:root {
    --bg: #f4f7fb;
    --surface: rgba(255, 255, 255, 0.92);
    --border: #dfe7f2;
    --text: #10172a;
    --muted: #667085;
    --primary: #1e5eff;
    --primary-dark: #1749e5;
    --success: #17c47f;
    --warning-bg: #fff7df;
    --warning-border: #f2d270;
    --warning-text: #8a6200;
    --error-bg: #fff1f1;
    --error-border: #f3b5b5;
    --error-text: #b42318;
    --shadow: 0 24px 70px rgba(16, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top, rgba(30, 94, 255, 0.12), transparent 32%),
        linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

a {
    color: inherit;
}

.signup-page {
    max-width: 760px;
    margin: 0 auto;
    padding: 32px 20px 72px;
}

.signup-header {
    display: flex;
    justify-content: center;
    margin-bottom: 28px;
}

.brand-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(223, 231, 242, 0.9);
    border-radius: 20px;
    padding: 14px 22px;
    box-shadow: 0 18px 40px rgba(30, 94, 255, 0.08);
}

.brand-link img {
    height: 48px;
    width: auto;
    display: block;
}

.hero {
    text-align: center;
    margin-bottom: 24px;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #fff7df;
    border: 1px solid #f6dd8f;
    color: #8a6200;
    font-weight: 700;
    font-size: 14px;
    padding: 8px 16px;
    border-radius: 999px;
}

.hero h1 {
    margin: 20px 0 14px;
    font-size: clamp(2.2rem, 5vw, 3.6rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.hero-copy {
    margin: 0 auto;
    max-width: 560px;
    color: var(--muted);
    font-size: 1.08rem;
    line-height: 1.7;
}

.hero-copy strong {
    color: var(--text);
}

.backend-notice,
.card {
    background: var(--surface);
    border: 1px solid rgba(223, 231, 242, 0.92);
    border-radius: 28px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(14px);
}

.backend-notice {
    margin-bottom: 16px;
    padding: 16px 18px;
    color: var(--warning-text);
    background: var(--warning-bg);
    border-color: var(--warning-border);
    font-size: 14px;
    line-height: 1.6;
}

.progress-card,
.form-card,
.state-card {
    padding: 28px;
}

.progress-card {
    margin-bottom: 18px;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
}

.progress-header strong {
    color: var(--text);
}

.progress-track {
    width: 100%;
    height: 12px;
    background: #e8eef7;
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    width: 0;
    height: 100%;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--primary) 0%, #5ba4ff 100%);
    transition: width 0.45s ease;
}

.progress-caption {
    margin: 14px 0 0;
    color: var(--success);
    font-weight: 700;
    font-size: 14px;
}

.form-heading {
    margin-bottom: 24px;
}

.form-heading h2 {
    margin: 0 0 8px;
    font-size: 1.55rem;
}

.form-heading p {
    margin: 0;
    color: var(--muted);
    font-size: 14px;
}

#signup-form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.field,
.terms {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field label,
.field legend {
    font-weight: 700;
    font-size: 14px;
}

.required-marker {
    color: #ff4d4f;
}

.field input:not([type="radio"]):not([type="checkbox"]),
.field select {
    width: 100%;
    min-height: 52px;
    border-radius: 16px;
    border: 1px solid #d8dfeb;
    background: #fff;
    color: var(--text);
    font: inherit;
    padding: 14px 16px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.field input:focus,
.field select:focus {
    border-color: rgba(30, 94, 255, 0.8);
    box-shadow: 0 0 0 4px rgba(30, 94, 255, 0.12);
}

.field input::placeholder {
    color: #98a2b3;
}

.field.has-error input:not([type="radio"]):not([type="checkbox"]),
.field.has-error select,
.terms.has-error .checkbox-row {
    border-color: #f04438;
    background: #fff6f6;
}

fieldset.field {
    border: 0;
    padding: 0;
    margin: 0;
}

.field-error {
    min-height: 18px;
    margin: 0;
    color: #f04438;
    font-size: 12px;
    font-weight: 600;
}

.radio-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.radio-option {
    position: relative;
    cursor: pointer;
}

.radio-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.radio-option span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 52px;
    border: 1px solid #d8dfeb;
    border-radius: 16px;
    background: #fff;
    color: var(--text);
    font-size: 15px;
    font-weight: 700;
    transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.radio-option input:checked + span {
    background: rgba(30, 94, 255, 0.08);
    border-color: rgba(30, 94, 255, 0.88);
    color: var(--text);
    transform: translateY(-1px);
}

.conditional {
    padding: 18px;
    border-radius: 20px;
    background: rgba(30, 94, 255, 0.06);
}

.checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    border: 1px solid transparent;
    border-radius: 18px;
    padding: 2px;
    cursor: pointer;
}

.checkbox-row input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary);
}

.checkbox-row span {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
}

.checkbox-row a {
    color: var(--primary);
    text-decoration: underline;
}

.submit-button,
.state-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 56px;
    border: 0;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    font: inherit;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: -0.01em;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    box-shadow: 0 18px 36px rgba(30, 94, 255, 0.22);
}

.submit-button:hover,
.state-button:hover {
    transform: translateY(-1px);
}

.submit-button:disabled {
    opacity: 0.7;
    cursor: wait;
    transform: none;
}

.security-note {
    margin: 0;
    text-align: center;
    color: var(--muted);
    font-size: 12px;
}

.feedback {
    margin-bottom: 20px;
    border-radius: 18px;
    padding: 14px 16px;
    font-size: 14px;
    line-height: 1.6;
}

.feedback.error {
    background: var(--error-bg);
    border: 1px solid var(--error-border);
    color: var(--error-text);
}

.feedback.warning {
    background: var(--warning-bg);
    border: 1px solid var(--warning-border);
    color: var(--warning-text);
}

.state-card {
    text-align: center;
}

.state-icon {
    width: 84px;
    height: 84px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    margin-bottom: 20px;
}

.success-icon {
    background: rgba(23, 196, 127, 0.12);
    color: var(--success);
}

.closed-icon {
    background: rgba(102, 112, 133, 0.12);
    color: #667085;
}

.state-card h2 {
    margin: 0 0 12px;
    font-size: 1.8rem;
}

.state-card p {
    margin: 0 auto 20px;
    max-width: 460px;
    color: var(--muted);
    line-height: 1.7;
}

.state-link {
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}

.is-hidden {
    display: none !important;
}

@media (max-width: 720px) {
    .signup-page {
        padding: 20px 14px 48px;
    }

    .grid,
    .radio-grid {
        grid-template-columns: 1fr;
    }

    .progress-card,
    .form-card,
    .state-card {
        padding: 22px 18px;
        border-radius: 24px;
    }

    .hero h1 {
        font-size: 2.4rem;
    }
}