/* Custom Properties */
:root {
    --primary: #5b21b6;
    --secondary: #ec4899;
    --background: #f8fafc;
    --surface: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
    --glass: rgba(255, 255, 255, 0.85); 
    --radius: 12px;
    --transition: 0.3s ease-in-out;
    --scrollbar-bg: #e2e8f0;
    --scrollbar-thumb: var(--primary);
}

[data-theme="dark"] {
    --primary: #7c3aed;
    --secondary: #f472b6;
    --background: #0f172a;
    --surface: #1e293b;
    --text: #f8fafc;
    --muted: #9ca3af;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
    --glass: rgba(30, 41, 59, 0.9);
    --scrollbar-bg: #1e293b;
    --scrollbar-thumb: var(--primary);
}

/* Font Import */
@font-face {
    font-family: 'Poppins';
    src: url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');
    font-display: swap;
}

/* Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

body::-webkit-scrollbar {
    width: 6px;
}

body::-webkit-scrollbar-track {
    background: var(--scrollbar-bg);
}

body::-webkit-scrollbar-thumb {
    background-color: var(--scrollbar-thumb);
    border-radius: 20px;
}

/* Layout */


.container {
    max-width: 100%;
    padding: 10px 250px 10px 250px; 
    margin: 0 auto;
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}





header {
    background-color: var(--surface);
    box-shadow: var(--shadow);
    padding: 1rem 1.5rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(12px);
}

.main-content {
    max-width: 1600px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}



.sidebar-right {
    background-color: var(--glass);
    box-shadow: var(--shadow);
    border-radius: 0;
    padding: 1.5rem;
    position: fixed;
    top: 50px;
    right: 0;
    width: 320px;
    height: 100vh;
    backdrop-filter: blur(12px);
    overflow-y: auto;
    z-index: 99;
}




/* Custom scrollbar for nav and right sidebar */
nav::-webkit-scrollbar,
.sidebar-right::-webkit-scrollbar {
    width: 8px;
    /* Scrollbar width */
}

nav::-webkit-scrollbar-track,
.sidebar-right::-webkit-scrollbar-track {
    background: var(--scrollbar-bg);
    /* Track color */
    border-radius: 10px;
}

nav::-webkit-scrollbar-thumb,
.sidebar-right::-webkit-scrollbar-thumb {
    background-color: var(--primary);
    /* Thumb color */
    border-radius: 10px;
    border: 2px solid var(--scrollbar-bg);
    /* Optional for spacing */
}

/* Firefox support */
nav {
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--scrollbar-bg);
}

.sidebar-right {
    scrollbar-width: thin;
    scrollbar-color: var(--primary) var(--scrollbar-bg);
}


/* Navigation */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--text);
    padding: 0.75rem;
    border-radius: 8px;
    transition: transform var(--transition);
}

.nav-toggle:hover {
    transform: scale(1.1);
}

/* nav {
    background-color: var(--glass);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 1.5rem 1rem;
    position: sticky;
    top: 6rem;
    height: fit-content;
    backdrop-filter: blur(12px);
} */

nav {
    background-color: var(--glass);
    box-shadow: var(--shadow);
    width: 250px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    padding: 6rem 1rem 1rem;
    border-radius: 0;
    backdrop-filter: blur(12px);
    overflow-y: auto;
}


nav.open {
    left: 0;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--text);
    border-radius: 8px;
    transition: background-color var(--transition), color var(--transition), box-shadow var(--transition);
    font-size: 1rem;
}

.nav-item a:hover {
    background-color: rgba(var(--primary), 0.1);
    color: var(--primary);
    box-shadow: inset 0 0 0 1px var(--primary);
}

.nav-item a.active {
    background-color: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(var(--primary), 0.3);
}

.nav-item i {
    font-size: 1.2rem;
}

/* Components */
.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary);
}

.user-profile {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: rgba(var(--primary), 0.1);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.profile-img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: 1px solid var(--primary);
    object-fit: cover;
    transition: transform var(--transition);
}

.profile-img:hover {
    transform: scale(1.1);
}

.user-details {
    text-align: left;
    flex-grow: 1;
}

.user-details h3 {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.user-details p {
    color: var(--muted);
    font-size: 0.9rem;
}

.welcome {
    background-color: var(--glass);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(12px);
}

.streak {
    background: linear-gradient(to right, var(--warning), var(--error));
    color: white;
    padding: 0.75rem 1.25rem;
    border-radius: 999px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
    font-size: 1rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--glass);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform var(--transition), box-shadow var(--transition);
    backdrop-filter: blur(12px);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

.progress-circle {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 1rem auto;
}

.progress-circle svg {
    transform: rotate(-90deg);
}

.progress-text {
    position: absolute;
    top: 30%;
    left: 35%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
}

.courses-list,
.missions {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 0px;
}



/* --- Missions Sidebar --- */
.sidebar-right.missions {
    background: var(--surface);
    border-left: 3px solid var(--primary);
    padding: 1.5rem;
    font-family: "Segoe UI", sans-serif;
    box-shadow: -4px 0 10px rgba(0,0,0,0.05);
}

.missions-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mission-section + .mission-section {
    margin-top: 1.5rem;
}

.mission-subtitle {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.mission-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mission-list li {
    display: flex;
    justify-content: space-between;
    padding: 0.4rem 0;
    border-bottom: 1px dashed var(--muted);
    font-weight: 500;
}

.mission-label { color: var(--text); }
.mission-count { color: var(--primary); font-weight: 600; }
.mission-count.overdue { color: var(--error); }

.mission-tips {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 0.95rem;
    color: var(--muted);
}

.mission-tips li {
    margin-bottom: 0.5rem;
}





.course-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--glass);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 10px;
    backdrop-filter: blur(12px);
}

.progress-bar {
    background-color: rgba(var(--primary), 0.15);
    height: 10px;
    border-radius: 999px;
    overflow: hidden;
    width: 100px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: width var(--transition);
}

.action-btn {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition);
    min-width: 100px;
}

.action-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

.action-btn:hover::after {
    width: 200px;
    height: 200px;
}

.action-btn:hover {
    transform: scale(1.05);
}

.action-btn.secondary {
    background: none;
    border: 1px solid var(--primary);
    color: var(--primary);
}

.mission-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    border-bottom: 1px solid rgba(var(--muted), 0.2);
}

.badge {
    background-color: var(--success);
    color: white;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 10px;
}

.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    z-index: 98;
}

.overlay.show {
    display: block;
}

/* Responsive Design */
@media (min-width: 1200px) {
    .main-content {
        padding-top: 6rem;
    }
}

@media (max-width: 1200px) {
    .container {
        grid-template-columns: 1fr;
        padding-top: 6rem;
    }

    .nav-toggle {
        display: block;
    }

    nav {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        width: 240px;
        z-index: 99;
        transition: left var(--transition);
        padding-top: 6rem;
        overflow-y: auto;
    }

    nav::-webkit-scrollbar {
        display: none;
    }

    .sidebar-right {
        order: 2;
        position: relative;
        top: 0;
    }

    .main-content {
        order: 1;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .welcome {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .course-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .progress-bar {
        width: 100px;
    }

    .action-btn {
        width: 100%;
        text-align: center;
    }

    .progress-circle {
        width: 140px;
        height: 140px;
    }

    .progress-text {
        top: 35%;
        left: 40%;
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .welcome {
        margin-top: 65px;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .action-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .progress-circle {
        width: 120px;
        height: 120px;
    }

    .progress-text {
        top: 45%;
        left: 45%;
        font-size: 1.4rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}