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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
            background-color: #050505;
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }

        .container {
            /* Glassmorphism properties */
            background-color: rgba(12, 16, 23, 0.6);
            border: 1px solid rgba(255, 255, 255, 0.1);
            -webkit-backdrop-filter: blur(15px);
            backdrop-filter: blur(15px);
            color: #fff;

            /* Original layout properties */
            border-radius: 20px;
            box-shadow: 0 20px 100px rgba(0, 0, 0, 0.5);
            max-width: 850px;
            width: 100%;
            padding: 25px 40px;
            animation: slideIn 0.5s ease-out;
            position: relative; /* Added for pseudo-elements */
            transition: all ease 0.3s;
        }

        .container:hover {
            box-shadow: 0px 0px 20px 1px #ffbb763f;
            border: 1px solid rgba(255, 255, 255, 0.454);
        }

        .container::before,
        .container::after {
            content: "";
            background-color: rgba(253, 251, 211, 0.15);
            position: absolute;
            z-index: -1; /* Ensure they render behind the container background to be blurred */
        }

        .container::before {
            border-radius: 50%;
            width: 6rem;
            height: 6rem;
            top: 30%;
            right: 7%;
        }

        .container::after {
            height: 3rem;
            width: 3rem;
            top: 8%;
            right: 5%;
            border: 1px solid;
            border-radius: 50%;
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .header h1 {
            color: #fdfbd3;
            font-size: 2.5em;
            margin-bottom: 10px;
            text-shadow: 0 0 10px rgba(253, 251, 211, 0.4);
        }

        .header p {
            color: #b3c2d1;
            font-size: 1.1em;
        }

        .start-screen {
            text-align: center;
        }

        .start-screen h2 {
            color: #fff;
            margin-bottom: 20px;
            font-size: 1.8em;
        }

        .quiz-mode-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            margin-bottom: 30px;
            flex-wrap: wrap;
        }

        .mode-btn {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            border: none;
            padding: 15px 30px;
            font-size: 1.1em;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
            min-width: 180px;
        }

        .mode-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
        }

        .mode-btn.shuffle {
            background: linear-gradient(135deg, #3768be 0%, #0e2a5f 100%);
            box-shadow: 0 4px 15px rgba(42, 82, 152, 0.4);
        }

        .mode-btn.shuffle:hover {
            box-shadow: 0 6px 20px rgba(56, 102, 181, 0.6);
        }

        .start-screen p {
            color: #b3c2d1;
            margin-bottom: 30px;
            font-size: 1.1em;
            line-height: 1.6;
        }

        .quiz-info {
            background: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 10px;
            margin-bottom: 30px;
            text-align: left;
        }

        .quiz-info p {
            margin: 10px 0;
            color: #e0e0e0;
        }

        .quiz-info strong {
            color: #fdfbd3;
        }

        button {
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            color: white;
            border: none;
            padding: 15px 40px;
            font-size: 1.1em;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
        }

        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
        }

        button:active {
            transform: translateY(0);
        }

        .quiz-screen {
            display: none;
        }

        .progress-bar {
            width: 100%;
            height: 10px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            margin-bottom: 20px;
            overflow: hidden;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #1e3c72 0%, #fdfbd3 100%);
            transition: width 0.3s ease;
        }

        .question-info {
            display: flex;
            justify-content: space-between;
            margin-bottom: 20px;
            color: #b3c2d1;
        }

        .question-container {
            margin-bottom: 30px;
        }

        .question {
            font-size: 1.4em;
            color: #fff;
            margin-bottom: 25px;
            line-height: 1.5;
        }

        .options {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .option {
            background: rgba(255, 255, 255, 0.05);
            border: 2px solid rgba(255, 255, 255, 0.1);
            padding: 14px 20px;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1.1em;
            color: #e0e0e0;
        }

        .option:hover {
            border-color: rgba(253, 251, 211, 0.4);
            background: rgba(255, 255, 255, 0.15);
            transform: translateX(5px);
        }

