/* Color Palette & Global Reset */
:root {
    --color-background: #fcfcfd;
    --color-card-bg: #ffffff;
    --color-text-main: #1f2937;
    --color-text-muted: #6b7280;
    --color-primary: #10b981; /* Premium Emerald */
    --color-primary-hover: #059669;
    --color-border: #e5e7eb;
    --color-focus: #a7f3d0;
    --color-alert-bg: #f9fafb;
    --border-radius: 8px;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-background);
    color: var(--color-text-main);
    line-height: 1.6;
    padding: 60px 20px;
    -webkit-font-smoothing: antialiased;
}

.form-wrapper {
    max-width: 680px;
    margin: 0 auto;
}

/* Header Styling */
.form-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo-area {
    margin-bottom: 16px;
}

.form-logo {
    max-height: 50px;
    object-fit: contain;
}

.form-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #111827;
    margin-bottom: 6px;
}

.form-subtitle {
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.required-warning {
    display: inline-block;
    margin-top: 10px;
    font-size: 0.8rem;
    color: #dc2626;
}

/* Section Card Structural Blocks */
fieldset.form-card {
    border: 1px solid var(--color-border);
    background-color: var(--color-card-bg);
    border-radius: var(--border-radius);
    padding: 32px;
    margin-bottom: 24px;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: #111827;
    padding: 0 8px;
    margin-left: -8px;
}

/* Inputs Layout Rows & Components */
.input-row {
    display: flex;
    flex-direction: column;
    margin-top: 20px;
}

.input-row:first-of-type {
    margin-top: 12px;
}

.input-row label, .group-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: #111827;
    margin-bottom: 6px;
}

.label-note {
    font-weight: 400;
    color: var(--color-text-muted);
}

.input-row input[type="text"],
.input-row input[type="email"],
.input-row input[type="tel"],
.input-row select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: 0.95rem;
    background-color: #fff;
    color: var(--color-text-main);
    outline: none;
    transition: border-color 0.1s ease, box-shadow 0.1s ease;
}

.input-row input:focus,
.input-row select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus);
}

/* Structural Layout Grids */
.input-grid {
    display: grid;
    gap: 16px;
}

.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-1-3 { grid-template-columns: 1fr 3fr; }
.grid-1-1 { grid-template-columns: 1fr 1fr; }

/* Interactive Radio Stack Cards */
.radio-stack {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.selection-box {
    display: block;
    position: relative;
    cursor: pointer;
}

.selection-box input {
    position: absolute;
    opacity: 0;
}

.selection-content {
    display: flex;
    flex-direction: column;
    padding: 14px 16px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background-color: #fff;
    transition: background-color 0.1s ease, border-color 0.1s ease;
}

.selection-box input:checked ~ .selection-content {
    border-color: var(--color-primary);
    background-color: #f0fdf4; /* Very light subtle emerald tint */
}

.selection-content .title {
    font-size: 0.9rem;
    font-weight: 500;
}

.selection-content .description {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* Modernized Radio Option Pills */
.pill-group {
    display: flex;
    gap: 8px;
}

.pill-option {
    cursor: pointer;
}

.pill-option input {
    position: absolute;
    opacity: 0;
}

.pill-text {
    display: inline-block;
    padding: 8px 18px;
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.1s ease;
}

.pill-option input:checked ~ .pill-text {
    background-color: var(--color-text-main);
    border-color: var(--color-text-main);
    color: #fff;
}

/* Nested Student & Helper Blocks */
.sub-alert-box {
    background-color: var(--color-alert-bg);
    border: 1px solid var(--color-border);
    padding: 20px;
    border-radius: 6px;
    margin-top: 20px;
}

.sub-instruction {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

/* Modern Minimalist File Drag & Drop Field Boxes */
.file-upload-zone {
    position: relative;
    border: 1.5px dashed var(--color-border);
    border-radius: 6px;
    padding: 24px;
    text-align: center;
    background-color: #fff;
    cursor: pointer;
    transition: border-color 0.1s ease;
}

.file-upload-zone:hover {
    border-color: var(--color-text-muted);
}

.file-upload-zone input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-zone-prompt {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.upload-zone-prompt .primary-text {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
}

.upload-zone-prompt .secondary-text {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Subscription Pricing Summary Blocks */
.price-index-table {
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 20px;
    background-color: var(--color-alert-bg);
    margin-top: 12px;
}

.table-heading {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--color-text-main);
    margin-bottom: 10px;
}

.rate-lines {
    list-style: none;
    font-size: 0.9rem;
}

.rate-lines li {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px dashed var(--color-border);
}

.rate-lines li:last-of-type {
    border-bottom: none;
}

.table-footer-note {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 12px;
    line-height: 1.4;
}

/* Ready to Pay Gate Styling */
.declaration-gate-panel {
    margin-top: 24px;
}

.gate-notice-text {
    font-size: 0.85rem;
    color: #7f1d1d;
    background-color: #fef2f2;
    border: 1px solid #fee2e2;
    padding: 16px;
    border-radius: 6px;
    margin-bottom: 12px;
}

.gate-checkbox-label {
    display: block;
    cursor: pointer;
}

.gate-checkbox-label input {
    position: absolute;
    opacity: 0;
}

.gate-button {
    display: block;
    text-align: center;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    background-color: #fff;
    transition: all 0.1s ease;
}

.gate-checkbox-label input:checked ~ .gate-button {
    background-color: #fef2f2;
    border-color: #f87171;
    color: #dc2626;
}

/* Dynamic Banking Info Matrix Layout Box */
.banking-details-block {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px dashed var(--color-border);
}

.monetary-field {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-tag {
    position: absolute;
    left: 14px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.monetary-field input {
    padding-left: 32px !important;
}

.bank-account-details {
    background-color: #fff;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    padding: 14px 16px;
    font-size: 0.8rem;
    color: var(--color-text-main);
}

.bank-title {
    font-weight: 600;
    margin-bottom: 4px;
    color: #111827;
}

/* Footer Submission Handling Elements */
.form-action-footer {
    margin-top: 40px;
    text-align: center;
}

.primary-submit-btn {
    width: 100%;
    padding: 14px;
    background-color: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.1s ease;
}

.primary-submit-btn:hover {
    background-color: var(--color-primary-hover);
}

.technical-support-text {
    margin-top: 24px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Utility State Rules */
.hidden { display: none !important; }
.mt-20 { margin-top: 20px; }

.dynamic-fade {
    animation: fadeInSlide 0.2s ease-out forwards;
}

@keyframes fadeInSlide {
    from { opacity: 0; transform: translateY(3px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive Structural Media Rules */
@media (max-width: 640px) {
    fieldset.form-card { padding: 20px; }
    .input-grid { grid-template-columns: 1fr; }
    .pill-group { flex-direction: column; }
}