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

/* ══════════════════════════════════
   TOKENS
══════════════════════════════════ */
:root, [data-theme="dark"] {
    --bg: #050d1a;
    --text: #eef2ff;
    --text-sub: #6b80a0;
    --text-mute: #588bcc;
    --gold: #a85e00;
    --gold-soft: rgba(240,160,48,.18);
    --blue: #1a72e8;
    --blue-bright: #4da3ff;
    --blue-soft: rgba(26,114,232,.22);
    --card-bg: rgba(8,18,36,0.78);
    --card-border: rgba(77,163,255,0.16);
    --input-bg: rgba(255,255,255,0.055);
    --input-border: rgba(255,255,255,0.12);
    --input-text: #eef2ff;
    --input-ph: rgba(238,242,255,0.28);
    --divider: rgba(255,255,255,0.07);
    --footer: #f0a030;
    --tog-bg: rgba(255,255,255,0.08);
    --tog-border: rgba(255,255,255,0.16);
    --tog-text: rgba(255,255,255,0.72);
    --str-bg: rgba(255,255,255,0.07);
    --shadow: 0 40px 100px rgba(0,0,0,.65), 0 0 0 1px rgba(77,163,255,0.10) inset;
}

[data-theme="light"] {
    --bg: #e4ecf9;
    --text: #08121f;
    --text-sub: #4a607e;
    --text-mute: #8a9db5;
    --gold: #a85e00;
    --gold-soft: rgba(168,94,0,.12);
    --blue: #1a72e8;
    --blue-bright: #1255c0;
    --blue-soft: rgba(26,114,232,.14);
    --card-bg: rgba(255,255,255,0.86);
    --card-border: rgba(26,114,232,0.15);
    --input-bg: rgba(255,255,255,0.95);
    --input-border: rgba(26,114,232,0.20);
    --input-text: #08121f;
    --input-ph: rgba(8,18,31,0.28);
    --divider: rgba(0,0,0,0.08);
    --footer: rgba(8,18,31,0.38);
    --tog-bg: rgba(255,255,255,0.88);
    --tog-border: rgba(26,114,232,0.20);
    --tog-text: rgba(8,18,31,0.70);
    --str-bg: rgba(0,0,0,0.07);
    --shadow: 0 24px 72px rgba(26,114,232,.14), 0 2px 8px rgba(0,0,0,.06), 0 0 0 1px rgba(255,255,255,.9) inset;
    --footertext: 
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Inter',-apple-system,BlinkMacSystemFont,'SF Pro Text','Helvetica Neue',sans-serif;
    background: var(--bg);
    color: var(--text);
    transition: background .5s,color .5s;
}

/* ══════════════════════════════════
   CANVAS LAYERS
══════════════════════════════════ */
#c-aurora, #c-grid, #c-particles {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

#c-aurora {
    z-index: 1;
}

#c-grid {
    z-index: 2;
}

#c-particles {
    z-index: 3;
}

/* ══════════════════════════════════
   TOGGLE
══════════════════════════════════ */
.toggle {
    position: fixed;
    top: 20px;
    right: 22px;
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 8px 16px 8px 10px;
    background: var(--tog-bg);
    border: 1px solid var(--tog-border);
    border-radius: 999px;
    cursor: pointer;
    color: var(--tog-text);
    font-family: inherit;
    font-size: .73rem;
    font-weight: 500;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transition: background .35s,border-color .35s,color .35s,transform .2s,box-shadow .3s;
    user-select: none;
    animation: fadeDown .7s .9s both;
}

    .toggle:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px var(--blue-soft);
    }

    .toggle:active {
        transform: scale(.96);
    }

.ttrack {
    width: 38px;
    height: 21px;
    border-radius: 999px;
    position: relative;
    flex-shrink: 0;
    transition: background .35s;
}

[data-theme="dark"] .ttrack {
    background: var(--blue);
}

[data-theme="light"] .ttrack {
    background: var(--gold);
}

.tknob {
    position: absolute;
    top: 2.5px;
    left: 2.5px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .6rem;
    line-height: 1;
    transition: transform .38s cubic-bezier(.34,1.56,.64,1);
    box-shadow: 0 1px 4px rgba(0,0,0,.3);
}

