:root{--bg: #f5efe4;--bg-accent: #e7dcc7;--panel: rgba(254, 251, 245, .88);--panel-strong: #fff9f0;--line: rgba(65, 46, 28, .14);--text: #24180f;--muted: #6f5b47;--primary: #d8643c;--primary-strong: #b94a24;--secondary: #154f63;--secondary-strong: #103949;--shadow: 0 20px 60px rgba(74, 48, 24, .14);font-family:Space Grotesk,sans-serif;color:var(--text);background:radial-gradient(circle at top left,rgba(216,100,60,.18),transparent 30%),radial-gradient(circle at bottom right,rgba(21,79,99,.16),transparent 30%),linear-gradient(135deg,var(--bg),#efe5d6 60%,var(--bg-accent))}*{box-sizing:border-box}html,body{min-height:100%;margin:0}body{min-height:100vh}button,input,select{font:inherit}button{cursor:pointer}#app{min-height:100vh}.screen{min-height:100vh;padding:32px 20px}.shell{width:min(1100px,100%);margin:0 auto;display:grid;align-content:center;gap:24px}.panel{border:1px solid var(--line);border-radius:28px;padding:28px;background:var(--panel);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);box-shadow:var(--shadow)}.hero-panel{overflow:hidden;position:relative}.hero-panel:after{content:"";position:absolute;inset:auto -80px -120px auto;width:260px;height:260px;border-radius:50%;background:#d8643c1f}.eyebrow{margin:0 0 8px;letter-spacing:.16em;text-transform:uppercase;font-size:.75rem;color:var(--muted)}.hero-title,h2{margin:0;font-family:Chakra Petch,sans-serif;line-height:.95}.hero-title{font-size:clamp(3.5rem,8vw,6.25rem);max-width:8ch}.hero-copy{margin:18px 0 0;max-width:52ch;line-height:1.6;color:var(--muted)}.hero-actions,.action-stack{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.button{border:0;border-radius:999px;padding:14px 22px;transition:transform .18s ease,background .18s ease,color .18s ease}.button:hover{transform:translateY(-1px)}.button-primary{background:var(--primary);color:#fff}.button-primary:hover{background:var(--primary-strong)}.button-secondary{background:var(--secondary);color:#fff}.button-secondary:hover{background:var(--secondary-strong)}.button-ghost{background:transparent;color:var(--text);border:1px solid var(--line)}.info-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.stats-panel{display:grid;gap:20px}.stats-panel-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.stats-grid{display:grid;gap:16px;grid-template-columns:repeat(4,minmax(0,1fr))}.info-label{margin:0 0 8px;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.info-value{margin:0;font-size:1.25rem;font-weight:700}.settings-panel,.side-panel,.board-panel{animation:rise .26s ease}.panel-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:20px}.settings-form{display:grid;gap:18px}.field{display:grid;gap:8px}.field span{font-weight:600}.field input,.field select{width:100%;border:1px solid var(--line);border-radius:16px;padding:14px 16px;background:var(--panel-strong)}.field input[type=range]{padding:0}.checkbox-field{display:flex;align-items:center;gap:10px}.checkbox-field input{width:18px;height:18px}.range-field{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px}.range-field output{min-width:3ch;font-weight:700;color:var(--secondary);text-align:right}.game-layout{display:grid;gap:24px;grid-template-columns:320px minmax(0,1fr)}.side-panel{align-self:start}.status-text{margin:16px 0 0;color:var(--muted)}.match-target{margin:14px 0 0;font-size:.92rem;font-weight:600;color:var(--muted)}.mode-pill{display:inline-flex;margin:16px 0 0;padding:8px 12px;border-radius:999px;background:#154f631a;color:var(--secondary);font-size:.85rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em}.score-card{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.score-row{display:flex;align-items:center;justify-content:space-between;margin-top:12px}.board-panel{display:grid;place-items:center;min-height:520px;position:relative}.board{width:min(100%,520px);display:grid;gap:12px;grid-template-columns:repeat(3,minmax(80px,1fr))}.cell{aspect-ratio:1;border:1px solid var(--line);border-radius:24px;background:var(--panel-strong);font-family:Chakra Petch,sans-serif;font-size:clamp(2.75rem,10vw,5rem);font-weight:700;color:var(--text);transition:transform .16s ease,background .22s ease,color .22s ease,border-color .22s ease}.cell:hover:not(:disabled){transform:translateY(-2px) scale(1.02)}.cell[data-symbol=X]{color:var(--primary-strong)}.cell[data-symbol=O]{color:var(--secondary)}.cell:disabled{cursor:default;opacity:1}.cell-filled{animation:stamp .18s ease}.winning-cell{color:#fff;background:linear-gradient(135deg,var(--primary),var(--secondary));animation:celebrate .85s ease-in-out infinite alternate}.round-modal-overlay{position:fixed;inset:0;display:grid;place-items:center;padding:20px;background:#24180f70;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);animation:fade-in .22s ease}.round-modal{width:min(560px,100%);border:1px solid var(--line);border-radius:28px;padding:28px;background:var(--panel-strong);box-shadow:var(--shadow);animation:rise .22s ease}.modal-copy{margin:14px 0 0;color:var(--muted);line-height:1.6}.modal-stats{display:grid;gap:14px;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:20px;padding:18px;border-radius:20px;background:#154f630f}.modal-stats span{display:block;margin-bottom:6px;font-size:.82rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}.modal-stats strong{font-size:1.2rem}.is-hidden{display:none}@keyframes rise{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes stamp{0%{transform:scale(.84)}to{transform:scale(1)}}@keyframes celebrate{0%{box-shadow:0 0 #d8643c00}to{box-shadow:0 0 24px #d8643c47}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@media(max-width:860px){.game-layout{grid-template-columns:1fr}.board-panel{min-height:auto}.stats-grid,.modal-stats{grid-template-columns:1fr 1fr}}@media(max-width:520px){.screen{padding:18px 14px}.panel{padding:22px;border-radius:24px}.hero-title{font-size:clamp(2.8rem,14vw,4rem)}.stats-panel-header{flex-direction:column;align-items:stretch}.stats-grid,.modal-stats{grid-template-columns:1fr}}