/* ================================================================
   VCGP-Spark  ·  Guest / Auth Layout Stylesheet
   ================================================================ */

:root {
    /* Left panel — deep navy */
    --night:        #0f172a;
    --orange:       #f97316;
    --orange-2:     #ea580c;
    --orange-dim:   rgba(249,115,22,.14);
    --orange-glow:  rgba(249,115,22,.32);

    /* Right panel — warm white */
    --form-bg:      #fafbfc;
    --form-bg2:     #f1f5f9;
    --form-border:  #dde3ec;
    --form-text:    #0f172a;
    --form-sub:     #5a6a85;
    --form-dim:     #9aaabf;
    --danger:       #ef4444;
    --success:      #22c55e;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; font-family: 'Outfit', sans-serif; background: var(--night); color: #fff; }

/* ── Shell ─────────────────────────────────────────────────── */
.auth-shell { display: grid; grid-template-columns: 1fr 500px; min-height: 100vh; }

/* ── Brand canvas (left) ───────────────────────────────────── */
.brand-canvas {
    position: relative; display: flex; flex-direction: column;
    justify-content: space-between;
    padding: 2.5rem 3.5rem; overflow: hidden;
    background: var(--night);
}

.brand-canvas::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(ellipse 70% 50% at 20% 60%, rgba(249,115,22,.1)  0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 80% 20%, rgba(56,189,248,.06) 0%, transparent 55%),
        radial-gradient(ellipse 60% 60% at 50% 100%,rgba(26,37,53,.8)    0%, transparent 70%);
    pointer-events: none;
}

.brand-canvas::after {
    content: ''; position: absolute; inset: 0;
    background-image: radial-gradient(circle, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: 28px 28px;
    pointer-events: none;
}

.bc-top { position: relative; z-index: 2; display: flex; align-items: center; gap: .85rem; animation: fadeUp .6s ease both; }

.bc-logo { width: 40px; height: 40px; border-radius: 10px; background: var(--orange); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 1.05rem; box-shadow: 0 0 20px var(--orange-glow); flex-shrink: 0; }

.bc-wordmark { font-size: 1rem; font-weight: 700; color: #fff; letter-spacing: -.01em; }
.bc-wordmark small { display: block; font-size: .6rem; font-weight: 400; color: rgba(255,255,255,.3); letter-spacing: .12em; text-transform: uppercase; font-family: 'DM Mono', monospace; }

.bc-hero { position: relative; z-index: 2; animation: fadeUp .6s .1s ease both; }

.bc-eyebrow { display: inline-flex; align-items: center; gap: .5rem; font-family: 'DM Mono', monospace; font-size: .65rem; font-weight: 500; color: var(--orange); letter-spacing: .15em; text-transform: uppercase; margin-bottom: 1.2rem; padding: .3rem .75rem; border: 1px solid rgba(249,115,22,.3); border-radius: 99px; background: var(--orange-dim); width: fit-content; }
.bc-eyebrow::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: var(--orange); box-shadow: 0 0 6px var(--orange); animation: blink 2s ease infinite; }

.bc-title { font-size: clamp(2.4rem, 4vw, 3.4rem); font-weight: 800; line-height: 1.08; letter-spacing: -.03em; color: #fff; margin-bottom: 1.1rem; }
.bc-title .hl { background: linear-gradient(90deg, var(--orange), #fbbf24); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.bc-desc { font-size: .95rem; font-weight: 300; color: rgba(255,255,255,.45); line-height: 1.75; max-width: 380px; margin-bottom: 2.5rem; }

.bc-features { display: flex; flex-direction: column; gap: .65rem; }

.bc-feat { display: flex; align-items: center; gap: .85rem; font-size: .85rem; color: rgba(255,255,255,.5); animation: fadeUp .6s ease both; }
.bc-feat:nth-child(1) { animation-delay: .25s; }
.bc-feat:nth-child(2) { animation-delay: .35s; }
.bc-feat:nth-child(3) { animation-delay: .45s; }
.bc-feat:nth-child(4) { animation-delay: .55s; }

.bc-feat-icon { width: 32px; height: 32px; border-radius: 8px; flex-shrink: 0; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.08); display: flex; align-items: center; justify-content: center; color: var(--orange); font-size: .82rem; }

.bc-stats { position: relative; z-index: 2; display: flex; gap: 2rem; animation: fadeUp .6s .6s ease both; }
.bc-stat  { border-top: 1px solid rgba(255,255,255,.1); padding-top: .75rem; }
.bc-stat-val { font-size: 1.55rem; font-weight: 800; color: #fff; line-height: 1; font-variant-numeric: tabular-nums; }
.bc-stat-lbl { font-family: 'DM Mono', monospace; font-size: .6rem; color: rgba(255,255,255,.3); text-transform: uppercase; letter-spacing: .1em; margin-top: .2rem; }

