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

:root {
    --font-size: clamp(14px, 2.2vh, 18px);
    --max-board-height: calc(100dvh - 310px);
    --board-table-side-length: min(95vw, var(--max-board-height));
    
    --long-short-ratio: 3.2;
    --short-length-number-in-board-table: calc(9 * var(--long-short-ratio) + 8);
    --short-length: calc(var(--board-table-side-length) / var(--short-length-number-in-board-table));
    --long-length: calc(var(--long-short-ratio) * var(--short-length));
    --wall-gap: calc(var(--short-length) * 0.25);
    --wall-length: calc(2 * var(--long-length) + var(--short-length) - 2 * var(--wall-gap));
    --wall-width: calc(var(--short-length) - 2 * var(--wall-gap));
    
    --color-text-main: #e0e0e0;
    --color-bg-main: #121212;
    --color-bg-box: #242424;
    --grass-color: #2e4c31; 
    --line-color: #000000; 
}

@media only screen and (min-width: 768px) and (min-height: 768px) {
    :root { --font-size: 30px; }
}
@media only screen and (min-width: 768px), (orientation: landscape) {
    :root { --board-table-side-length: 65vmin; }
}

html { box-sizing: border-box; }
*, *:before, *:after { box-sizing: inherit; }

body {
    font-family: 'Noto Sans KR', sans-serif;
    color: var(--color-text-main);
    background-color: var(--color-bg-main); 
    margin: 0; padding: 0;
    overflow: hidden; 
    overscroll-behavior: none;
    touch-action: manipulation;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}

a, a:link, a:visited { color: #5bc0de; text-decoration: none; transition: color 0.2s ease; }
a:hover, a:active { color: #8addff; }

.gridcontainer0 {
    display: grid; width: 100%; height: 100dvh; 
    padding-top: 55px; padding-bottom: 55px; box-sizing: border-box;
    justify-content: center; align-content: center;
    grid-template-rows: min-content var(--board-table-side-length) min-content;
    grid-template-columns: var(--board-table-side-length); grid-gap: 15px; 
}

.gridcontainer1 { display: grid; grid-row: 1; justify-content: center; align-content: center; grid-template-rows: 1fr; grid-template-columns: 1fr 1fr 1fr 1fr 1fr; gap: 10px; }
#board_table_container { position: relative; grid-row: 2; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5); border-radius: 8px; }
.gridcontainer2 { display: grid; grid-row: 3; justify-content: center; align-content: stretch; grid-template-rows: auto auto; grid-template-columns: 1fr 1fr; gap: 10px; width: 100%; }

h1 { font-size: calc(1.2 * var(--font-size)); font-weight: 700; color: #ffffff; }

table {
    table-layout: fixed; border-radius: 8px; background-color: var(--line-color); 
    border-collapse: collapse; text-align: center; width: var(--board-table-side-length);
    height: var(--board-table-side-length); padding: 0; overflow: hidden;
}

td { position: relative; padding: 0; }
tr.row { height: var(--long-length); }
td.col { width: var(--long-length); }
tr.between_rows { height: var(--short-length); }
td.between_cols { width: var(--short-length); }
tr.row td.col { background-color: var(--grass-color); border-radius: 4px; transition: background-color 0.2s ease; }

div.pawn {
    display: flex; align-items: center; justify-content: center;
    width: calc(var(--long-length) * 0.8); height: calc(var(--long-length) * 0.8);
    border-radius: 50%; margin: 10% auto; background-color: #2c2c2c; 
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.4); font-size: calc(var(--long-length) * 0.5);
    transition: transform 0.2s ease, box-shadow 0.2s ease; z-index: 5;
}

div.pawn.pawn0 { border: 2px solid #ffb300; }
div.pawn.pawn0::after { content: "🐰"; }
div.pawn.pawn1 { border: 2px solid #a1887f; }
div.pawn.pawn1::after { content: "🐻"; }

div.horizontal_wall, div.vertical_wall { display: inline-block; position: absolute; left: var(--wall-gap); top: var(--wall-gap); background-color: #8d6e63; border-radius: 4px; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.6); z-index: 4; }
div.horizontal_wall { width: var(--wall-length); height: var(--wall-width); }
div.vertical_wall { width: var(--wall-width); height: var(--wall-length); }
div.horizontal_wall.shadow, div.vertical_wall.shadow { opacity: 0.6; background-color: #bcaaa4; }

div.pawn.shadow { opacity: 0.4; background-color: rgba(255, 255, 255, 0.2); box-shadow: none; border: 1px solid rgba(255,255,255,0.3); }

