.connect4-page{width:100%;max-width:1040px;margin:0 auto;padding:8px 0 calc(28px + env(safe-area-inset-bottom,0px));color:var(--page-text);font-family:Arial,sans-serif;box-sizing:border-box}.connect4-page *{box-sizing:border-box}.connect4-page-head{position:relative;display:flex;align-items:center;justify-content:center;min-height:48px;margin-bottom:18px}.connect4-page-head h1{margin:0;width:100%;text-align:center;font-size:clamp(1.65rem,3vw,2.1rem);line-height:1.15}.connect4-back{position:absolute;left:0;top:2px;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:9px 16px;border-radius:999px;background:#ffd400;color:#111!important;text-decoration:none;font-weight:900;box-shadow:0 4px 13px rgba(0,0,0,.18)}
.connect4-status{min-height:24px;margin:0 0 14px;text-align:center;font-weight:700;opacity:.82}.connect4-login-card,.connect4-lobby-card,.connect4-waiting,.connect4-invite-card,.connect4-game{border:1px solid rgba(127,127,127,.28);border-radius:20px;background:rgba(127,127,127,.055);box-shadow:0 8px 24px rgba(0,0,0,.09)}.connect4-login-card{max-width:620px;margin:24px auto;padding:28px;text-align:center}.connect4-login-icon{font-size:3.2rem}.connect4-login-card h2{margin:10px 0 8px}.connect4-login-card p{line-height:1.55}.connect4-primary-btn,.connect4-secondary-btn{appearance:none;border:0;border-radius:999px;min-height:44px;padding:10px 18px;font:inherit;font-weight:900;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:7px}.connect4-primary-btn{background:#ffd400;color:#111}.connect4-secondary-btn{background:rgba(127,127,127,.16);color:inherit;border:1px solid rgba(127,127,127,.28)}.connect4-primary-btn:hover,.connect4-secondary-btn:hover{filter:brightness(.98);transform:translateY(-1px)}.connect4-primary-btn:disabled,.connect4-secondary-btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.connect4-link-btn{color:inherit!important}
.connect4-lobby{display:flex;flex-direction:column;gap:16px}.connect4-lobby-profile{display:flex;align-items:center;gap:12px;padding:14px 16px;border-radius:17px;background:rgba(127,127,127,.07)}.connect4-lobby-profile>div{display:flex;flex-direction:column;gap:3px}.connect4-lobby-profile strong{font-size:1.05rem}.connect4-lobby-profile span:last-child{opacity:.72}.connect4-avatar{width:46px;height:46px;flex:0 0 46px;border-radius:50%;overflow:hidden;display:inline-flex;align-items:center;justify-content:center;background:linear-gradient(145deg,#e9e9e9,#bcbcbc);color:#111;font-weight:900;border:2px solid rgba(127,127,127,.26)}.connect4-avatar-large{width:54px;height:54px;flex-basis:54px}.connect4-avatar img{width:100%;height:100%;object-fit:cover;display:block}.connect4-lobby-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.connect4-lobby-card{padding:20px}.connect4-lobby-card h2{margin:0 0 8px;font-size:1.2rem}.connect4-lobby-card p{margin:0 0 16px;line-height:1.52}.connect4-friend-card{margin-top:0}.connect4-friend-form label{display:block;font-weight:800;margin-bottom:7px}.connect4-friend-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:8px}.connect4-friend-row>span{font-weight:900;font-size:1.1rem}.connect4-friend-row input{min-width:0;height:46px;border:1px solid rgba(127,127,127,.35);border-radius:12px;padding:0 13px;background:rgba(255,255,255,.82);color:#111;font:inherit;font-size:16px}
