:root {
    --bg:      #080c10;
    --surf:    #0d1117;
    --surf2:   #161b22;
    --border:  #21262d;
    --acc:     #3fb950;
    --acc-dim: rgba(63,185,80,.12);
    --text:    #c9d1d9;
    --dim:     #8b949e;
    --err:     #f85149;
    --warn:    #d29922;
    --r:       10px;
    --font:    'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    min-height: 100vh;
    line-height: 1.5;
}

/* ── AUTH ──────────────────────────────────────────────────────────────── */
.auth-page {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 16px;
}

.auth-wrap {
    width: 100%;
    max-width: 420px;
    background: var(--surf);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px 36px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 28px;
}
.site-logo {
    max-width: 180px;
    height: auto;
    margin-bottom: 12px;
    filter: drop-shadow(0 0 8px rgba(63,185,80,.25));
}
.auth-logo h1 { font-size: 22px; font-weight: 700; color: var(--acc); letter-spacing: -.3px; }
.auth-logo p  { color: var(--dim); font-size: 13px; margin-top: 4px; }

/* Tabs */
.tab-row {
    display: flex;
    gap: 4px;
    background: var(--surf2);
    border-radius: 8px;
    padding: 4px;
    margin-bottom: 22px;
}
.tab-btn {
    flex: 1; border: none; border-radius: 6px;
    background: transparent; color: var(--dim);
    font-size: 14px; padding: 8px; cursor: pointer;
    transition: all .15s;
}
.tab-btn.active { background: var(--acc); color: #000; font-weight: 700; }

/* Forms */
.aform { display: flex; flex-direction: column; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { font-size: 11px; font-weight: 600; color: var(--dim); text-transform: uppercase; letter-spacing: .5px; }
.field label small { text-transform: none; font-weight: 400; }

input[type="text"],
input[type="password"],
input[type="email"],
textarea,
select {
    background: var(--surf2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 13px;
    color: var(--text);
    font-size: 14px;
    font-family: var(--font);
    outline: none;
    transition: border-color .15s;
    width: 100%;
}
input:focus, textarea:focus { border-color: var(--acc); }
textarea { resize: vertical; min-height: 110px; }

.btn-primary {
    background: var(--acc); color: #000;
    border: none; border-radius: 8px;
    padding: 12px; font-size: 15px; font-weight: 700;
    cursor: pointer; width: 100%;
    transition: filter .15s, transform .1s;
}
.btn-primary:hover   { filter: brightness(1.1); }
.btn-primary:active  { transform: scale(.98); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }

.alert {
    padding: 10px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 2px;
}
.alert.err { background: rgba(248,81,73,.12); border: 1px solid rgba(248,81,73,.35); color: #f87171; }
.alert.ok  { background: var(--acc-dim); border: 1px solid rgba(63,185,80,.35); color: var(--acc); }

.d-none { display: none !important; }

/* ── APP HEADER ────────────────────────────────────────────────────────── */
.app-header {
    display: flex; align-items: center; gap: 12px;
    background: var(--surf); border-bottom: 1px solid var(--border);
    padding: 13px 24px;
}
.brand { font-weight: 700; font-size: 16px; color: var(--acc); flex: 1; display: flex; align-items: center; gap: 10px; }
.header-logo { height: 28px; width: auto; vertical-align: middle; }
.user-row { display: flex; align-items: center; gap: 16px; }
.user-name { font-size: 13px; color: var(--dim); }
.logout-link { font-size: 13px; color: var(--dim); text-decoration: none; transition: color .15s; }
.logout-link:hover { color: var(--err); }

/* ── MAIN LAYOUT ───────────────────────────────────────────────────────── */
.app-main {
    max-width: 740px;
    margin: 36px auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ── OP SELECTOR ───────────────────────────────────────────────────────── */
.op-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.op-card {
    background: var(--surf); border: 2px solid var(--border); border-radius: 12px;
    padding: 20px 16px; cursor: pointer; text-align: center;
    display: flex; flex-direction: column; align-items: center; gap: 6px;
    transition: border-color .15s, background .15s;
    color: var(--text);
}
.op-card:hover  { border-color: var(--acc); }
.op-card.active { border-color: var(--acc); background: var(--acc-dim); }
.op-card .op-icon { font-size: 30px; }
.op-card strong { font-size: 15px; }
.op-card small  { color: var(--dim); font-size: 12px; }

