@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700;900&family=JetBrains+Mono:wght@400;500;700&display=swap');

/* --- Theme Variables --- */
:root {
    --bg: #f0ecf7;
    --card: #ffffff;
    --card-border: #e4dff0;
    --card-shadow: 0 2px 16px rgba(108,92,231,0.06);
    --text: #1e1e2f;
    --text-sub: #4a4a6a;
    --text-muted: #9e9eb8;
    --input-bg: #f8f6fc;
    --input-border: #d8d2e8;
    --accent: #6c5ce7;
    --accent-light: #a29bfe;
    --accent-bg: rgba(108,92,231,0.06);
    --green: #00b894;
    --pink: #fd79a8;
    --red: #e17055;
}

[data-theme="dark"] {
    --bg: #13132b;
    --card: #1e1e3a;
    --card-border: #2d2d52;
    --card-shadow: 0 2px 20px rgba(0,0,0,0.2);
    --text: #e8e8f0;
    --text-sub: #b0b0cc;
    --text-muted: #6e6e8e;
    --input-bg: #252548;
    --input-border: #3a3a60;
    --accent: #a29bfe;
    --accent-light: #c4bfff;
    --accent-bg: rgba(162,155,254,0.08);
    --green: #55efc4;
    --pink: #fab1d0;
    --red: #fab1a0;
}

/* --- Reset & Base --- */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    transition: background 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
}

/* --- Layout --- */
.layout {
    display: flex;
    max-width: 980px;
    margin: 0 auto;
    padding: 28px 20px;
    gap: 24px;
}

.main-panel { flex: 1; max-width: 600px; }
.side-panel { width: 290px; flex-shrink: 0; }

/* --- Card base --- */
.card-style {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    box-shadow: var(--card-shadow);
    transition: background 0.3s, border-color 0.3s;
}

/* --- Header --- */
header {
    text-align: center;
    margin-bottom: 24px;
    position: relative;
    padding-top: 8px;
}

header h1 {
    font-size: 2.6rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -1px;
    margin-bottom: 6px;
}

header h1 .subtitle {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0;
}

.puzzle-info {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 1rem;
    color: var(--text-muted);
    font-weight: 400;
}

#puzzle-number { font-weight: 700; color: var(--accent); }

.rank-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    margin-top: 10px;
    font-size: 0.88rem;
    color: var(--text-muted);
}

.rank-info .sim-value {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent);
    font-weight: 700;
    font-size: 1rem;
}

/* --- Toggle Buttons (top) --- */
.dark-toggle {
    position: absolute;
    top: 0; left: 0;
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: var(--card);
    cursor: pointer;
    transition: all 0.2s;
}
.dark-toggle:hover { transform: scale(1.08); box-shadow: var(--card-shadow); }

.reset-btn {
    position: absolute;
    top: 0; right: 0;
    padding: 6px 12px;
    font-size: 0.68rem;
    border: 1px solid var(--card-border);
    border-radius: 8px;
    background: var(--card);
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
}
.reset-btn:hover { border-color: var(--red); color: var(--red); }

/* --- Input Area --- */
.input-area {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

#guess-input {
    flex: 1;
    padding: 14px 18px;
    font-size: 1.05rem;
    border: 2px solid var(--input-border);
    border-radius: 12px;
    background: var(--input-bg);
    color: var(--text);
    outline: none;
    font-family: inherit;
    transition: all 0.2s;
}
#guess-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-bg);
    background: var(--card);
}

#guess-btn {
    padding: 14px 28px;
    font-size: 1.05rem;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #fff;
    cursor: pointer;
    font-weight: 700;
    font-family: inherit;
    letter-spacing: 0.5px;
    transition: all 0.15s;
    box-shadow: 0 3px 14px rgba(108,92,231,0.2);
}
#guess-btn:hover { transform: translateY(-1px); box-shadow: 0 5px 20px rgba(108,92,231,0.3); }
#guess-btn:active { transform: translateY(0); }
#guess-btn:disabled { background: var(--input-border); box-shadow: none; cursor: not-allowed; transform: none; }

