:root {
    --register-bg: #fafafa;
    --register-surface: #ffffff;
    --register-border: #d4d4d4;
    --register-text: #0d0b10;
    --register-muted: #4c4650;
    --register-purple: #1d0b25;
    --register-purple-hover: #2b1237;
    --register-yellow-bg: #fff3ce;
    --register-yellow-border: #f2d787;
    --register-yellow-text: #705300;
    --register-blue: #1265e8;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }

body.register-body {
    min-height: 100vh;
    background: var(--register-bg);
    color: var(--register-text);
    font-family: Arial, Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* Header styling preserved */
.register-header {
    height: 72px;
    background: #fff;
    border-bottom: 1px solid #e5e5e5;
    box-shadow: 0 3px 10px rgba(0,0,0,.08);
    display: flex;
    align-items: center;
    padding: 0 12px;
    gap: 8px;
    position: relative;
    z-index: 10;
}

.register-menu {
    width: 42px;
    height: 42px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 8px;
    text-decoration: none;
    flex-shrink: 0;
}

.register-menu span {
    display: block;
    width: 22px;
    height: 3px;
    border-radius: 3px;
    background: #18121d;
}

.register-brand {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #151019;
    text-decoration: none;
    min-width: 0;
}

.register-brand img {
    width: 50px;
    height: 50px;
    object-fit: contain;
}

.register-brand-name {
    display: none;
    font-weight: 800;
    letter-spacing: .4px;
    text-transform: uppercase;
}

.register-header-actions {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 8px;
}

.register-icon-btn,
.register-guide-btn {
    height: 43px;
    border: 1px solid #cfcbd1;
    background: #fff;
    border-radius: 6px;
    color: #24152a;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.register-icon-btn { width: 48px; flex-shrink: 0; }

.download-icon {
    width: 25px;
    height: 27px;
    border-radius: 7px;
    background: #4bc9ae;
    color: #fff;
    font-size: 24px;
    line-height: 26px;
    font-weight: 800;
    text-align: center;
}

.register-theme-toggle {
    width: 48px;
    height: 25px;
    border: 0;
    background: #bdbdbd;
    border-radius: 18px;
    padding: 0 3px;
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
}

.theme-sun {
    position: absolute;
    left: 3px;
    top: -2px;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    color: #ffbf20;
    background: #ffc72c;
    font-size: 18px;
    box-shadow: 0 0 0 2px #ffe9a5;
}

.theme-knob { display: none; }

.register-guide-btn {
    width: 82px;
    font-size: 15px;
    gap: 7px;
    cursor: pointer;
    flex-shrink: 0;
}

.guide-info {
    width: 16px;
    height: 16px;
    border: 1.5px solid currentColor;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-family: Georgia, serif;
}

/* Compact registration layout */
.register-main {
    min-height: calc(100vh - 72px);
    padding: 9px 9px 18px;
}

.register-shell {
    width: 100%;
    max-width: 445px;
    margin: 0 auto;
}

.register-bonus-banner {
    width: 100%;
    min-height: 42px;
    border: 1px solid var(--register-yellow-border);
    background: var(--register-yellow-bg);
    color: var(--register-yellow-text);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    text-align: center;
    padding: 6px 8px;
    font-size: 12px;
    line-height: 1.3;
    font-weight: 700;
    margin-bottom: 9px;
}

.bonus-star { color: #f1bc23; font-size: 15px; flex-shrink: 0; }

.register-card {
    width: 100%;
    max-width: 445px;
    margin: 0 auto;
    background: var(--register-surface);
    border: 1px solid var(--register-border);
    border-radius: 7px;
    overflow: hidden;
}

.register-card-title {
    min-height: 35px;
    border-bottom: 1px solid var(--register-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: 400;
}

.register-card-body { padding: 13px 13px 11px; }

.register-field { margin-bottom: 14px; }

.register-field label {
    display: block;
    font-size: 13px;
    line-height: 1.35;
    margin: 0 0 5px;
}

.register-field label span {
    font-size: 12px;
    color: var(--register-muted);
}

.register-field input {
    display: block;
    width: 100%;
    height: 37px;
    padding: 6px 10px;
    border: 1px solid #d7dce2;
    border-radius: 6px;
    background: #fff;
    color: #111;
    font-size: 14px;
    outline: none;
    transition: border-color .15s, box-shadow .15s;
}

