/* Landing Page Styles - Warm, Human-Centered Design */

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Warm, neutral palette */
    --color-cream: #faf8f5;
    --color-beige: #f5f1eb;
    --color-warm-white: #fefcf9;
    --color-terracotta: #c97d60;
    --color-terracotta-light: #d49a84;
    --color-purple-soft: #8b7fa8;
    --color-purple-light: #a89bbf;
    
    /* Text colors - dark, readable */
    --text-primary: #2d2d2d;
    --text-secondary: #4a4a4a;
    --text-tertiary: #6b6b6b;
    --text-light: #8a8a8a;
    
    /* Accent colors */
    --accent-primary: var(--color-terracotta);
    --accent-secondary: var(--color-purple-soft);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 5rem;
    --space-5xl: 6rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows - subtle */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--color-cream);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* HERO SECTION */
.hero {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-4xl) var(--space-xl) var(--space-5xl);
    background: linear-gradient(180deg, var(--color-warm-white) 0%, var(--color-cream) 100%);
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    z-index: 1;
}

.hero-headline {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    letter-spacing: -0.02em;
}

.hero-subheadline {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--space-2xl);
}

.cta-button {
    padding: var(--space-md) var(--space-2xl);
    font-size: 1.125rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    display: inline-block;
}

.cta-button.primary {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.cta-button.primary:hover {
    background: var(--color-terracotta-light);
    border-color: var(--color-terracotta-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cta-button.secondary {
    background: transparent;
    color: var(--text-primary);
    border-color: var(--text-primary);
}

.cta-button.secondary:hover {
    background: var(--text-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* WAVE DIVIDERS */
.wave-divider {
    width: 100%;
    height: 120px;
    color: var(--color-cream);
    margin-top: auto;
    position: absolute;
    bottom: 0;
    left: 0;
    overflow: hidden;
}

.wave-divider-reverse {
    color: var(--color-beige);
    transform: rotate(180deg);
}

.wave-divider svg {
    width: 100%;
    height: 100%;
    display: block;
}

/* VALUE PROPS SECTION */
.value-props {
    padding: var(--space-5xl) 0;
    background: var(--color-beige);
    position: relative;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: var(--space-4xl);
    letter-spacing: -0.01em;
}

.props-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-2xl);
    margin-top: var(--space-3xl);
}

.prop-card {
    background: var(--color-warm-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    text-align: center;
}

.prop-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.prop-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    display: block;
}

.prop-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.prop-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* HOW IT WORKS SECTION */
.how-it-works {
    padding: var(--space-5xl) 0;
    background: var(--color-warm-white);
    position: relative;
}

.steps {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--space-2xl);
    margin-bottom: var(--space-3xl);
    align-items: flex-start;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.step-description {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* TRY IT SECTION */
.try-it {
    padding: var(--space-5xl) 0;
    background: var(--color-beige);
    position: relative;
}

.section-description {
    font-size: 1.125rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--space-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.terraform-input-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-warm-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.terraform-input-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    border-bottom: 2px solid var(--color-beige);
}

.input-tab,
a.input-tab {
    padding: var(--space-md) var(--space-xl);
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-tertiary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all var(--transition-fast);
}

.input-tab:hover {
    color: var(--text-primary);
}

.input-tab.active {
    color: var(--accent-primary);
    border-bottom: 2px solid transparent;
}

.input-tab-content {
    display: none !important;
}

.input-tab-content.active {
    display: flex !important;
    display: block;
}

.terraform-textarea {
    width: 100%;
    min-height: 300px;
    padding: var(--space-lg);
    border: 2px solid var(--color-beige);
    border-radius: var(--radius-md);
    font-family: 'SF Mono', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: white;
    resize: vertical;
    margin-bottom: var(--space-lg);
    transition: border-color var(--transition-fast);
}

.terraform-textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.estimate-button {
    width: 100%;
    padding: var(--space-lg) var(--space-2xl);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.estimate-button:hover:not(:disabled) {
    background: var(--color-terracotta-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.estimate-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.file-upload-area {
    border: 2px dashed var(--color-beige);
    border-radius: var(--radius-md);
    padding: var(--space-3xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    margin-bottom: var(--space-lg);
    background: white;
}