/* Floating geometry */
.geo { position: absolute; z-index: 1; border-radius: 50%; animation: float 8s ease-in-out infinite; }
.geo-1 { width: 320px; height: 320px; right: -100px; top: -80px; background: conic-gradient(from 0deg, transparent 60%, rgba(249,115,22,.08) 100%); border: 1px solid rgba(249,115,22,.1); animation-duration: 12s; }
.geo-2 { width: 200px; height: 200px; right: 60px; top: 80px; background: transparent; border: 1px solid rgba(56,189,248,.08); border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; animation-duration: 9s; animation-delay: -3s; }
.geo-3 { width: 120px; height: 120px; right: 180px; top: 210px; background: var(--orange-dim); border-radius: 28px; transform: rotate(20deg); animation-duration: 7s; animation-delay: -1.5s; }

/* ── Form panel (right) ────────────────────────────────────── */
.form-panel { background: var(--form-bg); display: flex; flex-direction: column; justify-content: center; padding: 2.8rem 3rem; position: relative; overflow-y: auto; box-shadow: -16px 0 50px rgba(0,0,0,.35); border-left: 1px solid var(--form-border); animation: slideIn .55s cubic-bezier(.16,1,.3,1) both; }
.form-panel::before { content: ''; position: absolute; top: 0; right: 0; width: 200px; height: 200px; background: radial-gradient(circle at top right, rgba(249,115,22,.07), transparent 65%); pointer-events: none; }

/* ── Lang row ──────────────────────────────────────────────── */
.lang-row { display: flex; justify-content: flex-end; margin-bottom: 2rem; }
.lang-switch { display: flex; align-items: center; background: var(--form-bg2); border: 1px solid var(--form-border); border-radius: 8px; padding: .2rem; gap: 2px; }
.lang-btn      { font-family: 'DM Mono', monospace; font-size: .68rem; font-weight: 500; letter-spacing: .08em; padding: .28rem .6rem; border-radius: 5px; text-decoration: none; color: var(--form-dim); transition: all .15s; border: none; background: none; cursor: pointer; }
.lang-btn:hover  { color: var(--form-sub); }
.lang-btn.active { background: var(--orange); color: #fff; box-shadow: 0 2px 8px var(--orange-glow); }
.lang-sep        { color: var(--form-border); font-size: .75rem; user-select: none; }

/* ── Security badge ────────────────────────────────────────── */
.security-badge { display: flex; align-items: center; gap: .5rem; font-family: 'DM Mono', monospace; font-size: .62rem; color: var(--form-dim); letter-spacing: .1em; text-transform: uppercase; margin-bottom: 1.8rem; }
.security-dot   { width: 6px; height: 6px; border-radius: 50%; background: var(--success); box-shadow: 0 0 8px rgba(34,197,94,.6); animation: blink 2.5s ease infinite; }

/* ── Logo ──────────────────────────────────────────────────── */
.form-logo { width: 48px; height: 48px; border-radius: 12px; background: var(--orange); display: flex; align-items: center; justify-content: center; font-size: 1.35rem; color: #fff; margin-bottom: 1.6rem; box-shadow: 0 4px 20px var(--orange-glow), 0 0 0 5px rgba(249,115,22,.12); }

/* ── Headings ──────────────────────────────────────────────── */
.form-title    { font-size: 1.75rem; font-weight: 800; color: var(--form-text); letter-spacing: -.03em; line-height: 1.1; margin-bottom: .4rem; }
.form-subtitle { font-size: .875rem; font-weight: 400; color: var(--form-sub); margin-bottom: 2rem; line-height: 1.5; }

/* ── Alerts ────────────────────────────────────────────────── */
.alert-custom { background: rgba(239,68,68,.06); border: 1px solid rgba(239,68,68,.2); border-left: 3px solid var(--danger); border-radius: 10px; padding: .85rem 1rem; margin-bottom: 1.4rem; font-size: .84rem; color: #b91c1c; display: flex; align-items: flex-start; gap: .6rem; animation: shake .4s ease; }
.alert-success-custom { background: rgba(34,197,94,.06); border-color: rgba(34,197,94,.2); border-left-color: var(--success); color: #15803d; }

/* ── Fields ────────────────────────────────────────────────── */
.field-group { margin-bottom: 1.2rem; }
.field-label { display: block; font-family: 'DM Mono', monospace; font-size: .63rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--form-sub); margin-bottom: .5rem; }
.field-wrap  { position: relative; }

