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

html,
body,
div,
span,
applet,
object,
iframe,
h1,
h2,
h3,
h4,
h5,
h6,
p,
blockquote,
pre,
a,
abbr,
acronym,
address,
big,
cite,
code,
del,
dfn,
em,
img,
ins,
kbd,
q,
s,
samp,
small,
strike,
strong,
sub,
sup,
tt,
var,
b,
u,
i,
center,
dl,
dt,
dd,
ol,
ul,
li,
fieldset,
form,
label,
legend,
table,
caption,
tbody,
tfoot,
thead,
tr,
th,
td,
article,
aside,
canvas,
details,
embed,
figure,
figcaption,
footer,
header,
hgroup,
menu,
nav,
output,
ruby,
section,
summary,
time,
mark,
audio,
video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
    display: block;
}

ol,
ul {
    list-style: none;
}

blockquote,
q {
    quotes: none;
}

blockquote::before,
blockquote::after,
q::before,
q::after {
    content: "";
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

:root {
    --page-bg: #f5f7fb;
    --page-bg-soft: #eef3fb;
    --surface: rgba(255, 255, 255, 0.76);
    --surface-strong: rgba(255, 255, 255, 0.92);
    --surface-border: rgba(120, 136, 164, 0.22);
    --text: #111827;
    --text-muted: #667085;
    --text-soft: #8a94a6;
    --control-bg: rgba(255, 255, 255, 0.86);
    --control-border: rgba(111, 124, 145, 0.24);
    --control-border-hover: rgba(88, 101, 123, 0.38);
    --accent: #007aff;
    --accent-hover: #147efb;
    --accent-active: #0062cc;
    --danger: #ff3b30;
    --success: #34c759;
    --info: #007aff;
    --shadow: 0 28px 70px rgba(42, 56, 86, 0.14);
    --shadow-soft: 0 12px 28px rgba(42, 56, 86, 0.1);
    color-scheme: light;
}

body {
    min-height: 100vh;
    width: 100vw;
    margin: 0;
    overflow-x: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    background:
        radial-gradient(circle at 18% 16%, rgba(255, 255, 255, 0.98), transparent 28%),
        radial-gradient(circle at 82% 18%, rgba(213, 226, 248, 0.72), transparent 34%),
        linear-gradient(145deg, #fbfcff 0%, var(--page-bg) 48%, var(--page-bg-soft) 100%);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Arial, sans-serif;
    line-height: 1.45;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image: linear-gradient(rgba(255, 255, 255, 0.42) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.38) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.34), transparent 72%);
}

.container {
    position: relative;
    width: min(100%, 404px);
    display: flex;
    align-items: stretch;
    flex-direction: column;
    padding: 34px;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: 28px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(26px) saturate(1.35);
    -webkit-backdrop-filter: blur(26px) saturate(1.35);
}

.container::before {
    content: "";
    position: absolute;
    inset: 1px;
    pointer-events: none;
    border-radius: 27px;
    border: 1px solid rgba(255, 255, 255, 0.74);
}

.logo {
    display: block;
    width: 118px;
    height: 118px;
    object-fit: contain;
    align-self: center;
    margin: 0 0 18px;
    filter: drop-shadow(0 18px 28px rgba(62, 83, 117, 0.18));
}

.title {
    margin: 0 0 26px;
    color: var(--text);
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    line-height: 1.12;
}

.title.register {
    margin-bottom: 24px;
}

form,
.fields-group {
    width: 100%;
}

.form-fields {
    display: flex;
    align-items: stretch;
    gap: 26px;
}

.subtitle {
    color: var(--text);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0;
}

.divider {
    display: block;
    width: 100%;
    height: 1px;
    margin: 12px 0 18px;
    background: linear-gradient(90deg, transparent, rgba(117, 132, 158, 0.28), transparent);
}

.divider.vertical {
    width: 1px;
    height: auto;
    min-height: 188px;
    margin: 34px 0 14px;
    background: linear-gradient(180deg, transparent, rgba(117, 132, 158, 0.28), transparent);
    flex: 0 0 1px;
}