.connect4-waiting{max-width:650px;margin:24px auto;padding:34px 24px;text-align:center}.connect4-waiting-symbol{font-size:2.5rem;animation:connect4Pulse 1.1s ease-in-out infinite alternate}.connect4-waiting h2{margin:10px 0 8px}.connect4-waiting p{margin:0 0 18px}.connect4-invite{max-width:700px;margin:22px auto}.connect4-invite-card{padding:22px}.connect4-player-inline{display:flex;align-items:center;gap:12px}.connect4-player-inline>div{display:flex;flex-direction:column;gap:4px}.connect4-invite-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.connect4-game{padding:18px}.connect4-game-headline{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.connect4-game-headline h2{margin:0;font-size:1.2rem}.connect4-info-btn{display:inline-flex;align-items:center;gap:7px;min-height:40px;padding:7px 12px;border-radius:999px;border:1px solid rgba(127,127,127,.28);background:rgba(127,127,127,.08);color:inherit;font:inherit;font-weight:800;cursor:pointer}.connect4-info-symbol{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:#ffd400;color:#111;font-weight:900;font-family:Georgia,serif}.connect4-players{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:12px;align-items:stretch}.connect4-player-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:11px;padding:12px 14px;border:2px solid transparent;border-radius:16px;background:rgba(127,127,127,.075);min-width:0}.connect4-player-card.is-turn{border-color:#ffd400;box-shadow:0 0 0 3px rgba(255,212,0,.12)}.connect4-player-card.is-winner{border-color:#28a745;box-shadow:0 0 0 3px rgba(40,167,69,.12)}.connect4-player-text{display:flex;flex-direction:column;gap:4px;min-width:0}.connect4-player-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.connect4-player-score{font-size:.88rem;opacity:.78}.connect4-disc-dot{width:24px;height:24px;border-radius:50%;box-shadow:inset 0 0 0 2px rgba(0,0,0,.13),0 2px 5px rgba(0,0,0,.18)}.connect4-disc-dot-red{background:#e73333}.connect4-disc-dot-yellow{background:#b8860b}.connect4-vs{align-self:center;font-size:.85rem;font-weight:800;opacity:.62}.connect4-turn{margin:16px 0 12px;text-align:center;font-size:1.05rem;font-weight:900;min-height:24px}.connect4-board-wrap{width:min(100%,720px);margin:0 auto}.connect4-column-controls{display:grid;grid-template-columns:repeat(7,1fr);gap:6px;margin:0 10px 7px}.connect4-column-btn{min-width:0;min-height:34px;border:0;border-radius:9px;background:rgba(127,127,127,.12);color:inherit;font:inherit;font-weight:900;cursor:pointer}.connect4-column-btn.is-selected{background:#ffd400;color:#111}.connect4-column-btn:disabled{opacity:.4;cursor:not-allowed}.connect4-board{--gap:clamp(4px,1vw,8px);display:grid;grid-template-columns:repeat(7,1fr);grid-template-rows:repeat(6,1fr);gap:var(--gap);padding:clamp(8px,1.6vw,14px);background:linear-gradient(180deg,#1976d2,#0b58a4);border-radius:22px;box-shadow:inset 0 -8px 0 rgba(0,0,0,.12),0 9px 24px rgba(0,0,0,.18);outline:none;touch-action:manipulation;user-select:none}.connect4-board:focus-visible{box-shadow:inset 0 -8px 0 rgba(0,0,0,.12),0 0 0 4px rgba(255,212,0,.35),0 9px 24px rgba(0,0,0,.18)}.connect4-cell{position:relative;aspect-ratio:1;border-radius:50%;background:rgba(243,247,252,.94);box-shadow:inset 0 4px 8px rgba(0,0,0,.2);cursor:pointer;overflow:hidden}.connect4-cell::after{content:"";position:absolute;inset:8%;border-radius:50%;background:transparent}.connect4-cell.is-red::after{background:radial-gradient(circle at 35% 28%,#ff7474 0 13%,#e63030 34%,#b71919 100%);box-shadow:0 2px 7px rgba(0,0,0,.3),inset -3px -4px 8px rgba(0,0,0,.16)}.connect4-cell.is-yellow::after{background:radial-gradient(circle at 35% 28%,#ffe680 0 13%,#c99a00 34%,#8a6500 100%);box-shadow:0 2px 7px rgba(0,0,0,.28),inset -3px -4px 8px rgba(0,0,0,.12)}.connect4-cell.is-selected-column{box-shadow:inset 0 4px 8px rgba(0,0,0,.2),0 0 0 2px rgba(255,212,0,.65)}.connect4-cell.is-new::after{animation:connect4Drop .36s cubic-bezier(.18,.72,.22,1)}.connect4-last-action{min-height:24px;margin:13px auto 0;text-align:center;font-weight:700}.connect4-rule-note{margin:8px auto 0;text-align:center;font-size:.9rem;opacity:.76;line-height:1.45}.connect4-finish-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:16px}
