/* ============================================
   Caligri Onboarding System — Main Stylesheet
   Apple-esque, light diffusion aesthetic
   ============================================ */

:root {
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --text-tertiary: #86868b;
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-tertiary: #fafafa;
    --border: #d2d2d7;
    --border-light: #e8e8ed;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --error: #ff3b30;
    --error-bg: #fff2f1;
    --success: #34c759;
    --success-bg: #f0faf3;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.04), 0 0 60px rgba(0, 0, 0, 0.02);
    --shadow-hover: 0 4px 30px rgba(0, 0, 0, 0.06), 0 0 80px rgba(0, 0, 0, 0.03);
    --font: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Inter', 'Segoe UI', sans-serif;

}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    background: var(--bg-primary);
    /* Soft radial glow — diffused light effect */
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(255,255,255,0.9) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 30% 20%, rgba(255,255,255,0.5) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 70% 30%, rgba(255,255,255,0.4) 0%, transparent 50%);
}

/* Language switcher */
.lang-switcher {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.15rem;
    padding: 0 1.5rem 1rem;
    max-width: 700px;
    margin: 0 auto;
}

.lang-switcher a,
.lang-switcher .lang-active {
    font-size: 0.7rem;
    font-family: var(--font);
    letter-spacing: 0.03em;
    padding: 0.15rem 0.35rem;
    border-radius: 3px;
    text-decoration: none;

}

.lang-switcher a {
    color: var(--text-tertiary);
}

.lang-switcher a:hover {
    color: var(--text-primary);
    background: var(--border-light);
}

.lang-switcher .lang-active {
    color: var(--text-primary);
    font-weight: 600;
}

/* Logo */
.logo-container {
    text-align: center;
    padding: 3rem 1rem 1.5rem;
}

.logo-container img {
    max-width: 160px;
    height: auto;
}

/* Card */
.card {
    max-width: 700px;
    margin: 0 auto 3rem;
    padding: 3rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);

}

.card:hover {
    box-shadow: var(--shadow);
}

.card-narrow {
    max-width: 420px;
}

/* Typography */
h1 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

/* Customer Type Toggle */
.toggle-group {
    display: flex;
    background: var(--bg-primary);
    border-radius: var(--radius);
    padding: 4px;
    margin-bottom: 1.5rem;
    position: relative;
}

.toggle-btn {
    flex: 1;
    padding: 0.65rem 1.5rem;
    border: none;
    background: transparent;
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
    position: relative;
    z-index: 1;
}

.toggle-btn.active {
    background: var(--bg-secondary);
    color: var(--text-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
}

.toggle-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* Sections */
.form-section {
    margin-bottom: 1.5rem;
}

.form-section-title {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-tertiary);
    margin-bottom: 0.75rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-light);
}

/* Form Groups */
.form-group {
    margin-bottom: 0.9rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.85rem;
    align-items: start;
}

.form-grid-tiles {
    columns: 2;
    column-gap: 0.85rem;
}

.form-grid-tiles > .form-group {
    break-inside: avoid;
    margin-bottom: 0.85rem;
}

.form-row-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 0.85rem;
}

/* Additional number: label narrower, value wider */
.form-row-label-value {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 0.85rem;
    align-items: end;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.15rem;
}

label .required {
    color: var(--error);
    margin-left: 2px;
}

/* Hint text: below the input field */
.hint {
    display: block;
    font-weight: 400;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    margin-top: 0.25rem;
}

/* Checkbox row */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 0.9rem;
}

.checkbox-group input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin-top: 2px;
    flex-shrink: 0;
    accent-color: var(--text-primary);
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.875rem;
}

/* Inputs */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="password"],
select,
textarea {
    width: 100%;
    padding: 0.7rem 0.9rem;
    font-family: var(--font);
    font-size: 0.95rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);

    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.12);
}

input.error,
select.error,
textarea.error {
    border-color: var(--error);
}

input.error:focus,
select.error:focus,
textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.12);
}

select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%236e6e73'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.9rem center;
    padding-right: 2.5rem;
}

textarea {
    min-height: 100px;
    resize: vertical;
}

::placeholder {
    color: var(--text-tertiary);
}

/* Input with action button (EORI check) */
.input-with-action {
    display: flex;
    gap: 0.5rem;
    align-items: stretch;
}

.input-with-action input {
    flex: 1;
    min-width: 0;
}

.btn-check-external,
.btn-check-eori,
.btn-check-vat,
.btn-check-crn,
.btn-check-uk-vat,
.btn-check-uid {
    padding: 0.5rem 0.85rem;
    font-family: var(--font);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;

    white-space: nowrap;
    flex-shrink: 0;
}

.btn-check-external:hover,
.btn-check-eori:hover,
.btn-check-vat:hover,
.btn-check-crn:hover,
.btn-check-uk-vat:hover,
.btn-check-uid:hover {
    color: var(--text-primary);
    background: var(--border-light);
    border-color: var(--text-tertiary);
}