[data-theme="light"] .tknob {
    transform: translateX(17px);
}

@keyframes fadeDown {
    from {
        opacity: 0;
        transform: translateY(-14px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ══════════════════════════════════
   SCREEN
══════════════════════════════════ */
.screen {
    position: relative;
    z-index: 10;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ══════════════════════════════════
   CARD
══════════════════════════════════ */
.card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 26px;
    padding: 43px 30px 38px;
    width: 100%;
    max-width: 450px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(48px);
    -webkit-backdrop-filter: blur(48px);
    transition: background .5s,border-color .5s,box-shadow .5s;
    animation: cardIn .85s cubic-bezier(.22,1,.36,1) both;
    overflow: hidden;
}

@keyframes cardIn {
    from {
        opacity: 0;
        transform: translateY(32px) scale(.97);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Shimmer sweep on card */
.card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 26px;
    background: linear-gradient(105deg,transparent 40%,rgba(77,163,255,.055) 50%,transparent 60%);
    background-size: 200% 100%;
    animation: shimmerSweep 4s ease-in-out infinite;
    pointer-events: none;
}

@keyframes shimmerSweep {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

/* top glow bar */
.card-glow-bar {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 1px;
    background: linear-gradient(90deg,transparent,var(--blue-bright),transparent);
    opacity: .7;
    border-radius: 0 0 4px 4px;
}

[data-theme="light"] .card-glow-bar {
    opacity: .4;
}

/* ── Branding row ── */
.brand-row {
    display: flex;
    align-items: center;
    margin-bottom: 7px;
    animation: fadeUp .7s .3s both;
    justify-content: center;
}

.brand-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    background: linear-gradient(135deg,var(--blue) 0%,var(--gold) 100%);
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 18px var(--blue-soft);
    transition: box-shadow .5s;
}

    .brand-icon svg {
        width: 22px;
        height: 22px;
    }

.brand-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.brand-name {
    font-size: .97rem;
    font-weight: 700;
    letter-spacing: -.01em;
    color: var(--text);
    transition: color .5s;
    line-height: 1.1;
}

    .brand-name sup {
        font-size: .5rem;
        font-weight: 600;
        color: var(--gold);
        vertical-align: super;
        letter-spacing: .05em;
        transition: color .5s;
    }

.brand-by {
    font-size: .65rem;
    font-weight: 500;
    color: var(--text-sub);
    letter-spacing: .10em;
    text-transform: uppercase;
    transition: color .5s;
}

    .brand-by b {
        color: var(--gold);
        font-weight: 600;
        transition: color .5s;
    }

/* divider between brand row and form */
.brand-sep {
    height: 1px;
    background: var(--divider);
    margin-bottom: 26px;
    animation: fadeUp .7s .36s both;
    transition: background .5s;
}

/* ── Headline ── */
.card-title {
    font-size: 1.32rem;
    font-weight: 700;
    letter-spacing: -.03em;
    color: var(--text);
    margin-bottom: 6px;
    animation: fadeUp .7s .42s both;
    transition: color .5s;
}

.card-desc {
    font-size: .82rem;
    color: var(--text-sub);
    line-height: 1.68;
    margin-bottom: 26px;
    animation: fadeUp .7s .48s both;
    transition: color .5s;
}

/* ── Input ── */
.input-group {
    margin-bottom: 6px;
    animation: fadeUp .7s .54s both;
    padding: 0px 15px;
}

.input-label {
    display: block;
    font-size: .68rem;
    font-weight: 600;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--text-sub);
    margin-bottom: 8px;
    transition: color .5s;
}

.input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.iicon {
    position: absolute;
    left: 14px;
    color: var(--text-sub);
    pointer-events: none;
    transition: color .3s,transform .3s;
}

.code-input {
    width: 100%;
    padding: 14px 14px 14px 44px;
    background: var(--input-bg);
    border: 1.5px solid var(--input-border);
    border-radius: 13px;
    color: var(--input-text);
    font-family: inherit;
    font-size: .95rem;
    font-weight: 500;
    letter-spacing: .03em;
    outline: none;
    transition: border-color .3s,background .3s,box-shadow .3s,color .5s;
}

    .code-input::placeholder {
        color: var(--input-ph);
    }

    .code-input:focus {
        border-color: var(--blue-bright);
        background: rgba(26,114,232,.07);
        box-shadow: 0 0 0 4px rgba(26,114,232,.14);
    }

[data-theme="light"] .code-input:focus {
    background: rgba(26,114,232,.04);
}

.input-wrap:focus-within .iicon {
    color: var(--blue-bright);
    transform: scale(1.1);
}

/* strength bar */
.strack {
    height: 3px;
    border-radius: 99px;
    background: var(--str-bg);
    margin: 9px 0 4px;
    overflow: hidden;
    transition: background .5s;
}