        .option.selected {
            border-color: #fdfbd3;
            background: rgba(253, 251, 211, 0.2);
            color: white;
        }

        .option.correct {
            border-color: #28a745;
            background: rgba(40, 167, 69, 0.3);
            color: white;
        }

        .option.incorrect {
            border-color: #dc3545;
            background: rgba(220, 53, 69, 0.3);
            color: white;
        }

        .option.disabled {
            cursor: not-allowed;
            opacity: 0.7;
        }

        .feedback-container {
            margin-top: 20px;
            padding: 15px;
            border-radius: 10px;
            display: none;
        }

        .feedback-container.show {
            display: block;
        }

        .feedback-container.correct-feedback {
            background: rgba(40, 167, 69, 0.2);
            border: 2px solid #28a745;
            color: #c3e6cb;
        }

        .feedback-container.incorrect-feedback {
            background: rgba(220, 53, 69, 0.2);
            border: 2px solid #dc3545;
            color: #f5c6cb;
        }

        .feedback-message {
            font-size: 1.1em;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .show-answer-btn {
            background: rgba(255, 255, 255, 0.15);
            color: white;
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 10px 20px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 1em;
            margin-top: 10px;
        }

        .show-answer-btn:hover {
            background: rgba(255, 255, 255, 0.25);
        }

        .correct-answer-text {
            margin-top: 10px;
            font-size: 1em;
            padding: 10px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 5px;
            display: none;
            color: #fff;
        }

        .correct-answer-text.show {
            display: block;
        }

        .navigation {
            display: flex;
            justify-content: space-between;
            margin-top: 30px;
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
        }

        .btn-secondary:hover {
            box-shadow: 0 6px 20px rgba(255, 255, 255, 0.2);
        }

        .results-screen {
            display: none;
            text-align: center;
        }

        .score-circle {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            margin: 30px auto;
            color: white;
            box-shadow: 0 10px 30px rgba(42, 82, 152, 0.4);
        }

        .score-circle .score {
            font-size: 3em;
            font-weight: bold;
        }

        .score-circle .total {
            font-size: 1.2em;
            opacity: 0.9;
        }

        .results-message {
            font-size: 1.5em;
            margin-bottom: 20px;
            color: #fff;
        }

        .results-details {
            background: rgba(255, 255, 255, 0.05);
            padding: 20px;
            border-radius: 10px;
            margin: 30px 0;
            text-align: left;
        }

        .results-details p {
            margin: 10px 0;
            font-size: 1.1em;
            color: #e0e0e0;
        }

        .hidden {
            display: none;
        }

        @media (max-width: 600px) {
            .container {
                padding: 25px;
            }

            .header h1 {
                font-size: 1.8em;
            }

            .question {
                font-size: 1.2em;
            }

            button {
                padding: 12px 30px;
                font-size: 1em;
            }
        }

.uiverse-midnight-sky {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: #050505;
  position: fixed;
  inset: 0;
  z-index: -2;
}

/* Base Sky Layer */
.uiverse-midnight-sky .sky-canvas {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  background: #050505;
}

/* Generic star layer style */
.uiverse-midnight-sky .stars {
  position: absolute;
  inset: 0;
  background-repeat: repeat;
  pointer-events: none;
}

/* Layer 1: Small fast twinkling stars - High density */
.uiverse-midnight-sky .stars-1 {
  background-image: radial-gradient(1px 1px at 10% 10%, #fff, transparent),
    radial-gradient(1px 1px at 30% 20%, #fff, transparent),
    radial-gradient(1px 1px at 50% 50%, #fff, transparent),
    radial-gradient(1px 1px at 70% 30%, #fff, transparent),
    radial-gradient(1px 1px at 90% 10%, #fff, transparent);
  background-size: 200px 200px;
  animation: twinkle 3s ease-in-out infinite;
}

/* Layer 2: Medium slower twinkling stars */
.uiverse-midnight-sky .stars-2 {
  background-image: radial-gradient(1.5px 1.5px at 20% 40%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 60% 85%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 85% 65%, #fff, transparent);
  background-size: 300px 300px;
  animation: twinkle 5s ease-in-out infinite 1s;
}

