/* Gym BZA filesharing – Design (hell, glasig, Apple-ähnlich, iPad-optimiert) */

:root {
    --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
            "Segoe UI", Inter, Roboto, "Helvetica Neue", Arial, sans-serif;
    --ink: #1c1c1e;
    --ink2: #6e6e73;
    --accent: #0a84ff;
    --accent2: #5e5ce6;
    --danger: #ff3b30;
    --ok: #34c759;
    --glassbg: rgba(255, 255, 255, 0.66);
    --glassbrd: rgba(255, 255, 255, 0.75);
    --radius: 22px;
    --shadow: 0 12px 40px rgba(30, 40, 90, 0.10), 0 2px 8px rgba(30, 40, 90, 0.06);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
    margin: 0;
    font-family: var(--font);
    color: var(--ink);
    background: #f2f5fa;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}
.bgdeco {
    position: fixed; inset: 0; z-index: -1; pointer-events: none;
    background:
        radial-gradient(900px 600px at 12% -8%, rgba(10, 132, 255, 0.16), transparent 60%),
        radial-gradient(800px 600px at 95% 8%, rgba(94, 92, 230, 0.14), transparent 60%),
        radial-gradient(900px 700px at 55% 110%, rgba(52, 199, 89, 0.10), transparent 60%),
        linear-gradient(180deg, #f6f9ff 0%, #eef2f9 100%);
}
.wrap {
    max-width: 1240px;
    margin: 0 auto;
    padding: clamp(16px, 3vw, 36px);
}
body.center .wrap {
    min-height: calc(100vh - 60px);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
}
.foot {
    text-align: center; color: #9a9aa2;
    font-size: 13px; padding: 18px 0 26px;
    letter-spacing: 0.02em;
}

/* ---------- Glass & Karten ---------- */
.glass {
    background: var(--glassbg);
    -webkit-backdrop-filter: blur(22px) saturate(1.6);
    backdrop-filter: blur(22px) saturate(1.6);
    border: 1px solid var(--glassbrd);
    box-shadow: var(--shadow);
    border-radius: var(--radius);
}
.card { padding: clamp(20px, 3vw, 34px); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font: 600 16px/1 var(--font);
    padding: 13px 20px;
    min-height: 48px;
    border-radius: 14px;
    border: 0; cursor: pointer;
    text-decoration: none; color: var(--ink);
    background: rgba(255, 255, 255, 0.7);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.06);
    transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    white-space: nowrap;
}
.btn:active { transform: scale(0.965); }
.btn.primary {
    color: #fff;
    background: linear-gradient(180deg, #2f97ff, var(--accent));
    box-shadow: 0 8px 20px rgba(10, 132, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}
.btn.primary:hover { filter: brightness(1.05); }
.btn.ghost {
    background: rgba(255, 255, 255, 0.55);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}
.btn.ghost:hover { background: rgba(255, 255, 255, 0.85); }
.btn.danger {
    color: #fff;
    background: linear-gradient(180deg, #ff5b52, var(--danger));
    box-shadow: 0 6px 16px rgba(255, 59, 48, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn.big { width: 100%; font-size: 18px; min-height: 56px; border-radius: 16px; }
.btn.collect {
    width: 100%;
    margin-top: 18px;
    font-size: clamp(17px, 1.6vw, 21px);
    min-height: 60px;
    border-radius: 18px;
    color: #fff;
    background: linear-gradient(135deg, #7d7aff, var(--accent2));
    box-shadow: 0 10px 26px rgba(94, 92, 230, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

/* ---------- Kopfzeile ---------- */
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    gap: 14px; flex-wrap: wrap;
    margin-bottom: clamp(18px, 3vw, 30px);
}
.brand {
    font-size: clamp(18px, 2vw, 22px); font-weight: 700; letter-spacing: -0.01em;
    display: flex; align-items: center; gap: 10px;
}
.brand.small { font-size: 15px; color: var(--ink2); font-weight: 600; }
.brandmark { font-size: 1.2em; }
.topnav { display: flex; gap: 10px; }
.adminchip {
    font-size: 12px; font-weight: 700; color: #fff;
    background: linear-gradient(135deg, #7d7aff, var(--accent2));
    padding: 4px 10px; border-radius: 999px; letter-spacing: 0.04em;
}
.pagetitle {
    font-size: clamp(26px, 3.4vw, 40px);
    font-weight: 800; letter-spacing: -0.02em;
    margin: 6px 0 22px;
}
.paneltitle {
    font-size: clamp(19px, 2vw, 24px); font-weight: 700;
    margin: 0 0 14px; display: flex; align-items: center; gap: 10px;
}
.count {
    font-size: 13px; font-weight: 700; color: var(--accent);
    background: rgba(10, 132, 255, 0.12);
    padding: 3px 10px; border-radius: 999px;
}

