/* Theme Tokens & Variables */
:root {
    --color-primary: #0B1F3B;      /* Deep Navy */
    --color-primary-hover: #16325B;
    --color-primary-light: #E7ECF3;
    --color-bg: #F4F6F8;           /* Soft Gray */
    --color-card: #FFFFFF;
    --color-text: #2D3748;
    --color-text-muted: #718096;
    --color-border: #CBD5E0;
    --color-border-focus: #4A5568;
    
    --color-error: #C53030;
    --color-error-bg: #FFF5F5;
    --color-error-border: #FEB2B2;
    
    --color-success: #2F855A;
    --color-success-bg: #F0FFF4;
    --color-success-border: #9AE6B4;
    
    --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --border-radius: 6px;
    --transition-speed: 0.18s;
}

/* Reset & Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-stack);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Top Navigation Bar */
.top-nav {
    background-color: #FFFFFF;
    border-bottom: 1px solid #E2E8F0;
    height: 60px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--color-primary);
    gap: 8px;
}

.brand:hover {
    opacity: 0.9;
}

.logo-icon {
    color: var(--color-primary);
}

.brand-text {
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

/* Main Layout & Container */
.main-content {
    padding: 40px 20px 60px 20px;
    min-height: calc(100vh - 180px);
}

.portal-container {
    max-width: 850px;
    margin: 0 auto;
}

/* White Card Panels */
.form-panel, .success-panel {
    background-color: var(--color-card);
    border: 1px solid #E2E8F0;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: 0 4px 12px rgba(11, 31, 59, 0.03), 0 1px 3px rgba(0, 0, 0, 0.02);
}

.form-header {
    margin-bottom: 32px;
}

.form-header h1 {
    font-size: 1.75rem;
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

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

/* Row-based Grid Layout */
.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    width: 100%;
}

.form-row .form-group {
    margin-bottom: 0; /* Let form-row control bottom spacing */
}

/* Grid Column Widths */
.col-4 { flex: 0 0 calc(33.333% - 13.33px); }
.col-6 { flex: 0 0 calc(50% - 10px); }
.col-8 { flex: 0 0 calc(66.666% - 6.66px); }

/* Form Controls & Inputs */
label {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: #2D3748;
}

.required-indicator {
    color: var(--color-error);
}

.optional-label, .field-hint {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-text-muted);
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--color-text);
    background-color: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    outline: none;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="date"]:focus,
select:focus,
textarea:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(74, 85, 104, 0.08);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* Custom Dropdown Styling (Select wrapper for clean chevron) */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper select {
    appearance: none;
    -webkit-appearance: none;
    padding-right: 36px;
}

.select-wrapper::after {
    content: "";
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-text-muted);
    border-bottom: 2px solid var(--color-text-muted);
    transform: translateY(-70%) rotate(45deg);
    pointer-events: none;
}

/* File Upload Field Styling */
.file-upload-area {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius);
    background-color: #F8FAFC;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.file-upload-area:hover, .file-upload-area.dragover {
    background-color: #F1F5F9;
    border-color: var(--color-border-focus);
}

.file-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.file-upload-visual {
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
}

.upload-icon {
    color: var(--color-text-muted);
    margin-bottom: 8px;
}

.visual-text {
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: 4px;
}

.browse-btn {
    color: var(--color-primary);
    font-weight: 600;
}

.selected-filename {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 500;
    margin-top: 4px;
    background-color: #E2E8F0;
    padding: 2px 8px;
    border-radius: 12px;
    max-width: 90%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

/* Custom Radio Buttons */
.contact-method-wrapper {
    display: flex;
    gap: 24px;
    margin-top: 4px;
}

.radio-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    user-select: none;
    font-size: 0.95rem;
    font-weight: 500;
}

.radio-label input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.custom-radio {
    height: 18px;
    width: 18px;
    background-color: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    margin-right: 8px;
    display: inline-block;
    position: relative;
    transition: border-color var(--transition-speed);
}

.radio-label:hover input ~ .custom-radio {
    border-color: var(--color-border-focus);
}

