/* App shell — palette variables come from ../css/style.css */
body.app{background:var(--outer);margin:0;min-height:100vh}
.app-shell{max-width:480px;margin:0 auto;min-height:100vh;background:#fff;display:flex;flex-direction:column;position:relative;box-shadow:0 0 40px rgba(1,27,62,.08)}
.app-top{position:sticky;top:0;z-index:20;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:calc(12px + env(safe-area-inset-top)) 18px 12px;border-bottom:1px solid var(--border)}
.app-top .brand svg{width:40px;height:24px}
.app-top .brand-name{font-size:21px;color:var(--teal-bright)}
.icon-btn{background:none;border:0;color:var(--ink);padding:6px;cursor:pointer}
.icon-btn svg{width:24px;height:24px}
.app-main{flex:1;padding:18px 18px calc(96px + env(safe-area-inset-bottom))}
.view{display:none;animation:fade .2s ease}
.view.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.view h1{font-size:28px;font-weight:800;margin:4px 0 4px}
.view .sub{margin:0 0 16px;font-size:15px}
.dark-card{background:var(--navy-deep);color:#dbe4f0;border-radius:14px;padding:16px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.dark-card strong{display:block;color:#fff;font-size:23px;font-weight:700;letter-spacing:-.01em}
.dark-card small{font-size:13px}
.dark-card svg{width:40px;height:40px;color:#3fd0b5;flex:none}
.bar{height:8px;border-radius:99px;background:rgba(255,255,255,.15);margin-top:10px;overflow:hidden}
.bar i{display:block;height:100%;background:#3fd0b5;border-radius:99px;transition:width .3s}
.w-card{background:#fff;border:1px solid var(--border);border-radius:14px;box-shadow:0 2px 10px rgba(9,24,53,.05);padding:16px;margin-bottom:14px}
.w-card h2{font-size:17px;margin:0}
.w-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:10px}
.pill{background:var(--teal);color:#fff;border-radius:99px;font-size:12px;font-weight:600;padding:4px 10px;white-space:nowrap}
.jstep{display:flex;gap:12px;align-items:flex-start;padding:12px;border:1.5px solid var(--border);border-radius:12px;margin-bottom:10px;cursor:pointer;transition:border-color .15s,background .15s;user-select:none;position:relative}
.jstep input{position:absolute;opacity:0;pointer-events:none}
.jstep .tick{width:24px;height:24px;border-radius:50%;border:2px solid #b9bec6;flex:none;margin-top:1px;display:grid;place-items:center;transition:.15s}
.jstep .tick svg{width:14px;height:14px;color:#fff;opacity:0}
.jstep b{display:block;color:var(--ink);font-size:15px}
.jstep span.d{font-size:13px;color:var(--muted);line-height:1.4;display:block}
.jstep.done{border-color:var(--check);background:var(--mint)}
.jstep.done .tick{background:var(--check);border-color:var(--check)}
.jstep.done .tick svg{opacity:1}
.jstep.next{border-color:var(--teal);box-shadow:0 0 0 3px rgba(3,126,133,.08)}
.jstep:focus-within{outline:2px solid var(--teal);outline-offset:2px}
.tip-cat{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--teal)}
.tip-text{font-size:16.5px;color:var(--ink);line-height:1.5;margin:6px 0 4px;font-weight:500}
.streak{background:var(--mint);border-radius:14px;padding:14px 16px;display:flex;align-items:center;gap:14px;margin-bottom:14px}
.streak .flame{width:40px;height:40px;color:var(--green);flex:none}
.streak .num{font-size:30px;font-weight:800;color:var(--green);line-height:1}
.streak .lbl{font-size:14px;color:var(--ink);font-weight:600}
.streak .lbl small{display:block;font-weight:400;color:var(--muted)}
.streak svg.spark{flex:1;height:44px;color:var(--teal);min-width:0}
.study-btn{width:100%;margin-top:10px;font:600 15px Inter,sans-serif;border-radius:10px;padding:13px;border:0;cursor:pointer;background:var(--teal);color:#fff}
.study-btn[disabled]{background:var(--mint);color:var(--green);cursor:default}
.why{font-size:15px;font-weight:700;color:var(--ink);margin:4px 0 8px}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:14px}
.tile{border:1px solid var(--border);border-radius:10px;padding:10px 8px;display:flex;gap:6px;align-items:center;font-size:11.5px;line-height:1.3;color:var(--ink)}
.tile svg{width:22px;height:22px;flex:none;color:var(--teal)}
.wa-btn{display:flex;align-items:center;gap:14px;background:var(--green);color:#fff;border-radius:12px;padding:13px 18px;text-decoration:none;box-shadow:0 6px 16px rgba(0,138,104,.25)}
.wa-btn svg{width:36px;height:36px;flex:none}
.wa-btn strong{display:block;font-size:18px}
.wa-btn span{font-size:13px;opacity:.92}
.fine{display:flex;justify-content:center;align-items:center;gap:6px;font-size:12.5px;color:var(--muted);margin:10px 0 0;text-align:center}
.fine svg{width:14px;height:14px;flex:none}
.rules{margin:0;padding-left:18px;font-size:14px}
.rules li{margin-bottom:6px}
.link-list{list-style:none;margin:0;padding:0}
.link-list a{display:flex;justify-content:space-between;padding:12px 2px;border-bottom:1px solid var(--border);text-decoration:none;color:var(--ink);font-weight:500}
.link-list li:last-child a{border-bottom:0}
.saved{display:block;text-align:center;font-size:13px;color:var(--green);font-weight:600;margin-top:8px;opacity:0;transition:opacity .2s}
.saved.show{opacity:1}
.tabbar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);width:100%;max-width:480px;background:var(--navy-deep);display:grid;grid-template-columns:repeat(5,1fr);padding:8px 4px calc(10px + env(safe-area-inset-bottom));z-index:30}
.tabbar a{display:flex;flex-direction:column;align-items:center;gap:4px;color:#cfd8e6;text-decoration:none;font-size:11.5px;font-weight:500;padding:4px 0}
.tabbar svg{width:25px;height:25px}
.tabbar a.active{color:#3fd0b5}
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:10px 16px;border-radius:99px;font-size:14px;opacity:0;transition:.25s;pointer-events:none;z-index:40}
.toast.show{opacity:1;transform:translateX(-50%)}
.app-hero{height:220px;border-radius:16px;margin:0 0 16px;background:url(../assets/app-hero.jpg) 55% 74%/cover no-repeat,var(--bg);position:relative;overflow:hidden;display:flex;align-items:flex-start}
.app-hero::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(1,27,62,.88) 0%,rgba(1,27,62,.55) 30%,rgba(1,27,62,0) 52%)}
.app-hero div{position:relative;padding:14px 16px;color:#fff;max-width:100%}
.app-hero span{display:block;font-size:11px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:#3fd0b5}
.app-hero strong{font-size:19px;line-height:1.2;display:block}