.form-field {
    width: 100%;
    margin-bottom: 16px;
}

label {
    display: block;
    margin-bottom: 7px;
    color: var(--text-muted);
    font-size: 0.83rem;
    font-weight: 600;
}

input {
    width: 100%;
    min-width: 0;
    height: 44px;
    padding: 0 14px;
    color: var(--text);
    background: var(--control-bg);
    border: 1px solid var(--control-border);
    border-radius: 12px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.78), 0 1px 2px rgba(32, 42, 60, 0.04);
    font: inherit;
    font-size: 0.96rem;
    outline: none;
    transition: border-color 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
}

input:enabled:hover {
    border-color: var(--control-border-hover);
    background: rgba(255, 255, 255, 0.94);
}

input:enabled:focus {
    border-color: rgba(0, 122, 255, 0.72);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.13), inset 0 1px 0 rgba(255, 255, 255, 0.86);
}

input:disabled {
    opacity: 0.54;
    cursor: not-allowed;
}

input.error {
    border-color: rgba(255, 59, 48, 0.84);
    box-shadow: 0 0 0 4px rgba(255, 59, 48, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.78);
}

.btn {
    width: 100%;
    min-height: 44px;
    margin-top: 2px;
    padding: 0 18px;
    color: #ffffff;
    background: linear-gradient(180deg, var(--accent-hover), var(--accent));
    border: 1px solid rgba(0, 98, 204, 0.2);
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(0, 122, 255, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.32);
    cursor: pointer;
    font: inherit;
    font-size: 0.94rem;
    font-weight: 700;
    transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease, opacity 160ms ease;
}

.btn:disabled {
    opacity: 0.54;
    cursor: not-allowed;
    box-shadow: none;
}

.btn:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 28px rgba(0, 122, 255, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.34);
}

.btn:not(:disabled):active {
    transform: translateY(0);
    background: linear-gradient(180deg, var(--accent), var(--accent-active));
}

a {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    color: var(--accent);
    text-decoration: none;
    border-radius: 999px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: color 160ms ease, background-color 160ms ease;
}

a:hover {
    color: var(--accent-active);
}

a:focus-visible {
    outline: 3px solid rgba(0, 122, 255, 0.2);
    outline-offset: 4px;
}

.toast-container {
    position: fixed;
    top: 22px;
    right: 22px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: min(340px, calc(100vw - 44px));
}

.toast-container .toast {
    width: 100%;
    height: auto;
    min-width: 150px;
    max-width: 400px;
    padding: 15px 16px;
    color: var(--text);
    text-align: left;
    word-wrap: break-word;
    background: var(--surface-strong);
    border: 1px solid var(--surface-border);
    border-radius: 16px;
    box-shadow: var(--shadow-soft);
    opacity: 0;
    backdrop-filter: blur(20px) saturate(1.25);
    -webkit-backdrop-filter: blur(20px) saturate(1.25);
    transition: opacity 240ms ease, transform 240ms ease;
    transform: translateY(-6px);
}

.toast-container .toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-container .toast.hide {
    opacity: 0;
    transform: translateY(-6px);
}

.toast-container .toast.success {
    color: #157f3b;
    background: rgba(240, 253, 244, 0.94);
    border-color: rgba(52, 199, 89, 0.28);
}

.toast-container .toast.info {
    color: #0759b8;
    background: rgba(239, 246, 255, 0.94);
    border-color: rgba(0, 122, 255, 0.26);
}

.toast-container .toast.error {
    color: #b42318;
    background: rgba(255, 241, 240, 0.94);
    border-color: rgba(255, 59, 48, 0.28);
}

@media (min-width: 781px) {
    .container.register-container {
        width: min(100%, 664px);
    }
}

@media (max-width: 780px) {
    body {
        align-items: flex-start;
        padding: 34px 18px;
    }

    .container {
        width: min(100%, 420px);
        padding: 30px 24px;
        border-radius: 24px;
    }

    .container::before {
        border-radius: 23px;
    }

    .form-fields {
        display: block;
    }

    .divider.vertical {
        display: none !important;
    }

    .subtitle {
        margin-top: 2px;
    }
}

@media (max-width: 420px) {
    body {
        min-height: 100vh;
        padding: 0;
        background: linear-gradient(180deg, #fbfcff 0%, #eef3fb 100%);
    }

    body::before {
        display: none;
    }

    .container {
        width: 100%;
        min-height: 100vh;
        justify-content: center;
        padding: 34px 24px;
        border: none;
        border-radius: 0;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.68);
    }

    .container::before {
        display: none;
    }

    .logo {
        width: 108px;
        height: 108px;
    }

    .title {
        font-size: 1.84rem;
    }

    .toast-container {
        top: 12px;
        right: 12px;
        width: calc(100vw - 24px);
    }
}