body { background-color: #1a1a1a; color: #ccc; font-family: sans-serif; margin: 0; padding: 30px; display: flex; justify-content: center; }
.container { display: flex; gap: 40px; max-width: 1200px; width: 100%; }
.left-panel { flex: 6; min-width: 0; } .right-panel { flex: 4; }
h2 { font-size: 15px; border-bottom: 1px solid #444; padding-bottom: 8px; margin: 20px 0 10px; color: #fff; }

/* === 主题系统 === */
.theme-bw { --bg-color: #000000; --text-color: #ffffff; --glow-color: rgba(255,255,255,0.7); }
.theme-wb { --bg-color: #ffffff; --text-color: #000000; --glow-color: rgba(0,0,0,0.6); }
.theme-br { --bg-color: #000000; --text-color: #cc0000; --glow-color: rgba(204,0,0,0.8); }
.theme-rw { --bg-color: #cc0000; --text-color: #ffffff; --glow-color: rgba(255,255,255,0.9); }
.theme-by { --bg-color: #000000; --text-color: #ff7a00; --glow-color: rgba(255,122,0,0.8); }

.layout-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-bottom: 20px; }
.layout-btn { aspect-ratio: 4/3; background: #000; color: #fff; border: 1px solid #444; cursor: pointer; position: relative; font-family: "Noto Serif TC", serif; overflow: hidden; }
.layout-btn.active { border: 2px solid #ff7a00; }
.layout-btn span { position: absolute; font-weight: 900; line-height: 1; pointer-events: none; white-space: pre-line; }
.layout-btn .sub { font-size: 10px; } .layout-btn .main { font-size: 16px; }

.board-wrapper { width: 100%; position: relative; overflow: hidden; }

/* === 核心：绝对防溢出物理画布 === */
.eva-board {
    width: 1440px; 
    position: absolute;
    top: 0; left: 0;
    transform-origin: top left;
    font-family: "Noto Serif TC", "PMingLiU", serif;
    background-color: var(--bg-color); color: var(--text-color);
    border: 2px solid #333;
    box-sizing: border-box;
    
    --scale: 1;
    --bw: calc(14.4px * var(--scale)); 
    --eg: 6%; 
    --ls: -0.05em;
}

.ratio-4-3 { height: 1080px; --bh: calc(10.8px * var(--scale)); } 
.ratio-16-9 { height: 810px; --bh: calc(8.1px * var(--scale)); } 
.ratio-1-1 { height: 1440px; --bh: calc(14.4px * var(--scale)); } 
.ratio-5-4 { height: 1152px; --bh: calc(11.52px * var(--scale)); } 
.ratio-3-2 { height: 960px; --bh: calc(9.6px * var(--scale)); }

.eva-board .text-layer { 
    position: absolute; font-weight: 900; display: none; z-index: 2; 
    white-space: nowrap; 
    line-height: 0.9;
    letter-spacing: var(--ls); 
}

.eva-board.apply-margin { --eg: 2%; }
.eva-board.apply-tight .text-layer { line-height: 0.78 !important; letter-spacing: -0.1em !important; }
.eva-board.apply-blur { filter: contrast(1.2) brightness(0.9); }

.noise-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0; z-index: 10; pointer-events: none; transition: opacity 0.2s;
}
.eva-board.apply-noise .noise-overlay { opacity: 1; }

/* === 大师级双轴排版 === */
.eva-board[data-layout="layout-1"] .text-c { display:block; top: var(--eg); left: var(--eg); font-size: calc(var(--bh) * 7); writing-mode: vertical-rl; letter-spacing: 0; }
.eva-board[data-layout="layout-1"] .text-a { display:block; top: calc(var(--eg) + 2%); right: 28%; font-size: calc(var(--bh) * 20); writing-mode: vertical-rl; }
.eva-board[data-layout="layout-1"] .text-b { display:block; bottom: var(--eg); left: var(--eg); font-size: calc(var(--bw) * 26); writing-mode: horizontal-tb; }

