/* OpenPII Watcher - Academic Professional Theme */

:root {
    /* Color Palette - Academic Light Mode */
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    /* Light Gray */
    --text-primary: #111827;
    /* Near Black */
    --text-secondary: #4b5563;
    /* Dark Gray */
    --accent-color: #2563eb;
    /* Professional Blue */
    --accent-gradient: linear-gradient(135deg, #2563eb, #1d4ed8);
    --success-color: #059669;
    /* Emerald Green */
    --warning-color: #d97706;
    /* Amber */
    --danger-color: #dc2626;
    /* Red */
    --card-bg: #ffffff;
    --border-color: #e5e7eb;

    /* Spacing */
    --slide-padding: 60px;
    --content-max-width: 1200px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.presentation {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Slide Basics */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: var(--slide-padding);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, transform 0.5s ease;
    transform: translateY(20px);
    background-color: var(--bg-primary);
}

.slide.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    z-index: 10;
}

.slide.prev {
    opacity: 0;
    transform: translateY(-20px);
    visibility: hidden;
}

.content {
    width: 100%;
    max-width: var(--content-max-width);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    /* Center everything horizontally */
}

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

/* Typography */
h1 {
    font-size: 4.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    color: var(--accent-color);
    text-align: center;
}

h2 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 2rem;
    color: var(--text-primary);
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: 0.5rem;
    display: inline-block;
    text-align: center;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 400;
}

strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* Title Slide Specifics */
.title-slide .subtitle {
    font-size: 1.8rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-weight: 300;
    text-align: center;
}

.authors {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    width: 100%;
    text-align: center;
}

.affiliation {
    font-size: 1rem;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-top: 0.5rem;
    font-style: italic;
}

.metrics {
    display: flex;
    gap: 4rem;
    margin-top: 3rem;
    justify-content: center;
}

.metric {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 12px;
    min-width: 160px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.metric-value {
    display: block;
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent-color);
    line-height: 1;
}

.metric-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 0.5rem;
    font-weight: 600;
}

/* Grids & Layouts */
.problem-grid,
.solution-grid,
.platform-grid,
.patterns-grid,
.findings-grid,
.future-grid {
    display: grid;
    gap: 2rem;
    width: 100%;
    margin-top: 1rem;
}

.problem-grid {
    grid-template-columns: 1fr 1fr;
}

.solution-grid {
    grid-template-columns: repeat(3, 1fr);
}

.platform-grid {
    grid-template-columns: 1fr 1fr;
    max-width: 1000px;
    margin: 0 auto;
}

.patterns-grid {
    grid-template-columns: repeat(3, 1fr);
}

.findings-grid {
    grid-template-columns: 1fr 1fr;
}

.future-grid {
    grid-template-columns: 1fr 1fr;
}

/* Cards */
.problem-section,
.solution-item,
.platform-card,
.pattern-card,
.finding-card,
.demo-box,
.resource-box,
.impact-item {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.solution-item:hover,
.platform-card:hover,
.pattern-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Alignment Overrides */
.solution-item,
.pattern-card {
    text-align: center;
}

.problem-section,
.platform-card,
.finding-card,
.future-grid .finding-card {
    text-align: left;
}

/* Lists */
ul {
    list-style: none;
}

li {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
}

li::before {
    content: "•";
    color: var(--accent-color);
    position: absolute;
    left: 0;
    font-weight: bold;
    font-size: 1.5rem;
    line-height: 1;
}

/* Specific Component Styles */
.problem-highlight {
    margin-top: 2rem;
    font-size: 1.5rem;
    color: var(--text-primary);
    text-align: center;
    font-weight: 600;
    padding: 1.5rem;
    border-left: 5px solid var(--accent-color);
    background: var(--bg-secondary);
    border-radius: 0 12px 12px 0;
}

.sub-questions {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 3rem;
}

.sub-question {
    flex: 1;
    text-align: center;
    padding: 1.5rem;
    border-top: 4px solid var(--accent-color);
    background: var(--bg-secondary);
    border-radius: 0 0 12px 12px;
}

.architecture {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    /* Increased from 0.5rem */
    margin: 1.5rem 0;
    /* Increased from 1rem */
}

.arch-layer {
    background: var(--card-bg);
    padding: 1.2rem 3rem;
    /* Increased from 0.8rem 2rem */
    border-radius: 12px;
    border: 2px solid var(--accent-color);
    width: 75%;
    /* Increased from 60% */
    text-align: center;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.arch-layer h3 {
    font-size: 1.3rem;
    /* Increased from 1.1rem */
    margin-bottom: 0.3rem;
}

.arch-layer p {
    font-size: 1.1rem;
    /* Increased from 0.9rem */
    margin-bottom: 0;
}

.arrow-down {
    color: var(--text-secondary);
    font-size: 1.2rem;
    /* Increased from 1rem */
}

.platform-detail {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.platform-detail .label {
    color: var(--text-secondary);
    font-size: 1rem;
}

.platform-detail .value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1rem;
}

.pattern-f1 {
    display: inline-block;
    padding: 0.2rem 0.8rem;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.f1-perfect {
    background: #d1fae5;
    color: #065f46;
}

.f1-good {
    background: #fef3c7;
    color: #92400e;
}

.f1-low {
    background: #fee2e2;
    color: #991b1b;
}

.pattern-example {
    font-family: "SF Mono", "Menlo", monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: 6px;
    margin-top: 1rem;
    border: 1px solid var(--border-color);
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

th {
    text-align: left;
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 700;
    padding: 1rem;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.pii-type {
    font-weight: 600;
}

.improvement-value {
    color: var(--success-color);
    font-weight: 700;
}

/* Demo & Conclusion */
.demo-url {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    margin: 2rem 0;
    word-break: break-all;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 12px;
}

.demo-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
}

.demo-feature {
    background: #eff6ff;
    color: var(--accent-color);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid #bfdbfe;
}

.conclusion-metrics {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin: 3rem 0;
}

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

.conclusion-metric .value {
    display: block;
    font-size: 4rem;
    font-weight: 800;
    color: var(--success-color);
}

.conclusion-metric .label {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Navigation & Progress */
.navigation {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    gap: 1rem;
    z-index: 100;
    opacity: 0.3;
    transition: opacity 0.3s;
}

body:hover .navigation {
    opacity: 1;
}

.nav-btn {
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-btn:hover {
    background: var(--bg-secondary);
    transform: scale(1.1);
}

.slide-counter {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    font-variant-numeric: tabular-nums;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 600;
}

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    z-index: 100;
}

.progress-fill {
    height: 100%;
    background: var(--accent-color);
    width: 0%;
    transition: width 0.3s ease;
}

/* Utilities */
.center {
    text-align: center;
}

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

/* Responsive */
@media (max-width: 1024px) {
    :root {
        --slide-padding: 40px;
    }

    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.2rem;
    }

    .solution-grid,
    .patterns-grid {
        grid-template-columns: 1fr 1fr;
    }