.file-upload-area:hover {
    border-color: var(--accent-primary);
    background: var(--color-cream);
}

.file-upload-prompt {
    color: var(--text-primary);
}

.file-upload-prompt p {
    color: var(--text-primary);
    font-weight: 500;
}

.upload-icon {
    font-size: 3rem;
    display: block;
    margin-bottom: var(--space-md);
}

.github-note {
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-beige);
    text-align: center;
    color: var(--text-secondary);
}

.github-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}

.github-link:hover {
    text-decoration: underline;
}

/* TRUST SECTION */
.trust-section {
    padding: var(--space-5xl) 0;
    background: var(--color-warm-white);
    position: relative;
}

.trust-content {
    max-width: 1000px;
    margin: 0 auto;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-2xl);
    margin-bottom: var(--space-4xl);
}

.trust-item {
    background: var(--color-cream);
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
}

.trust-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.trust-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.trust-description em {
    font-style: italic;
    color: var(--accent-primary);
}

.what-this-is-not {
    /* Use transparent background so it matches dark theme card */
    background: transparent;
    padding: var(--space-2xl);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--accent-secondary);
}

.not-title {
    font-size: 1.5rem;
    font-weight: 600;
    /* Make the section title readable on dark background */
    color: #e5e7eb; /* slate-200 */
    margin-bottom: var(--space-lg);
}

.not-list {
    list-style: none;
    padding: 0;
}

.not-list li {
    padding: var(--space-sm) 0;
    font-size: 1rem;
    line-height: 1.7;
    /* Default text (descriptions) – similar to advisory paragraph */
    color: #9ca3af; /* slate-400 */
}

.not-list li > span:not(.text-slate-500) {
    /* Ensure span text uses the softer description color */
    color: #9ca3af;
}

.not-list li strong {
    /* Left-hand labels (e.g. "A cloud provider bill") should be white */
    color: #f9fafb; /* slate-50 */
    font-weight: 600;
}

/* FOOTER */
.footer {
    padding: var(--space-3xl) 0;
    background: var(--color-beige);
    text-align: center;
}

.footer-disclaimer {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto var(--space-lg);
}

.footer-disclaimer strong {
    color: var(--text-primary);
    font-weight: 600;
}

.footer-tagline {
    font-size: 1rem;
    color: var(--text-tertiary);
    font-style: italic;
}

/* READ-ONLY BANNER */
.read-only-banner {
    background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--color-purple-light) 100%);
    color: white;
    padding: var(--space-md) var(--space-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
}

.read-only-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
}

.read-only-icon {
    font-size: 1.2rem;
}

.read-only-text {
    font-size: 0.95rem;
    font-weight: 500;
}

/* RESULTS SECTION */
.results-section {
    padding: var(--space-5xl) 0;
    background: var(--color-cream);
}

/* FADE-IN ANIMATIONS */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out forwards;
}

/* SMOOTH SCROLLING */
html {
    scroll-behavior: smooth;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-lg);
    }
    
    .hero {
        min-height: 70vh;
        padding: var(--space-3xl) var(--space-lg) var(--space-4xl);
    }
    
    .hero-headline {
        margin-bottom: var(--space-lg);
    }
    
    .hero-subheadline {
        margin-bottom: var(--space-xl);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }
    
    .cta-button {
        width: 100%;
    }
    
    .props-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .step {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .step-number {
        align-self: center;
    }
    
    .trust-grid {
        grid-template-columns: 1fr;
    }
    
    .terraform-input-wrapper {
        padding: var(--space-lg);
    }
    
    .section-title {
        margin-bottom: var(--space-2xl);
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--space-2xl) var(--space-md) var(--space-3xl);
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .props-grid,
    .trust-grid {
        gap: var(--space-lg);
    }
    
    .prop-card,
    .trust-item {
        padding: var(--space-lg);
    }
}

/* ACCESSIBILITY */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Focus states for accessibility */
button:focus,
a:focus,
input:focus,
textarea:focus {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Results section will use existing styles from styles.css */
/* Import is handled via separate link tag in HTML */