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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.game-container {
    background: white;
    border-radius: 16px;
    padding: 30px;
    max-width: 500px;
    width: 100%;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

h1 {
    text-align: center;
    color: #333;
    margin-bottom: 15px;
}

.scoreboard {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    padding: 15px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 12px;
}

.score {
    text-align: center;
    padding: 10px 20px;
    border-radius: 8px;
    min-width: 100px;
}

.player-1-score {
    background: rgba(102, 126, 234, 0.15);
    border: 2px solid #667eea;
}

.player-2-score {
    background: rgba(118, 75, 162, 0.15);
    border: 2px solid #764ba2;
}

.mood-emoji {
    display: block;
    font-size: 22px;
    min-height: 28px;
    margin-top: 4px;
    transition: transform 0.2s;
}

.mood-emoji.pop {
    animation: moodPop 0.35s ease-out;
}

@keyframes moodPop {
    0%   { transform: scale(0.5); }
    60%  { transform: scale(1.4); }
    100% { transform: scale(1.0); }
}

.score-label {
    display: block;
    font-size: 12px;
    color: #666;
    margin-bottom: 5px;
}

.score-value {
    display: block;
    font-size: 28px;
    font-weight: bold;
}

.player-1-score .score-value {
    color: #667eea;
}

.player-2-score .score-value {
    color: #764ba2;
}

.score-divider {
    font-size: 14px;
    color: #999;
    font-weight: bold;
}

.game-info {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 15px;
}

.round-counter {
    text-align: center;
    font-size: 16px;
    color: #666;
}

.timer {
    font-size: 16px;
    color: #e65100;
    font-weight: bold;
}

.timer.warning {
    color: #d32f2f;
    animation: pulse 0.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.game-area {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
}

.player-indicator {
    text-align: center;
    font-size: 20px;
    margin-bottom: 15px;
}

#current-player {
    font-weight: bold;
    color: #667eea;
}

.player-2 #current-player {
    color: #764ba2;
}

.instruction {
    text-align: center;
    margin-bottom: 8px;
    font-size: 16px;
    color: #555;
}

.score-note {
    text-align: center;
    margin-bottom: 15px;
    font-size: 13px;
    color: #777;
}

.required-letter {
    display: inline-block;
    font-size: 24px;
    font-weight: bold;
    color: #667eea;
    background: #e8ebff;
    padding: 5px 15px;
    border-radius: 8px;
    margin-left: 10px;
    text-transform: uppercase;
}

.input-area {
    display: flex;
    gap: 10px;
}

#word-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 18px;
    border: 2px solid #ddd;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s;
}

#word-input:focus {
    border-color: #667eea;
}

#submit-btn, #restart-btn {
    padding: 12px 24px;
    font-size: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.2s;
}

#submit-btn:hover, #restart-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

#submit-btn:active, #restart-btn:active {
    transform: translateY(0);
}

.message {
    margin-top: 15px;
    padding: 10px;
    border-radius: 8px;
    text-align: center;
    font-size: 14px;
    min-height: 40px;
}

.message.error {
    background: #ffe8e8;
    color: #d32f2f;
}

.message.success {
    background: #e8f5e9;
    color: #2e7d32;
}

.spelling-note {
    margin-top: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    text-align: center;
    font-size: 13px;
    background: #fff3e0;
    color: #e65100;
    min-height: 0;
}

.spelling-note:empty {
    display: none;
}

.spelling-note .correct-spelling {
    font-weight: bold;
    color: #bf360c;
}

.history-area {
    border-top: 1px solid #eee;
    padding-top: 20px;
}

.history-area h3 {
    color: #333;
    margin-bottom: 10px;
    font-size: 16px;
}

#word-history {
    list-style: none;
    max-height: 200px;
    overflow-y: auto;
}

#word-history li {
    padding: 8px 12px;
    margin-bottom: 5px;
    background: #f8f9fa;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
}

#word-history li .word {
    font-weight: 500;
}

#word-history li .word-entry {
    display: flex;
    align-items: center;
    gap: 8px;
}

#word-history li .word-points {
    font-size: 12px;
    font-weight: 700;
    color: #2e7d32;
}

#word-history li .player {
    color: #888;
    font-size: 14px;
}

#word-history li.player-1 {
    border-left: 3px solid #667eea;
}

#word-history li.player-2 {
    border-left: 3px solid #764ba2;
}

#word-history li.player-system {
    border-left: 3px solid #4caf50;
    background: #e8f5e9;
}

.game-over {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
}

.medal {
    font-size: 80px;
    margin-bottom: 10px;
    animation: medalDrop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards,
               medalSway 2s ease-in-out 0.6s infinite;
    display: block;
    transform-origin: center top;
}

@keyframes medalDrop {
    from { transform: translateY(-80px) scale(0.5); opacity: 0; }
    to   { transform: translateY(0)     scale(1);   opacity: 1; }
}

@keyframes medalSway {
    0%, 100% { transform: rotate(-5deg); }
    50%       { transform: rotate(5deg); }
}

