*{margin:0;padding:0;box-sizing:border-box;}
html,body{height:100%;}
body{font-family:system-ui,-apple-system,sans-serif;background:#111;color:#eee;}
.mode-btn{padding:.85rem .6rem;border-radius:12px;border:.5px solid #333;background:#1a1a1a;color:#eee;cursor:pointer;text-align:center;transition:background .15s;width:100%;}
.mode-btn:hover{background:#252525;}
.lb{padding:3px 14px;font-size:13px;border-radius:8px;border:1.5px solid transparent;background:#1a1a1a;color:#999;cursor:pointer;transition:all .15s;white-space:nowrap;}
.lb:hover{background:#222;}
.lb.active{border-color:#eee;color:#eee;font-weight:500;}
.lb-flag{display:inline-flex;align-items:center;gap:7px;}
.lbflag{height:14px;width:auto;border-radius:2px;box-shadow:0 0 0 1px rgba(0,0,0,.25);}
.tp{display:flex;align-items:center;gap:6px;padding:4px 10px;border-radius:20px;border:1.5px solid transparent;background:#1a1a1a;cursor:pointer;font-size:12px;color:#999;transition:all .15s;white-space:nowrap;}
.tp.active{border-color:#eee;color:#eee;font-weight:500;}
.dot{width:12px;height:12px;border-radius:50%;flex-shrink:0;}
.os{display:flex;flex-direction:column;gap:6px;}
.ol{font-size:11px;color:#888;text-transform:uppercase;letter-spacing:.06em;}
.cb{display:flex;align-items:center;gap:5px;cursor:pointer;font-size:13px;color:#ccc;user-select:none;}
.cb input{accent-color:#1D9E75;width:15px;height:15px;cursor:pointer;}
.ctag{display:inline-flex;align-items:center;gap:3px;padding:2px 8px;border-radius:6px;font-size:11px;cursor:pointer;border:1px solid #333;background:#1a1a1a;color:#999;transition:all .12s;user-select:none;}
.ctag.on{border-color:#1D9E75;background:#0d2e20;color:#4eca8a;}
.ctag:hover{background:#222;}
.custom-section{padding:12px 16px;border:1px solid #333;border-radius:10px;background:#151515;}
.cnum{width:60px;padding:4px 8px;font-size:14px;border-radius:6px;border:1px solid #444;background:#1a1a1a;color:#eee;text-align:center;}
.start-btn{padding:10px 28px;background:#1D9E75;border:none;color:#fff;border-radius:10px;font-size:15px;font-weight:500;cursor:pointer;transition:background .15s;}
.start-btn:hover{background:#17855f;}
.start-btn:disabled{opacity:.4;cursor:default;}

/* ── OPTIONS GRID (shared home + in-game) ── */
.opts-grid{display:flex;flex-wrap:wrap;gap:1.1rem 1.6rem;align-items:flex-start;}
.opt-group{display:flex;flex-direction:column;gap:7px;}
.opt-label{font-size:11px;color:#888;text-transform:uppercase;letter-spacing:.06em;}
.opt-row{display:flex;gap:6px;flex-wrap:wrap;}

/* ── ACCOUNT / AUTH ── */
.home-account{position:absolute;top:16px;right:18px;z-index:5;display:flex;align-items:center;gap:10px;}
.home-acct-name{font-size:13px;color:#9fb2c4;}
.home-acct-name strong{color:#dce6f0;font-weight:600;}
.home-acct-btn{font-size:13px;padding:7px 16px;border-radius:9px;cursor:pointer;color:#dce6f0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);transition:background .15s;}
.home-acct-btn:hover{background:rgba(255,255,255,.12);}
.auth-modal{position:fixed;inset:0;z-index:10000;display:flex;align-items:center;justify-content:center;background:rgba(4,8,14,.66);backdrop-filter:blur(4px);}
.auth-box{position:relative;width:92%;max-width:380px;padding:1.75rem 1.5rem 1.5rem;border-radius:18px;background:#101826;border:1px solid rgba(255,255,255,.1);box-shadow:0 20px 60px rgba(0,0,0,.5);display:flex;flex-direction:column;gap:12px;animation:homeFade .25s ease;}
.auth-close{position:absolute;top:10px;right:12px;width:30px;height:30px;border:none;background:transparent;color:#8aa;font-size:22px;line-height:1;cursor:pointer;border-radius:8px;}
.auth-close:hover{background:rgba(255,255,255,.08);color:#fff;}
.auth-title{font-size:20px;font-weight:600;color:#eef4fb;margin:0 0 .25rem;text-align:center;}
.auth-input{width:100%;padding:11px 14px;font-size:15px;border-radius:10px;border:1.5px solid #2a3a4e;background:#0a1320;color:#eef4fb;outline:none;box-sizing:border-box;transition:border-color .15s;}
.auth-input:focus{border-color:#2f8fd0;}
.auth-error{font-size:13px;color:#ff7a6d;min-height:18px;text-align:center;}
.auth-submit{padding:12px;font-size:16px;font-weight:600;color:#fff;border:none;border-radius:11px;cursor:pointer;background:linear-gradient(135deg,#2f8fd0,#1f6fae);transition:transform .12s;}
.auth-submit:hover{transform:translateY(-1px);}
.auth-submit:disabled{opacity:.5;cursor:default;transform:none;}
.auth-switch{background:none;border:none;color:#7fb0d8;font-size:13px;cursor:pointer;padding:4px;}
.auth-switch:hover{text-decoration:underline;}
.auth-show{display:flex;align-items:center;gap:7px;font-size:13px;color:#9fb2c4;cursor:pointer;user-select:none;margin-top:-4px;}
.auth-show input{accent-color:#2f8fd0;width:15px;height:15px;cursor:pointer;}
.auth-link{background:none;border:none;color:#7fb0d8;font-size:13px;cursor:pointer;padding:0;text-align:left;align-self:flex-start;}
.auth-link:hover{text-decoration:underline;}
.auth-info{font-size:13px;color:#4eca8a;min-height:0;text-align:center;}
.auth-sep{display:flex;align-items:center;gap:10px;color:#5a6b7e;font-size:12px;margin:2px 0;}
.auth-sep::before,.auth-sep::after{content:"";flex:1;height:1px;background:rgba(255,255,255,.12);}
.auth-google{display:flex;align-items:center;justify-content:center;gap:10px;padding:11px;font-size:15px;font-weight:500;color:#1a1a1a;background:#fff;border:none;border-radius:11px;cursor:pointer;transition:opacity .15s;}
.auth-google:hover{opacity:.9;}