.radio-label input:checked ~ .custom-radio {
    background-color: #FFFFFF;
    border-color: var(--color-primary);
    border-width: 5px; /* Creates inner dot look naturally */
}

/* Button & Loading State */
.btn {
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 11px 24px;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: background-color var(--transition-speed), transform 0.1s ease;
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

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

.btn-secondary {
    background-color: #FFFFFF;
    border: 1px solid var(--color-border);
    color: var(--color-text);
}

.btn-secondary:hover {
    background-color: #F7FAFC;
    border-color: var(--color-border-focus);
}

.btn:disabled {
    background-color: var(--color-border) !important;
    color: var(--color-text-muted) !important;
    cursor: not-allowed;
    border-color: var(--color-border) !important;
}

.form-actions {
    margin-top: 32px;
}

/* Spinner */
.spinner {
    width: 16px;
    height: 16px;
    border: 2.5px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #FFFFFF;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

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

/* Error Messages (Inline & Global Banner) */
.error-message {
    color: var(--color-error);
    font-size: 0.8rem;
    margin-top: 4px;
    font-weight: 500;
    min-height: 18px;
}

input.field-error, select.field-error, textarea.field-error {
    border-color: var(--color-error) !important;
    background-color: var(--color-error-bg);
}

.file-upload-area.field-error {
    border-color: var(--color-error) !important;
    background-color: var(--color-error-bg);
}

.error-banner {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    background-color: var(--color-error-bg);
    border: 1px solid var(--color-error-border);
    border-radius: var(--border-radius);
    padding: 14px 18px;
    margin-bottom: 24px;
    color: var(--color-error);
    font-size: 0.9rem;
    font-weight: 500;
}

.error-icon {
    flex-shrink: 0;
    margin-top: 1px;
}

/* Success View Styles */
.success-panel {
    text-align: center;
    padding: 50px 40px;
}

.success-icon-container {
    width: 80px;
    height: 80px;
    background-color: var(--color-success-bg);
    border: 2px solid var(--color-success-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px auto;
    color: var(--color-success);
}

.success-panel h2 {
    color: var(--color-primary);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.success-desc {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto 36px auto;
    font-size: 0.95rem;
}

.submission-summary {
    max-width: 500px;
    margin: 0 auto 36px auto;
    background-color: #F8FAFC;
    border: 1px solid #E2E8F0;
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: left;
}

.submission-summary h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 14px;
    border-bottom: 1px solid #E2E8F0;
    padding-bottom: 8px;
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
}

.summary-table th {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    padding: 6px 0;
    width: 35%;
    vertical-align: top;
}

.summary-table td {
    font-size: 0.9rem;
    color: var(--color-text);
    padding: 6px 0 6px 12px;
    font-weight: 500;
}

.ref-code {
    font-family: monospace;
    font-size: 0.95rem !important;
    letter-spacing: 0.05em;
    color: var(--color-primary) !important;
    font-weight: 700 !important;
}

.success-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
}

/* Footer Section */
.site-footer {
    background-color: var(--color-primary);
    color: #E2E8F0;
    padding: 30px 20px;
    border-top: 1px solid #162D4E;
    font-size: 0.85rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-company p {
    color: #94A3B8;
    margin-top: 4px;
}

.footer-contact {
    display: flex;
    flex-direction: column;
    text-align: right;
}

.contact-label {
    color: #94A3B8;
    margin-bottom: 2px;
}

.contact-link {
    color: #FFFFFF;
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-speed);
}

.contact-link:hover {
    color: #93C5FD;
}

/* Utilities */
.hidden {
    display: none !important;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .form-row .form-group {
        margin-bottom: 20px;
    }
    
    .col-4, .col-6, .col-8 {
        flex: 0 0 100%;
    }
    
    .form-panel, .success-panel {
        padding: 24px;
    }
    
    .contact-method-wrapper {
        flex-direction: column;
        gap: 12px;
    }
    
    .footer-container {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    .footer-contact {
        text-align: center;
    }
}