.field-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--form-dim); font-size: .9rem; pointer-events: none; transition: color .2s; }

.field-input { width: 100%; background: var(--form-bg2) !important; border: 1.5px solid var(--form-border) !important; border-radius: 11px !important; color: var(--form-text) !important; font-family: 'Outfit', sans-serif; font-size: .92rem; font-weight: 400; padding: .78rem 1rem .78rem 2.7rem !important; outline: none; transition: border-color .2s, box-shadow .2s, background .2s; }
.field-input::placeholder { color: var(--form-dim) !important; }
.field-input:focus { border-color: var(--orange) !important; background: #fff !important; box-shadow: 0 0 0 3px rgba(249,115,22,.1) !important; }
.field-wrap:focus-within .field-icon { color: var(--orange); }
.field-input.is-invalid { border-color: var(--danger) !important; box-shadow: 0 0 0 3px rgba(239,68,68,.08) !important; }

.btn-toggle-pwd { position: absolute; right: 13px; top: 50%; transform: translateY(-50%); background: none; border: none; color: var(--form-dim); cursor: pointer; padding: 4px; line-height: 1; transition: color .15s; font-size: .9rem; }
.btn-toggle-pwd:hover { color: var(--form-sub); }

.invalid-feedback { color: var(--danger) !important; font-size: .75rem; margin-top: .35rem; display: flex; align-items: center; gap: .3rem; font-family: 'DM Mono', monospace; }

/* ── Extras row ────────────────────────────────────────────── */
.form-extras { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.6rem; }
.custom-check { display: flex; align-items: center; gap: .5rem; cursor: pointer; font-size: .84rem; color: var(--form-sub); user-select: none; }
.custom-check input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--orange); cursor: pointer; }
.link-forgot  { font-size: .82rem; font-weight: 600; color: var(--orange); text-decoration: none; transition: opacity .15s; }
.link-forgot:hover { opacity: .7; }

/* ── Submit button ─────────────────────────────────────────── */
.btn-login { width: 100%; background: var(--orange); border: none; color: #fff; font-family: 'Outfit', sans-serif; font-size: .95rem; font-weight: 700; letter-spacing: .02em; padding: .88rem; border-radius: 11px; cursor: pointer; transition: all .22s; display: flex; align-items: center; justify-content: center; gap: .55rem; box-shadow: 0 4px 16px var(--orange-glow); position: relative; overflow: hidden; }
.btn-login::after { content: ''; position: absolute; top: 0; left: -100%; width: 60%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,.18), transparent); transform: skewX(-20deg); transition: left .5s ease; }
.btn-login:hover      { background: var(--orange-2); box-shadow: 0 6px 22px var(--orange-glow); transform: translateY(-1px); }
.btn-login:hover::after { left: 160%; }
.btn-login:active     { transform: translateY(0); box-shadow: 0 2px 10px var(--orange-glow); }
.btn-login.loading    { pointer-events: none; opacity: .8; }
.spinner-btn          { width: 16px; height: 16px; border: 2px solid rgba(255,255,255,.3); border-top-color: #fff; border-radius: 50%; animation: spin .6s linear infinite; display: none; }
.btn-login.loading .spinner-btn { display: block; }
.btn-login.loading .btn-text    { display: none; }

/* ── Footer ────────────────────────────────────────────────── */
.form-footer { margin-top: 1.6rem; padding-top: 1.4rem; border-top: 1px solid var(--form-border); display: flex; align-items: center; justify-content: space-between; }
.version-tag, .secured-tag { font-family: 'DM Mono', monospace; font-size: .62rem; color: var(--form-dim); letter-spacing: .06em; }
.secured-tag { display: flex; align-items: center; gap: .4rem; }

/* ── Animations ────────────────────────────────────────────── */
@keyframes fadeUp  { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:none} }
@keyframes slideIn { from{opacity:0;transform:translateX(24px)} to{opacity:1;transform:none} }
@keyframes float   { 0%,100%{transform:translateY(0) rotate(0deg)} 50%{transform:translateY(-18px) rotate(4deg)} }
@keyframes blink   { 0%,100%{opacity:1} 50%{opacity:.3} }
@keyframes spin    { to{transform:rotate(360deg)} }
@keyframes shake   { 0%,100%{transform:translateX(0)} 20%{transform:translateX(-6px)} 40%{transform:translateX(6px)} 60%{transform:translateX(-3px)} 80%{transform:translateX(3px)} }

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 880px) {
    .auth-shell   { grid-template-columns: 1fr; }
    .brand-canvas { display: none; }
    .form-panel   { min-height: 100vh; padding: 2.5rem 1.8rem; }
    html, body    { overflow: auto; }
}