.btn-check-eori:disabled,
.btn-check-vat:disabled,
.btn-check-crn:disabled,
.btn-check-uk-vat:disabled,
.btn-check-uid:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-check-eori.checking {
    color: var(--text-tertiary);
}

/* EORI validation result */
.eori-result {
    margin-top: 0.35rem;
    font-size: 0.8rem;
    line-height: 1.5;
    border-radius: var(--radius-sm);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.eori-result:empty {
    display: none;
}

.eori-result.valid {
    color: #1a7d36;
    background: var(--success-bg);
    padding: 0.5rem 0.75rem;
}

.eori-result.valid-no-address {
    color: #5a6e1a;
    background: #f5f9e7;
    padding: 0.5rem 0.75rem;
}

.eori-result.invalid {
    color: var(--error);
    background: var(--error-bg);
    padding: 0.5rem 0.75rem;
}

.eori-result.service-error {
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 0.5rem 0.75rem;
}

.eori-result .eori-detail {
    display: block;
    font-size: 0.75rem;
    color: inherit;
    opacity: 0.85;
}

.eori-result.mismatch {
    color: #7d5a00;
    background: #fef9e7;
    border: 1px solid #f0d56c;
    padding: 0.6rem 0.75rem;
}

/* Comparison table inside mismatch */
.eori-comparison {
    margin: 0.4rem 0;
    font-size: 0.75rem;
}

.eori-comp-row {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    padding: 0.15rem 0;
    flex-wrap: wrap;
}

.eori-comp-label {
    font-weight: 600;
    min-width: 100px;
    flex-shrink: 0;
}

.eori-comp-yours {
    text-decoration: line-through;
    opacity: 0.6;
}

.eori-comp-arrow {
    opacity: 0.5;
}

.eori-comp-official {
    font-weight: 600;
    color: var(--success);
}

/* Adopt button */
.btn-adopt-eori {
    display: inline-block;
    margin-top: 0.5rem;
    padding: 0.4rem 0.85rem;
    font-family: var(--font);
    font-size: 0.78rem;
    font-weight: 500;
    color: #fff;
    background: var(--text-primary);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;

}

.btn-adopt-eori:hover {
    background: #000;

    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* EORI skip warning (above submit button) */
.eori-skip-warning {
    margin-top: 1rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.eori-skip-inner {
    background: #fef9e7;
    border: 1px solid #f0d56c;
    color: #7d5a00;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    line-height: 1.5;
}

.eori-skip-inner strong {
    display: block;
    margin-bottom: 0.5rem;
}

.btn-skip-eori {
    display: inline-block;
    padding: 0.4rem 1rem;
    font-family: var(--font);
    font-size: 0.8rem;
    font-weight: 500;
    color: #7d5a00;
    background: transparent;
    border: 1px solid #d4a800;
    border-radius: var(--radius-sm);
    cursor: pointer;

}

.btn-skip-eori:hover {
    background: #fdf0c4;
    border-color: #b89200;
}

/* Error messages */
.field-error {
    font-size: 0.8rem;
    color: var(--error);
    margin-top: 0.3rem;
    display: block;
}

/* Business fields toggle */
.business-fields {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease, opacity 0.3s ease;
}

.business-fields.visible {
    max-height: 2000px;
    opacity: 1;
}

/* Submit button */
.btn-primary {
    display: block;
    width: 100%;
    padding: 0.85rem 2rem;
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 500;
    color: #ffffff;
    background: var(--text-primary);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;

    margin-top: 1.5rem;
}

.btn-primary:hover {
    background: #000000;

    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-primary:active {

}

.btn-secondary {
    display: inline-block;
    padding: 0.65rem 1.5rem;
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--accent);
    background: transparent;
    border: none;
    cursor: pointer;

    text-decoration: none;
}

.btn-secondary:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Flash messages */
.flash {
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
}

.flash-error {
    background: var(--error-bg);
    color: var(--error);
}

.flash-success {
    background: var(--success-bg);
    color: #1a7d36;
}

/* Thank you page */
.thankyou-content {
    text-align: center;
    padding: 2rem 0;
}

.thankyou-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.thankyou-icon svg {
    width: 32px;
    height: 32px;
    color: var(--success);
}

.thankyou-content h1 {
    margin-bottom: 1rem;
}

.thankyou-content p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto 2rem;
}

/* Honeypot - hidden from users */
.ohnohoney {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    overflow: hidden;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 1rem;
    color: var(--text-tertiary);
    font-size: 0.8rem;
}

.site-footer a {
    color: var(--text-tertiary);
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--text-secondary);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .logo-container {
        padding: 2rem 1rem 1rem;
    }

    .logo-container img {
        max-width: 120px;
    }

    .card {
        margin: 0 1rem 2rem;
        padding: 1.75rem;
        border-radius: var(--radius);
    }

    h1 {
        font-size: 1.6rem;
    }

    .form-row,
    .form-row-3 {
        grid-template-columns: 1fr;
    }

    .form-grid-tiles {
        columns: 1;
    }

    .toggle-btn {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 380px) {
    .card {
        margin: 0 0.5rem 1.5rem;
        padding: 1.25rem;
    }
}