.eva-board[data-layout="layout-2"] .text-a { display:block; top: var(--eg); left: var(--eg); font-size: calc(var(--bw) * 22); }
.eva-board[data-layout="layout-2"] .text-b { display:block; bottom: var(--eg); right: var(--eg); font-size: calc(var(--bw) * 22); }
.eva-board[data-layout="layout-2"] .text-c { display:block; bottom: var(--eg); left: var(--eg); font-size: calc(var(--bh) * 7); writing-mode: vertical-rl; }

.eva-board[data-layout="layout-3"] .text-c { display:block; top: 25%; left: 50%; transform: translateX(-50%); font-size: calc(var(--bw) * 5); letter-spacing: 0.2em; text-align: center;}
.eva-board[data-layout="layout-3"] .text-a { display:block; top: 55%; left: 50%; transform: translate(-50%, -50%); font-size: calc(var(--bw) * 22); text-align: center;}

.eva-board[data-layout="layout-4"] .text-a { display:block; top: 25%; right: var(--eg); text-align: right; font-size: calc(var(--bw) * 16); }
.eva-board[data-layout="layout-4"] .text-c { display:block; bottom: calc(var(--eg) * 2); right: var(--eg); font-size: calc(var(--bw) * 6); text-align: right;}

.eva-board[data-layout="layout-5"] .text-a { display:block; top: var(--eg); left: 15%; font-size: calc(var(--bh) * 16); writing-mode: vertical-rl;}
.eva-board[data-layout="layout-5"] .text-b { display:block; bottom: var(--eg); left: 40%; font-size: calc(var(--bh) * 16); writing-mode: vertical-rl;}
.eva-board[data-layout="layout-5"] .text-c { display:block; bottom: var(--eg); right: var(--eg); font-size: calc(var(--bh) * 6); writing-mode: vertical-rl; }

.eva-board[data-layout="layout-6"] .text-a { display:block; left: var(--eg); top: var(--eg); font-size: calc(var(--bh) * 18); writing-mode: vertical-rl; }
.eva-board[data-layout="layout-6"] .text-c { display:block; bottom: var(--eg); right: var(--eg); font-size: calc(var(--bw) * 8); text-align: right;}

.eva-board[data-layout="layout-7"] .text-a { display:block; left: 15%; top: var(--eg); font-size: calc(var(--bh) * 22); writing-mode: vertical-rl; }
.eva-board[data-layout="layout-7"] .text-b { display:block; right: 25%; top: 20%; font-size: calc(var(--bh) * 14); writing-mode: vertical-rl; }
.eva-board[data-layout="layout-7"] .text-c { display:block; bottom: var(--eg); left: var(--eg); font-size: calc(var(--bw) * 7); }

.eva-board[data-layout="layout-8"] .text-a { display:block; top: 50%; left: 50%; transform: translate(-50%, -50%); font-size: calc(var(--bw) * 12); border: calc(var(--bw) * 0.8) solid var(--text-color); padding: 0.8em 1.5em; font-family: sans-serif; letter-spacing: 0; text-align: center; }

.eva-board[data-layout="layout-9"] .text-a { display:block; top: 50%; left: var(--eg); transform: translateY(-50%); font-size: calc(var(--bh) * 16); writing-mode: vertical-rl; }

.eva-board[data-layout="layout-10"] .text-a { display:block; top: 60%; left: 50%; transform: translate(-50%, -50%); font-size: calc(var(--bw) * 12); text-align: center; }
.eva-board[data-layout="layout-10"] .text-c { display:block; top: var(--eg); left: 50%; transform: translateX(-50%); text-align: center; font-size: calc(var(--bw) * 6); }

.eva-board[data-layout="layout-11"] .text-a { display:block; bottom: var(--eg); left: 50%; transform: translateX(-50%); text-align: center; font-size: calc(var(--bw) * 22); }
.eva-board[data-layout="layout-11"] .text-c { display:block; top: var(--eg); right: var(--eg); font-size: calc(var(--bw) * 7); text-align: right;}