/* --- Messages --- */
.error {
    text-align: center;
    padding: 10px 14px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--red);
    background: rgba(225,112,85,0.07);
    border: 1px solid rgba(225,112,85,0.12);
    border-radius: 10px;
    margin-bottom: 12px;
    animation: slideIn 0.2s ease;
}

.success {
    text-align: center;
    padding: 20px;
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--green);
    background: rgba(0,184,148,0.07);
    border: 1px solid rgba(0,184,148,0.12);
    border-radius: 14px;
    margin-bottom: 12px;
    animation: popIn 0.35s cubic-bezier(0.175,0.885,0.32,1.275);
}

@keyframes slideIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }
@keyframes popIn { 0% { opacity: 0; transform: scale(0.92); } 100% { opacity: 1; transform: scale(1); } }

.hidden { display: none !important; }

/* --- Register --- */
.register {
    background: var(--card);
    border: 1px solid var(--card-border);
    border-radius: 14px;
    padding: 18px;
    margin-bottom: 12px;
    text-align: center;
    box-shadow: var(--card-shadow);
    animation: slideIn 0.3s ease;
}
.register p { font-size: 0.95rem; color: var(--accent); font-weight: 600; margin-bottom: 10px; }
.register-form { display: flex; gap: 8px; justify-content: center; }

#name-input {
    padding: 10px 14px; font-size: 0.92rem;
    border: 2px solid var(--input-border); border-radius: 9px;
    background: var(--input-bg); color: var(--text);
    outline: none; font-family: inherit; width: 170px;
    transition: border-color 0.2s;
}
#name-input:focus { border-color: var(--accent); }

#register-btn {
    padding: 10px 20px; font-size: 0.92rem; border: none; border-radius: 9px;
    background: linear-gradient(135deg, var(--green), #55efc4);
    color: #fff; cursor: pointer; font-weight: 600; font-family: inherit;
    transition: all 0.15s; box-shadow: 0 2px 10px rgba(0,184,148,0.18);
}
#register-btn:hover { transform: translateY(-1px); }

/* --- Controls --- */
.controls { display: flex; gap: 8px; margin-bottom: 14px; }

.small-btn {
    padding: 7px 14px; font-size: 0.8rem;
    border: 1px solid var(--card-border); border-radius: 9px;
    background: var(--card); color: var(--text-muted);
    cursor: pointer; font-family: inherit;
    transition: all 0.15s;
}
.small-btn:hover { border-color: var(--accent); color: var(--accent); }

.guess-count {
    font-size: 0.82rem; color: var(--accent); font-weight: 600;
    padding: 7px 0;
}

.latest-guess-block {
    background: rgba(225,112,85,0.08); border: 1px solid rgba(225,112,85,0.25);
    border-radius: 14px; padding: 2px 14px;
    margin-bottom: 10px;
}
.latest-guess-block .guess-row.latest {
    border-left: none; padding-left: 0;
    background: transparent;
}

/* --- Hints --- */
.hints {
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 14px; margin-bottom: 14px;
    box-shadow: var(--card-shadow);
}
.hint-buttons { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }

.hint-level {
    padding: 7px 12px; font-size: 0.78rem;
    border: 1px solid var(--input-border); border-radius: 8px;
    background: var(--input-bg); color: var(--text-muted);
    cursor: pointer; font-family: inherit; transition: all 0.15s;
}
.hint-level:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.hint-level.used {
    border-color: var(--accent); color: #fff;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    font-weight: 500; box-shadow: 0 2px 8px rgba(108,92,231,0.15);
}
.hint-level.locked { opacity: 0.3; cursor: not-allowed; }
.hint-level.unlocked { border-color: var(--green); color: var(--green); opacity: 1; cursor: pointer; }

#hint-results { font-size: 0.85rem; color: var(--text-sub); }
.hint-result-item { padding: 5px 0; border-bottom: 1px solid var(--accent-bg); }
.hint-result-item:last-child { border-bottom: none; }

