/* ========================================
   Pieper AI — Modern Website Styles
   ======================================== */

/* CSS Custom Properties */
:root {
    --color-primary: #0066FF;
    --color-primary-dark: #0052CC;
    --color-teal: #00CED1;
    --color-orange: #FF8C00;
    --color-text: #1a1a2e;
    --color-text-muted: #4a4a68;
    --color-bg: #ffffff;
    --color-bg-alt: #f0fafa;
    --color-bg-dark: #0f0f1a;
    --color-border: #e5e7eb;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.6;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-2xl: 6rem;

    --max-width: 1200px;
    --border-radius: 8px;
    --transition: 0.2s ease;
}

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text);
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

p {
    color: var(--color-text-muted);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

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

/* Container */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-text);
    color: var(--color-text);
}

.btn-outline {
    background-color: transparent;
    color: white;
    border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    max-width: var(--max-width);
    margin: 0 auto;
    position: relative;
    z-index: 100;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.logo:hover {
    color: var(--color-primary);
}

.nav-links {
    display: none;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-links a {
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.nav-cta {
    padding: 0.625rem 1.25rem;
    background-color: var(--color-primary);
    color: white !important;
    border-radius: var(--border-radius);
}

.nav-cta:hover {
    background-color: var(--color-primary-dark);
    color: white !important;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 100;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all 0.3s ease;
}

.nav-toggle.nav-open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.nav-open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.nav-open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.nav-links.nav-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    padding: var(--spacing-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    gap: var(--spacing-sm);
    z-index: 100;
}

.nav-links.nav-open a {
    padding: var(--spacing-xs) 0;
}

.nav-links.nav-open .nav-cta {
    padding: 0.625rem 1.25rem;
    margin-top: var(--spacing-xs);
}

@media (min-width: 768px) {
    .nav-toggle {
        display: none;
    }

    .nav-links {
        display: flex;
    }

    .nav-links.nav-open {
        position: static;
        flex-direction: row;
        background: none;
        padding: 0;
        box-shadow: none;
        gap: var(--spacing-lg);
    }
}

/* Hero Section */
.hero {
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h1 {
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--color-text-muted);
    max-width: 600px;
    margin-bottom: var(--spacing-lg);
}

.hero-ctas {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

@media (min-width: 480px) {
    .hero-ctas {
        flex-direction: row;
        gap: var(--spacing-md);
    }
}

/* Sections */
.section {
    padding: var(--spacing-2xl) 0;
}

.section-alt {
    background-color: var(--color-bg-alt);
}

.section-dark {
    background: linear-gradient(135deg, #1a1a3e 0%, #2d1b4e 50%, #1a3a4a 100%);
    color: white;
}

.section-dark h2 {
    color: white;
}

.section-dark .section-intro {
    color: rgba(255, 255, 255, 0.7);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin-bottom: var(--spacing-xl);
}

.section h2 {
    text-align: center;
}

.section .section-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

/* Expertise Grid */
.expertise-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.expertise-card {
    padding: var(--spacing-lg);
    background: white;
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    border-radius: calc(var(--border-radius) * 1.5);
    transition: all var(--transition);
}

.expertise-card:hover {
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

/* Card color variants */
.expertise-card.card-blue {
    border-left-color: var(--color-primary);
}

.expertise-card.card-teal {
    border-left-color: var(--color-teal);
}

.expertise-card.card-orange {
    border-left-color: var(--color-orange);
}

.expertise-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #0066FF10, #0066FF20);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.card-blue .expertise-icon {
    background: linear-gradient(135deg, #0066FF15, #0066FF25);
}

.card-teal .expertise-icon {
    background: linear-gradient(135deg, #00CED115, #00CED125);
}

.card-orange .expertise-icon {
    background: linear-gradient(135deg, #FF8C0015, #FF8C0025);
}

.expertise-icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-primary);
}

.card-teal .expertise-icon svg {
    color: var(--color-teal);
}

.card-orange .expertise-icon svg {
    color: var(--color-orange);
}

.expertise-card h3 {
    color: var(--color-text);
}

.expertise-card p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Approach Grid */
.approach-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

