/* Base Variables and Color System */
:root {
    --primary-color: #0f3c68;
    --primary-light: #18528c;
    --primary-dark: #08233f;
    --accent-color: #7a8b99;
    --accent-light: #b0c4de;
    --background-color: #f7fafb;
    --card-background: #ffffff;
    --text-main: #2c3e40;
    --text-muted: #5e7375;
    --border-color: #e1ebed;
    --success-color: #0f3c68;
    --error-color: #c62828;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 2px 8px rgba(30, 62, 67, 0.04);
    --shadow-md: 0 8px 24px rgba(30, 62, 67, 0.08);
    --shadow-lg: 0 16px 40px rgba(30, 62, 67, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Global Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
    overflow-x: hidden;
}

/* Sidebar Styling */
.brand-sidebar {
    width: 380px;
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 48px 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: fixed;
    height: 100vh;
    top: 0;
    left: 0;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    background-image: radial-gradient(circle at 100% 0%, var(--primary-light) 0%, var(--primary-color) 70%);
}

.brand-logo-container {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.brand-logo {
    max-width: 100%;
    height: auto;
}

.brand-info {
    margin-top: 40px;
    margin-bottom: auto;
}

.brand-info h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 16px;
    color: #ffffff;
}

.nif-badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-color);
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: 50px;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(155, 180, 182, 0.2);
}

.brand-description {
    color: var(--accent-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.85rem;
    color: var(--accent-light);
}

.footer-item i {
    color: var(--accent-color);
    font-size: 1rem;
    margin-top: 2px;
}

/* Workspace Container */
.form-workspace {
    margin-left: 380px;
    flex: 1;
    padding: 48px 60px;
    max-width: 1050px;
}

.workspace-header {
    margin-bottom: 40px;
}

.header-title h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.header-title p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Cards & Sections */
.signup-form {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.card {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-light);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--background-color);
}

.icon-wrapper {
    width: 40px;
    height: 40px;
    background-color: var(--background-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.2rem;
    transition: var(--transition);
}

.card:hover .icon-wrapper {
    background-color: var(--primary-color);
    color: #ffffff;
}

.section-header h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--primary-color);
}

.section-helper {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* Form Fields Grid layout */
.form-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.col-12 { grid-column: span 12; }
.col-8  { grid-column: span 8; }
.col-6  { grid-column: span 6; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }

/* Input Styling */
label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 0.2px;
}

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

input[type="text"],
input[type="email"],
input[type="tel"],
select {
    width: 100%;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text-main);
    background-color: #ffffff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: var(--transition);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(30, 62, 67, 0.08);
}

input::placeholder {
    color: #a0b0b2;
}

.input-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Membership option cards */
.membership-options {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.membership-option-card {
    display: block;
    cursor: pointer;
}

.membership-option-card input[type="radio"] {
    display: none;
}

.option-content {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px 24px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    background-color: #ffffff;
}

.membership-option-card input[type="radio"]:checked + .option-content {
    border-color: var(--primary-color);
    background-color: var(--background-color);
    box-shadow: 0 4px 12px rgba(30, 62, 67, 0.04);
}

.option-icon {
    width: 48px;
    height: 48px;
    background-color: var(--background-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 1.35rem;
    flex-shrink: 0;
    transition: var(--transition);
}

.membership-option-card input[type="radio"]:checked + .option-content .option-icon {
    background-color: var(--primary-color);
    color: #ffffff;
}

.option-title {
    display: block;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 4px;
}

.option-desc {
    display: block;
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Info Banner for Free membership */
.info-banner-free {
    display: flex;
    align-items: center;
    gap: 16px;
    background-color: #f3f7f8;
    border-left: 4px solid var(--accent-color);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
}

.info-banner-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-banner-text {
    font-size: 0.92rem;
    color: var(--text-main);
    line-height: 1.5;
}

/* Custom Checkboxes */
.gdpr-box {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 28px;
}

.checkbox-container {
    display: flex;
    position: relative;
    padding-left: 32px;
    cursor: pointer;
    user-select: none;
    align-items: flex-start;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 3px;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #ffffff;
    border: 1.5px solid var(--border-color);
    border-radius: 4px;
    transition: var(--transition);
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--accent-color);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-text {
    font-size: 0.9rem;
    color: var(--text-main);
    line-height: 1.4;
    font-weight: 400;
}

/* Signature Pad */
.signature-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.signature-pad-container {
    position: relative;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #ffffff;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 10px;
    width: 100%;
}

#signature-canvas {
    background-color: #fbfcfc;
    border-radius: var(--radius-sm);
    width: 100%;
    max-width: 600px;
    height: 180px;
    cursor: crosshair;
    touch-action: none;
    border: 1px dashed #d1e0e2;
}

#clear-signature {
    margin-top: 10px;
    align-self: flex-end;
}

.signature-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(30, 62, 67, 0.15);
}

.btn-primary:hover {
    background-color: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(30, 62, 67, 0.25);
}

.btn-secondary {
    background-color: #ffffff;
    color: var(--primary-color);
    border: 1.5px solid var(--border-color);
}

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

.btn:active {
    transform: translateY(0);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    margin-top: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

/* Modals & Overlays */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(18, 40, 43, 0.6);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-card {
    background-color: #ffffff;
    border-radius: var(--radius-lg);
    padding: 48px;
    width: 90%;
    max-width: 500px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.active .modal-card {
    transform: scale(1);
}

.modal-icon {
    width: 80px;
    height: 80px;
    background-color: #e6f0fa;
    color: var(--success-color);
    font-size: 3rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px auto;
}

.modal-card h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 12px;
}

.modal-card p {
    color: var(--text-muted);
    font-size: 0.98rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.modal-actions {
    display: flex;
    justify-content: center;
}

/* Loading Spinner */
.spinner-container {
    background-color: #ffffff;
    padding: 32px 48px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    max-width: 320px;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--background-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

#loading-text {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.95rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsiveness */
@media (max-width: 1024px) {
    .brand-sidebar {
        width: 320px;
        padding: 36px 24px;
    }
    .form-workspace {
        margin-left: 320px;
        padding: 36px 40px;
    }
}

@media (max-width: 868px) {
    .app-container {
        flex-direction: column;
    }
    .brand-sidebar {
        position: relative;
        width: 100%;
        height: auto;
        padding: 32px;
        border-right: none;
        border-bottom: 4px solid var(--accent-color);
        gap: 24px;
    }
    .brand-logo-container {
        max-width: 250px;
    }
    .brand-info {
        margin-top: 16px;
        margin-bottom: 16px;
    }
    .form-workspace {
        margin-left: 0;
        padding: 32px 20px;
        max-width: 100%;
    }
    .form-grid {
        gap: 16px;
    }
    .col-6, .col-4 {
        grid-column: span 12;
    }
    .card {
        padding: 24px;
    }
    .form-actions {
        flex-direction: column-reverse;
    }
    .form-actions .btn {
        width: 100%;
    }
}