.connect4-info-modal{position:fixed;z-index:10050;inset:0;padding:20px;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.58);backdrop-filter:blur(3px)}.connect4-info-modal[hidden]{display:none!important}.connect4-info-card{width:min(100%,720px);max-height:min(86vh,760px);overflow:auto;border-radius:20px;background:#fff;color:#111;padding:22px;box-shadow:0 24px 70px rgba(0,0,0,.4)}.connect4-info-head{display:flex;align-items:center;justify-content:space-between;gap:14px}.connect4-info-head h2{margin:0;font-size:1.3rem}.connect4-info-close{width:42px;height:42px;border:0;border-radius:50%;background:#eee;color:#111;font-size:1.7rem;line-height:1;cursor:pointer}.connect4-info-card p{line-height:1.58}.connect4-info-card h3{margin:20px 0 10px}.connect4-shortcuts{display:grid;gap:9px}.connect4-shortcuts span{display:grid;grid-template-columns:minmax(120px,auto) 1fr;gap:12px;align-items:center;padding:9px 10px;border-radius:12px;background:#f3f3f3}.connect4-shortcuts b{font-size:.92rem}.connect4-shortcuts kbd{display:inline-flex;min-width:28px;min-height:28px;align-items:center;justify-content:center;padding:3px 7px;margin-right:3px;border:1px solid #aaa;border-bottom-width:3px;border-radius:6px;background:#fff;font:700 .84rem Arial,sans-serif}
html.dark-mode .connect4-lobby-card,html.dark-mode .connect4-waiting,html.dark-mode .connect4-invite-card,html.dark-mode .connect4-game,body.dark-mode .connect4-lobby-card,body.dark-mode .connect4-waiting,body.dark-mode .connect4-invite-card,body.dark-mode .connect4-game{background:rgba(11,18,32,.82);border-color:rgba(255,255,255,.2);box-shadow:0 8px 26px rgba(0,0,0,.3)}html.dark-mode .connect4-friend-row input,body.dark-mode .connect4-friend-row input{background:#141b28;color:#fff;border-color:rgba(255,255,255,.24)}html.dark-mode .connect4-info-card,body.dark-mode .connect4-info-card{background:#111827;color:#fff}html.dark-mode .connect4-shortcuts span,body.dark-mode .connect4-shortcuts span{background:#1e293b}html.dark-mode .connect4-shortcuts kbd,body.dark-mode .connect4-shortcuts kbd{background:#0f172a;color:#fff;border-color:#64748b}html.dark-mode .connect4-info-close,body.dark-mode .connect4-info-close{background:#253048;color:#fff}
@keyframes connect4Pulse{from{transform:scale(.96);opacity:.72}to{transform:scale(1.04);opacity:1}}@keyframes connect4Drop{0%{transform:translateY(-520%);opacity:.25}72%{transform:translateY(6%);opacity:1}100%{transform:translateY(0)}}
@media(max-width:760px){.connect4-page{max-width:100%}.connect4-lobby-grid{grid-template-columns:1fr}.connect4-players{grid-template-columns:1fr;gap:8px}.connect4-vs{display:none}.connect4-player-card{padding:10px 12px}.connect4-game{padding:14px}.connect4-board-wrap{width:min(100%,620px)}.connect4-column-controls{gap:4px;margin-left:7px;margin-right:7px}.connect4-column-btn{min-height:31px;padding:3px}.connect4-friend-row{grid-template-columns:auto minmax(0,1fr)}.connect4-friend-row .connect4-secondary-btn{grid-column:1/-1;width:100%}.connect4-shortcuts span{grid-template-columns:1fr;gap:6px}}
@media(max-width:560px){.connect4-page-head{display:flex;flex-direction:column;align-items:stretch;gap:10px;margin-bottom:12px}.connect4-page-head h1{order:1}.connect4-back{position:static;order:2;width:100%}.connect4-status{font-size:.92rem}.connect4-lobby-card{padding:16px}.connect4-lobby-profile{padding:11px 12px}.connect4-primary-btn,.connect4-secondary-btn{width:100%}.connect4-invite-actions{flex-direction:column}.connect4-game{border-radius:16px;padding:10px 7px 14px}.connect4-game-headline{padding:0 4px}.connect4-info-btn{width:auto;min-height:38px;padding:6px 10px}.connect4-players{gap:6px}.connect4-player-card{grid-template-columns:auto minmax(0,1fr) auto;border-radius:13px;padding:8px}.connect4-avatar{width:40px;height:40px;flex-basis:40px}.connect4-player-score{font-size:.8rem}.connect4-disc-dot{width:19px;height:19px}.connect4-turn{margin:12px 0 9px;font-size:.96rem}.connect4-board{--gap:4px;padding:7px;border-radius:15px}.connect4-column-controls{gap:3px;margin:0 6px 5px}.connect4-column-btn{min-height:29px;border-radius:7px;font-size:.84rem}.connect4-last-action{font-size:.9rem}.connect4-rule-note{font-size:.82rem;padding:0 4px}.connect4-finish-actions{flex-direction:column}.connect4-info-modal{padding:10px}.connect4-info-card{padding:16px;border-radius:16px}}