/* ---------- Kacheln (Klassenübersicht) ---------- */
.tiles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: clamp(14px, 2vw, 22px);
}
.tile {
    display: flex; flex-direction: column; gap: 8px;
    padding: 26px 24px;
    min-height: 150px;
    text-decoration: none; color: var(--ink);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.tile:hover { transform: translateY(-3px); box-shadow: 0 18px 50px rgba(30, 40, 90, 0.16); }
.tile:active { transform: scale(0.98); }
.tilename {
    font-size: clamp(24px, 2.6vw, 32px);
    font-weight: 800; letter-spacing: -0.02em;
    margin-top: auto;
    overflow-wrap: anywhere;
}
.tilemeta { color: var(--ink2); font-size: 14px; font-weight: 500; }
.tiletype {
    align-self: flex-start;
    font-size: 12px; font-weight: 700; letter-spacing: 0.05em;
    padding: 4px 11px; border-radius: 999px; text-transform: uppercase;
}
.tk { color: #0a5ad4; background: rgba(10, 132, 255, 0.14); }
.tc { color: #4a48c4; background: rgba(94, 92, 230, 0.14); }

/* ---------- Tafelansicht ---------- */
.boardgrid {
    display: grid;
    grid-template-columns: minmax(320px, 460px) 1fr;
    gap: clamp(16px, 2.5vw, 28px);
    align-items: start;
}
@media (max-width: 900px) { .boardgrid { grid-template-columns: 1fr; } }
.qrpanel { text-align: center; position: sticky; top: 18px; }
.qrlabel { color: var(--ink2); font-weight: 600; font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; }
.qrcourse {
    font-size: clamp(28px, 3vw, 40px);
    font-weight: 800; letter-spacing: -0.02em;
    margin: 4px 0 16px;
    overflow-wrap: anywhere;
}
.bigqr {
    width: min(100%, 380px);
    aspect-ratio: 1; margin: 0 auto;
    background: #fff;
    border-radius: 20px;
    padding: 14px;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.05);
    cursor: zoom-in;
}
.bigqr svg { width: 100%; height: 100%; display: block; }
.qrcaption { color: var(--ink2); font-size: 15px; margin: 14px 0 0; }

/* ---------- Dateilisten ---------- */
.filelist { display: flex; flex-direction: column; gap: 12px; }
.filerow {
    display: flex; align-items: center; gap: 14px;
    padding: 14px 18px;
    border-radius: 18px;
}
.fileicon { font-size: 30px; }
.fileinfo { flex: 1; min-width: 0; }
.filename {
    font-weight: 700; font-size: clamp(16px, 1.5vw, 18px);
    overflow-wrap: anywhere;
}
.filemeta { color: var(--ink2); font-size: 13px; margin-top: 2px; }
.fileactions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
@media (max-width: 640px) {
    .filerow { flex-wrap: wrap; }
    .fileactions { width: 100%; justify-content: stretch; }
    .fileactions .btn { flex: 1; }
}
.filelist.compact .btn { padding: 10px 14px; min-height: 42px; font-size: 14px; }

/* ---------- Schüleransicht ---------- */
.studenthead { text-align: center; margin: 8px 0 24px; }
.coursebadge {
    display: inline-block; margin-top: 12px;
    font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase;
    color: #0a5ad4; background: rgba(10, 132, 255, 0.14);
    padding: 5px 14px; border-radius: 999px;
}
.studenttitle {
    font-size: clamp(30px, 6vw, 44px);
    font-weight: 800; letter-spacing: -0.02em;
    margin: 8px 0 0;
}
.studentbody .wrap { max-width: 760px; }

/* ---------- Formulare ---------- */
.formcard, .donecard, .logincard, .denycard { max-width: 560px; margin: 0 auto; width: 100%; }
.formtitle { margin: 0 0 18px; font-size: 24px; font-weight: 800; }
.field { display: block; margin-bottom: 18px; }
.fieldlabel { display: block; font-weight: 700; font-size: 15px; margin-bottom: 8px; }
.fieldlabel em { color: var(--danger); font-style: normal; }
.opt { color: var(--ink2); font-weight: 500; }
.fieldhint { display: block; color: var(--ink2); font-size: 13px; margin-top: 8px; line-height: 1.45; }
input[type="text"], input[type="password"] {
    width: 100%;
    font: 500 17px var(--font);
    padding: 15px 16px;
    border-radius: 14px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.85);
    color: var(--ink);
    outline: none;
    transition: border 0.12s, box-shadow 0.12s;
}
input[type="text"]:focus, input[type="password"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.16);
}
.pwfield { letter-spacing: 0.35em; text-align: center; font-size: 22px; }
.loginform { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.backlink { display: inline-block; margin-top: 18px; color: var(--ink2); text-decoration: none; font-size: 14px; }
.backlink:hover { color: var(--accent); }