.register-field input:focus {
    border-color: #7d7181;
    box-shadow: 0 0 0 3px rgba(42, 22, 49, .08);
}

.register-field small {
    display: block;
    margin-top: 5px;
    color: #c62828;
    font-size: 12px;
}

.register-terms {
    margin: 1px 0 18px;
    font-size: 11px;
    line-height: 1.45;
    color: #17131a;
}

.register-terms a { color: var(--register-blue); text-decoration: none; }
.register-terms a:hover { text-decoration: underline; }

.register-submit {
    width: 100%;
    height: 36px;
    border: 0;
    border-radius: 5px;
    background: var(--register-purple);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: background .15s, transform .05s;
}

.register-submit:hover { background: var(--register-purple-hover); }
.register-submit:active { transform: translateY(1px); }

.register-login-link {
    text-align: center;
    margin-top: 12px;
    font-size: 12px;
    padding-bottom: 10px;
}

.register-login-link a { color: var(--register-blue); text-decoration: underline; }

.register-alert {
    border-radius: 6px;
    padding: 8px 10px;
    margin-bottom: 12px;
    font-size: 13px;
}

.register-alert ul { margin: 0; padding-left: 19px; }
.register-alert-error { background: #fff0f0; border: 1px solid #f1b6b6; color: #8c1d1d; }
.register-alert-success { background: #edf9f1; border: 1px solid #a9d9b8; color: #176b32; }

/* Guide popup */
.register-guide-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(0,0,0,.42);
    display: grid;
    place-items: center;
    padding: 20px;
}

.register-guide-overlay[hidden] { display: none; }

.register-guide-modal {
    width: min(430px, 100%);
    background: #fff;
    border-radius: 12px;
    padding: 26px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,.22);
}

.register-guide-modal h3 { margin: 0 0 12px; font-size: 22px; }
.register-guide-modal p { margin: 10px 0; line-height: 1.5; color: #4a4650; }
.register-guide-close {
    position: absolute;
    right: 12px;
    top: 8px;
    border: 0;
    background: transparent;
    font-size: 29px;
    cursor: pointer;
}
.register-guide-link { display: inline-block; margin-top: 10px; color: var(--register-blue); }

/* Dark theme preserved */
body.register-dark {
    --register-bg: #151217;
    --register-surface: #211c23;
    --register-border: #48414b;
    --register-text: #f8f5fa;
    --register-muted: #c8c0cb;
    --register-yellow-bg: #3a321d;
    --register-yellow-border: #756129;
    --register-yellow-text: #ffe28a;
}

body.register-dark .register-header,
body.register-dark .register-icon-btn,
body.register-dark .register-guide-btn,
body.register-dark .register-guide-modal { background: #211c23; color: #f8f5fa; }

body.register-dark .register-field input {
    background: #171419;
    color: #fff;
    border-color: #514a54;
}

body.register-dark .register-terms { color: #f0ebf1; }

/* Small-screen fit */
@media (max-width: 600px) {
    .register-header { height: 72px; padding: 0 12px; gap: 8px; }
    .register-brand img { width: 50px; height: 50px; }
    .register-header-actions { gap: 8px; }
    .register-icon-btn { width: 48px; height: 43px; }
    .register-theme-toggle { transform: scale(.82); margin: 0 -3px; }
    .register-guide-btn { width: 82px; height: 43px; font-size: 15px; }

    .register-main { min-height: calc(100vh - 72px); padding: 9px 9px 18px; }
    .register-shell, .register-card, .register-bonus-banner { max-width: 100%; }

    .register-bonus-banner {
        min-height: 41px;
        padding: 6px 8px;
        font-size: 12px;
        margin-bottom: 8px;
    }

    .register-card-title { min-height: 35px; font-size: 16px; }
    .register-card-body { padding: 13px 13px 11px; }
    .register-field { margin-bottom: 14px; }
    .register-field label { font-size: 13px; margin-bottom: 5px; }
    .register-field input { height: 37px; font-size: 14px; }
    .register-terms { font-size: 11px; margin: 1px 0 18px; }
    .register-submit { height: 36px; font-size: 13px; }
    .register-login-link { margin-top: 12px; padding-bottom: 10px; font-size: 12px; }
}