:root {
  --bg: #07101d;
  --bg-deep: #040a13;
  --surface: rgba(14, 28, 47, .78);
  --surface-strong: #101e31;
  --border: rgba(164, 191, 223, .14);
  --border-hover: rgba(83, 215, 193, .42);
  --text: #f4f8fc;
  --muted: #91a3b8;
  --teal: #55dcc4;
  --teal-bright: #78ead6;
  --blue: #68a9ff;
  --danger: #ff7d87;
  --success: #63deb0;
  --shadow: 0 28px 80px rgba(0, 0, 0, .34);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg-deep); }
body {
  min-height: 100vh; margin: 0; color: var(--text); font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 10% 18%, rgba(38, 163, 178, .13), transparent 29rem),
    radial-gradient(circle at 87% 12%, rgba(70, 105, 208, .12), transparent 26rem),
    linear-gradient(145deg, var(--bg-deep), var(--bg) 52%, #081423);
}
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; opacity: .035; background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.7'/%3E%3C/svg%3E"); }
button, input, select { font: inherit; }
button { color: inherit; }
.hidden { display: none !important; }
.page-shell { position: relative; min-height: 100vh; max-width: 1320px; margin: 0 auto; padding: 0 48px; display: flex; flex-direction: column; }
.topbar { height: 96px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border); }
.brand { display: flex; align-items: center; gap: 13px; color: var(--text); text-decoration: none; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(85,220,196,.35); border-radius: 13px; background: rgba(85,220,196,.08); box-shadow: inset 0 0 18px rgba(85,220,196,.05); }
.brand-mark svg { width: 26px; fill: none; stroke: var(--teal); stroke-width: 1.7; }
.brand strong { display: block; font-size: 16px; letter-spacing: -.02em; }
.brand small { display: block; color: var(--muted); font-size: 10px; letter-spacing: .15em; text-transform: uppercase; margin-top: 2px; }
main { flex: 1; display: flex; }
.view { width: 100%; }
.auth-view { min-height: calc(100vh - 160px); display: grid; grid-template-columns: minmax(360px, 470px); justify-content: center; align-items: center; padding: 72px 3vw 90px; }
.eyebrow { color: var(--teal); font-size: 11px; font-weight: 700; letter-spacing: .17em; text-transform: uppercase; display: flex; align-items: center; gap: 10px; }
.eyebrow span { width: 24px; height: 1px; background: var(--teal); box-shadow: 0 0 10px var(--teal); }
h1 { margin: 23px 0 22px; font-size: clamp(54px, 6vw, 86px); line-height: .96; letter-spacing: -.065em; font-weight: 650; }
h1 em { color: var(--teal); font-style: normal; font-weight: 520; }
.auth-copy > p, .workspace-header > div > p { max-width: 570px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; }
.trust-row { display: flex; gap: 27px; margin-top: 40px; color: #c5d1dc; font-size: 12px; }
.trust-row span { display: flex; align-items: center; gap: 8px; }
.trust-row svg, .secure-note svg { width: 17px; fill: none; stroke: var(--teal); stroke-width: 1.7; }
.card { border: 1px solid var(--border); border-radius: 22px; background: linear-gradient(145deg, rgba(19,36,59,.84), rgba(9,21,36,.88)); box-shadow: var(--shadow); backdrop-filter: blur(20px); }
.login-card { padding: 40px; position: relative; overflow: hidden; }
.login-card::before { content: ""; position: absolute; width: 170px; height: 170px; border-radius: 50%; background: rgba(66,205,187,.07); filter: blur(5px); top: -100px; right: -65px; }
.card-icon { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 13px; color: var(--teal); background: rgba(85,220,196,.09); border: 1px solid rgba(85,220,196,.16); margin-bottom: 25px; }
.card-icon svg, .admin-badge svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.kicker { margin: 0 0 8px; color: var(--teal); font-weight: 700; font-size: 10px; letter-spacing: .18em; text-transform: uppercase; }
h2 { margin: 0; font-size: 25px; letter-spacing: -.035em; }
.muted { color: var(--muted); margin: 10px 0 28px; line-height: 1.6; font-size: 14px; }
form label { display: block; color: #cbd6e2; font-size: 12px; font-weight: 650; margin: 21px 0 9px; }
input, select { width: 100%; height: 52px; border-radius: 11px; border: 1px solid var(--border); outline: 0; background: rgba(3,12,22,.55); color: var(--text); padding: 0 15px; transition: border-color .2s, box-shadow .2s, background .2s; }
input::placeholder { color: #617186; }
