/* ===================================
   Julia Bernstein - Personal Website
   Color Palette: Confident Warmth
   =================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #0D7377;
    --color-primary-dark: #0a5c5f;
    --color-primary-light: #0f8a8e;
    --color-secondary: #E85A4F;
    --color-secondary-dark: #d14940;
    --color-dark: #1A2E35;
    --color-dark-light: #2a4a55;
    --color-light: #F8F6F3;
    --color-white: #FFFFFF;
    --color-accent: #C9A962;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-accent: 'Playfair Display', Georgia, serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;
    --spacing-3xl: 8rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* 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 20px 40px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

em {
    font-family: var(--font-accent);
    font-style: italic;
    color: var(--color-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-primary);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

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

.btn-primary:hover {
    background-color: var(--color-secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-dark);
    border: 2px solid var(--color-dark);
}

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

.btn-full {
    width: 100%;
}

/* Section Labels */
.section-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    margin-bottom: var(--spacing-md);
}

.section-intro {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    max-width: 600px;
}

/* ===================================
   Navigation
   =================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    background-color: transparent;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background-color: rgba(248, 246, 243, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-sm) 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.02em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-menu a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-dark);
    position: relative;
}

.nav-menu a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-menu a:not(.nav-cta):hover::after {
    width: 100%;
}

.nav-cta {
    padding: 0.625rem 1.25rem;
    background-color: var(--color-primary);
    color: var(--color-white) !important;
    border-radius: 4px;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-dark);
    transition: all var(--transition-base);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    position: relative;
    background: linear-gradient(135deg, var(--color-light) 0%, var(--color-white) 100%);
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-tagline {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

.hero-title {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.hero-title .highlight {
    color: var(--color-primary);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-placeholder {
    width: 100%;
    max-width: 450px;
    aspect-ratio: 3/4;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 500;
    box-shadow: var(--shadow-xl);
}

.hero-scroll {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
}

.hero-scroll a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    color: var(--color-gray-500);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.about-image {
    position: sticky;
    top: 100px;
}

.about-image img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
}

.about-image .about-credentials {
    margin-top: 0;
    padding-top: var(--spacing-md);
    border-top: none;
}

.about-text {
    margin-bottom: var(--spacing-xl);
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-700);
    font-size: 1.0625rem;
}

.about-text p:first-child {
    font-size: 1.1875rem;
    color: var(--color-dark);
}

.about-stats {
    display: flex;
    gap: var(--spacing-xl);
}

.stat {
    display: flex;
    flex-direction: column;
}

.about-credentials {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

.about-credentials p {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xs);
}

.about-credentials strong {
    color: var(--color-dark);
}

.operating-focus {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--color-gray-100);
    border-radius: 8px;
}

.operating-focus h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

.operating-focus ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.operating-focus li {
    font-size: 0.9375rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
    padding-left: 1.25rem;
    position: relative;
}

.operating-focus li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

.operating-focus li strong {
    color: var(--color-dark);
}

.about-text a {
    color: var(--color-primary);
    font-weight: 500;
}

.about-text a:hover {
    text-decoration: underline;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    font-weight: 500;
}

.about-image-placeholder {
    width: 100%;
    aspect-ratio: 4/5;
    background: linear-gradient(135deg, var(--color-accent) 0%, #b8954f 100%);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
}

/* ===================================
   Speaking Section
   =================================== */
.speaking {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-dark);
    color: var(--color-white);
}

.speaking .section-label {
    color: var(--color-accent);
}

.speaking .section-title {
    color: var(--color-white);
}

.speaking .section-title em {
    color: var(--color-accent);
}

.speaking .section-intro {
    color: var(--color-gray-300);
}

.speaking-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.speaking-header .section-intro {
    margin: 0 auto;
}

.topics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.topic-card {
    background-color: var(--color-dark-light);
    padding: var(--spacing-lg);
    border-radius: 8px;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.topic-icon {
    width: 56px;
    height: 56px;
    background-color: rgba(201, 169, 98, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.topic-card h3 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.topic-card p {
    color: var(--color-gray-300);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.speaking-cta {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-dark-light);
}

.speaking-cta p {
    margin-bottom: var(--spacing-md);
    color: var(--color-gray-300);
}

/* ===================================
   Work With Me Section
   =================================== */
.work-with-me {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-light);
}

.work-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.work-header .section-intro {
    margin: 0 auto;
}

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

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    position: relative;
}

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

.service-card.featured {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.service-card.featured h3,
.service-card.featured p,
.service-card.featured li {
    color: var(--color-white);
}

.service-card.featured .service-number {
    color: rgba(255, 255, 255, 0.4);
}

.service-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-gray-200);
    line-height: 1;
    margin-bottom: var(--spacing-md);
}

.service-card h3 {
    font-size: 1.375rem;
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    font-size: 0.9375rem;
}

.service-list {
    border-top: 1px solid var(--color-gray-200);
    padding-top: var(--spacing-md);
}

.service-card.featured .service-list {
    border-top-color: rgba(255, 255, 255, 0.2);
}

.service-list li {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background-color: var(--color-secondary);
    border-radius: 50%;
}

.service-card.featured .service-list li::before {
    background-color: var(--color-accent);
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-white);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

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

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-dark);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.contact-link svg {
    color: var(--color-primary);
}

.contact-form-wrapper {
    background-color: var(--color-light);
    padding: var(--spacing-xl);
    border-radius: 8px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem 1rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    border: 1px solid var(--color-gray-200);
    border-radius: 4px;
    background-color: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-dark);
    color: var(--color-gray-300);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: var(--spacing-md);
}

.footer-social a {
    color: var(--color-gray-300);
    transition: color var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-white);
}

/* ===================================
   Responsive Design
   =================================== */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-content {
        order: 1;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-image {
        order: 0;
    }

    .hero-image-placeholder {
        max-width: 300px;
        aspect-ratio: 1;
    }

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

    .about-image {
        order: -1;
        position: static;
    }

    .about-image img {
        max-width: 400px;
        margin: 0 auto;
        display: block;
    }

    .about-image-placeholder {
        max-width: 400px;
        margin: 0 auto;
    }

    .services-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

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

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        justify-content: center;
        gap: var(--spacing-lg);
        transition: right var(--transition-base);
        box-shadow: var(--shadow-xl);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

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

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

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

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

    .about-stats {
        flex-wrap: wrap;
        gap: var(--spacing-lg);
    }

    .stat {
        flex: 1 1 calc(50% - var(--spacing-md));
        min-width: 120px;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    html {
        font-size: 15px;
    }

    .hero {
        padding-top: var(--spacing-2xl);
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .about-stats {
        justify-content: center;
    }
}