/* ========================================
   AWS re:Invent Inspired Design
   MZC ISV Premium Package Survey
   ======================================== */

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* AWS re:Invent Color Palette */
    --color-aws-orange: #FF9900;
    --color-aws-orange-dark: #EC7211;
    --color-aws-blue: #232F3E;
    --color-aws-blue-light: #37475A;
    --color-aws-teal: #00A1C9;
    --color-aws-purple: #8B5CF6;
    
    /* Primary Colors */
    --color-primary: #FF9900;
    --color-primary-hover: #EC7211;
    --color-secondary: #232F3E;
    --color-accent: #00A1C9;
    
    /* Text Colors */
    --color-text-primary: #0F1419;
    --color-text-secondary: #5C6470;
    --color-text-tertiary: #8B939E;
    --color-text-light: #FFFFFF;
    
    /* Background Colors */
    --color-bg-dark: #0F1419;
    --color-bg-dark-alt: #1A1F28;
    --color-bg-light: #FFFFFF;
    --color-bg-light-alt: #F7F8FA;
    --color-bg-card: #FFFFFF;
    
    /* Border & Divider */
    --color-border: #E5E7EB;
    --color-border-light: #F0F2F4;
    --color-divider: #D1D5DB;
    
    /* Status Colors */
    --color-success: #16A34A;
    --color-error: #DC2626;
    --color-warning: #F59E0B;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #FF9900 0%, #EC7211 100%);
    --gradient-hero: linear-gradient(135deg, #232F3E 0%, #37475A 50%, #232F3E 100%);
    --gradient-card: linear-gradient(180deg, #FFFFFF 0%, #F7F8FA 100%);
    --gradient-accent: linear-gradient(135deg, #00A1C9 0%, #8B5CF6 100%);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
    --font-size-xs: 0.75rem;      /* 12px */
    --font-size-sm: 0.875rem;     /* 14px */
    --font-size-base: 1rem;       /* 16px */
    --font-size-lg: 1.125rem;     /* 18px */
    --font-size-xl: 1.25rem;      /* 20px */
    --font-size-2xl: 1.5rem;      /* 24px */
    --font-size-3xl: 2rem;        /* 32px */
    --font-size-4xl: 2.5rem;      /* 40px */
    --font-size-5xl: 3rem;        /* 48px */
    --font-size-6xl: 3.75rem;     /* 60px */
    
    /* Spacing */
    --spacing-xs: 0.25rem;   /* 4px */
    --spacing-sm: 0.5rem;    /* 8px */
    --spacing-md: 1rem;      /* 16px */
    --spacing-lg: 1.5rem;    /* 24px */
    --spacing-xl: 2rem;      /* 32px */
    --spacing-2xl: 3rem;     /* 48px */
    --spacing-3xl: 4rem;     /* 64px */
    --spacing-4xl: 6rem;     /* 96px */
    --spacing-5xl: 8rem;     /* 128px */
    
    /* Layout */
    --max-width: 1200px;
    --border-radius: 12px;
    --border-radius-sm: 6px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --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);
    --shadow-glow: 0 0 20px rgba(255, 153, 0, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* ========================================
   Hero Section - MZC Top Customer Special
   ======================================== */

.hero {
    position: relative;
    background: var(--gradient-hero);
    padding: var(--spacing-5xl) 0 var(--spacing-4xl);
    overflow: hidden;
    min-height: 700px;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 153, 0, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(0, 161, 201, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

/* Header Badge */
.hero-header {
    margin-bottom: var(--spacing-xl);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-xl);
    background: linear-gradient(135deg, rgba(255, 153, 0, 0.25) 0%, rgba(236, 114, 17, 0.25) 100%);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 153, 0, 0.5);
    border-radius: 50px;
    font-size: var(--font-size-base);
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: 0.03em;
    box-shadow: 0 4px 20px rgba(255, 153, 0, 0.3);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 20px rgba(255, 153, 0, 0.3);
    }
    50% {
        box-shadow: 0 4px 30px rgba(255, 153, 0, 0.5);
    }
}

/* Main Title */
.hero-title {
    font-size: clamp(2rem, 5vw, 3.75rem);
    font-weight: 800;
    color: #FFFFFF;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: var(--spacing-2xl);
}

.hero-title .highlight {
    background: linear-gradient(135deg, #FF9900 0%, #FFFFFF 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

