/* ==========================================================================
   AI Agentic Commerce Presentation - Shared Styles
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Base colors */
    --color-bg-dark: #1a1a2e;
    --color-bg-darker: #16213e;
    --color-text: #eeeeee;
    --color-text-muted: #888888;
    --color-text-subtle: #666666;
    
    /* Accent colors - one per section */
    --color-accent-1: #38ef7d;  /* Green - Neural Networks, Market Context */
    --color-accent-2: #ff6a00;  /* Orange - Transformers, What It Means */
    --color-accent-3: #8E54E9;  /* Purple - LLMs, Business Value */
    --color-accent-4: #ff5858;  /* Red/Pink - Agents, Org Implications */
    --color-accent-5: #3a7bd5;  /* Blue - MCP, Implementation */
    --color-accent-6: #00d9ff;  /* Cyan - Highlights */
    
    /* UI colors */
    --color-box-bg: rgba(255, 255, 255, 0.08);
    --color-box-border: rgba(255, 255, 255, 0.15);
    --color-success: #6bcb77;
    --color-warning: #ff6b6b;
    --color-highlight: #ffd93d;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    
    /* Typography */
    --font-size-sm: 0.8em;
    --font-size-base: 1em;
    --font-size-lg: 1.2em;
    --font-size-xl: 1.5em;
    --font-size-2xl: 2em;
    --font-size-3xl: 2.5em;
    --font-size-emoji: 3em;
}

/* --------------------------------------------------------------------------
   Reveal.js Overrides
   -------------------------------------------------------------------------- */
.reveal {
    font-size: 32px;
}

.reveal h1 {
    color: var(--color-accent-6);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
}

.reveal h2 {
    color: var(--color-accent-6);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
}

.reveal h3 {
    color: var(--color-highlight);
    font-size: var(--font-size-lg);
}

.reveal h4 {
    color: var(--color-success);
    font-size: var(--font-size-base);
}

.reveal p, .reveal li {
    color: var(--color-text);
}

.reveal ul, .reveal ol {
    text-align: left;
}

.reveal code {
    background: rgba(0, 0, 0, 0.4);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--color-success);
    font-size: 0.9em;
}

.reveal pre {
    background: rgba(0, 0, 0, 0.5);
    border-radius: 8px;
    padding: 15px;
    font-size: 0.55em;
    width: 100%;
    box-sizing: border-box;
}

.reveal pre code {
    background: transparent;
    padding: 0;
    color: var(--color-text);
}

.reveal table {
    margin: 0 auto;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.reveal th, .reveal td {
    border: 1px solid #444;
    padding: 10px 18px;
    text-align: left;
}

.reveal th {
    background: rgba(0, 217, 255, 0.2);
}

/* --------------------------------------------------------------------------
   Section Title Slides
   -------------------------------------------------------------------------- */
.section-title {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.section-title .title-box {
    background: linear-gradient(135deg, rgba(30,30,50,0.9), rgba(50,50,80,0.6));
    border: 3px solid var(--section-color, var(--color-accent-6));
    border-radius: 20px;
    padding: 40px 80px;
    box-shadow: 0 0 30px rgba(0,0,0,0.5), 
                inset 0 1px 0 rgba(255,255,255,0.1);
}

.section-title .emoji {
    font-size: var(--font-size-emoji);
    margin-bottom: var(--spacing-md);
    display: block;
}

.section-title h1 {
    color: var(--section-color, var(--color-accent-6));
    margin: 0 0 var(--spacing-sm) 0;
}

.section-title .subtitle {
    color: var(--color-text-muted);
    font-style: italic;
    margin: 0;
}

/* Section color variants */
.section-title.accent-1 { --section-color: var(--color-accent-1); }
.section-title.accent-2 { --section-color: var(--color-accent-2); }
.section-title.accent-3 { --section-color: var(--color-accent-3); }
.section-title.accent-4 { --section-color: var(--color-accent-4); }
.section-title.accent-5 { --section-color: var(--color-accent-5); }
.section-title.accent-6 { --section-color: var(--color-accent-6); }

/* --------------------------------------------------------------------------
   Navigation Components
   -------------------------------------------------------------------------- */
.nav-pills {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xl);
    font-size: var(--font-size-sm);
}

.nav-pills a, .nav-pills span {
    padding: 8px 16px;
    text-decoration: none;
    color: var(--color-text-muted);
    border-radius: 20px;
    transition: all 0.2s ease;
}

.nav-pills a:hover {
    color: var(--color-text);
}

.nav-pills .active {
    border: 2px solid var(--color-accent-6);
    color: var(--color-text);
}

