/* ============================================
   FORM BUILDER FRONTEND - MODERN UI
   Modern form display matching React UI design
   ============================================== */

:root {
    --primary: #3b82f6;
    --primary-dark: #1e40af;
    --accent: #fbbf24;
    --success: #10b981;
    --danger: #ef4444;
    --muted: #f3f4f6;
    --muted-fg: #6b7280;
    --border: #e5e7eb;
    --text: #1f2937;
    --text-light: #6b7280;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
}

* {
    box-sizing: border-box;
}

/* ============================================
   MAIN FORM WRAPPER
   ============================================== */

.form-builder-wrapper {
    max-width: 700px;
    margin: 40px auto;
    padding: 0 20px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    animation: slideInUp 0.5s ease;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Form Card Container */
.form-builder-wrapper .form-container {
    background: white;
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border);
}

/* Form Header */
.form-builder-wrapper .form-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 32px 28px;
    text-align: center;
}

.form-title {
    margin: 0 0 12px 0;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: white;
}

.form-description {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    max-width: 600px;
}

/* Form Content */
.form-builder-frontend-form {
    padding: 32px 28px;
}

/* ============================================
   FORM GROUPS & FIELDS
   ============================================== */

.form-group {
    margin-bottom: 28px;
    animation: fadeIn 0.3s ease;
}

.form-group:last-child {
    margin-bottom: 0;
}

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

/* Labels */
.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.required {
    color: var(--danger);
    margin-left: 4px;
    font-weight: 700;
}

/* Input Fields */
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
    font-family: inherit;
    background: white;
    color: var(--text);
    transition: all 0.3s ease;
}

.form-group input[type="text"]::placeholder,
.form-group input[type="email"]::placeholder,
.form-group input[type="number"]::placeholder,
.form-group input[type="password"]::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="number"]:focus,
.form-group input[type="password"]:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    background: #f8fafc;
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.5;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 20px;
    padding-right: 40px;
}

/* ============================================
   CHECKBOX & RADIO
   ============================================== */

.form-group .checkbox-group,
.form-group .radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.form-group input[type="checkbox"],
.form-group input[type="radio"] {
    margin-right: 10px;
    cursor: pointer;
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-group input[type="checkbox"]:hover,
.form-group input[type="radio"]:hover {
    opacity: 0.8;
}

.form-group .checkbox-item,
.form-group .radio-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border-radius: 8px;
    background: var(--muted);
    transition: all 0.3s ease;
    cursor: pointer;
}

.form-group .checkbox-item:hover,
.form-group .radio-item:hover {
    background: #f0f1f3;
}

.form-group .checkbox-item label,
.form-group .radio-item label {
    display: block;
    margin: 0;
    font-weight: 500;
    cursor: pointer;
    text-transform: none;
    letter-spacing: normal;
    font-size: 14px;
    color: var(--text);
}

/* ============================================
   BUTTONS
   ============================================== */

.form-submit-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 14px 24px;
    border: none;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
    margin-top: 8px;
}

.form-submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(59, 130, 246, 0.4);
}

.form-submit-btn:active:not(:disabled) {
    transform: translateY(0);
}

.form-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-submit-btn.loading {
    position: relative;
    color: transparent;
}

.form-submit-btn.loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   MESSAGES
   ============================================== */

.form-message {
    margin-top: 20px;
    padding: 16px 20px;
    border-radius: 10px;
    display: none;
    font-size: 14px;
    font-weight: 500;
    animation: slideInDown 0.3s ease;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-message.success {
    background: #d1fae5;
    border: 2px solid var(--success);
    color: #065f46;
}

.form-message.error {
    background: #fee2e2;
    border: 2px solid var(--danger);
    color: #991b1b;
}

/* ============================================
   FIELD GROUPS
   ============================================== */

.form-group.field-group-title {
    margin-top: 32px;
    margin-bottom: 20px;
    padding-top: 24px;
    border-top: 2px solid var(--border);
}

.form-group.field-group-title label {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
}

/* ============================================
   VALIDATION MESSAGES
   ============================================== */

.field-error {
    border-color: var(--danger) !important;
    background-color: #fff5f5;
}

.field-error-message {
    color: var(--danger);
    font-size: 12px;
    margin-top: 6px;
    font-weight: 500;
}

/* ============================================
   ACCESSIBILITY
   ============================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Keyboard navigation focus visible */
.form-group input:focus-visible,
.form-group select:focus-visible,
.form-group textarea:focus-visible,
.form-submit-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================== */

@media (max-width: 768px) {
    .form-builder-wrapper {
        margin: 20px auto;
        padding: 0 16px;
    }

    .form-builder-wrapper .form-header {
        padding: 24px 20px;
    }

    .form-title {
        font-size: 22px;
    }

    .form-description {
        font-size: 13px;
    }

    .form-builder-frontend-form {
        padding: 24px 20px;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="number"],
    .form-group input[type="password"],
    .form-group textarea,
    .form-group select {
        font-size: 16px;
        padding: 12px 14px;
    }

    .form-submit-btn {
        padding: 12px 20px;
        font-size: 14px;
    }

    .form-message {
        padding: 12px 16px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .form-builder-wrapper {
        margin: 10px auto;
    }

    .form-title {
        font-size: 20px;
    }

    .form-description {
        font-size: 12px;
    }

    .form-group label {
        font-size: 13px;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="number"],
    .form-group input[type="password"],
    .form-group textarea,
    .form-group select {
        border-radius: 8px;
    }
}

/* ============================================
   DARK MODE SUPPORT (Optional)
   ============================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --text: #f3f4f6;
        --text-light: #d1d5db;
        --border: #374151;
        --muted: #1f2937;
        --muted-bg: #111827;
    }

    .form-builder-wrapper .form-container {
        background: #1f2937;
        border-color: #374151;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="number"],
    .form-group input[type="password"],
    .form-group textarea,
    .form-group select {
        background: #111827;
        color: #f3f4f6;
        border-color: #374151;
    }

    .form-group input:focus,
    .form-group select:focus,
    .form-group textarea:focus {
        background: #0f172a;
    }

    .form-group .checkbox-item,
    .form-group .radio-item {
        background: #111827;
    }

    .form-group .checkbox-item:hover,
    .form-group .radio-item:hover {
        background: #1f2937;
    }
}