/* Layer 3: Larger, very slow twinkling stars */
.uiverse-midnight-sky .stars-3 {
  background-image: radial-gradient(2px 2px at 40% 70%, #fff, transparent),
    radial-gradient(2px 2px at 10% 80%, #fff, transparent),
    radial-gradient(2px 2px at 80% 40%, #fff, transparent);
  background-size: 400px 400px;
  animation: twinkle 7s ease-in-out infinite 2s;
}

/* Meteor / Shooting Star Layer */
.uiverse-midnight-sky .meteor {
  position: absolute;
  width: 2px;
  height: 2px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 0 10px 2px rgba(255, 255, 255, 0.5);
  opacity: 0;
  pointer-events: none;
}

/* Meteor Tail */
.uiverse-midnight-sky .meteor::after {
  content: "";
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 80px;
  height: 1px;
  background: linear-gradient(90deg, #fff, transparent);
}

/* Meteor Instances with staggered starts */
.uiverse-midnight-sky .m1 {
  top: 10%;
  left: 110%;
  animation: shoot 8s linear infinite;
}
.uiverse-midnight-sky .m2 {
  top: 30%;
  left: 110%;
  animation: shoot 12s linear infinite 4s;
}
.uiverse-midnight-sky .m3 {
  top: 50%;
  left: 110%;
  animation: shoot 10s linear infinite 2s;
}

/* The Moon */
.uiverse-midnight-sky .moon {
  position: absolute;
  top: 15%;
  right: 15%;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: transparent;
  box-shadow: 15px 15px 0 0 #fdfbd3;
  filter: drop-shadow(0 0 15px rgba(253, 251, 211, 0.4));
  z-index: 10;
}

/* Twinkle Animation */
@keyframes twinkle {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.2;
  }
}

/* Shooting Star Animation - Using % instead of vw/vh */
@keyframes shoot {
  0% {
    transform: translateX(0) translateY(0) rotate(-35deg);
    opacity: 0;
  }
  5% {
    opacity: 1;
  }
  15% {
    transform: translateX(-1500px) translateY(1000px) rotate(-35deg);
    opacity: 0;
  }
  100% {
    transform: translateX(-1500px) translateY(1000px) rotate(-35deg);
    opacity: 0;
  }
}

/* Theme Toggle Button */
.theme-toggle-btn {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 100;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    padding: 10px 15px;
    font-size: 1.5rem;
    cursor: pointer;
    backdrop-filter: blur(5px);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.theme-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

/* Morning Background Layer */
.uiverse-morning-sky {
    position: fixed;
    inset: 0;
    z-index: -2;
    background: linear-gradient(to bottom, #87CEEB 0%, #e0f6ff 100%);
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

body.theme-morning .theme-toggle-btn {
    background: rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.2);
    color: #333;
}

body.theme-morning .uiverse-morning-sky { opacity: 1; }
body.theme-morning #night-sky { opacity: 0; }

#night-sky { transition: opacity 0.5s ease; }

/* Morning Sun */
.uiverse-morning-sky .sun {
    position: absolute;
    top: 15%;
    left: 15%;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, #ffeb3b, #ffb300);
    border-radius: 50%;
    box-shadow: 0 0 50px #ffb300;
    animation: sunPulse 4s infinite alternate;
}

@keyframes sunPulse {
    0% { transform: scale(1); box-shadow: 0 0 40px #ffb300; }
    100% { transform: scale(1.05); box-shadow: 0 0 60px #ffb300; }
}

/* Morning Clouds */
.uiverse-morning-sky .clouds {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.uiverse-morning-sky .cloud {
    position: absolute;
    background: white;
    border-radius: 50px;
    opacity: 0.8;
    filter: drop-shadow(0 5px 5px rgba(0,0,0,0.05));
}
.uiverse-morning-sky .cloud::before, .uiverse-morning-sky .cloud::after {
    content: '';
    position: absolute;
    background: white;
    border-radius: 50%;
}
.uiverse-morning-sky .cloud-1 {
    width: 120px; height: 40px;
    top: 20%; left: -150px;
    animation: floatCloud 30s linear infinite;
}
.uiverse-morning-sky .cloud-1::before { width: 50px; height: 50px; top: -25px; left: 15px; }
.uiverse-morning-sky .cloud-1::after { width: 70px; height: 70px; top: -35px; right: 15px; }

