/**
 * DailyEvolve Guest Post AI - Enterprise Frontend CSS
 * Modern, professional design with premium styling
 * Version: 2.1 Enterprise Edition
 */

/* ==============================
   CSS VARIABLES & THEME COLORS
============================== */
:root {
    /* Primary Brand Colors */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --primary-subtle: #eff6ff;
    
    /* Accent Colors */
    --accent-success: #10b981;
    --accent-success-light: #d1fae5;
    --accent-danger: #ef4444;
    --accent-danger-light: #fee2e2;
    --accent-warning: #f59e0b;
    --accent-warning-light: #fef3c7;
    
    /* Neutral Colors */
    --neutral-white: #ffffff;
    --neutral-bg: #f8fafc;
    --neutral-light: #f1f5f9;
    --neutral-medium: #cbd5e1;
    --neutral-dark: #475569;
    --neutral-darker: #1e293b;
    
    /* Text Colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    
    /* Borders & Shadows */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'Monaco', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 48px;
}

/* ==============================
   GLOBAL RESETS & BASE STYLES
============================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    color: var(--text-primary);
    background-color: var(--neutral-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ==============================
   FORM CONTAINER & WRAPPER
============================== */
.de-gpai-form-wrapper {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, var(--neutral-white) 0%, var(--neutral-bg) 100%);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.de-gpai-container {
    width: 100%;
}

/* ==============================
   FORM HEADING STYLES
============================== */
.de-gpai-form-wrapper h1,
.de-gpai-form-wrapper h2 {
    margin-bottom: var(--spacing-xl);
    color: var(--neutral-darker);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.de-gpai-form-wrapper h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 600;
}

/* ==============================
   FORM GROUPS & INPUTS
============================== */
.de-gpai-form-group {
    margin-bottom: var(--spacing-xl);
}

.de-gpai-form-group label {
    display: block;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.de-gpai-form-group label span {
    color: var(--accent-danger);
    margin-left: var(--spacing-xs);
}

.de-gpai-form-group small {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: 13px;
    color: var(--text-light);
}

/* Input, Textarea, Select Base Styles */
#de-gpai-form input[type="text"],
#de-gpai-form input[type="email"],
#de-gpai-form input[type="url"],
#de-gpai-form input[type="password"],
#de-gpai-form input[type="number"],
#de-gpai-form input[type="file"],
#de-gpai-form select,
#de-gpai-form textarea,
.de-gpai-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 14px;
    font-family: var(--font-sans);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--neutral-white);
    transition: all 0.3s ease;
    color: var(--text-primary);
}

/* Input Focus State */
#de-gpai-form input[type="text"]:focus,
#de-gpai-form input[type="email"]:focus,
#de-gpai-form input[type="url"]:focus,
#de-gpai-form input[type="password"]:focus,
#de-gpai-form input[type="number"]:focus,
#de-gpai-form input[type="file"]:focus,
#de-gpai-form select:focus,
#de-gpai-form textarea:focus,
.de-gpai-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
    background-color: var(--neutral-white);
}

/* Input Disabled State */
#de-gpai-form input:disabled,
#de-gpai-form select:disabled,
#de-gpai-form textarea:disabled {
    background-color: var(--neutral-light);
    color: var(--text-light);
    cursor: not-allowed;
    opacity: 0.6;
}

/* Textarea Specific */
#de-gpai-form textarea {
    resize: vertical;
    min-height: 150px;
    line-height: 1.5;
}

/* Select Styling */
#de-gpai-form select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-lg) center;
    background-size: 20px;
    padding-right: 40px;
}

/* File Input Styling */
#de-gpai-form input[type="file"] {
    padding: var(--spacing-md);
}

#de-gpai-form input[type="file"]::file-selector-button {
    background-color: var(--primary-light);
    color: var(--neutral-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    margin-right: var(--spacing-lg);
    transition: background-color 0.3s ease;
}

#de-gpai-form input[type="file"]::file-selector-button:hover {
    background-color: var(--primary-dark);
}

/* Checkbox & Radio Styling */
#de-gpai-form input[type="checkbox"],
#de-gpai-form input[type="radio"] {
    width: auto;
    margin-right: var(--spacing-md);
    cursor: pointer;
    accent-color: var(--primary-color);
}

#de-gpai-form input[type="checkbox"] + label,
#de-gpai-form input[type="radio"] + label {
    display: inline;
    font-weight: 400;
    text-transform: none;
    letter-spacing: normal;
    margin-bottom: 0;
}

/* ==============================
   EDITOR TOOLBAR STYLES
============================== */
.de-gpai-format-toolbar {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--neutral-light);
    border-radius: 8px;
    flex-wrap: wrap;
}