input:focus, select:focus { border-color: rgba(85,220,196,.6); background: rgba(4,14,24,.75); box-shadow: 0 0 0 3px rgba(85,220,196,.09); }
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 19px) 23px, calc(100% - 14px) 23px; background-size: 5px 5px; background-repeat: no-repeat; }
select option { background: #0d1a2a; }
.code-field { position: relative; }
#loginForm { margin-top: 24px; }
.code-field input { padding-right: 49px; letter-spacing: .08em; }
.code-field button { position: absolute; right: 5px; top: 5px; width: 42px; height: 42px; border: 0; background: transparent; display: grid; place-items: center; cursor: pointer; color: var(--muted); }
.code-field svg { width: 19px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.primary-button { width: 100%; min-height: 52px; margin-top: 18px; border: 0; border-radius: 11px; display: flex; align-items: center; justify-content: center; gap: 12px; background: linear-gradient(135deg, #54dcc3, #43c9b7); color: #061612; font-weight: 750; cursor: pointer; box-shadow: 0 12px 30px rgba(48,196,172,.16); transition: transform .2s, filter .2s; }
.primary-button:hover { transform: translateY(-1px); filter: brightness(1.06); }
.primary-button:disabled { cursor: wait; opacity: .6; transform: none; }
.primary-button svg { width: 18px; fill: none; stroke: currentColor; stroke-width: 2; }
.ghost-button { border: 1px solid var(--border); background: rgba(255,255,255,.02); border-radius: 10px; padding: 9px 14px; color: #b8c5d2; cursor: pointer; }
.ghost-button:hover { border-color: var(--border-hover); color: var(--text); }
.secure-note { border-top: 1px solid var(--border); margin-top: 28px; padding-top: 21px; color: #71859a; display: flex; gap: 8px; align-items: center; font-size: 11px; }
.message { margin-top: 14px; padding: 11px 13px; border-radius: 9px; font-size: 12px; line-height: 1.45; }
.message.error { color: #ffb8be; border: 1px solid rgba(255,125,135,.25); background: rgba(255,85,98,.08); }
.message.success { color: #a5f0d0; border: 1px solid rgba(99,222,176,.25); background: rgba(99,222,176,.08); }
footer { min-height: 64px; padding: 22px 0; display: flex; justify-content: space-between; color: #53657a; font-size: 10px; letter-spacing: .09em; text-transform: uppercase; border-top: 1px solid var(--border); }

.workspace-view { padding: 64px 0 90px; }
.workspace-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 40px; margin-bottom: 45px; }
.workspace-header h1 { font-size: clamp(44px, 5vw, 68px); margin: 17px 0 15px; }
.session-pill { flex: 0 0 auto; min-width: 205px; padding: 13px 17px; border: 1px solid var(--border); border-radius: 12px; display: flex; gap: 11px; align-items: center; background: rgba(9,22,37,.62); }
.session-pill > span { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 12px var(--teal); }
.session-pill small { display: block; color: var(--muted); font-size: 9px; letter-spacing: .09em; text-transform: uppercase; }
.session-pill strong { display: block; font-size: 13px; margin-top: 3px; }
.upload-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr); gap: 22px; align-items: start; }
.upload-card, .history-card, .generator-card, .codes-card { padding: 28px; }
.drop-zone { width: 100%; min-height: 330px; border: 1px dashed rgba(119,161,189,.3); border-radius: 16px; background: rgba(4,13,23,.28); display: flex; flex-direction: column; align-items: center; justify-content: center; cursor: pointer; transition: border-color .2s, background .2s, transform .2s; }
.drop-zone:hover, .drop-zone.dragging { border-color: var(--teal); background: rgba(56,184,168,.06); transform: translateY(-1px); }
.upload-icon { width: 58px; height: 58px; display: grid; place-items: center; border-radius: 17px; color: var(--teal); border: 1px solid rgba(85,220,196,.22); background: rgba(85,220,196,.08); margin-bottom: 19px; }
.upload-icon svg { width: 27px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.drop-zone strong { font-size: 19px; }
.drop-zone > span:not(.upload-icon) { color: var(--muted); margin-top: 7px; font-size: 13px; }
.drop-zone small { color: #617389; margin-top: 20px; font-size: 10px; }
.card-heading { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.count { min-width: 28px; height: 28px; padding: 0 8px; display: grid; place-items: center; border-radius: 20px; background: rgba(85,220,196,.09); color: var(--teal); font-size: 11px; }