@media(max-width:360px){.connect4-game{padding-left:5px;padding-right:5px}.connect4-board{--gap:3px;padding:5px}.connect4-column-controls{margin-left:4px;margin-right:4px}.connect4-column-btn{font-size:.78rem}.connect4-player-name{font-size:.9rem}.connect4-avatar{width:36px;height:36px;flex-basis:36px}.connect4-disc-dot{display:none}}

/* v2 */
.connect4-lobby{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:stretch}.connect4-lobby-profile{grid-column:1/-1}.connect4-lobby-card{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:22px}.connect4-lobby-card h2{margin:0}.connect4-lobby-card p{margin:0;line-height:1.55}.connect4-lobby-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}.connect4-friend-form{width:100%}.connect4-game-help-row{display:flex;align-items:center;gap:8px}.connect4-voice-btn{display:inline-flex;align-items:center;gap:7px;min-height:40px;padding:7px 12px;border-radius:999px;border:1px solid rgba(127,127,127,.28);background:rgba(127,127,127,.08);color:inherit;font:inherit;font-weight:800;cursor:pointer}.connect4-voice-btn[aria-pressed="true"]{background:#ffd400;color:#111;border-color:#ffd400}.connect4-voice-symbol{font-size:1.05rem;line-height:1}.connect4-coordinate-grid{display:grid;grid-template-columns:28px minmax(0,1fr);grid-template-rows:auto auto;gap:5px 7px;align-items:stretch}.connect4-coordinate-corner{grid-column:1;grid-row:1}.connect4-column-controls{grid-column:2;grid-row:1;margin:0 10px}.connect4-row-labels{grid-column:1;grid-row:2;display:grid;grid-template-rows:repeat(6,1fr);align-items:center;justify-items:center;padding:clamp(8px,1.6vw,14px) 0;font-weight:900}.connect4-row-labels span{display:flex;align-items:center;justify-content:center;height:100%;font-size:.9rem}.connect4-board{grid-column:2;grid-row:2}.connect4-cell{min-width:0}.connect4-speech-live{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
@media(max-width:760px){.connect4-lobby{grid-template-columns:1fr}.connect4-lobby-profile{grid-column:auto}.connect4-lobby-actions{width:100%}.connect4-lobby-actions .connect4-primary-btn,.connect4-lobby-actions .connect4-secondary-btn{flex:1 1 220px}.connect4-coordinate-grid{grid-template-columns:24px minmax(0,1fr);gap:4px 5px}.connect4-column-controls{margin:0 7px}.connect4-row-labels{padding:7px 0}.connect4-row-labels span{font-size:.82rem}}
@media(max-width:560px){.connect4-game-help-row{gap:6px}.connect4-voice-btn{width:40px;min-width:40px;min-height:38px;padding:6px;justify-content:center}.connect4-voice-label{display:none}.connect4-coordinate-grid{grid-template-columns:20px minmax(0,1fr);gap:3px 4px}.connect4-column-controls{margin:0 6px}.connect4-row-labels{padding:7px 0}.connect4-row-labels span{font-size:.76rem}.connect4-lobby-actions{flex-direction:column}.connect4-lobby-actions .connect4-primary-btn,.connect4-lobby-actions .connect4-secondary-btn{flex:auto;width:100%}}
@media(max-width:360px){.connect4-coordinate-grid{grid-template-columns:18px minmax(0,1fr);gap:2px 3px}.connect4-row-labels span{font-size:.7rem}.connect4-column-controls{margin:0 4px}}
.connect4-shortcuts>span>span{display:flex;align-items:center;gap:4px;padding:0;background:transparent!important}.connect4-shortcuts>span>span kbd{margin-right:0}
.connect4-player-card.is-self .connect4-disc-dot{background:#d82020}.connect4-player-card.is-opponent .connect4-disc-dot{background:#b8860b}.connect4-cell.is-blue::after{background:radial-gradient(circle at 35% 28%,#ffe680 0 13%,#c99a00 34%,#8a6500 100%);box-shadow:0 2px 7px rgba(0,0,0,.34),inset -3px -4px 8px rgba(0,0,0,.22)}