.de-gpai-format-select,
.de-gpai-format-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 13px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background-color: var(--neutral-white);
    color: var(--text-primary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.de-gpai-format-select {
    width: auto;
    min-width: 140px;
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-sm) center;
    background-size: 16px;
    padding-right: 32px;
}

.de-gpai-format-button {
    background-color: var(--neutral-white);
}

.de-gpai-format-button:hover {
    background-color: var(--primary-light);
    color: var(--neutral-white);
    border-color: var(--primary-color);
}

.de-gpai-format-select:focus,
.de-gpai-format-button:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

/* ==============================
   BUTTON STYLES
============================== */
.de-gpai-button,
.de-gpai-submit-btn,
#de-gpai-form button[type="submit"],
.de-gpai-auth-submit {
    display: inline-block;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
    letter-spacing: 0.5px;
}

/* Primary Button */
.de-gpai-button-primary,
.de-gpai-submit-btn,
#de-gpai-form button[type="submit"],
.de-gpai-auth-submit {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--neutral-white);
    box-shadow: var(--shadow-md);
}

.de-gpai-button-primary:hover,
.de-gpai-submit-btn:hover,
#de-gpai-form button[type="submit"]:hover,
.de-gpai-auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.de-gpai-button-primary:active,
.de-gpai-submit-btn:active,
#de-gpai-form button[type="submit"]:active,
.de-gpai-auth-submit:active {
    transform: translateY(0);
}

/* Secondary Button */
.de-gpai-button-secondary {
    background-color: var(--neutral-light);
    color: var(--text-primary);
}

.de-gpai-button-secondary:hover {
    background-color: var(--border-color);
}

/* Danger Button */
.de-gpai-button-danger {
    background-color: var(--accent-danger);
    color: var(--neutral-white);
}

.de-gpai-button-danger:hover {
    background-color: #dc2626;
}

/* Disabled State */
#de-gpai-form button:disabled,
.de-gpai-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ==============================
   ALERT & MESSAGE BOXES
============================== */
.de-gpai-alert,
.de-gpai-success,
.de-gpai-error,
.de-gpai-warning,
.de-gpai-info {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border-radius: 8px;
    border-left: 4px solid;
    background-color: var(--neutral-light);
}

.de-gpai-success {
    background-color: var(--accent-success-light);
    border-left-color: var(--accent-success);
    color: #065f46;
}

.de-gpai-error {
    background-color: var(--accent-danger-light);
    border-left-color: var(--accent-danger);
    color: #7f1d1d;
}

.de-gpai-warning {
    background-color: var(--accent-warning-light);
    border-left-color: var(--accent-warning);
    color: #78350f;
}

.de-gpai-info {
    background-color: var(--primary-subtle);
    border-left-color: var(--primary-color);
    color: #1e3a8a;
}

/* ==============================
   AUTHENTICATION FORMS
============================== */
.de-gpai-auth-container {
    max-width: 420px;
    margin: 0 auto;
    padding: var(--spacing-3xl) var(--spacing-2xl);
    background: var(--neutral-white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.de-gpai-auth-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.de-gpai-auth-logo {
    max-width: 150px;
    height: auto;
    margin-bottom: var(--spacing-lg);
}

.de-gpai-auth-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--neutral-darker);
    margin-bottom: var(--spacing-sm);
}

.de-gpai-auth-header p {
    color: var(--text-light);
    font-size: 14px;
}

/* Auth Form */
#de-gpai-login-form,
#de-gpai-register-form {
    display: flex;
    flex-direction: column;
}

/* Auth Form Groups */
.de-gpai-auth-form-group {
    margin-bottom: var(--spacing-lg);
}

.de-gpai-auth-form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
}

.de-gpai-auth-form-group input {
    width: 100%;
    padding: 12px var(--spacing-lg);
    font-size: 14px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.de-gpai-auth-form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

/* Remember Me / Forgot Password */
.de-gpai-auth-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    font-size: 13px;
}

.de-gpai-auth-options a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.de-gpai-auth-options a:hover {
    color: var(--primary-dark);
}

/* Auth Toggle */
.de-gpai-auth-toggle {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
}

.de-gpai-auth-toggle p {
    color: var(--text-secondary);
    font-size: 14px;
}

.de-gpai-auth-toggle a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    margin-left: var(--spacing-sm);
    transition: color 0.3s ease;
}

.de-gpai-auth-toggle a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ==============================
   GUEST POST FORM SPECIFIC
============================== */
.de-gpai-section-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-color);
}

.de-gpai-section-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--neutral-darker);
    flex: 1;
}

.de-gpai-section-header .de-gpai-section-icon {
    font-size: 24px;
    margin-right: var(--spacing-lg);
    color: var(--primary-color);
}

