/* Updated CSS for AI-Powered Newsletter Generator - Iteration 3 - Enhanced UI and UX */

/* Color Palette */
:root {
    --primary-color: #007bff;
    --primary-color-dark: #0056b3;
    --secondary-color: #6c757d;
    --secondary-color-dark: #545b62;
    --accent-color: #28a745;
    --accent-color-dark: #1e7e34;
    --background-light: #f8f9fa;
    --background-dark: #e9ecef;
    --text-dark: #343a40;
    --text-light: #6c757d;
    --border-color: #dee2e6;
    --white: #ffffff;
    --error-color: #dc3545;
    --success-color: #28a745;
    --warning-color: #ffc107;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--background-light);
    padding: 20px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 30px;
    background-color: var(--white);
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color-dark);
    margin-bottom: 1.2rem;
    line-height: 1.3;
}

h1 {
    font-size: 2.8rem;
    text-align: center;
}

h2 {
    font-size: 2.2rem;
    margin-top: 2rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.7rem;
}

h3 {
    font-size: 1.8rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1.3rem;
    color: var(--text-light);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--primary-color-dark);
    text-decoration: underline;
}

/* Header Styles */
header {
    text-align: center;
    padding: 3rem 0;
    background-color: var(--background-dark);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 3rem;
}

header h1 {
    color: var(--primary-color);
}

header p {
    color: var(--secondary-color);
    font-style: italic;
    margin-top: 0.5rem;
}

/* Main Content Styles */
main {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

section {
    padding: 2rem;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-color);
}

section h2 {
    margin-top: 0;
}

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

.form-group {
    margin-bottom: 1.2rem;
}

label {
    display: block;
    margin-bottom: 0.6rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-hint {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-top: 0.3rem;
    display: block;
}

input[type="text"],
input[type="email"],
input[type="file"],
input[type="url"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
input[type="tel"],
input[type="password"],
textarea,
select {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-dark);
    background-color: var(--white);
    transition: border-color 0.3s ease;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="file"]:focus,
input[type="url"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
input[type="tel"]:focus,
input[type="password"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}

textarea {
    resize: vertical;
    min-height: 150px;
}

select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
}

select:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.25);
}


/* Button Styles */
button, .button {
    display: inline-block;
    padding: 1rem 2.2rem;
    border: none;
    border-radius: 8px;
    background-color: var(--primary-color);
    color: var(--white);
    font-size: 1.1rem;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    font-family: inherit;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    line-height: 1.1;
}

button:hover, .button:hover {
    background-color: var(--primary-color-dark);
    transform: translateY(-2px);
}

button:active, .button:active {
    background-color: var(--primary-color-darker);
    transform: translateY(0);
}

button:focus, .button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.5);
}

button.secondary, .button.secondary {
    background-color: var(--secondary-color);
}

button.secondary:hover, .button.secondary:hover {
    background-color: var(--secondary-color-dark);
}

button.accent, .button.accent {
    background-color: var(--accent-color);
}

button.accent:hover, .button.accent:hover {
    background-color: var(--accent-color-dark);
}

button.error, .button.error {
    background-color: var(--error-color);
}

button.error:hover, .button.error:hover {
    background-color: darken(var(--error-color), 10%); /* Assuming darken function exists or replace with actual darker color */
}

button:disabled,
button.disabled,
.button:disabled,
.button.disabled {
    background-color: var(--border-color);
    color: var(--text-light);
    cursor: not-allowed;
    pointer-events: none;
    opacity: 0.8;
}


#generate-button {
    background-color: var(--accent-color);
}

#generate-button:hover {
    background-color: var(--accent-color-dark);
}

/* Customization Options Styles */
#customization-options p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

#template-selector, #color-palette, #font-family {
    width: 100%;
}

/* Newsletter Preview Styles */
#newsletter-preview {
    background-color: var(--background-light);
    border: 2px dashed var(--border-color);
    border-radius: 8px;
}

#newsletter-preview #preview-container {
    padding: 2rem;
    min-height: 200px; /* Ensure some minimum height for preview area */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

#newsletter-preview #preview-container p {
    font-style: italic;
    color: var(--secondary-color);
}