/* Presentation selector cards */
.nav-cards {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.nav-card {
    padding: var(--spacing-lg);
    border: 2px solid var(--color-text-subtle);
    border-radius: 12px;
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    transition: all 0.2s ease;
    min-width: 180px;
}

.nav-card:hover {
    border-color: var(--color-accent-6);
    transform: translateY(-4px);
}

.nav-card.active {
    border-color: var(--color-accent-6);
}

.nav-card .emoji {
    font-size: var(--font-size-2xl);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.nav-card h3 {
    margin: 0 0 var(--spacing-xs) 0;
    color: var(--color-text);
}

.nav-card.active h3 {
    color: var(--color-accent-6);
}

.nav-card p {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Agenda / Menu Lists
   -------------------------------------------------------------------------- */
.agenda {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-width: 700px;
    margin: var(--spacing-md) auto;
}

.agenda-item {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    background: var(--color-box-bg);
    border-left: 4px solid var(--item-color, var(--color-accent-6));
    border-radius: 0 4px 4px 0;
    color: var(--color-text);
    text-decoration: none;
    transition: all 0.2s ease;
}

.agenda-item:hover {
    transform: translateX(8px);
    background: rgba(255, 255, 255, 0.12);
}

/* Agenda item color variants */
.agenda-item.accent-1 { --item-color: var(--color-accent-1); }
.agenda-item.accent-2 { --item-color: var(--color-accent-2); }
.agenda-item.accent-3 { --item-color: var(--color-accent-3); }
.agenda-item.accent-4 { --item-color: var(--color-accent-4); }
.agenda-item.accent-5 { --item-color: var(--color-accent-5); }
.agenda-item.accent-6 { --item-color: var(--color-accent-6); }

/* --------------------------------------------------------------------------
   Content Boxes
   -------------------------------------------------------------------------- */
.box {
    background: var(--color-box-bg);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
}

.box-bordered {
    background: transparent;
    border: 2px solid var(--color-box-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
}

.stat-box {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.15), rgba(107, 203, 119, 0.15));
    border-radius: 12px;
    padding: var(--spacing-lg);
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: bold;
    color: var(--color-accent-6);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.warning-box {
    background: rgba(255, 107, 107, 0.15);
    border-left: 4px solid var(--color-warning);
    padding: var(--spacing-md);
    border-radius: 0 10px 10px 0;
}

.success-box {
    background: rgba(107, 203, 119, 0.15);
    border-left: 4px solid var(--color-success);
    padding: var(--spacing-md);
    border-radius: 0 10px 10px 0;
}

/* --------------------------------------------------------------------------
   Layout Utilities
   -------------------------------------------------------------------------- */
.two-col {
    display: flex;
    gap: var(--spacing-lg);
}

.two-col > * {
    flex: 1;
}

.three-col {
    display: flex;
    gap: var(--spacing-md);
}

.three-col > * {
    flex: 1;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

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

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.grid-item {
    background: var(--color-box-bg);
    border-radius: 10px;
    padding: var(--spacing-md);
    text-align: center;
}

/* --------------------------------------------------------------------------
   Typography Utilities
   -------------------------------------------------------------------------- */
.text-muted {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.text-subtle {
    color: var(--color-text-subtle);
    font-size: 0.7em;
}

.text-highlight {
    color: var(--color-warning);
    font-weight: bold;
}

.text-accent {
    color: var(--color-success);
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.emoji-lg {
    font-size: var(--font-size-emoji);
}

.emoji-md {
    font-size: var(--font-size-2xl);
}

/* --------------------------------------------------------------------------
   Quote Block
   -------------------------------------------------------------------------- */
.quote {
    font-style: italic;
    font-size: var(--font-size-lg);
    color: var(--color-highlight);
    border-left: 4px solid var(--color-highlight);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

/* --------------------------------------------------------------------------
   Flow Diagrams
   -------------------------------------------------------------------------- */
.flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.flow-box {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 8px;
    font-weight: bold;
}

.flow-arrow {
    font-size: var(--font-size-xl);
    color: var(--color-highlight);
}

/* --------------------------------------------------------------------------
   Comparison Table Helpers
   -------------------------------------------------------------------------- */
.good {
    color: var(--color-success);
}

.bad {
    color: var(--color-warning);
}

/* --------------------------------------------------------------------------
   Stack Diagram
   -------------------------------------------------------------------------- */
.stack-diagram {
    display: flex;
    flex-direction: column;
    gap: 4px;
    max-width: 700px;
    margin: 0 auto;
}

.stack-layer {
    padding: 12px 24px;
    border-left: 4px solid;
    border-radius: 0 8px 8px 0;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.stack-layer strong {
    color: var(--color-text);
    font-size: 1em;
}

.stack-layer span {
    color: var(--color-text-muted);
    font-size: 0.75em;
}