/* ============================================
   WhatsApp Chat Widget Generator - Modern UI
   ============================================ */

:root {
    --color-primary: #25D366;
    --color-primary-dark: #128C7E;
    --color-primary-darker: #075E54;
    --color-bg: #f8fafc;
    --color-bg-card: #ffffff;
    --color-border: #e2e8f0;
    --color-text: #1e293b;
    --color-text-muted: #64748b;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
}

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--color-primary-darker) 0%, var(--color-primary-dark) 50%, var(--color-primary) 100%);
    color: white;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-md);
}

.header-content {
    max-width: 640px;
    margin: 0 auto;
}

.header-title {
    margin: 0 0 0.5rem;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header-subtitle {
    margin: 0;
    font-size: 1rem;
    opacity: 0.95;
    font-weight: 400;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 1.5rem;
}

.form-container {
    max-width: 720px;
    margin: 0 auto;
    background: var(--color-bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
}

/* Step Navigation */
.step-navigation {
    display: flex;
    background: #f1f5f9;
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem;
    gap: 0.5rem;
}

.step-tab {
    flex: 1;
    padding: 0.875rem 1rem;
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.step-tab:hover {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.8);
}

.step-tab.active-tab {
    color: white;
    background: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

/* Steps */
.step {
    display: none;
    padding: 2rem 1.5rem;
}

.step.active-step {
    display: block;
}

.step-title {
    margin: 0 0 0.25rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.step-desc {
    margin: 0 0 1.5rem;
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.step-desc code {
    font-size: 0.875em;
    padding: 0.15em 0.4em;
    background: #f1f5f9;
    border-radius: 4px;
    font-family: ui-monospace, monospace;
}

/* Form */
.generator-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-section {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--color-border);
}

.form-section:last-of-type {
    border-bottom: none;
}

.form-section-title {
    margin: 0 0 1rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group-full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-input,
.form-textarea {
    font-family: var(--font);
    font-size: 0.9375rem;
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: white;
    color: var(--color-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.2);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #94a3b8;
}

.form-textarea {
    resize: vertical;
    min-height: 80px;
}

/* jscolor override */
.jscolor {
    height: 42px !important;
    padding: 0.5rem 0.875rem !important;
    border: 1px solid var(--color-border) !important;
    border-radius: var(--radius-sm) !important;
    cursor: pointer;
}

/* Radio */
.radio-group label:first-child {
    margin-bottom: 0.5rem;
}

.radio-options {
    display: flex;
    gap: 1rem;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 500;
}

.radio-option input {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--color-primary);
}

/* Placeholder buttons */
.form-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 0.5rem;
}

.placeholder-buttons {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

/* Checkbox */
.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.9375rem;
    font-weight: 500;
}

.form-checkbox {
    width: 1.125rem;
    height: 1.125rem;
    accent-color: var(--color-primary);
}

/* Buttons */
.btn {
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: #f1f5f9;
    color: var(--color-text);
}

.btn-secondary:hover {
    background: #e2e8f0;
}

.btn-outline {
    background: white;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-outline:hover {
    background: rgba(37, 211, 102, 0.1);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

/* Generate section */
.generate-section {
    margin: 1.5rem 0;
}

.btn-generate {
    background: var(--color-primary);
    color: white;
    padding: 1rem 1.5rem;
    font-size: 1rem;
}

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

.btn-icon {
    width: 1.25rem;
    height: 1.25rem;
}

.generated-code-wrapper {
    display: none;
    margin-top: 1.5rem;
}

.success-message {
    color: var(--color-success);
    font-size: 0.9375rem;
    font-weight: 500;
    margin: 0 0 0.75rem;
}

.code-block {
    position: relative;
    background: #1e293b;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.code-block pre {
    margin: 0;
    padding: 1.25rem 1rem 3.5rem;
    font-family: ui-monospace, 'SF Mono', Monaco, monospace;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: #e2e8f0;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}

.btn-copy {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    color: white;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-copy:hover {
    background: rgba(255, 255, 255, 0.25);
}

.btn-copy.copied {
    background: var(--color-success);
}

/* Footer */
.footer {
    padding: 1.5rem;
    text-align: center;
    border-top: 1px solid var(--color-border);
    background: white;
}

.footer-back {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.footer-back:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 640px) {
    .header {
        padding: 1.5rem 1rem;
    }

    .header-title {
        font-size: 1.5rem;
    }

    .main-content {
        padding: 1rem;
    }

    .step-navigation {
        flex-direction: column;
    }

    .step {
        padding: 1.5rem 1rem;
    }

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

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}