#newsletter-preview h2 {
    border-bottom: none;
    margin-top: 0;
    text-align: center;
}

.newsletter-preview-content {
    width: 100%;
    max-width: 600px; /* Example max width for newsletter content */
    padding: 2rem;
    background-color: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    font-family: 'Georgia', serif; /* Example serif font for newsletter content */
    text-align: left;
}

.newsletter-preview-content h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.newsletter-preview-content p {
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.newsletter-preview-content ul {
    padding-left: 25px;
    margin-bottom: 1rem;
}

.newsletter-preview-content li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
    list-style-type: disc;
}

.newsletter-preview-content hr {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 1.5rem 0;
}

.newsletter-preview-content .branding {
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.newsletter-preview-content .footer {
    font-size: 0.9rem;
    color: var(--secondary-color);
    text-align: center;
    margin-top: 1rem;
}


/* Action Buttons Styles */
#action-buttons {
    text-align: center;
    margin-top: 2rem;
}

#action-buttons button {
    margin: 0.6rem;
}

/* Footer Styles */
footer {
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 3rem;
    color: var(--secondary-color);
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* Accessibility Enhancements */
/* Focus states are already handled in input and button styles */

/* Error and Success States */
.form-group.error input,
.form-group.error textarea,
.form-group.error select {
    border-color: var(--error-color);
    box-shadow: 0 0 0 2px rgba(220, 53, 69, 0.25);
}

.form-group.error .form-hint {
    color: var(--error-color);
    font-weight: bold;
}

.form-group.success input,
.form-group.success textarea,
.form-group.success select {
    border-color: var(--success-color);
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.25);
}

.form-group.success .form-hint {
    color: var(--success-color);
}


/* Responsive adjustments */
@media (max-width: 768px) {
    body {
        padding: 15px;
    }

    .container {
        padding: 20px;
        border-radius: 10px;
    }

    h1 {
        font-size: 2.4rem;
    }

    h2 {
        font-size: 1.9rem;
        margin-top: 1.8rem;
    }

    h3 {
        font-size: 1.6rem;
    }

    h4 {
        font-size: 1.3rem;
    }

    header {
        padding: 2rem 0;
        margin-bottom: 2rem;
    }

    main {
        gap: 2rem;
    }

    section {
        padding: 1.5rem;
        border-radius: 7px;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    label {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }

    input[type="text"],
    input[type="email"],
    input[type="file"],
    input[type="url"],
    input[type="number"],
    input[type="date"],
    input[type="datetime-local"],
    input[type="tel"],
    input[type="password"],
    textarea,
    select {
        padding: 0.9rem;
        font-size: 0.95rem;
    }

    button, .button {
        padding: 0.9rem 2rem;
        font-size: 1rem;
        border-radius: 7px;
    }

    #newsletter-preview #preview-container {
        padding: 1.5rem;
    }

    .newsletter-preview-content {
        padding: 1.5rem;
    }
}

@media (max-width: 576px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 15px;
        border-radius: 8px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.7rem;
        margin-top: 1.5rem;
    }

    h3 {
        font-size: 1.4rem;
    }

    h4 {
        font-size: 1.2rem;
    }

    header {
        padding: 1.5rem 0;
        margin-bottom: 1.5rem;
    }

    main {
        gap: 1.5rem;
    }

    section {
        padding: 1rem;
        border-radius: 6px;
    }

    .form-group {
        margin-bottom: 0.8rem;
    }

    label {
        font-size: 0.9rem;
        margin-bottom: 0.4rem;
    }

    input[type="text"],
    input[type="email"],
    input[type="file"],
    input[type="url"],
    input[type="number"],
    input[type="date"],
    input[type="datetime-local"],
    input[type="tel"],
    input[type="password"],
    textarea,
    select {
        padding: 0.8rem;
        font-size: 0.9rem;
    }

    button, .button {
        padding: 0.8rem 1.8rem;
        font-size: 0.9rem;
        border-radius: 6px;
    }

    #newsletter-preview #preview-container {
        padding: 1rem;
    }
    .newsletter-preview-content {
        padding: 1rem;
    }
}