/* Two Column Layout */
.de-gpai-two-column {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
}

@media (max-width: 768px) {
    .de-gpai-two-column {
        grid-template-columns: 1fr;
    }
}

/* Category Select */
.de-gpai-category-select {
    position: relative;
}

#de-gpai-form select[name="category"] {
    width: 100%;
}

/* Author Name & Email */
.de-gpai-author-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

@media (max-width: 768px) {
    .de-gpai-author-info {
        grid-template-columns: 1fr;
    }
}

/* Featured Image Upload */
.de-gpai-featured-image-section {
    margin-bottom: var(--spacing-xl);
}

.de-gpai-featured-image-preview {
    margin-top: var(--spacing-lg);
}

.de-gpai-featured-image-preview img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

/* Auth Required Message */
.de-gpai-auth-required {
    padding: var(--spacing-2xl);
    background: linear-gradient(135deg, var(--primary-subtle) 0%, #f0f9ff 100%);
    border: 2px solid var(--primary-light);
    border-radius: 12px;
    text-align: center;
}

.de-gpai-auth-required h3 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-lg);
}

.de-gpai-auth-required p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

.de-gpai-auth-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.de-gpai-auth-buttons button {
    flex: 1;
    min-width: 150px;
}

/* ==============================
   RESPONSIVE DESIGN
============================== */
@media (max-width: 992px) {
    .de-gpai-form-wrapper {
        padding: var(--spacing-xl);
    }
    
    .de-gpai-form-wrapper h1,
    .de-gpai-form-wrapper h2 {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .de-gpai-form-wrapper {
        padding: var(--spacing-lg);
        margin: var(--spacing-lg);
        border-radius: 8px;
    }
    
    .de-gpai-form-wrapper h1,
    .de-gpai-form-wrapper h2 {
        font-size: 20px;
    }
    
    .de-gpai-auth-container {
        margin: var(--spacing-lg);
        padding: var(--spacing-xl);
    }
    
    .de-gpai-format-toolbar {
        flex-direction: column;
    }
    
    .de-gpai-format-select {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .de-gpai-form-wrapper {
        padding: var(--spacing-md);
        margin: var(--spacing-md);
    }
    
    .de-gpai-form-group {
        margin-bottom: var(--spacing-lg);
    }
    
    .de-gpai-button,
    .de-gpai-submit-btn,
    #de-gpai-form button[type="submit"],
    .de-gpai-auth-submit {
        width: 100%;
    }
    
    .de-gpai-auth-buttons {
        flex-direction: column;
    }
    
    .de-gpai-auth-buttons button {
        width: 100%;
    }
}

/* ==============================
   UTILITY CLASSES
============================== */
.de-gpai-text-center {
    text-align: center;
}

.de-gpai-text-muted {
    color: var(--text-light);
}

.de-gpai-mt-lg {
    margin-top: var(--spacing-xl);
}

.de-gpai-mb-lg {
    margin-bottom: var(--spacing-xl);
}

.de-gpai-hidden {
    display: none !important;
}

/* ==============================
   LOADING & ANIMATION STATES
============================== */
.de-gpai-loading {
    opacity: 0.6;
    pointer-events: none;
}

.de-gpai-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==============================
   PASSWORD TOGGLE STYLES
============================== */
.de-gpai-password-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.de-gpai-password-wrapper input[type="password"],
.de-gpai-password-wrapper input[type="text"] {
    flex: 1;
    padding-right: 42px;
}

.de-gpai-password-toggle {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 18px;
    padding: 4px 6px;
    line-height: 1;
    color: var(--text-secondary);
    transition: color 0.2s ease, transform 0.2s ease;
    border-radius: 4px;
}

.de-gpai-password-toggle:hover {
    color: var(--primary-color);
    transform: scale(1.15);
}

.de-gpai-password-toggle:active {
    transform: scale(0.95);
}

.de-gpai-password-icon {
    display: inline-block;
    line-height: 1;
    user-select: none;
    pointer-events: none;
}

/* Focus state when input is focused */
.de-gpai-password-wrapper input[type="password"]:focus ~ .de-gpai-password-toggle,
.de-gpai-password-wrapper input[type="text"]:focus ~ .de-gpai-password-toggle {
    color: var(--primary-color);
}

/* Mobile optimization */
@media (max-width: 600px) {
    .de-gpai-password-toggle {
        right: 8px;
        font-size: 16px;
    }
    
    .de-gpai-password-wrapper input[type="password"],
    .de-gpai-password-wrapper input[type="text"] {
        padding-right: 36px;
    }
}

/* ==============================
   PRINT STYLES
============================== */
@media print {
    .de-gpai-form-wrapper {
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
}