.filepick { position: relative; display: block; }
.filepick input[type="file"] {
    position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.filepickface {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    min-height: 76px;
    border: 2px dashed rgba(10, 132, 255, 0.45);
    border-radius: 16px;
    background: rgba(10, 132, 255, 0.06);
    color: #0a5ad4; font-weight: 700; font-size: 16px;
    padding: 14px; text-align: center;
    transition: background 0.12s;
}
.filepick input:focus + .filepickface,
.filepick:hover .filepickface { background: rgba(10, 132, 255, 0.12); }
.fpicon { font-size: 24px; }

.errorbox {
    background: rgba(255, 59, 48, 0.1);
    border: 1px solid rgba(255, 59, 48, 0.3);
    color: #c62d24;
    border-radius: 14px;
    padding: 12px 16px;
    margin-bottom: 18px;
    font-weight: 600; font-size: 14px;
}
.errorbox p { margin: 4px 0; }

.progresswrap { margin: 6px 0 16px; }
.progressbar {
    height: 12px; border-radius: 999px;
    background: rgba(0, 0, 0, 0.07); overflow: hidden;
}
.progressfill {
    height: 100%; width: 0%;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    border-radius: 999px;
    transition: width 0.15s ease;
}
.progresstext { color: var(--ink2); font-size: 13px; font-weight: 600; margin-top: 8px; text-align: center; }

.donecard, .denycard { text-align: center; }
.doneicon, .denyicon { font-size: 56px; margin-bottom: 8px; }
.donecard h2, .denycard h1 { margin: 6px 0 8px; font-size: 26px; font-weight: 800; }
.muted { color: var(--ink2); line-height: 1.5; }
.muted.small { font-size: 14px; }
.bigmuted { color: var(--ink2); font-size: 18px; font-weight: 600; text-align: center; }
.emptycard { text-align: center; display: flex; flex-direction: column; gap: 16px; align-items: center; }

/* ---------- PIN-Bildschirm ---------- */
.pinbody .wrap { justify-content: center; }
.pinstage { text-align: center; user-select: none; }
.pinlogo { margin-bottom: 26px; }
.pinapp {
    width: 84px; height: 84px; margin: 0 auto;
    display: flex; align-items: center; justify-content: center;
    font-size: 44px;
    border-radius: 24px;
    background: linear-gradient(160deg, #ffffff, #e8efff);
    box-shadow: var(--shadow), inset 0 1px 0 #fff;
}
.pinname { margin-top: 14px; font-size: 20px; font-weight: 800; letter-spacing: -0.01em; }
.pinhint { color: var(--ink2); font-weight: 600; font-size: 17px; margin: 0 0 18px; }
.pindots { display: flex; gap: 22px; justify-content: center; margin-bottom: 34px; }
.dot {
    width: 15px; height: 15px; border-radius: 50%;
    border: 1.6px solid var(--ink);
    transition: background 0.1s, transform 0.1s;
}
.dot.on { background: var(--ink); transform: scale(1.08); }
.pindots.shake { animation: shake 0.4s; }
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-12px); } 40% { transform: translateX(11px); }
    60% { transform: translateX(-8px); }  80% { transform: translateX(6px); }
}
.numpad {
    display: grid;
    grid-template-columns: repeat(3, 82px);
    gap: 20px;
    justify-content: center;
}
.numkey {
    width: 82px; height: 82px;
    border-radius: 50%;
    border: 0; cursor: pointer;
    font: 400 32px var(--font);
    color: var(--ink);
    background: rgba(255, 255, 255, 0.6);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    box-shadow: var(--shadow), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    transition: transform 0.08s, background 0.08s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.numkey:active { transform: scale(0.92); background: rgba(200, 215, 245, 0.85); }
.numdel { font-size: 26px; }
.pinsub { color: #a9a9b2; font-size: 13px; margin-top: 26px; }