.game-over h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.game-over p {
    font-size: 18px;
    margin-bottom: 20px;
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    max-width: 300px;
    width: 90%;
}

.modal-content h3 {
    color: #333;
    margin-bottom: 10px;
}

.modal-content p {
    color: #666;
    margin-bottom: 15px;
}

.modal-content input {
    width: 100%;
    padding: 12px;
    font-size: 24px;
    text-align: center;
    border: 2px solid #ddd;
    border-radius: 8px;
    margin-bottom: 15px;
    outline: none;
}

.modal-content input:focus {
    border-color: #667eea;
}

.modal-content button {
    width: 100%;
    padding: 12px 24px;
    font-size: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
}

.modal-content button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.mode-content {
    max-width: 430px;
}

.mode-content h3 {
    margin-bottom: 18px;
    line-height: 1.25;
}

.mode-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 14px;
}

.modal-content .mode-choice {
    min-height: 145px;
    padding: 18px 12px;
    border-radius: 12px;
    border: 2px solid #e3e5ef;
    background: #ffffff;
    color: #333;
    box-shadow: 0 8px 22px rgba(31, 35, 56, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.modal-content .mode-choice:hover,
.modal-content .mode-choice:focus {
    border-color: #667eea;
    background: #f7f8ff;
    box-shadow: 0 12px 30px rgba(102, 126, 234, 0.22);
    outline: none;
}

.mode-choice-icon {
    font-size: 44px;
    line-height: 1;
}

.mode-choice-title {
    font-size: 16px;
    font-weight: 800;
}

.modal-content .rules-open-btn {
    background: #f1f3fb;
    color: #3f4664;
    border: 2px solid #e3e5ef;
    box-shadow: none;
}

.modal-content .rules-open-btn:hover,
.modal-content .rules-open-btn:focus {
    background: #e8ebff;
    color: #667eea;
    outline: none;
}

.rules-content {
    max-width: 420px;
    text-align: left;
}

.rules-content h3 {
    text-align: center;
}

.rules-list {
    margin: 16px 0;
    padding-left: 20px;
    color: #4b4b4b;
    font-size: 15px;
    line-height: 1.45;
}

.rules-list li {
    margin-bottom: 8px;
}

.name-input-group {
    margin-bottom: 15px;
    text-align: left;
}

.name-input-group label {
    display: block;
    font-size: 14px;
    color: #666;
    margin-bottom: 5px;
}

.name-input-group input {
    width: 100%;
    padding: 10px 12px;
    font-size: 16px;
    text-align: left;
    border: 2px solid #ddd;
    border-radius: 8px;
    outline: none;
}

.name-input-group input:focus {
    border-color: #667eea;
}

.game-credit {
    margin-top: 18px;
    text-align: center;
    font-size: 12px;
    color: #8a8a8a;
}

.hidden {
    display: none !important;
}

.error-cross {
    position: fixed;
    font-size: 64px;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    animation: crossAppear 0.8s ease-out forwards;
}

@keyframes crossAppear {
    0%   { transform: translate(-50%, -50%) scale(0.2) rotate(-20deg); opacity: 1; }
    35%  { transform: translate(-50%, -50%) scale(1.3) rotate(10deg);  opacity: 1; }
    55%  { transform: translate(-50%, -50%) scale(1.0) rotate(-8deg);  opacity: 1; }
    75%  { transform: translate(-50%, -50%) scale(1.1) rotate(5deg);   opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(0.7) rotate(0deg);   opacity: 0; }
}

#word-input.shake {
    animation: inputShake 0.4s ease-out;
    border-color: #d32f2f !important;
}

@keyframes inputShake {
    0%, 100% { transform: translateX(0); }
    20%       { transform: translateX(-8px); }
    40%       { transform: translateX(8px); }
    60%       { transform: translateX(-5px); }
    80%       { transform: translateX(5px); }
}

.points-popup {
    position: fixed;
    font-size: 22px;
    font-weight: bold;
    pointer-events: none;
    z-index: 9999;
    white-space: nowrap;
    animation: pointsFloat 1.1s ease-out forwards;
}

@keyframes pointsFloat {
    0%   { transform: translate(-50%, 0)   scale(0.6); opacity: 0; }
    20%  { transform: translate(-50%, -10px) scale(1.2); opacity: 1; }
    60%  { transform: translate(-50%, -40px) scale(1.0); opacity: 1; }
    100% { transform: translate(-50%, -75px) scale(0.9); opacity: 0; }
}

.firework-particle {
    position: fixed;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    animation: particleFly 0.8s ease-out forwards;
}

@keyframes particleFly {
    from { transform: translate(0, 0) scale(1); opacity: 1; }
    to   { transform: translate(var(--dx), var(--dy)) scale(0); opacity: 0; }
}

@media (max-width: 480px) {
    .game-container {
        padding: 20px;
    }

    .input-area {
        flex-direction: column;
    }

    #submit-btn {
        width: 100%;
    }

    .mode-options {
        grid-template-columns: 1fr;
    }

    .modal-content .mode-choice {
        min-height: 108px;
    }
}