.uiverse-morning-sky .cloud-2 {
    width: 150px; height: 50px;
    top: 40%; left: -200px;
    animation: floatCloud 45s linear infinite 5s;
}
.uiverse-morning-sky .cloud-2::before { width: 60px; height: 60px; top: -30px; left: 20px; }
.uiverse-morning-sky .cloud-2::after { width: 80px; height: 80px; top: -40px; right: 20px; }

.uiverse-morning-sky .cloud-3 {
    width: 100px; height: 35px;
    top: 10%; left: -120px;
    animation: floatCloud 25s linear infinite 15s;
}
.uiverse-morning-sky .cloud-3::before { width: 40px; height: 40px; top: -20px; left: 15px; }
.uiverse-morning-sky .cloud-3::after { width: 60px; height: 60px; top: -30px; right: 15px; }

@keyframes floatCloud {
    0% { left: -200px; }
    100% { left: 110%; }
}

/* Morning Birds */
.uiverse-morning-sky .birds {
    position: absolute;
    top: 25%;
    width: 100%;
}
.uiverse-morning-sky .bird {
    position: absolute;
    width: 20px;
    height: 10px;
    animation: flyBird 20s linear infinite;
    left: -50px;
}
.uiverse-morning-sky .bird::before, .uiverse-morning-sky .bird::after {
    content: '';
    position: absolute;
    width: 10px; height: 10px;
    border-top: 2px solid #333;
    border-radius: 50%;
    top: 0;
}
.uiverse-morning-sky .bird::before { left: 0; }
.uiverse-morning-sky .bird::after { right: 0; }

.uiverse-morning-sky .bird-1 { --bird-scale: 1; top: 10%; animation-delay: 2s; animation-duration: 18s; }
.uiverse-morning-sky .bird-2 { --bird-scale: 0.8; top: 15%; animation-delay: 6s; }
.uiverse-morning-sky .bird-3 { --bird-scale: 0.6; top: 5%; animation-delay: 12s; animation-duration: 25s;}

@keyframes flyBird {
    0% { left: -50px; transform: translateY(0) scale(var(--bird-scale, 1)); }
    25% { transform: translateY(-20px) scale(var(--bird-scale, 1)); }
    50% { transform: translateY(10px) scale(var(--bird-scale, 1)); }
    75% { transform: translateY(-10px) scale(var(--bird-scale, 1)); }
    100% { left: 110%; transform: translateY(0) scale(var(--bird-scale, 1)); }
}

