:root {
    --primary-color: #2a9d8f;
    --secondary-color: #e9c46a;
    --text-color: #333;
    --bg-color: #f8f9fa;
    --card-bg: #fff;
    --sidebar-bg: #fff;
    --border-color: #e0e0e0;
    --code-bg: #f5f5f5;
    --code-color: #2a9d8f;
    --btn-hover: #218377;
    --answer-bg: #f0f7f6;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --header-bg: linear-gradient(135deg, #2a9d8f 0%, #3a7d71 100%);
    --header-text: #fff;
}

[data-theme="dark"] {
    --primary-color: #2a9d8f;
    --secondary-color: #e9c46a;
    --text-color: #e0e0e0;
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --sidebar-bg: #1a1a1a;
    --border-color: #333;
    --code-bg: #2d2d2d;
    --code-color: #4ecdc4;
    --btn-hover: #4ecdc4;
    --answer-bg: #1a2928;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    --header-bg: linear-gradient(135deg, #1a6b62 0%, #0f4942 100%);
    --header-text: #fff;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s;
}

/* Update the progress bar CSS */
.progress-bar {
    height: 6px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
    width: 0%;
    /* Start at 0% width */
    background-color: var(--secondary-color);
    /* Set the actual bar color */
    transition: width 0.3s ease;
}

/* Remove the ::before pseudo-element since we're setting width directly */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar Styles */
.sidebar {
    width: clamp(250px, 25%, 330px);
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    color: var(--primary-color);
    font-weight: 600;
}

.filter-section {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.filter-section h3 {
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 600;
}

.filter-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.filter-option {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 30px;
    cursor: pointer;
    font-size: 14px;
}

.filter-option input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 3px;
}

.filter-option:hover input~.checkmark {
    background-color: var(--code-bg);
}

.filter-option input:checked~.checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.filter-option input:checked~.checkmark:after {
    display: block;
}

.filter-option .checkmark:after {
    left: 6px;
    top: 2px;
    width: 4px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.question-list-container {
    padding: 20px;
    flex-grow: 1;
    overflow-y: auto;
}

.question-list-container h3 {
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 600;
}

.question-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: calc(100vh - 300px);
    overflow-y: auto;
}

.question-item {
    padding: 12px 15px;
    border-radius: 6px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 14px;
}

.question-item:hover {
    background-color: var(--code-bg);
    transform: translateY(-2px);
}

.question-item.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

/* Main Content Styles */
.main-content {
    flex-grow: 1;
    margin-left: 300px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-header {
    background: var(--header-bg);
    color: var(--header-text);
    padding: 30px;
    text-align: center;
}

.main-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 10px;
}

.subtitle {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 20px;
}

.progress-container {
    max-width: 500px;
    margin: 0 auto;
}

.progress-bar {
    height: 6px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-bar::before {
    content: '';
    display: block;
    height: 100%;
    width: 0%;
    background-color: var(--secondary-color);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 14px;
    text-align: right;
    color: rgba(255, 255, 255, 0.9);
}

.question-container {
    flex-grow: 1;
    padding: 30px;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.question-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    box-shadow: var(--shadow);
    padding: 30px;
    margin-bottom: 25px;
    min-height: 300px;
    transition: all 0.3s;
}

.question-number {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    font-size: 14px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 15px;
}

.question-title {
    font-size: 22px;
    margin-bottom: 25px;
    font-weight: 600;
    line-height: 1.4;
}

.code-block {
    background-color: var(--code-bg);
    padding: 20px;
    border-radius: 8px;
    margin: 20px 0;
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    border-left: 4px solid var(--primary-color);
}

.code-block code {
    color: var(--code-color);
    font-size: 15px;
    line-height: 1.5;
}

.sql-keyword {
    color: var(--primary-color);
    font-weight: bold;
}

.answer-container {
    background-color: var(--answer-bg);
    border-left: 4px solid var(--primary-color);
    padding: 20px;
    margin-top: 25px;
    border-radius: 8px;
    display: none;
    transition: all 0.3s;
}

.answer-container h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.answer-container.visible {
    display: block;
    animation: fadeIn 0.5s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.controls {
    display: flex;
    justify-content: space-between;
    gap: 15px;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: 6px;
    background-color: var(--card-bg);
    color: var(--text-color);
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.btn:hover {
    background-color: var(--code-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.btn.primary {
    background-color: var(--primary-color);
    color: white;
    border: 1px solid var(--primary-color);
}

.btn.primary:hover {
    background-color: var(--btn-hover);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Import Work Sans font */
@import url('https://fonts.googleapis.com/css2?family=Work+Sans&display=swap');

/* Footer styles */
footer {
    text-align: center;
    padding: 20px;
    border-top: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.7;
}

/* Gowthamraj font */
.gowthamraj {
    font-family: 'Work Sans', sans-serif;
    font-weight: 600;
    /* optional: for bolder text */
}


/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
}

.switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 20px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
    border-radius: 20px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked+.slider {
    background-color: var(--primary-color);
}

input:checked+.slider:before {
    transform: translateX(20px);
}

.fa-sun,
.fa-moon {
    font-size: 14px;
    color: var(--text-color);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .main-content {
        margin-left: 0;
    }

    .question-list {
        max-height: 300px;
    }
}

@media (max-width: 768px) {
    .controls {
        flex-wrap: wrap;
    }

    .btn {
        flex: 1;
        min-width: 120px;
        justify-content: center;
    }

    .question-card {
        padding: 20px;
    }

    .main-header {
        padding: 20px;
    }

    .question-container {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .main-header h1 {
        font-size: 24px;
    }

    .question-title {
        font-size: 18px;
    }

    .btn {
        padding: 10px 15px;
        font-size: 14px;
    }

    .question-number {
        font-size: 12px;
    }
}

/* For WebKit browsers (Chrome, Edge, Safari) */
::-webkit-scrollbar {
  width: 6px; /* Adjust width here */
}

::-webkit-scrollbar-track {
  background: #f1f1f1; /* Optional: Track color */
}

::-webkit-scrollbar-thumb {
  background: #888; /* Scroll thumb color */
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: #555;
}

/* For Firefox */
* {
  scrollbar-width: thin;
  scrollbar-color: #888 #f1f1f1; /* thumb color track color */
}