#number_of_left_walls_box { display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: var(--font-size); text-align: center; font-weight: bold; background-color: var(--color-bg-box); color: var(--color-text-main); padding: 10px; border-radius: 12px; border: 1px solid #333; box-shadow: 0 4px 10px rgba(0,0,0,0.3); }
div.pawn.symbol { width: calc(var(--font-size) * 1.5); height: calc(var(--font-size) * 1.5); font-size: var(--font-size); margin-right: calc(var(--font-size) / 2); border-width: 2px; }
div.pawn.button { margin-left: var(--short-length); margin-right: var(--short-length); cursor: pointer; }
div.horizontal_wall.symbol { position: initial; vertical-align: middle; width: calc(var(--font-size) * 1.5); height: calc(var(--font-size) * 0.4); margin-left: calc(var(--font-size) / 6); margin-right: calc(var(--font-size) / 6); box-shadow: none; }
div.mul_sign_wall_num_container { display: inline-block; vertical-align: middle; }
div.multiplication_sign { display: inline; vertical-align: middle; margin-left: calc(var(--font-size) / 6); margin-right: calc(var(--font-size) / 6); color: #888; }
div.wall_num { display: inline-block; vertical-align: middle; width: var(--font-size); text-align: center; color: #fff; }

.fade_box { position: absolute; display: flex; flex-wrap: wrap; flex-direction: column; align-items: center; justify-content: space-evenly; top: calc((var(--board-table-side-length) - 9 * var(--long-length)) / 2); left: 0; width: var(--board-table-side-length); height: calc(9 * var(--long-length)); font-size: calc(var(--font-size) * 1.1); font-weight: 700; padding: 5%; box-sizing: border-box; text-align: center; z-index: -1; visibility: hidden; opacity: 0; border-radius: 12px; box-shadow: 0 15px 35px rgba(0,0,0,0.5); }
.fade_box.in { z-index: 10; visibility: visible; opacity: 1; animation-name: fade_in; animation-duration: 0.5s; }
.fade_box.in.about { justify-content: flex-start; top: 0; height: calc(3 *var(--board-table-side-length)); overflow: visible; text-align: left; }
@keyframes fade_in { 0% {opacity: 0; transform: translateY(10px);} 100% {opacity: 1; transform: translateY(0);} }
.fade_box.inout { z-index: -1; visibility: hidden; opacity: 0; animation-name: fade_inout; }
@keyframes fade_inout { 0% {visibility: visible; z-index: 10; opacity: 0; transform: scale(0.9);} 15% {opacity: 1; transform: scale(1);} 85% {opacity: 1; transform: scale(1);} 100% {visibility: hidden; z-index: 10; opacity: 0; transform: scale(1.1);} }

#about_box, #choose_ai_level_message_box, #choose_pawn_message_box, #restart_message_box, #game_result_message_box, #update_notification_message_box { background-color: rgba(36, 36, 36, 0.95); border: 1px solid #444; color: var(--color-text-main); }
#note_message_box{ background-color:rgba(192, 57, 43, 0.9); color: white; animation-duration: 3s; }
#game_result_message_box{ animation-duration: 10s; background-color: rgba(39, 174, 96, 0.95); color: white; }

.button_container.in_message_box { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; width: 100%; margin-top: 10px; }
.button_container.above.left, .button_container.below { grid-column: 1 / span 2; display: flex; align-items: center; justify-content: center; }
.button_container.above.left { grid-column: 1 / span 3; }
.button_container.above.right { grid-column-start: 5; display: flex; align-items: center; justify-content: flex-end; }

button { font-family: 'Noto Sans KR', sans-serif; cursor: pointer; }
button.button { display: inline-block; height: calc(3 * var(--font-size)); width: 100%; border: none; border-radius: 8px; padding: 0; color: white; font-size: var(--font-size); font-weight: 700; text-align: center; text-decoration: none; margin: 2%; box-shadow: 0 4px 6px rgba(0,0,0,0.3); transition: all 0.3s ease; min-height: 44px; }
button.button:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 6px 12px rgba(0,0,0,0.5); }
button.button:active:not(:disabled) { transform: translateY(0); box-shadow: 0 2px 4px rgba(0,0,0,0.2); }

button.update, button.ai_level, button.close, button.restart_yes_no { display: inline-block; height: calc(2.5 * var(--font-size)); width: 45%; max-width: 140px; border: 1px solid #555; margin: 0; padding: 0; background-color: #333; color: white; font-size: calc(var(--font-size) * 0.9); font-weight: 700; text-align: center; text-decoration: none; border-radius: 8px; box-shadow: 0 2px 4px rgba(0,0,0,0.2); transition: all 0.2s ease; min-height: 44px; }
button.ai_level:hover, button.restart_yes_no:hover, button.update:hover, button.close:hover { background-color: #444; border-color: #777; transform: translateY(-1px); }

button#update_now { width: 95%; max-width: 300px; background-color: #2980b9; color: white; border: none; }
button#update_now:hover { background-color: #1f618d; }
button#later { width: 95%; max-width: 300px; background-color: #555; color: white; border: none; }
button#later:hover { background-color: #666; }

button.close { background-color: #555; color: white; display: block; margin: 15px auto 0; border: none; }
button.close:hover { background-color: #666; }

