/* ============================================
   ATS Resume Builder Pro - State-of-the-Art UI
   Modern, Professional, Unforgettable Design
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Fraunces:wght@600;700;800&display=swap');

:root {
    /* Color System - Sophisticated Navy & Emerald */
    --primary-900: #0f172a;
    --primary-800: #1e293b;
    --primary-700: #334155;
    --primary-600: #475569;
    --primary-500: #64748b;
    
    --accent-600: #059669;
    --accent-500: #10b981;
    --accent-400: #34d399;
    
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    /* Neutrals */
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-display: 'Fraunces', serif;
    --font-body: 'DM Sans', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

/* ============================================
   Base Styles & Reset
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--gray-800);
    background: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Main Container - Elegant Layout
   ============================================ */

.ats-resume-builder-wrapper {
    min-height: 100vh;
    padding: var(--space-2xl) var(--space-lg);
    background: 
        linear-gradient(135deg, rgba(15, 23, 42, 0.03) 0%, transparent 100%),
        radial-gradient(circle at 20% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
        var(--gray-50);
}

.ats-builder-container {
    max-width: 1000px;
    margin: 0 auto;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    animation: fadeInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Header - Bold & Sophisticated
   ============================================ */

.builder-header {
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
    padding: var(--space-2xl) var(--space-xl);
    position: relative;
    overflow: hidden;
}

.builder-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(30%, -30%);
}

.ats-builder-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: #ffffff !important;
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
    line-height: 1.1;
    position: relative;
    z-index: 1;
}

.ats-builder-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.9) !important;
    max-width: 600px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

/* ============================================
   Form Container
   ============================================ */

.ats-resume-form {
    padding: var(--space-2xl);
}

/* ============================================
   Form Sections - Clean Hierarchy
   ============================================ */

.form-section {
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
    border-left: 4px solid var(--accent-500);
    position: relative;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.form-section:hover {
    border-left-color: var(--accent-600);
    box-shadow: var(--shadow-md);
}

.section-heading {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-900);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.section-heading::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--accent-500);
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.5);
    }
}

/* ============================================
   Form Fields - Modern & Tactile
   ============================================ */

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

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

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

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

.form-group label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-800);
    margin-bottom: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.form-group label::after {
    content: '*';
    color: var(--error-500);
    font-size: 0.75rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-family: var(--font-body);
    color: var(--gray-800);
    background: white;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    outline: none;
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: var(--primary-500);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-500);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
    transform: translateY(-1px);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.help-text {
    font-size: 0.8125rem;
    color: var(--primary-500);
    margin-top: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.help-text::before {
    content: 'ⓘ';
    font-size: 0.75rem;
}

/* ============================================
   Dynamic Items - Sophisticated Cards
   ============================================ */

.dynamic-item {
    background: white;
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    border: 2px solid var(--gray-200);
    position: relative;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    animation: slideIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.dynamic-item:hover {
    border-color: var(--accent-500);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 2px solid var(--gray-100);
}

.item-number {
    font-size: 0.8125rem;
    font-weight: 700;
    color: white;
    background: linear-gradient(135deg, var(--accent-600) 0%, var(--accent-500) 100%);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.remove-item {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 2px solid var(--error-500);
    background: white;
    color: var(--error-500);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    font-weight: 600;
}

.remove-item:hover {
    background: var(--error-500);
    color: white;
    transform: rotate(90deg) scale(1.1);
}

/* ============================================
   Action Buttons - Premium Feel
   ============================================ */

.add-button {
    width: 100%;
    padding: 1rem;
    background: white;
    border: 2px dashed var(--accent-500);
    border-radius: var(--radius-md);
    color: var(--accent-600);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: var(--font-body);
}

.add-button::before {
    content: '+';
    font-size: 1.5rem;
    font-weight: 700;
}

.add-button:hover {
    background: var(--accent-500);
    border-style: solid;
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.add-button:active {
    transform: translateY(0);
}

/* ============================================
   Submit Button - Hero Element
   ============================================ */

.form-actions {
    margin-top: var(--space-2xl);
    padding-top: var(--space-xl);
    border-top: 2px solid var(--gray-100);
    text-align: center;
}

.submit-button {
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--primary-800) 100%);
    color: white;
    border: none;
    padding: 1.25rem 3rem;
    border-radius: var(--radius-full);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 4px 20px rgba(15, 23, 42, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: var(--font-body);
    position: relative;
    overflow: hidden;
}

.submit-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.submit-button:hover::before {
    left: 100%;
}

.submit-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 30px rgba(15, 23, 42, 0.4);
}

.submit-button:active {
    transform: translateY(-1px) scale(0.98);
}

.submit-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.button-loader {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

.button-loader::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   Result Section - Celebratory
   ============================================ */

.resume-result {
    background: linear-gradient(135deg, var(--primary-900) 0%, var(--accent-600) 100%);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    margin: var(--space-xl) var(--space-xl) 0;
    text-align: center;
    color: white;
    box-shadow: var(--shadow-xl);
    animation: successSlide 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes successSlide {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.result-header {
    margin-bottom: var(--space-xl);
}

.result-header h3 {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--space-sm);
}

.result-header h3::before {
    content: '🎉 ';
    font-size: 2.5rem;
}

.result-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

.action-button {
    padding: 1rem 2rem;
    border-radius: var(--radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-body);
    border: 2px solid transparent;
}

.action-button.primary {
    background: white;
    color: var(--primary-900);
}

.action-button.primary:hover {
    background: var(--gray-50);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.action-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.action-button.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
}

.action-button.tertiary {
    background: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.5);
}

.action-button.tertiary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* ============================================
   Preview Modal - Immersive
   ============================================ */

.preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl);
    animation: modalFadeIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 1000px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    animation: modalSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.close-modal {
    position: sticky;
    top: 0;
    right: 0;
    float: right;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 300;
    color: var(--gray-800);
    cursor: pointer;
    background: white;
    z-index: 1;
    border-radius: 0 var(--radius-lg) 0 0;
    transition: all 0.2s;
}

.close-modal:hover {
    color: var(--error-500);
    background: var(--gray-50);
}

#preview-content {
    padding: var(--space-xl);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .ats-resume-builder-wrapper {
        padding: var(--space-lg) var(--space-md);
    }
    
    .ats-builder-container {
        border-radius: var(--radius-md);
    }
    
    .builder-header {
        padding: var(--space-xl) var(--space-lg);
    }
    
    .ats-builder-title {
        font-size: 2rem;
    }
    
    .ats-resume-form {
        padding: var(--space-lg);
    }
    
    .form-section {
        padding: var(--space-lg);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .section-heading {
        font-size: 1.25rem;
    }
    
    .submit-button {
        padding: 1.125rem 2rem;
        font-size: 1rem;
        width: 100%;
    }
    
    .result-actions {
        flex-direction: column;
    }
    
    .action-button {
        width: 100%;
        justify-content: center;
    }
    
    .preview-modal {
        padding: var(--space-md);
    }
}

/* ============================================
   Loading States & Animations
   ============================================ */

.loading {
    pointer-events: none;
    opacity: 0.6;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection styling */
::selection {
    background: var(--accent-500);
    color: white;
}

/* Focus visible for accessibility */
:focus-visible {
    outline: 2px solid var(--accent-500);
    outline-offset: 2px;
}