:root {
    --kx-teal: #12D6C5;
    --kx-cyan: #19B8E8;
    --kx-blue: #2F6BFF;
    --kx-purple: #7B2CFF;

    --kx-bg: #F4F8FB;
    --kx-surface: #FFFFFF;
    --kx-border: #DCE7F2;

    --kx-text: #0F172A;
    --kx-text-soft: #64748B;

    --kx-success: #10B981;
    --kx-danger: #EF4444;

    --kx-shadow:
        0 10px 30px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;

    font-family:
        Inter,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background:
        radial-gradient(
            circle at top left,
            rgba(18, 214, 197, 0.12),
            transparent 30%
        ),
        radial-gradient(
            circle at bottom right,
            rgba(123, 44, 255, 0.10),
            transparent 35%
        ),
        var(--kx-bg);

    color: var(--kx-text);
    min-height: 100vh;
}

.page-shell {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 32px 20px;
}

.auth-layout.compact {
    width: 100%;
    max-width: 460px;
}

.auth-card {
    position: relative;
    overflow: hidden;

    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);

    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 28px;

    padding: 36px 32px;

    box-shadow: var(--kx-shadow);
}

.auth-card::before {
    content: "";

    position: absolute;
    inset: 0;

    background:
        linear-gradient(
            135deg,
            rgba(18, 214, 197, 0.08),
            rgba(47, 107, 255, 0.05),
            rgba(123, 44, 255, 0.08)
        );

    pointer-events: none;
}

.card-kicker,
.card-title,
.card-copy,
.mb-3,
.divider,
.link-row,
.alert,
.google-btn,
form {
    position: relative;
    z-index: 1;
}

.card-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;

    padding: 8px 14px;

    border-radius: 999px;

    background: rgba(18, 214, 197, 0.12);

    color: var(--kx-blue);

    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;

    margin-bottom: 20px;
}

.card-title {
    margin: 0;

    font-size: 2rem;
    line-height: 1.15;
    font-weight: 800;

    color: var(--kx-text);
}

.card-copy {
    margin-top: 14px;
    margin-bottom: 28px;

    color: var(--kx-text-soft);

    font-size: 0.98rem;
    line-height: 1.6;
}

.mb-3 {
    margin-bottom: 20px;
}

.form-label {
    display: block;

    margin-bottom: 10px;

    font-size: 0.92rem;
    font-weight: 600;

    color: var(--kx-text);
}

.input-shell {
    position: relative;
}

.input-icon {
    position: absolute;

    top: 50%;
    left: 16px;

    transform: translateY(-50%);

    color: #94A3B8;

    pointer-events: none;
}

.form-control {
    width: 100%;

    border: 1px solid var(--kx-border);
    background: rgba(255, 255, 255, 0.88);

    border-radius: 16px;

    padding:
        15px
        16px
        15px
        46px;

    font-size: 1rem;

    color: var(--kx-text);

    outline: none;

    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease,
        transform 0.2s ease;
}

.form-control::placeholder {
    color: #94A3B8;
}

.form-control:focus {
    border-color: var(--kx-cyan);

    box-shadow:
        0 0 0 4px rgba(25, 184, 232, 0.14);

    transform: translateY(-1px);
}

.btn {
    border: none;
    border-radius: 16px;

    padding: 15px 18px;

    font-size: 0.96rem;
    font-weight: 700;

    cursor: pointer;

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        opacity 0.2s ease,
        background-color 0.2s ease;

    text-decoration: none;

    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background:
        linear-gradient(
            135deg,
            var(--kx-teal),
            var(--kx-blue),
            var(--kx-purple)
        );

    color: white;

    box-shadow:
        0 12px 24px rgba(47, 107, 255, 0.24);
}

.btn-primary:hover {
    box-shadow:
        0 16px 32px rgba(47, 107, 255, 0.32);
}

.google-btn {
    background: #FFFFFF;

    color: #3C4043;

    border: 1px solid #DADCE0;

    gap: 12px;

    box-shadow:
        0 1px 2px rgba(60, 64, 67, 0.08),
        0 1px 3px rgba(60, 64, 67, 0.16);
}

.google-btn:hover {
    background: #F8FAFF;

    border-color: #C6DAFC;

    box-shadow:
        0 4px 12px rgba(66, 133, 244, 0.18);
}

.google-btn:focus-visible {
    outline: none;

    box-shadow:
        0 0 0 4px rgba(66, 133, 244, 0.22);
}

.google-logo {
    width: 18px;
    height: 18px;
}

.w-100 {
    width: 100%;
}

.mt-3 {
    margin-top: 16px;
}

.btn-content {
    display: flex;
    align-items: center;
    justify-content: center;

    gap: 10px;
}

.btn-arrow {
    font-size: 0.92rem;
}

.btn-spinner {
    width: 16px;
    height: 16px;

    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: white;

    border-radius: 50%;

    animation: spin 0.8s linear infinite;

    display: none;
}

button.loading .btn-spinner {
    display: inline-block;
}

button.loading .btn-label {
    opacity: 0.85;
}

.alert {
    display: flex;
    align-items: center;
    gap: 10px;

    padding: 14px 16px;

    border-radius: 14px;

    margin-bottom: 22px;

    font-size: 0.92rem;
}

.alert-danger {
    background: rgba(239, 68, 68, 0.10);

    border: 1px solid rgba(239, 68, 68, 0.18);

    color: #B91C1C;
}

.divider {
    display: flex;
    align-items: center;

    margin: 26px 0 8px;
}

.divider::before,
.divider::after {
    content: "";

    flex: 1;

    height: 1px;

    background: rgba(148, 163, 184, 0.25);
}

.divider span {
    padding: 0 14px;

    color: var(--kx-text-soft);

    font-size: 0.88rem;
}

.link-row {
    margin-top: 26px;

    text-align: center;

    font-size: 0.94rem;
}

.link-muted {
    color: var(--kx-text-soft);
}

.link-row a {
    color: var(--kx-blue);

    font-weight: 600;

    text-decoration: none;

    margin-left: 6px;
}

.link-row a:hover {
    opacity: 0.85;
}

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

@media (max-width: 540px) {
    .auth-card {
        padding: 28px 22px;
        border-radius: 24px;
    }

    .card-title {
        font-size: 1.7rem;
    }

    .card-copy {
        font-size: 0.94rem;
    }
}