.eva-board[data-layout="layout-12"] .text-a { display:block; right: var(--eg); bottom: var(--eg); font-size: calc(var(--bw) * 18); text-align: right; }
.eva-board[data-layout="layout-12"] .text-c { display:block; left: var(--eg); top: var(--eg); font-size: calc(var(--bh) * 7); writing-mode: vertical-rl; }

.eva-board[data-layout="layout-13"] .text-a { display:block; top: var(--eg); left: var(--eg); font-size: calc(var(--bw) * 10); font-family: serif; text-align: left; line-height: 1.1; letter-spacing:0; }
.eva-board[data-layout="layout-13"] .text-b { display:block; bottom: var(--eg); right: var(--eg); font-size: calc(var(--bw) * 10); font-family: serif; text-align: right; letter-spacing:0; }

.eva-board[data-layout="layout-14"] .text-c { display:block; top: 35%; left: 50%; transform: translateX(-50%); text-align: center; font-size: calc(var(--bw) * 6); font-family: serif; letter-spacing:0; }
.eva-board[data-layout="layout-14"] .text-a { display:block; top: 55%; left: 50%; transform: translate(-50%, -50%); text-align: center; font-size: calc(var(--bw) * 9.5); font-family: serif; letter-spacing:0; }

.eva-board[data-layout="layout-15"] .text-a { display:block; top: var(--eg); left: var(--eg); font-size: calc(var(--bw) * 14); }
.eva-board[data-layout="layout-15"] .text-b { display:block; bottom: var(--eg); left: 15%; font-size: calc(var(--bw) * 14); }
.eva-board[data-layout="layout-15"] .text-c { display:block; right: var(--eg); top: 45%; font-size: calc(var(--bw) * 6); }

.eva-board[data-layout="layout-16"] .text-a { display:block; top: 15%; left: 50%; transform: translateX(-50%); text-align: center; font-size: calc(var(--bw) * 18); }
.eva-board[data-layout="layout-16"] .text-b { display:block; top: 50%; left: 50%; transform: translateX(-50%); text-align: center; font-size: calc(var(--bw) * 18); }
.eva-board[data-layout="layout-16"] .text-c { display:block; bottom: var(--eg); right: var(--eg); font-size: calc(var(--bw) * 8); text-align: right;}

/* === UI 控件 === */
label { display: block; font-size: 12px; color: #888; margin-bottom: 5px; }
textarea, select { width: 100%; padding: 10px; margin-bottom: 15px; background: #222; color: #fff; border: 1px solid #444; font-size: 14px; box-sizing: border-box; resize: vertical; }
textarea:focus { border-color: #ff7a00; outline: none; }
.btn-primary { background: #900; color: #fff; border: none; padding: 12px; width: 100%; cursor: pointer; font-size: 16px; margin-bottom: 20px;}
.toggle-group { display: flex; gap: 5px; margin-bottom: 15px; }
.toggle-btn { background: #333; color: #aaa; border: 1px solid #555; padding: 8px; cursor: pointer; flex: 1; font-size: 14px;}
.toggle-btn.active { background: #fff; color: #000; font-weight: bold; }
.effects-toggles { display: flex; flex-direction: column; gap: 12px; background: #222; padding: 15px; border: 1px solid #444;}
.effect-control { display: flex; align-items: center; justify-content: space-between; }
.effect-label { cursor: pointer; font-size: 14px; margin-bottom: 0; display:flex; align-items:center;}
.effect-label input { margin-right: 8px;}
.stepper { display: flex; align-items: center; gap: 6px; background: #111; border-radius: 4px; padding: 2px 6px;}
.stepper button { background: #444; border: none; color: #fff; cursor: pointer; width: 24px; height: 24px; border-radius: 3px; font-weight: bold;}
.stepper button:disabled { opacity: 0.3; cursor: not-allowed; }
.stepper button:active:not(:disabled) { background: #ff7a00; }