/* Subtitle Section */
.hero-subtitle {
    margin-bottom: var(--spacing-3xl);
}

.subtitle-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    margin-bottom: var(--spacing-lg);
}

.badge-icon {
    font-size: var(--font-size-xl);
    line-height: 1;
}

.badge-text {
    font-size: var(--font-size-base);
    font-weight: 700;
    color: #FFFFFF;
    letter-spacing: -0.01em;
}

.hero-desc {
    font-size: var(--font-size-lg);
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
}

.hero-desc strong {
    font-weight: 700;
    color: #FFFFFF;
}

.text-highlight {
    color: var(--color-aws-orange);
    font-weight: 700;
    text-shadow: 0 0 20px rgba(255, 153, 0, 0.5);
}

.desktop-only {
    display: inline;
}

/* Benefits Grid */
.hero-benefits {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    max-width: 900px;
    margin: var(--spacing-3xl) auto 0;
}

.benefit-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
}

.benefit-item:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-aws-orange);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 153, 0, 0.3);
}

.benefit-icon {
    font-size: 48px;
    line-height: 1;
}

.benefit-text {
    text-align: center;
    display: flex;
    flex-direction: column;
}

.benefit-text strong {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #FFFFFF;
    display: block;
    letter-spacing: -0.01em;
}

/* CTA */
.hero-cta {
    margin-top: var(--spacing-3xl);
}

.cta-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ========================================
   Container & Layout
   ======================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.main-container {
    background: var(--color-bg-light-alt);
    padding: var(--spacing-4xl) 0;
    position: relative;
}

/* ========================================
   Form Sections - Card-based Layout
   ======================================== */

.form-section {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border-light);
    transition: var(--transition-base);
}

.form-section:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-3xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--color-border-light);
    position: relative;
}

.section-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--gradient-primary);
}

.section-number {
    flex-shrink: 0;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-text-light);
    box-shadow: var(--shadow-glow);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    font-weight: 400;
    line-height: 1.6;
}

/* ========================================
   Form Elements - Premium Style
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-xl);
}

.form-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.form-label .required {
    color: var(--color-error);
    margin-left: var(--spacing-xs);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-base);
    outline: none;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
    border-color: var(--color-text-tertiary);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(255, 153, 0, 0.1);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='14' height='8' viewBox='0 0 14 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L7 7L13 1' stroke='%235C6470' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-lg) center;
    padding-right: var(--spacing-3xl);
}

.error-message {
    display: none;
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-sm);
    font-weight: 500;
}

.error-message.show {
    display: block;
}

.form-hint {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-sm);
}

/* ========================================
   Business Challenges - Interactive Cards
   ======================================== */

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.checkbox-card {
    position: relative;
    background: var(--gradient-card);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: var(--transition-base);
    overflow: hidden;
}

.checkbox-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: var(--transition-base);
}

.checkbox-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.checkbox-card.selected {
    border-color: var(--color-primary);
    background: rgba(255, 153, 0, 0.03);
    box-shadow: var(--shadow-glow);
}

.checkbox-card.selected::before {
    transform: scaleY(1);
}

.checkbox-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.checkbox-content {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.custom-checkbox {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-base);
    background: var(--color-bg-light);
}

.checkbox-card:hover .custom-checkbox {
    border-color: var(--color-primary);
}

.checkbox-card.selected .custom-checkbox {
    background: var(--gradient-primary);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.custom-checkbox::after {
    content: '';
    display: none;
    width: 6px;
    height: 11px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-card.selected .custom-checkbox::after {
    display: block;
}

.checkbox-label {
    flex: 1;
}

.checkbox-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.checkbox-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   Category Sections - Premium ISV Cards
   ======================================== */

.category-section {
    background: linear-gradient(135deg, #FFFFFF 0%, #F7F8FA 100%);
    border: 2px solid var(--color-border-light);
}

.category-header {
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: var(--color-bg-light);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-primary);
}

.category-label {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--gradient-primary);
    color: var(--color-text-light);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    border-radius: 50px;
    margin-bottom: var(--spacing-md);
}

.category-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-text-primary);
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.category-desc {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ========================================
   ISV Cards - Compact Grid Layout
   ======================================== */

.isv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.isv-card {
    background: var(--color-bg-card);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.isv-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 120px;
    height: 120px;
    background: radial-gradient(circle, rgba(255, 153, 0, 0.05) 0%, transparent 70%);
    transform: translate(50%, -50%);
    pointer-events: none;
}