/* --- Guess List --- */
.guess-list {
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 2px 14px;
    box-shadow: var(--card-shadow);
}

.guess-header {
    display: flex; padding: 10px 0;
    font-size: 0.7rem; color: var(--text-muted);
    border-bottom: 1px solid var(--accent-bg);
    text-transform: uppercase; letter-spacing: 1px; font-weight: 600;
}

.guess-row {
    display: flex; align-items: center;
    padding: 9px 0;
    border-bottom: 1px solid rgba(108,92,231,0.03);
    transition: all 0.15s;
}
.guess-row:last-child { border-bottom: none; }
.guess-row:hover { background: var(--accent-bg); padding-left: 4px; border-radius: 6px; }
.guess-row.correct {
    background: rgba(0,184,148,0.05);
    border-left: 3px solid var(--green);
    padding-left: 10px; border-radius: 0 6px 6px 0;
}
.guess-row.latest {
    background: rgba(225,112,85,0.06);
    border-left: 3px solid var(--red);
    padding-left: 10px; border-radius: 0 6px 6px 0;
}
.guess-row.latest .col-word { color: var(--red); }
.guess-row.latest.correct { border-left-color: var(--green); }

.col-num { width: 46px; text-align: center; font-size: 0.78rem; color: var(--text-muted); font-weight: 300; order: 1; }
.col-word { width: 80px; font-weight: 600; color: var(--text); order: 2; font-size: 0.92rem; margin-left: 6px; }
.col-sim {
    width: 72px; text-align: right;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem; font-weight: 700;
    color: var(--text-muted); order: 5; padding-left: 10px;
}
.col-sim.ranked { color: var(--green); }
.col-sim.negative { color: var(--red); }

.col-rank {
    width: 55px; text-align: center; font-size: 0.8rem; order: 3;
    font-family: 'JetBrains Mono', monospace; font-weight: 700;
}
.col-rank.rank-gold { color: #f1c40f; text-shadow: 0 0 6px rgba(241,196,15,0.3); }
.col-rank.rank-deep { color: var(--green); }
.col-rank.rank-mid { color: #55efc4; }
.col-rank.rank-light { color: #b2dfdb; }
.col-rank.rank-out { color: var(--text-muted); font-weight: 400; font-size: 0.72rem; }

.col-bar { flex: 1; padding-left: 8px; order: 4; }

.sim-bar {
    height: 14px; border-radius: 7px;
    transition: width 0.4s cubic-bezier(0.25,0.46,0.45,0.94);
    overflow: hidden; position: relative;
}
.sim-bar.positive { background: linear-gradient(90deg, #dfe6e9, var(--accent-light), var(--accent)); }
.sim-bar.positive::after {
    content: ""; position: absolute; inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
    animation: shimmer 2.5s ease-in-out infinite;
}
@keyframes shimmer { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
.sim-bar.negative { background: linear-gradient(90deg, #f5f5f5, #ddd); }

/* --- Scroll Buttons --- */
.scroll-btn-wrap {
    display: flex; justify-content: flex-end;
    margin: 6px 0;
}
.scroll-btn {
    padding: 7px 16px; font-size: 0.8rem;
    border: 1px solid var(--card-border); border-radius: 9px;
    background: var(--card); color: var(--text-muted);
    cursor: pointer; font-family: inherit;
    transition: all 0.15s;
}
.scroll-btn:hover { border-color: var(--accent); color: var(--accent); }

/* --- Leaderboard --- */
.leaderboard {
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 18px;
    box-shadow: var(--card-shadow);
}

.leaderboard h2, .lunch-board h2 {
    font-size: 1rem; font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 14px; text-align: center;
}

.leaderboard-empty {
    font-size: 0.83rem; color: var(--text-muted);
    text-align: center; padding: 24px 10px; font-weight: 300; line-height: 1.6;
}

.lb-row {
    display: flex; align-items: center;
    padding: 9px 4px; border-bottom: 1px solid var(--accent-bg);
    font-size: 0.83rem; border-radius: 6px; transition: background 0.12s;
}
.lb-row:hover { background: var(--accent-bg); }
.lb-row:last-child { border-bottom: none; }