/* ── HOME SCREEN ── */
#home-screen{height:100vh;flex-direction:column;align-items:center;justify-content:center;position:relative;overflow:hidden;}
.home-bg{position:absolute;inset:0;background:radial-gradient(ellipse 80% 60% at 50% 30%,#16314f 0%,#0d1b2e 45%,#070d18 100%);z-index:0;}
.home-bg::after{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 20% 35%,rgba(80,140,200,.10),transparent 25%),radial-gradient(circle at 80% 65%,rgba(60,180,160,.10),transparent 25%);}
.home-inner{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;text-align:center;padding:2rem 1.25rem;max-width:720px;width:100%;animation:homeFade .6s ease;}
@keyframes homeFade{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:none;}}
.home-globe{font-size:64px;line-height:1;margin-bottom:1rem;filter:drop-shadow(0 6px 20px rgba(0,0,0,.5));animation:globeFloat 5s ease-in-out infinite;}
@keyframes globeFloat{0%,100%{transform:translateY(0);}50%{transform:translateY(-10px);}}
.home-title{font-size:clamp(30px,6vw,46px);font-weight:600;letter-spacing:-.02em;margin:0 0 .6rem;background:linear-gradient(120deg,#eef4fb,#b9d4ee 60%,#7fb0d8);-webkit-background-clip:text;background-clip:text;color:transparent;}
.home-sub{font-size:15px;color:#9fb2c4;max-width:460px;margin:0 0 2rem;line-height:1.5;}
.home-play{padding:14px 56px;font-size:18px;font-weight:600;color:#fff;border:none;border-radius:14px;cursor:pointer;background:linear-gradient(135deg,#2f8fd0,#1f6fae);box-shadow:0 8px 28px rgba(31,111,174,.45);transition:transform .15s,box-shadow .15s;}
.home-play:hover{transform:translateY(-2px);box-shadow:0 12px 34px rgba(31,111,174,.6);}
.home-play:active{transform:translateY(0);}
.home-options-btn{margin-top:1rem;padding:10px 32px;font-size:15px;font-weight:500;color:#cfe0f0;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.15);border-radius:12px;cursor:pointer;transition:background .15s,transform .15s;}
.home-options-btn:hover{background:rgba(255,255,255,.12);transform:translateY(-1px);}
.opts-box{max-width:460px;text-align:left;}
.opts-box .opts-grid{gap:1.1rem 1.6rem;}

/* ── GAMES PAGE (snap scroll) ── */
.games-scroll{height:100vh;overflow-y:auto;scroll-snap-type:y mandatory;scroll-behavior:smooth;position:relative;}
.games-scroll::-webkit-scrollbar{width:0;}
.gs-topbar{position:fixed;top:0;left:0;right:0;z-index:30;display:flex;padding:.85rem 1rem;pointer-events:none;}
.gs-home-btn{pointer-events:auto;font-size:13px;padding:7px 14px;background:rgba(20,28,40,.7);border:1px solid rgba(255,255,255,.15);color:#dce6f0;border-radius:9px;cursor:pointer;backdrop-filter:blur(6px);transition:background .15s;}
.gs-home-btn:hover{background:rgba(40,55,75,.85);}
.gs-nav{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:30;display:flex;flex-direction:column;gap:12px;}
.gs-dot{width:11px;height:11px;border-radius:50%;border:2px solid rgba(255,255,255,.5);background:transparent;cursor:pointer;padding:0;transition:all .2s;}
.gs-dot.active{background:#fff;border-color:#fff;transform:scale(1.15);}
.gs-dot:hover{border-color:#fff;}

