/* ==========================================================================
   Template: Startup - Modern Startup Blog
   Version: 2.0.0
   Author: Outline Templates
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-primary: #4F46E5;
    --color-primary-dark: #4338CA;
    --color-primary-light: #C7D2FE;
    --color-secondary: #0F172A;
    --color-accent: #06B6D4;
    --color-text: #1E293B;
    --color-text-muted: #64748B;
    --color-background: #FFFFFF;
    --color-surface: #F8FAFC;
    --color-border: #E2E8F0;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Plus Jakarta Sans', sans-serif;
    --font-serif: 'Newsreader', Georgia, serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 25px 50px rgba(0, 0, 0, 0.12);
    --shadow-primary: 0 20px 40px rgba(79, 70, 229, 0.3);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-background);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.font-display {
    font-family: var(--font-display);
}

.font-serif {
    font-family: var(--font-serif);
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 1rem;
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-left.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-right.active {
    opacity: 1;
    transform: translateX(0);
}

.reveal-scale {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal-scale.active {
    opacity: 1;
    transform: scale(1);
}

.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(2deg); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(79, 70, 229, 0.3); }
    50% { box-shadow: 0 0 40px rgba(79, 70, 229, 0.5); }
}

.animate-pulse-glow {
    animation: pulse-glow 3s ease-in-out infinite;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .reveal,
    .reveal-left,
    .reveal-right,
    .reveal-scale {
        opacity: 1;
        transform: none;
    }
}

/* --------------------------------------------------------------------------
   Component: Navigation
   -------------------------------------------------------------------------- */
.nav-blur {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

/* Mobile Menu */
[data-nav-menu] {
    transition: transform var(--transition-base), opacity var(--transition-base);
}

[data-nav-menu]:not(.active) {
    transform: translateX(100%);
    opacity: 0;
    pointer-events: none;
}

[data-nav-menu].active {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

@media (min-width: 768px) {
    [data-nav-menu] {
        transform: none !important;
        opacity: 1 !important;
        pointer-events: auto !important;
    }
}

/* --------------------------------------------------------------------------
   Component: Buttons
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 25px 50px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

/* --------------------------------------------------------------------------
   Component: Category Pills
   -------------------------------------------------------------------------- */
.category-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.category-pill:not(.active) {
    background: var(--color-surface);
    color: var(--color-text-muted);
}

.category-pill:not(.active):hover {
    background: var(--color-border);
    color: var(--color-text);
}

.category-pill.active {
    background: var(--color-primary);
    color: white;
}

/* --------------------------------------------------------------------------
   Component: Article Cards
   -------------------------------------------------------------------------- */
.article-card {
    background: var(--color-background);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    border: 1px solid var(--color-border);
}

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

.article-card img {
    transition: transform var(--transition-slow);
}

.article-card:hover img {
    transform: scale(1.05);
}

/* Featured Article Card */
.featured-card {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.featured-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 60%);
    z-index: 1;
}

.featured-card .content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-2xl);
    z-index: 2;
    color: white;
}

/* --------------------------------------------------------------------------
   Component: Reading Progress Bar
   -------------------------------------------------------------------------- */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    z-index: 9999;
    transition: width 50ms linear;
}

/* --------------------------------------------------------------------------
   Component: Table of Contents
   -------------------------------------------------------------------------- */
.toc-container {
    position: sticky;
    top: 6rem;
}

.toc-link {
    display: block;
    padding: 0.5rem 0;
    padding-left: 1rem;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    border-left: 2px solid var(--color-border);
    transition: all var(--transition-fast);
}

.toc-link:hover {
    color: var(--color-text);
    border-left-color: var(--color-text-muted);
}

.toc-link.active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Component: Article Content Typography
   -------------------------------------------------------------------------- */
.article-content {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
}

.article-content h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: 3rem;
    margin-bottom: 1rem;
    color: var(--color-secondary);
    scroll-margin-top: 6rem;
}

.article-content h3 {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: var(--color-secondary);
    scroll-margin-top: 6rem;
}

.article-content p {
    margin-bottom: 1.5rem;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--color-text-muted);
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-content a:hover {
    color: var(--color-primary-dark);
}

.article-content img {
    border-radius: var(--radius-xl);
    margin: 2rem 0;
}

.article-content pre,
.article-content code {
    font-family: 'JetBrains Mono', monospace;
}

.article-content code {
    background: var(--color-surface);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.875em;
}

.article-content pre {
    background: var(--color-secondary);
    color: #e2e8f0;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 2rem 0;
}

.article-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* --------------------------------------------------------------------------
   Component: Share Buttons
   -------------------------------------------------------------------------- */
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--color-surface);
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Component: Author Card
   -------------------------------------------------------------------------- */
.author-card {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
}

.author-card .avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    object-fit: cover;
    flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Component: Comments Section
   -------------------------------------------------------------------------- */
.comment {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.comment:last-child {
    border-bottom: none;
}