@media (min-width: 768px) {
    .approach-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.approach-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-primary);
    background: linear-gradient(135deg, #0066FF15, #0066FF25);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 100px;
    margin-bottom: var(--spacing-md);
}

/* Colored number badges */
.item-blue .approach-number {
    color: var(--color-primary);
    background: linear-gradient(135deg, #0066FF15, #0066FF25);
}

.item-teal .approach-number {
    color: var(--color-teal);
    background: linear-gradient(135deg, #00CED115, #00CED125);
}

.item-orange .approach-number {
    color: var(--color-orange);
    background: linear-gradient(135deg, #FF8C0015, #FF8C0025);
}

.approach-item h3 {
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.approach-item p {
    font-size: 0.95rem;
    max-width: 300px;
    margin: 0 auto;
}

/* Selected Work Section */
.work-list {
    max-width: 100%;
    margin: var(--spacing-xl) auto 0;
    display: grid;
    gap: var(--spacing-lg);
}

.work-item {
    padding: var(--spacing-md);
    padding-left: var(--spacing-lg);
    border-left: 3px solid var(--color-primary);
    text-align: left;
}

.work-item:nth-child(2) {
    border-left-color: var(--color-teal);
}

.work-item:nth-child(3) {
    border-left-color: var(--color-orange);
}

.work-item h3 {
    font-size: 1.1rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.work-item p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    margin: 0;
}

@media (min-width: 768px) {
    .work-list {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xl);
    }
}

/* Testimonial Section */
.testimonial-featured {
    max-width: 700px;
    margin: var(--spacing-xl) auto 0;
    padding: var(--spacing-xl);
    background: white;
    border-radius: calc(var(--border-radius) * 1.5);
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

.testimonial-featured p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text);
    font-style: italic;
    margin-bottom: var(--spacing-lg);
}

.testimonial-featured footer {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.testimonial-featured cite {
    font-style: normal;
    font-weight: 600;
    color: var(--color-text);
}

.testimonial-featured footer span {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* About Section */
.about-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.profile-photo {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: var(--spacing-lg);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.profile-photo:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.16);
}

.about-text p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.about-lead {
    font-size: 1.25rem !important;
    color: var(--color-text) !important;
}

.about-lead strong {
    color: var(--color-primary);
}

.link-arrow {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

.link-arrow svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition);
}

.link-arrow:hover svg {
    transform: translateX(4px);
}

/* Contact Section - Process Grid */
.process-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .process-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.process-number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 100px;
    margin-bottom: var(--spacing-md);
}

.process-item h3 {
    color: white;
    margin-bottom: var(--spacing-xs);
}

.process-item p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 280px;
    margin: 0 auto;
}

/* Contact Section - CTAs */
.contact-ctas {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.contact-or {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.95rem;
}

@media (min-width: 640px) {
    .contact-ctas {
        flex-direction: row;
        justify-content: center;
    }
}

/* Footer */
.footer {
    background-color: var(--color-bg-alt);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    gap: var(--spacing-lg);
    text-align: center;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr 2fr 1fr;
        text-align: left;
    }
}

.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
}

.footer-contact p {
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-contact a {
    color: var(--color-text-muted);
}

.footer-contact a:hover {
    color: var(--color-primary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .footer-links {
        justify-content: flex-end;
    }
}

.footer-links a {
    color: var(--color-text-muted);
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--color-primary);
}

/* Animations */
@media (prefers-reduced-motion: no-preference) {
    .expertise-card,
    .btn {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* YouCanBookMe Link Styled as Button (contact section) */
.contact-ctas .ycbm_link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-family: var(--font-sans);
    font-size: 1.125rem;
    font-weight: 600;
    border-radius: 8px;
    border: 2px solid #0066FF;
    background-color: #0066FF;
    color: white;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.contact-ctas .ycbm_link:hover {
    background-color: #0052CC;
    border-color: #0052CC;
    color: white;
}