.empty-state { min-height: 280px; display: flex; flex-direction: column; align-items: center; justify-content: center; color: #637589; text-align: center; }
.empty-state svg { width: 34px; fill: none; stroke: currentColor; stroke-width: 1.3; opacity: .7; }
.empty-state p { font-size: 13px; line-height: 1.6; }
.empty-state span { font-size: 11px; color: #516277; }
.file-list, .code-list { display: flex; flex-direction: column; gap: 8px; max-height: 450px; overflow: auto; }
.file-row, .code-row { padding: 12px; border: 1px solid var(--border); background: rgba(3,12,22,.3); border-radius: 10px; display: flex; align-items: center; gap: 11px; }
.file-row svg { width: 18px; flex: 0 0 auto; fill: none; stroke: var(--teal); stroke-width: 1.5; }
.file-row div, .code-row > div { min-width: 0; flex: 1; }
.file-row strong, .code-row strong { display: block; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 12px; }
.file-row small, .code-row small { display: block; color: var(--muted); font-size: 9px; margin-top: 4px; }
.selected-files { margin-top: 16px; color: #bfccd8; font-size: 12px; line-height: 1.6; }
.upload-progress { margin-top: 20px; }
.upload-progress > div:first-child { display: flex; justify-content: space-between; color: var(--muted); font-size: 11px; }
.progress-track { height: 5px; border-radius: 5px; background: rgba(255,255,255,.08); margin-top: 9px; overflow: hidden; }
.progress-track span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--teal), var(--blue)); box-shadow: 0 0 10px var(--teal); transition: width .2s; }
.admin-grid { display: grid; grid-template-columns: minmax(340px, .7fr) minmax(440px, 1.3fr); gap: 22px; align-items: start; }
.admin-badge { padding: 10px 14px; border-radius: 11px; display: flex; gap: 8px; align-items: center; color: var(--teal); background: rgba(85,220,196,.08); border: 1px solid rgba(85,220,196,.18); font-size: 12px; font-weight: 700; }
.generator-card h2 { margin-bottom: 28px; }
.generated-code { margin-top: 20px; padding: 15px; border: 1px solid rgba(85,220,196,.25); border-radius: 11px; background: rgba(85,220,196,.06); display: flex; align-items: center; justify-content: space-between; }
.generated-code small { display: block; color: var(--muted); font-size: 9px; text-transform: uppercase; letter-spacing: .1em; }
.generated-code strong { display: block; color: var(--teal-bright); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; letter-spacing: .12em; font-size: 18px; margin-top: 5px; }
.generated-code button, .icon-button, .revoke-button { width: 38px; height: 38px; border: 1px solid var(--border); border-radius: 9px; background: rgba(255,255,255,.02); color: var(--muted); display: grid; place-items: center; cursor: pointer; }
.generated-code svg, .icon-button svg, .revoke-button svg { width: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; }
.code-row { padding: 13px 14px; }
.code-status { flex: 0 0 auto; width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 8px rgba(85,220,196,.5); }
.code-status.used { background: #65788c; box-shadow: none; }
.code-status.expired, .code-status.revoked { background: var(--danger); box-shadow: none; }
.code-row .hint { font-family: ui-monospace, monospace; color: #adc0d2; }
.revoke-button { flex: 0 0 auto; width: 32px; height: 32px; }
.revoke-button:hover { color: var(--danger); border-color: rgba(255,125,135,.35); }

@media (max-width: 900px) {
  .page-shell { padding: 0 25px; }
  .auth-view { grid-template-columns: 1fr; padding: 60px 0 80px; }
  .login-card { max-width: 560px; width: 100%; }
  .upload-grid, .admin-grid { grid-template-columns: 1fr; }
  .workspace-header { align-items: flex-start; flex-direction: column; }
  .session-pill { min-width: 0; }
}
@media (max-width: 560px) {
  .page-shell { padding: 0 17px; }
  .topbar { height: 78px; }
  .auth-view { padding-top: 46px; min-height: auto; }
  h1 { font-size: 48px; }
  .auth-copy > p { font-size: 15px; }
  .trust-row { flex-direction: column; gap: 12px; }
  .login-card, .upload-card, .history-card, .generator-card, .codes-card { padding: 22px; border-radius: 17px; }
  .drop-zone { min-height: 270px; }
  .workspace-view { padding-top: 45px; }
  footer { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; } }