/* Style Overrides for Morning Theme */
body.theme-morning .container {
    background-color: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.4);
    color: #333;
    box-shadow: 0 20px 100px rgba(0, 0, 0, 0.1);
}
body.theme-morning .container::before, body.theme-morning .container::after {
    background-color: rgba(255, 152, 0, 0.15); /* Orange blob glow */
}
body.theme-morning .header h1 {
    color: #d84315;
    text-shadow: none;
}
body.theme-morning .header p, body.theme-morning .start-screen p, body.theme-morning .question-info, body.theme-morning .results-details p {
    color: #555;
}
body.theme-morning .start-screen h2, body.theme-morning .question, body.theme-morning .results-message {
    color: #222;
}
body.theme-morning .quiz-info {
    background: rgba(0, 0, 0, 0.05);
}
body.theme-morning .quiz-info p {
    color: #444;
}
body.theme-morning .quiz-info strong {
    color: #d84315;
}
body.theme-morning .option {
    background: rgba(255, 255, 255, 0.5);
    border-color: rgba(0, 0, 0, 0.1);
    color: #444;
}
body.theme-morning .option:hover {
    background: rgba(255, 255, 255, 0.9);
    border-color: #ff9800;
}
body.theme-morning .option.selected {
    background: rgba(255, 152, 0, 0.2);
    border-color: #ff9800;
    color: #d84315;
}
body.theme-morning .option.correct {
    background: rgba(40, 167, 69, 0.3);
    border-color: #28a745;
    color: #155724;
}
body.theme-morning .option.incorrect {
    background: rgba(220, 53, 69, 0.3);
    border-color: #dc3545;
    color: #721c24;
}
body.theme-morning button, body.theme-morning .mode-btn {
    background: linear-gradient(135deg, #ff9800 0%, #ff5722 100%);
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.4);
}
body.theme-morning .score-circle {
    background: linear-gradient(135deg, #ff9800 0%, #ff5722 100%);
    box-shadow: 0 10px 30px rgba(255, 152, 0, 0.4);
}
body.theme-morning .progress-fill {
    background: linear-gradient(90deg, #ff9800 0%, #ffeb3b 100%);
}
body.theme-morning .progress-bar {
    background: rgba(0, 0, 0, 0.1);
}
body.theme-morning .correct-answer-text {
    background: rgba(0, 0, 0, 0.05);
    color: #333;
}
body.theme-morning .btn-secondary {
    background: rgba(0, 0, 0, 0.1);
}
body.theme-morning .feedback-container.correct-feedback {
    background: rgba(40, 167, 69, 0.3);
    border-color: #28a745;
}
body.theme-morning .feedback-container.correct-feedback .feedback-message {
    color: #0c3e17 !important; /* Force very dark green */
    text-shadow: 0 0 1px rgba(255,255,255,0.8);
}
body.theme-morning .feedback-container.incorrect-feedback {
    background: rgba(220, 53, 69, 0.3);
    border-color: #dc3545;
}
body.theme-morning .feedback-container.incorrect-feedback .feedback-message {
    color: #5c1118 !important; /* Force very dark red */
    text-shadow: 0 0 1px rgba(255,255,255,0.8);
}

/* ====== Match Table Styles ====== */
.match-question-title {
    font-size: 1.4em;
    font-weight: 600;
    margin-bottom: 16px;
    color: #fdfbd3;
}

.match-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 25px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.15);
    font-size: 0.95em;
}

.match-table thead th {
    background: rgba(30, 60, 114, 0.6);
    color: #fdfbd3;
    padding: 12px 16px;
    text-align: left;
    font-weight: 700;
    font-size: 1.05em;
    border-bottom: 2px solid rgba(253, 251, 211, 0.25);
    letter-spacing: 0.3px;
}

.match-table tbody tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    transition: background 0.2s ease;
}

.match-table tbody tr:last-child {
    border-bottom: none;
}

.match-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.match-table td {
    padding: 12px 16px;
    vertical-align: top;
    color: #e0e0e0;
    line-height: 1.5;
}

.match-table td.match-key {
    width: 35px;
    text-align: center;
    font-weight: 700;
    color: #fdfbd3;
    padding-right: 8px;
    font-size: 1em;
}

.match-table td.match-value {
    font-size: 0.95em;
}

/* Alternating row tint for readability */
.match-table tbody tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.03);
}

/* ====== Morning Theme Match Table ====== */
body.theme-morning .match-question-title {
    color: #222;
}

body.theme-morning .match-table {
    border-color: rgba(0, 0, 0, 0.12);
}

body.theme-morning .match-table thead th {
    background: rgba(255, 152, 0, 0.15);
    color: #d84315;
    border-bottom-color: rgba(213, 67, 21, 0.2);
}

body.theme-morning .match-table tbody tr {
    border-bottom-color: rgba(0, 0, 0, 0.06);
}

body.theme-morning .match-table tbody tr:hover {
    background: rgba(255, 152, 0, 0.06);
}

body.theme-morning .match-table td {
    color: #444;
}

body.theme-morning .match-table td.match-key {
    color: #d84315;
}

body.theme-morning .match-table tbody tr:nth-child(even) {
    background: rgba(0, 0, 0, 0.02);
}