.button.restart { background-color: #8e44ad; }
.button.undo { background-color: #d35400; }
.button.redo { background-color: #2c3e50; border: 1px solid #444; }
.button.about { background-color: #7f8c8d; }
.button.cancel { background-color: var(--color-bg-box); color: #e74c3c; border: 2px solid #e74c3c; }
.button.cancel:hover:not(:disabled) { background-color: rgba(231, 76, 60, 0.1); }
.button.confirm { background-color: #27ae60; }
.button.aido { background-color: #2980b9; }

#message_box { position: relative; display: flex; align-items: center; justify-content: center; font-size: calc(var(--font-size) * 1.2); font-weight: bold; color: #ffffff; text-align: center; background-color: var(--color-bg-box); border-radius: 12px; border: 1px solid #333; box-shadow: 0 4px 10px rgba(0,0,0,0.3); overflow: hidden; }
#progress_bar { position: absolute; z-index: 0; top: 0; left: 0; height: 100%; background-color: rgba(39, 174, 96, 0.3); transition: width 0.1s linear; }

span.no_wrap { white-space: nowrap; } span.thick { font-weight: 900; }
div.pawn.hidden { visibility: hidden; }
div.pawn.clicked { opacity: 0.8; transform: scale(0.95); box-shadow: 0 0 0 4px rgba(39, 174, 96, 0.5); }
.fade_box.in.hidden, button.button.hidden, input.hidden { display: none !important; }
.button:disabled { opacity: 0.3; cursor: not-allowed; transform: none !important; box-shadow: none !important; filter: grayscale(100%); }

input { width: calc(3 * var(--font-size)); border-radius: 4px; border: 1px solid #555; background: #222; color: #fff; padding: 5px; }
p.developed_by, p.release_date, p.last_updated { font-size: calc(0.6 * var(--font-size)); color: #888; }
p.release_date, p.last_updated { margin-block-start: 0.4em; margin-block-end: 0.4em; }

/* =========================================
   AI 동적 말풍선 (Chat Bubble) 전용 스타일
   ========================================= */
#ai_chat_bubble {
    position: absolute;
    transform: translateX(-50%); /* 계산된 좌측 기준점에서 정중앙 오도록 세팅 */
    background-color: #E50914; /* 강조 네온 레드 */
    color: #ffffff;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: calc(var(--font-size) * 0.8);
    font-weight: 700;
    box-shadow: 0 5px 15px rgba(229, 9, 20, 0.6);
    z-index: 1000; /* 보드판을 가리지 않게 최상위 노출 */
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    white-space: nowrap;
}
#ai_chat_bubble.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-15px); /* 등장할 때 위로 살짝 통통 튀는 애니메이션 */
}
#ai_chat_bubble::after {
    content: '';
    position: absolute;
    top: 100%; /* 말풍선 아랫부분 꼬리 생성 */
    left: 50%;
    margin-left: -8px;
    border-width: 8px 8px 0;
    border-style: solid;
    border-color: #E50914 transparent transparent transparent;
}

@media only screen and (min-width: 768px), (orientation: landscape) {
    .gridcontainer0 { grid-template-rows: min-content var(--board-table-side-length); grid-template-columns: var(--board-table-side-length) calc(95vmin - var(--board-table-side-length)); }
    .gridcontainer2 { display:grid; grid-row-start: 2; grid-column-start: 2; grid-template-columns: 1fr; grid-template-rows: min-content min-content 1fr; }
    .button_container.below { grid-column: unset; flex-direction: column-reverse; justify-content: flex-start; }
}
@media only screen and (min-width: 768px) and (min-height: 768px) {
    .fade_box { top: calc((var(--board-table-side-length) - 7 * var(--long-length)) / 2); left: 0; width: var(--board-table-side-length); height: calc(7 * var(--long-length)); }
}
@media only screen and (max-height: 375px) and (min-width: 568px) and (orientation:landscape) {
    .gridcontainer0 { grid-template-columns: var(--board-table-side-length) calc(105vmin - var(--board-table-side-length)); }
}
@media (hover: hover) {
    #confirm_button, #cancel_button { display: none; }
    div.pawn.shadow:hover { opacity: 0.8; transform: scale(1.1); }
    div.pawn.button, button.ai_level, button.restart_yes_no, button.update { opacity: 0.9; }
    div.pawn.button:hover, button.ai_level:hover, button.restart_yes_no:hover, button.update:hover { opacity: 1; transform: translateY(-2px); }
}

.kakao_ad_area { position: fixed; left: 50%; top: 0; transform: translateX(-50%); width: 320px; height: 50px; display: block; z-index: 100; }
.kakao_ad_area2 { position: fixed; left: 50%; bottom: 0; transform: translateX(-50%); width: 320px; height: 50px; display: block; z-index: 100; }