.isv-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.isv-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.isv-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    flex-shrink: 0;
    padding: var(--spacing-xs);
    background: var(--color-bg-light);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border-light);
}

.isv-info {
    flex: 1;
    min-width: 0;
}

.isv-name {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-xs);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.isv-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ========================================
   Features List - Compact Presentation
   ======================================== */

.features-list {
    margin-bottom: var(--spacing-lg);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
}

.feature-item:not(:last-child) {
    border-bottom: 1px solid var(--color-border-light);
}

.feature-icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin-top: 2px;
}

.feature-icon::before {
    content: '✓';
    color: white;
    font-size: 10px;
    font-weight: 700;
}

.feature-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    line-height: 1.5;
    font-weight: 500;
}

/* ========================================
   Interest Rating - 3 Options System
   ======================================== */

.interest-rating {
    margin-bottom: var(--spacing-md);
}

.rating-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.rating-scale {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

.rating-option {
    position: relative;
}

.rating-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.rating-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 60px;
    padding: var(--spacing-sm);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    background: var(--color-bg-light);
    cursor: pointer;
    transition: var(--transition-base);
    position: relative;
    overflow: hidden;
}

.rating-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-base);
}

.rating-button:hover {
    border-color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.rating-option input[type="radio"]:checked + .rating-button {
    border-color: var(--color-primary);
    background: rgba(255, 153, 0, 0.05);
    box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.1);
}

.rating-option input[type="radio"]:checked + .rating-button::before {
    opacity: 0.08;
}

.rating-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-primary);
    text-align: center;
    line-height: 1.3;
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.rating-option input[type="radio"]:checked + .rating-button .rating-text {
    color: var(--color-primary);
    font-weight: 700;
}

/* Notes field - compact */
.isv-notes {
    margin-top: var(--spacing-md);
}

.isv-notes label {
    display: block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.isv-notes textarea {
    width: 100%;
    min-height: 50px;
    padding: var(--spacing-sm);
    font-size: var(--font-size-xs);
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    resize: vertical;
    transition: var(--transition-base);
}

.isv-notes textarea:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.1);
}

/* ========================================
   Additional Info Cards
   ======================================== */

.additional-info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.info-card {
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
}

.info-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.info-icon {
    font-size: 32px;
    line-height: 1;
    flex-shrink: 0;
}

.info-card-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1.4;
    margin: 0;
}

.info-card textarea {
    width: 100%;
    min-height: 140px;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: 1.6;
    resize: vertical;
    transition: all var(--transition-base);
    background: var(--color-bg-light);
}

.info-card textarea::placeholder {
    color: var(--color-text-muted);
    line-height: 1.6;
}

.info-card textarea:focus {
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 153, 0, 0.1);
    background: white;
}

/* ========================================
   Submit Section - Bold CTA
   ======================================== */

.submit-section {
    background: var(--gradient-hero);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-4xl);
    text-align: center;
    box-shadow: var(--shadow-xl);
    border: none;
    position: relative;
    overflow: hidden;
}

.submit-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(255, 153, 0, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 70% 50%, rgba(0, 161, 201, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

.submit-info {
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.submit-info p {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-3xl);
    font-size: var(--font-size-lg);
    font-weight: 700;
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-base);
    min-width: 320px;
    min-height: 64px;
    height: auto;
    box-shadow: var(--shadow-glow);
    position: relative;
    z-index: 1;
    overflow: hidden;
    white-space: nowrap;
}

.submit-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, #EC7211 0%, #FF9900 100%);
    opacity: 0;
    transition: var(--transition-base);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(255, 153, 0, 0.5);
}

.submit-button:hover::before {
    opacity: 1;
}

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

.submit-button:disabled {
    background: var(--color-text-tertiary);
    cursor: not-allowed;
    opacity: 0.6;
    box-shadow: none;
}

.button-text,
.button-icon {
    position: relative;
    z-index: 1;
}

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

@media (max-width: 1024px) {
    :root {
        --font-size-6xl: 3rem;
        --font-size-5xl: 2.5rem;
        --spacing-5xl: 6rem;
    }
    
    .hero-benefits {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-md);
    }
    
    .benefit-item {
        padding: var(--spacing-md);
    }
    
    .benefit-icon {
        font-size: 40px;
    }
    
    .section-number {
        width: 56px;
        height: 56px;
        font-size: var(--font-size-xl);
    }
    