/* ── PANEL ─────────────────────────────────────────────────────────────── */
.panel {
    background: var(--surf); border: 1px solid var(--border); border-radius: 12px;
    padding: 28px 28px 24px;
    display: flex; flex-direction: column; gap: 18px;
}
.panel h2 { font-size: 17px; font-weight: 700; }

/* ── DROP ZONE ─────────────────────────────────────────────────────────── */
.drop-zone {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: 10px;
    transition: border-color .15s, background .15s;
    cursor: pointer;
}
.drop-zone:hover, .drop-zone.over { border-color: var(--acc); background: var(--acc-dim); }
.drop-zone input[type="file"] {
    position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%;
}
.dz-body {
    padding: 36px 20px; text-align: center;
    pointer-events: none;
}
.dz-icon { font-size: 34px; margin-bottom: 8px; }
.dz-text { font-size: 14px; color: var(--dim); }
.dz-hint { font-size: 12px; color: var(--dim); opacity: .6; margin-top: 3px; }

.img-preview {
    width: 100%; max-height: 180px; object-fit: contain;
    border-radius: 8px; margin-top: 10px;
}

/* ── CAPACITY ──────────────────────────────────────────────────────────── */
.cap-info { display: flex; flex-direction: column; gap: 5px; font-size: 12px; color: var(--dim); margin-top: 8px; }
.cap-track { background: var(--surf2); border-radius: 4px; height: 6px; overflow: hidden; }
.cap-fill  { height: 100%; background: var(--acc); border-radius: 4px; transition: width .3s, background .3s; }

/* ── FIELD HINTS ───────────────────────────────────────────────────────── */
.field-hint { font-size: 12px; color: var(--dim); margin-top: 3px; line-height: 1.5; }
.field-hint.right { text-align: right; }

/* ── PASSWORD ──────────────────────────────────────────────────────────── */
.pw-wrap { position: relative; display: flex; }
.pw-wrap input { padding-right: 42px; }
.eye-btn {
    position: absolute; right: 2px; top: 50%; transform: translateY(-50%);
    background: none; border: none; cursor: pointer; padding: 6px 10px;
    font-size: 16px; color: var(--dim); line-height: 1;
}

/* ── STRENGTH ──────────────────────────────────────────────────────────── */
.strength-bar { display: flex; gap: 4px; margin-top: 6px; }
.s-dot { width: 22px; height: 4px; border-radius: 2px; background: var(--border); transition: background .2s; }

/* ── PROGRESS ──────────────────────────────────────────────────────────── */
.progress-wrap { background: var(--surf2); border-radius: 4px; height: 4px; overflow: hidden; }
.progress-fill {
    height: 100%; width: 60%; background: var(--acc);
    animation: progress-shimmer 1.2s ease-in-out infinite;
}
@keyframes progress-shimmer {
    0%   { opacity: 1; }
    50%  { opacity: .4; }
    100% { opacity: 1; }
}

/* ── RESULT ────────────────────────────────────────────────────────────── */
.result-box {
    border-radius: 8px; padding: 14px 16px;
    font-size: 14px; line-height: 1.65;
    white-space: pre-wrap; word-break: break-word;
}
.res-ok  { background: var(--acc-dim); border: 1px solid rgba(63,185,80,.35); color: #7ee787; }
.res-err { background: rgba(248,81,73,.1); border: 1px solid rgba(248,81,73,.35); color: #f87171; }

/* ── RESPONSIVE ────────────────────────────────────────────────────────── */
@media (max-width: 520px) {
    .auth-wrap { padding: 28px 20px; }
    .app-main  { margin: 20px auto; }
    .panel     { padding: 20px 16px; }
    .op-card strong { font-size: 13px; }
}