-radius: var(--btn-radius);
    transition: background 0.2s, color 0.2s, border 0.2s;
}

#comingbtn:hover {
    background-color: var(--btn-border-dark);
    color: #fff;
    border-color: var(--btn-border-dark);
}

body.dark-mode #comingbtn {
    border: 2px solid var(--btn-border);
    background-color: var(--btn-bg);
    color: var(--btn-text);
}

body.dark-mode #comingbtn:hover {
    background-color: var(--btn-border);
    color: #fff;
    border-color: var(--btn-border);
}

/* =========================
   Blog Modal
   ========================= */
.blog-content {
    position: fixed;
    top: 11vh;
    left: 35px;
    width: 95%;
    height: 85vh;
    border-radius: 15px;
    border: 1px solid grey;
    background-color: var(--card-bg);
    overflow-y: scroll;
    overflow-x: hidden;
    z-index: 100000;
    outline: none;
    display: none;
    padding: 20px;
    color: var(--main-text);
    transition: background 0.2s, color 0.2s;
}

.blog-content .fa-xmark {
    position: absolute;
    top: 25px;
    right: 25px;
    font-size: 25px;
    color: var(--nav-text);
    cursor: pointer;
}

.blog-content h1 {
    text-align: center;
    margin-bottom: 30px;
    font-weight: 200;
}

.blog-content::-webkit-scrollbar {
    display: none;
}

/* =========================
   Hero Section
   ========================= */
.course-name {
    padding: 50px 0;
    color: var(--nav-text);
    border-radius: 10px;
    background-image: linear-gradient(#442670ce, #442670ce), url(../../IMG/background.png);
}

/* =========================
   Dark Mode Styles
   ========================= */
body.dark-mode {
    background: var(--main-bg-dark);
    color: var(--main-text-dark);
}

body.dark-mode .logo {
    color: var(--nav-text);
}

body.dark-mode .links a {
    color: var(--nav-text);
}

body.dark-mode .links a:hover {
    color: var(--nav-accent-dark);
}

body.dark-mode .card {
    background: var(--card-bg-dark);
    color: var(--main-text-dark);
    border-color: var(--card-border-dark) !important;
    box-shadow: var(--card-shadow-dark);
}

body.dark-mode .blog-content {
    background-color: var(--card-bg-dark);
    color: var(--main-text-dark);
    border-color: var(--card-border-dark);
}

body.dark-mode .blog-content .fa-xmark {
    color: var(--nav-text-dark);
}

body.dark-mode .course-name {
    color: var(--nav-text-dark);
    background-image: linear-gradient(#442670ce, #442670ce), url(../../IMG/background.png);
}

body.dark-mode .back-btn {
    border: 2px solid var(--btn-border-dark);
    background-color: var(--btn-bg-dark);
    color: var(--btn-text-dark);
}

body.dark-mode .back-btn:hover {
    background-color: var(--btn-border-dark);
    color: #fff;
    border-color: var(--btn-border-dark);
}