    .isv-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-6xl: 2.25rem;
        --font-size-3xl: 1.5rem;
        --spacing-4xl: 3rem;
        --spacing-3xl: 2rem;
    }
    
    .hero {
        padding: var(--spacing-4xl) 0 var(--spacing-3xl);
        min-height: auto;
    }
    
    .hero-badge {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-lg);
    }
    
    .hero-title {
        font-size: clamp(1.75rem, 4vw, 2.5rem);
        margin-bottom: var(--spacing-xl);
    }
    
    .subtitle-badge {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .badge-text {
        font-size: var(--font-size-sm);
    }
    
    .hero-desc {
        font-size: var(--font-size-base);
    }
    
    .hero-benefits {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .benefit-item {
        padding: var(--spacing-lg);
    }
    
    .benefit-icon {
        font-size: 40px;
    }
    
    .desktop-only {
        display: none;
    }
    
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .form-section {
        padding: var(--spacing-xl);
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .section-number {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-lg);
    }
    
    .challenges-grid {
        grid-template-columns: 1fr;
    }
    
    .isv-grid {
        grid-template-columns: 1fr;
    }
    
    .isv-card {
        padding: var(--spacing-md);
    }
    
    .rating-scale {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .rating-button {
        min-height: 50px;
        padding: var(--spacing-sm);
    }
    
    .info-card {
        padding: var(--spacing-lg);
    }
    
    .info-card-header {
        flex-direction: row;
        gap: var(--spacing-sm);
    }
    
    .info-icon {
        font-size: 28px;
    }
    
    .info-card-title {
        font-size: var(--font-size-base);
    }
    
    .info-card textarea {
        min-height: 120px;
        font-size: var(--font-size-sm);
    }
    
    .submit-section {
        padding: var(--spacing-2xl);
    }
    
    .submit-button {
        width: 100%;
        min-width: auto;
        font-size: var(--font-size-base);
        padding: var(--spacing-md) var(--spacing-lg);
        white-space: normal;
        line-height: 1.4;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .subtitle-badge {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .badge-icon {
        font-size: var(--font-size-lg);
    }
    
    .badge-text {
        font-size: 0.75rem;
    }
    
    .hero-desc {
        font-size: var(--font-size-sm);
    }
    
    .benefit-item {
        padding: var(--spacing-md);
    }
    
    .benefit-icon {
        font-size: 32px;
    }
    
    .benefit-text strong {
        font-size: var(--font-size-lg);
    }
    
    .cta-text {
        font-size: var(--font-size-base);
    }
    
    .rating-button {
        min-height: 45px;
        padding: var(--spacing-xs);
    }
    
    .rating-text {
        font-size: 0.625rem;
        line-height: 1.2;
    }
    
    .isv-logo {
        width: 40px;
        height: 40px;
    }
    
    .isv-name {
        font-size: var(--font-size-base);
    }
    
    .info-card {
        padding: var(--spacing-md);
    }
    
    .info-icon {
        font-size: 24px;
    }
    
    .info-card-title {
        font-size: var(--font-size-sm);
    }
    
    .info-card textarea {
        min-height: 100px;
        padding: var(--spacing-sm);
    }
    
    .submit-button {
        font-size: var(--font-size-sm);
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .button-text {
        font-size: 0.875rem;
    }
}

/* ========================================
   Animations & Micro-interactions
   ======================================== */

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

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 153, 0, 0.3);
    }
    50% {
        box-shadow: 0 0 30px rgba(255, 153, 0, 0.5);
    }
}

.form-section {
    animation: fadeInUp 0.6s ease-out;
}

.section-number {
    animation: glow 3s ease-in-out infinite;
}

/* ========================================
   Loading & Success States
   ======================================== */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 20, 25, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-3xl);
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-xl);
    animation: fadeInUp 0.3s ease-out;
}

.modal-header {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
}

.modal-body {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-xl);
}

.modal-button {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-primary);
    color: var(--color-text-primary);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-base);
}

.modal-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* ========================================
   Accessibility & Focus States
   ======================================== */

*:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .hero,
    .submit-section {
        background: white;
        color: black;
    }
    
    .form-section {
        page-break-inside: avoid;
        box-shadow: none;
    }
}