/* ---------- Admin ---------- */
.tabs {
    display: inline-flex; gap: 4px;
    padding: 5px; border-radius: 16px;
    margin-bottom: 22px;
}
.tab {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 20px;
    border-radius: 12px;
    font-weight: 700; font-size: 15px;
    color: var(--ink2); text-decoration: none;
    transition: background 0.12s, color 0.12s;
}
.tab.active { background: #fff; color: var(--ink); box-shadow: 0 3px 10px rgba(30, 40, 90, 0.12); }
.createcard { margin-bottom: 22px; }
.cardtitle { margin: 0 0 14px; font-size: 19px; font-weight: 800; }
.createform { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.createform input[type="text"] { flex: 1; min-width: 220px; }
.segment {
    display: inline-flex;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 13px; padding: 4px;
}
.segment label { position: relative; }
.segment input { position: absolute; opacity: 0; }
.segment span {
    display: inline-block;
    padding: 10px 18px; border-radius: 10px;
    font-weight: 700; font-size: 15px; color: var(--ink2);
    cursor: pointer; transition: background 0.12s, color 0.12s;
}
.segment input:checked + span { background: #fff; color: var(--ink); box-shadow: 0 2px 8px rgba(30, 40, 90, 0.14); }

.coursecard { margin-bottom: 16px; overflow: hidden; }
.coursesummary {
    display: flex; align-items: center; gap: 14px;
    padding: 18px 22px;
    cursor: pointer; list-style: none;
    flex-wrap: wrap;
}
.coursesummary::-webkit-details-marker { display: none; }
.coursename { font-size: clamp(19px, 2vw, 24px); font-weight: 800; letter-spacing: -0.01em; }
.coursemeta { color: var(--ink2); font-size: 14px; font-weight: 600; margin-left: auto; }
.chev { color: var(--ink2); transition: transform 0.2s; }
details[open] .chev { transform: rotate(180deg); }
.coursebody { padding: 0 22px 22px; display: flex; flex-direction: column; gap: 16px; }
.courseactions { display: flex; gap: 10px; flex-wrap: wrap; }
.inlineform { display: inline-flex; }
.uploadform {
    display: flex; gap: 12px; align-items: stretch; flex-wrap: wrap;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 16px; padding: 14px;
}
.uploadform .filepick { flex: 1; min-width: 240px; }
.uploadform .filepickface { min-height: 56px; }
.uploadform .btn { align-self: center; }

.subgroup { margin-bottom: 30px; }
.subcard { padding: 18px 20px; margin-bottom: 12px; }
.subhead { display: flex; justify-content: space-between; gap: 14px; align-items: flex-start; flex-wrap: wrap; }
.subname { font-weight: 800; font-size: 18px; }
.submembers { color: var(--ink2); font-weight: 600; font-size: 14px; margin-top: 4px; }
.subfiles { margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.subfile {
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    background: rgba(255, 255, 255, 0.55);
    border-radius: 13px; padding: 10px 14px;
    flex-wrap: wrap;
}
.subfilename { font-weight: 600; font-size: 15px; overflow-wrap: anywhere; }
.subfile .btn { padding: 9px 14px; min-height: 40px; font-size: 14px; }

.toast {
    position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
    padding: 14px 24px;
    font-weight: 700; font-size: 15px;
    border-radius: 999px;
    z-index: 60;
    animation: toastin 0.3s ease;
}
@keyframes toastin { from { opacity: 0; transform: translate(-50%, 16px); } }

/* ---------- Lightbox ---------- */
.lightbox[hidden] { display: none !important; }
.lightbox {
    position: fixed; inset: 0; z-index: 100;
    display: flex; align-items: center; justify-content: center;
    background: rgba(20, 24, 40, 0.45);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    padding: 20px;
    animation: fadein 0.18s ease;
}
@keyframes fadein { from { opacity: 0; } }
.lightcard {
    position: relative;
    background: rgba(255, 255, 255, 0.92);
    padding: clamp(24px, 4vw, 44px);
    text-align: center;
    max-width: min(92vw, 760px);
    width: 100%;
    animation: popin 0.2s ease;
}
@keyframes popin { from { transform: scale(0.92); opacity: 0; } }
.lighttitle {
    font-size: clamp(20px, 2.6vw, 30px);
    font-weight: 800; letter-spacing: -0.01em;
    margin-bottom: 16px;
    overflow-wrap: anywhere;
}
.lightqr {
    width: min(76vw, 62vh, 560px);
    aspect-ratio: 1; margin: 0 auto;
    background: #fff; border-radius: 18px; padding: 10px;
}
.lightqr svg { width: 100%; height: 100%; display: block; }
.lightsub { color: var(--ink2); font-weight: 600; margin-top: 16px; font-size: clamp(14px, 1.6vw, 18px); }
.lightclose {
    position: absolute; top: 14px; right: 14px;
    width: 44px; height: 44px; border-radius: 50%;
    border: 0; cursor: pointer;
    font-size: 18px; font-weight: 700; color: var(--ink2);
    background: rgba(0, 0, 0, 0.06);
    transition: background 0.12s;
}
.lightclose:hover { background: rgba(0, 0, 0, 0.12); }