.lb-rank { width: 26px; font-weight: 800; font-size: 0.95rem; color: var(--accent); text-align: center; }
.lb-rank.gold { color: #f1c40f; text-shadow: 0 0 6px rgba(241,196,15,0.3); }
.lb-rank.silver { color: #aaa; }
.lb-rank.bronze { color: #cd7f32; }

.lb-name { flex: 1; font-weight: 500; color: var(--text); padding: 0 8px; }
.lb-detail { text-align: right; font-size: 0.76rem; color: var(--text-muted); font-family: 'JetBrains Mono', monospace; }
.lb-time { display: block; font-size: 0.68rem; color: var(--text-muted); margin-top: 2px; opacity: 0.7; }

/* --- 점메추 --- */
.lunch-section {
    margin-top: 24px;
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 18px;
    box-shadow: var(--card-shadow);
}
.lunch-section h3 { font-size: 0.95rem; font-weight: 700; color: var(--pink); text-align: center; margin-bottom: 10px; }

.lunch-form { display: flex; gap: 8px; }
.lunch-form input {
    flex: 1; padding: 10px 12px; font-size: 0.88rem;
    border: 2px solid rgba(253,121,168,0.12); border-radius: 9px;
    background: var(--input-bg); color: var(--text);
    outline: none; font-family: inherit; transition: border-color 0.2s;
}
.lunch-form input:focus { border-color: var(--pink); }

#lunch-submit-btn {
    padding: 10px 16px; font-size: 0.88rem; border: none; border-radius: 9px;
    background: linear-gradient(135deg, var(--pink), #fab1d0);
    color: #fff; cursor: pointer; font-weight: 600; font-family: inherit;
    transition: all 0.15s; box-shadow: 0 2px 10px rgba(253,121,168,0.15); white-space: nowrap;
}
#lunch-submit-btn:hover { transform: translateY(-1px); }

.lunch-board {
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 18px; margin-top: 14px;
    box-shadow: var(--card-shadow);
}
.lunch-board h2 {
    background: linear-gradient(135deg, var(--pink), #fab1d0);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.lunch-row {
    display: flex; align-items: center;
    padding: 8px 4px; border-bottom: 1px solid rgba(253,121,168,0.05);
    font-size: 0.83rem; border-radius: 6px; transition: background 0.12s;
}
.lunch-row:hover { background: rgba(253,121,168,0.03); }
.lunch-row:last-child { border-bottom: none; }

.lunch-rank { width: 22px; font-weight: 800; font-size: 0.88rem; color: var(--pink); text-align: center; }
.lunch-info { flex: 1; padding: 0 8px; }
.lunch-menu { font-weight: 600; color: var(--text); font-size: 0.88rem; }
.lunch-nick { font-size: 0.7rem; color: var(--text-muted); margin-top: 1px; }

.like-btn {
    display: flex; align-items: center; gap: 3px;
    padding: 4px 10px; border: 1px solid rgba(253,121,168,0.15);
    border-radius: 7px; background: var(--card);
    color: var(--pink); cursor: pointer;
    font-size: 0.76rem; font-family: 'JetBrains Mono', monospace; font-weight: 600;
    transition: all 0.15s;
}
.like-btn:hover { background: rgba(253,121,168,0.06); transform: scale(1.05); }
.like-btn.liked { background: linear-gradient(135deg, var(--pink), #fab1d0); color: #fff; border-color: transparent; }

/* --- About --- */
.about-section {
    max-width: 980px; margin: 8px auto;
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 24px 28px;
    box-shadow: var(--card-shadow);
}
.about-section h2 {
    font-size: 1.1rem; font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 14px; text-align: center;
}
.about-content { display: flex; flex-direction: column; gap: 14px; }
.about-block h3 { font-size: 0.92rem; font-weight: 700; color: var(--accent); margin-bottom: 5px; }
.about-block p { font-size: 0.85rem; color: var(--text-sub); line-height: 1.7; margin-bottom: 3px; }
.about-example { font-size: 0.82rem; color: var(--text-muted); font-style: italic; padding-left: 8px; border-left: 3px solid var(--card-border); }