.game-section{height:100vh;scroll-snap-align:start;position:relative;display:flex;align-items:center;justify-content:center;overflow:hidden;}
.gs-bg{position:absolute;inset:0;z-index:0;}
.gs-content{position:relative;z-index:1;width:100%;max-width:680px;padding:2rem 1.5rem;text-align:center;animation:secFade .5s ease;max-height:calc(100vh - 80px);overflow-y:auto;}
@keyframes secFade{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}
.gs-icon{font-size:46px;line-height:1;margin-bottom:.5rem;filter:drop-shadow(0 4px 12px rgba(0,0,0,.4));}
.gs-head{font-size:clamp(26px,5vw,38px);font-weight:600;letter-spacing:-.01em;margin:0 0 .4rem;color:#fff;}
.gs-sub{font-size:14px;margin:0 auto 1.75rem;max-width:440px;line-height:1.5;opacity:.85;}
.gs-grid{display:grid;gap:10px;}
.gs-grid-map{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));}
.gs-grid-lake,.gs-grid-river,.gs-grid-city,.gs-grid-pin{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));}
.gs-grid-flag{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));}
.gs-card{display:flex;flex-direction:column;gap:3px;padding:.85rem .6rem;border-radius:12px;cursor:pointer;text-align:center;transition:transform .14s,background .14s,border-color .14s;border:1px solid var(--cardBorder);background:var(--cardBg);color:#fff;}
.gs-card:hover{transform:translateY(-3px);background:var(--cardHov);border-color:var(--accent);}
.gs-card-t{font-weight:600;font-size:14px;}
.gs-card-s{font-size:12px;opacity:.7;}
.gs-card-best{margin-top:3px;font-size:11px;font-weight:600;color:var(--accent);}
.gs-scroll-hint{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);font-size:12px;opacity:.6;z-index:1;animation:hintBob 2s ease-in-out infinite;}
@keyframes hintBob{0%,100%{transform:translateX(-50%) translateY(0);}50%{transform:translateX(-50%) translateY(5px);}}

/* Section colour schemes */
.gs-map{--accent:#e0c896;}
.gs-bg-map{background:radial-gradient(ellipse 90% 70% at 50% 40%,#163a5f,#0c2138 55%,#081627);}
.gs-map .gs-content{color:#cfe0f0;}
.gs-map{--cardBg:rgba(224,200,150,.08);--cardBorder:rgba(224,200,150,.18);--cardHov:rgba(224,200,150,.16);}

.gs-lake{--accent:#4fd6c4;}
.gs-bg-lake{background:radial-gradient(ellipse 90% 70% at 50% 45%,#0a4148,#062b30 55%,#031a1d);}
.gs-lake .gs-content{color:#bfeae4;}
.gs-lake{--cardBg:rgba(79,214,196,.08);--cardBorder:rgba(79,214,196,.18);--cardHov:rgba(79,214,196,.16);}

.gs-river{--accent:#5aa9e0;}
.gs-bg-river{background:radial-gradient(ellipse 90% 70% at 50% 45%,#103a52,#0a2638 55%,#06151f);}
.gs-river .gs-content{color:#c4e0f2;}
.gs-river{--cardBg:rgba(90,169,224,.08);--cardBorder:rgba(90,169,224,.18);--cardHov:rgba(90,169,224,.16);}

.gs-city{--accent:#f0b860;}
.gs-bg-city{background:radial-gradient(ellipse 90% 70% at 50% 45%,#3a2e10,#261d08 55%,#171005);}
.gs-city .gs-content{color:#f0e0c0;}
.gs-city{--cardBg:rgba(240,184,96,.08);--cardBorder:rgba(240,184,96,.18);--cardHov:rgba(240,184,96,.16);}

.gs-pin{--accent:#e25a5a;}
.gs-bg-pin{background:radial-gradient(ellipse 90% 70% at 50% 45%,#3a1414,#2a0e0e 55%,#1a0808);}
.gs-pin .gs-content{color:#f0cccc;}
.gs-pin{--cardBg:rgba(226,90,90,.08);--cardBorder:rgba(226,90,90,.18);--cardHov:rgba(226,90,90,.16);}

.pin-cursor{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 24 24'%3E%3Cpath d='M12 2C8 2 5 5 5 9c0 5 7 13 7 13s7-8 7-13c0-4-3-7-7-7z' fill='%23e23a2a' stroke='white' stroke-width='1.5'/%3E%3Ccircle cx='12' cy='9' r='2.5' fill='white'/%3E%3C/svg%3E") 14 26, crosshair;}

.gs-flag{--accent:#d98ad0;}
.gs-bg-flag{background:radial-gradient(ellipse 90% 70% at 50% 45%,#33204a,#231634 55%,#160d22);}
.gs-flag .gs-content{color:#e6d2ea;}
.gs-flag{--cardBg:rgba(217,138,208,.08);--cardBorder:rgba(217,138,208,.18);--cardHov:rgba(217,138,208,.16);}