.sfill {
    height: 100%;
    border-radius: 99px;
    width: 0%;
    transition: width .4s,background .4s;
}

.shint {
    font-size: .7rem;
    color: var(--text-sub);
    min-height: 15px;
    transition: color .3s;
}

.errmsg {
    font-size: .75rem;
    color: #f87171;
    margin-top: 4px;
    min-height: 17px;
}

/* ── Button ── */
.btn {
    position: relative;
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 13px;
    background: linear-gradient(135deg,#1a72e8 0%,#0d52b8 100%);
    color: #fff;
    font-family: inherit;
    font-size: .9rem;
    font-weight: 600;
    letter-spacing: .02em;
    cursor: pointer;
    overflow: hidden;
    transition: transform .2s,box-shadow .25s,background .3s;
    box-shadow: 0 6px 24px var(--blue-soft);
    margin-top: 18px;
    animation: fadeUp .7s .72s both;
}

    .btn::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg,rgba(255,255,255,.22),transparent);
        opacity: 0;
        transition: opacity .3s;
    }

    .btn:hover:not(:disabled) {
        transform: translateY(-2px);
        box-shadow: 0 12px 36px var(--blue-soft);
    }

    .btn:hover::before {
        opacity: 1;
    }

    .btn:active:not(:disabled) {
        transform: translateY(0) scale(.99);
    }

    .btn:disabled {
        cursor: not-allowed;
        opacity: .82;
    }

.btn-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,.22);
    transform: scale(0);
    animation: ripple .55s linear;
    pointer-events: none;
}

@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.shake {
    animation: shake .4s cubic-bezier(.36,.07,.19,.97) both;
}

@keyframes shake {
    10%,90% {
        transform: translateX(-3px);
    }

    20%,80% {
        transform: translateX(5px);
    }

    30%,50%,70% {
        transform: translateX(-5px);
    }

    40%,60% {
        transform: translateX(5px);
    }
}

/* ── Divider & help ── */
.divider {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 22px 0 14px;
    animation: fadeUp .7s .80s both;
}

    .divider::before, .divider::after {
        content: '';
        flex: 1;
        height: 1px;
        background: var(--divider);
        transition: background .5s;
    }

    .divider span {
        font-size: .67rem;
        color: var(--text-mute);
        letter-spacing: .09em;
        white-space: nowrap;
        transition: color .5s;
    }

.help {
    display: block;
    text-align: center;
    font-size: .75rem;
    color: var(--text-sub);
    text-decoration: none;
    transition: color .3s;
    animation: fadeUp .7s .86s both;
}

    .help:hover {
        color: var(--gold);
    }

/* ── Footer ── */
.footer {
    position: fixed;
    bottom: 16px;
    left: 0;
    right: 0;
    text-align: center;
    font-size: .75rem;
    color: var(--footer);
    letter-spacing: .07em;
    z-index: 20;
    animation: fadeUp .7s 1.1s both;
    transition: color .5s;
}

    .footer a {
        color: inherit;
        text-decoration: none;
        transition: color .3s;
    }

        .footer a:hover {
            color: var(--gold);
        }

/* ── Loader ── */
.loader {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: var(--bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    animation: fadeOut .5s 1.5s forwards;
    pointer-events: none;
    transition: background .5s;
}

.loader-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    animation: fadeUp .5s .1s both;
}

.loader-icon {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg,var(--blue),var(--gold));
    border-radius: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-words {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.loader-prod {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

    .loader-prod sup {
        color: var(--gold);
        font-size: .5rem;
        font-weight: 600;
    }

.loader-comp {
    font-size: .62rem;
    font-weight: 500;
    color: var(--text-sub);
    letter-spacing: .12em;
    text-transform: uppercase;
}

.loader-track {
    width: 130px;
    height: 2px;
    background: rgba(255,255,255,.08);
    border-radius: 99px;
    overflow: hidden;
    animation: fadeUp .5s .25s both;
}

.loader-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg,var(--blue),var(--gold));
    border-radius: 99px;
    animation: loaderFill 1.2s .3s ease forwards;
}

@keyframes loaderFill {
    to {
        width: 100%;
    }
}

@keyframes fadeOut {
    to {
        opacity: 0;
    }
}

/* ── Misc ── */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(18px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media(max-width:480px) {
    .card {
        padding: 34px 22px 28px;
        border-radius: 20px;
        margin: 0 14px;
    }

    .card-title {
        font-size: 1.4rem;
    }
}