/* --- Credit --- */
.credit-section {
    max-width: 980px; margin: 10px auto;
    text-align: center; font-size: 0.85rem; color: var(--text-muted);
}
.credit-section a { color: var(--accent); font-weight: 600; text-decoration: none; }
.credit-section a:hover { text-decoration: underline; }

/* --- 피드백 --- */
.feedback-section {
    max-width: 980px; margin: 0 auto;
    background: var(--card); border: 1px solid var(--card-border);
    border-radius: 14px; padding: 22px 24px;
    margin-top: 8px; margin-bottom: 28px;
    box-shadow: var(--card-shadow);
}
.feedback-section h2 {
    font-size: 1rem; font-weight: 800;
    background: linear-gradient(135deg, var(--green), #55efc4);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    margin-bottom: 3px; text-align: center;
}
.feedback-subtitle { text-align: center; font-size: 0.76rem; color: var(--text-muted); font-weight: 300; margin-bottom: 12px; }

.feedback-form { display: flex; gap: 10px; align-items: flex-end; }
.feedback-form input {
    width: 110px; flex-shrink: 0;
    padding: 10px 12px; font-size: 0.88rem;
    border: 2px solid rgba(0,184,148,0.12); border-radius: 9px;
    background: var(--input-bg); color: var(--text);
    outline: none; font-family: inherit; transition: border-color 0.2s;
}
.feedback-form input:focus { border-color: var(--green); }

.feedback-form textarea {
    flex: 1; padding: 10px 12px;
    font-size: 0.85rem; border: 2px solid rgba(0,184,148,0.12);
    border-radius: 9px; background: var(--input-bg); color: var(--text);
    outline: none; font-family: inherit;
    resize: vertical; min-height: 76px; line-height: 1.5;
    transition: border-color 0.2s;
}
.feedback-form textarea:focus { border-color: var(--green); }

#feedback-submit-btn {
    padding: 10px 16px; font-size: 0.85rem; border: none; border-radius: 9px;
    background: linear-gradient(135deg, var(--green), #55efc4);
    color: #fff; cursor: pointer; font-weight: 600; font-family: inherit;
    transition: all 0.15s; box-shadow: 0 2px 10px rgba(0,184,148,0.15); white-space: nowrap;
}
#feedback-submit-btn:hover { transform: translateY(-1px); }

.feedback-list { margin-top: 12px; }
.feedback-item { padding: 7px 0; border-bottom: 1px solid rgba(0,184,148,0.05); font-size: 0.82rem; }
.feedback-item:last-child { border-bottom: none; }
.feedback-item .fb-nick { font-weight: 600; color: var(--green); }
.feedback-item .fb-text { color: var(--text-sub); margin-left: 4px; }
.feedback-item .fb-time { font-size: 0.68rem; color: var(--text-muted); margin-left: 6px; }

/* --- Footer --- */
footer {
    text-align: center; margin-top: 32px; padding-bottom: 16px;
    font-size: 0.78rem; color: var(--text-muted); font-weight: 300;
}
footer a { color: var(--accent); text-decoration: none; font-weight: 500; }
footer a:hover { text-decoration: underline; }

/* --- Responsive --- */
@media (max-width: 800px) {
    .layout { flex-direction: column; max-width: 600px; }
    .side-panel { width: 100%; }
}

@media (max-width: 480px) {
    .layout { padding: 16px 12px; }
    header h1 { font-size: 2rem; }
    #guess-input { font-size: 1rem; padding: 12px 14px; }
    #guess-btn { padding: 12px 20px; font-size: 1rem; }
    .col-word { width: 68px; }
    .guess-list { padding: 2px 10px; }
    .rank-info { font-size: 0.8rem; }
    .feedback-form { flex-direction: column; }
    .feedback-form input { width: 100%; }
}