.comment-reply {
    margin-left: 3.5rem;
    margin-top: 1rem;
    padding: 1rem;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
}

/* --------------------------------------------------------------------------
   Component: Category Cards
   -------------------------------------------------------------------------- */
.category-card {
    position: relative;
    padding: 2rem;
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
    color: white;
}

.category-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.category-card:hover::before {
    opacity: 0.1;
}

/* Category gradients */
.category-card.fundraising {
    background: linear-gradient(135deg, #4F46E5, #7C3AED);
}

.category-card.product {
    background: linear-gradient(135deg, #06B6D4, #0891B2);
}

.category-card.growth {
    background: linear-gradient(135deg, #10B981, #059669);
}

.category-card.leadership {
    background: linear-gradient(135deg, #F59E0B, #D97706);
}

.category-card.technology {
    background: linear-gradient(135deg, #EF4444, #DC2626);
}

.category-card.all {
    background: linear-gradient(135deg, #6366F1, #8B5CF6);
}

/* --------------------------------------------------------------------------
   Component: Contact Cards
   -------------------------------------------------------------------------- */
.contact-card {
    padding: 2rem;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.contact-card:hover {
    background: var(--color-background);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.contact-card .icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Component: Team Cards
   -------------------------------------------------------------------------- */
.team-card {
    text-align: center;
    padding: 2rem;
    background: var(--color-background);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

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

.team-card .avatar {
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    object-fit: cover;
    margin: 0 auto 1rem;
    border: 4px solid var(--color-primary-light);
}

/* --------------------------------------------------------------------------
   Component: Stats Counter
   -------------------------------------------------------------------------- */
.stat-card {
    text-align: center;
    padding: 2rem;
}

.stat-card .number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

/* --------------------------------------------------------------------------
   Component: FAQ Accordion
   -------------------------------------------------------------------------- */
[data-faq-item] {
    border-bottom: 1px solid var(--color-border);
}

[data-faq-question] {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1.5rem 0;
    text-align: left;
    font-weight: 500;
    cursor: pointer;
    transition: color var(--transition-fast);
}

[data-faq-question]:hover {
    color: var(--color-primary);
}

[data-faq-answer] {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

[data-faq-item].open [data-faq-answer] {
    max-height: 500px;
}

[data-faq-icon] {
    transition: transform var(--transition-fast);
}

[data-faq-item].open [data-faq-icon] {
    transform: rotate(180deg);
}

/* --------------------------------------------------------------------------
   Component: Newsletter Box
   -------------------------------------------------------------------------- */
.newsletter-box {
    background: linear-gradient(135deg, var(--color-primary) 0%, #7C3AED 100%);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    color: white;
}

.newsletter-box input {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.newsletter-box input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.newsletter-box input:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
    outline: none;
}

/* --------------------------------------------------------------------------
   Component: Pagination
   -------------------------------------------------------------------------- */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.pagination-btn:not(.active) {
    background: var(--color-surface);
    color: var(--color-text);
}

.pagination-btn:not(.active):hover {
    background: var(--color-border);
}

.pagination-btn.active {
    background: var(--color-primary);
    color: white;
}

/* --------------------------------------------------------------------------
   Component: Search Input
   -------------------------------------------------------------------------- */
.search-input {
    position: relative;
}

.search-input input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 3rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    background: var(--color-background);
    transition: all var(--transition-fast);
}

.search-input input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-input .icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Component: Blockquote Section
   -------------------------------------------------------------------------- */
.quote-section {
    position: relative;
    padding: 4rem 0;
}

.quote-section blockquote {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-style: italic;
    line-height: 1.8;
    text-align: center;
    color: var(--color-text);
}

.quote-section .quote-icon {
    color: var(--color-primary-light);
}

/* --------------------------------------------------------------------------
   Component: Trending/Sidebar
   -------------------------------------------------------------------------- */
.trending-item {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.trending-item:last-child {
    border-bottom: none;
}

.trending-item:hover {
    padding-left: 0.5rem;
}

.trending-item .number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-light);
    min-width: 2rem;
}

/* --------------------------------------------------------------------------
   Component: Form Inputs
   -------------------------------------------------------------------------- */
.form-input {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-background);
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input.error {
    border-color: #EF4444;
}

textarea.form-input {
    resize: vertical;
    min-height: 150px;
}

/* --------------------------------------------------------------------------
   Component: Feature Cards (for about page values)
   -------------------------------------------------------------------------- */
.feature-card {
    padding: var(--space-2xl);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Focus States (Accessibility)
   -------------------------------------------------------------------------- */
:focus {
    outline: none;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Custom Scrollbar
   -------------------------------------------------------------------------- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
    .reading-progress,
    nav,
    .toc-container,
    .share-btn,
    .newsletter-box,
    footer {
        display: none !important;
    }

    .article-content {
        font-size: 12pt;
    }

    a {
        text-decoration: none;
        color: inherit;
    }

    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: var(--color-text-muted);
    }
}