/*
  DarkWaterCDR Data Science Portfolio — Bellevue University Skin
  Brand color tokens pulled from Bellevue University Brand Guidelines.
  Primary: Purple #4F3674, Gold #D6A800; Neutrals: #939597 (Cool Gray 11), #EEE5BC.
*/

@charset "utf-8";

/* =========================
   Brand Tokens (CSS Variables)
   ========================= */
:root {
    --bu-purple: #4F3674;
    --bu-purple-700: #3b285a;
    --bu-purple-900: #2a1d42;
    --bu-gold: #D6A800;
    --bu-gold-200: #EEE5BC;
    --bu-gray: #939597;
    --bu-white: #ffffff;
    --bu-black: #000000;

    /* Gradients */
    --grad-purple-deep: linear-gradient(135deg, var(--bu-purple-900) 0%, #0b0a0e 100%);
    --grad-accent: linear-gradient(135deg, var(--bu-purple) 0%, var(--bu-gold) 100%);
    --grad-hero: linear-gradient(135deg, var(--bu-purple-900) 0%, var(--bu-purple) 50%, var(--bu-purple-700) 100%);

    /* Typography */
    --font-primary: 'Arial', 'Helvetica', sans-serif;
    --font-heading: 'Arial', 'Helvetica', sans-serif;

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

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* =========================
   Reset + Base
   ========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--bu-white);
    background: var(--bu-black);
    overflow-x: hidden;
}

/* =========================
   Typography
   ========================= */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--bu-gold);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--bu-gold-200);
}

/* =========================
   Header
   ========================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--spacing-md);
    transition: background 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.95);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex: 1;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 900;
    color: var(--bu-gold);
    letter-spacing: 1px;
}

.main-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.menu-item {
    color: var(--bu-white);
    text-decoration: none;
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
}

.menu-item:hover,
.menu-item.active {
    color: var(--bu-gold);
    background: rgba(214, 168, 0, 0.1);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--bu-white);
    transition: 0.3s;
}

/* =========================
   Hero Section
   ========================= */
.hero-section {
    min-height: 100vh;
    background: var(--grad-hero);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
}

.hero-content {
    max-width: 800px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bu-gold) 0%, var(--bu-white) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: var(--grad-accent);
    color: var(--bu-white);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* =========================
   Projects Section
   ========================= */
.projects-section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: var(--bu-black);
}

.projects-container {
    max-width: 1200px;
    margin: 0 auto;
}

.projects-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.projects-header h2 {
    color: var(--bu-gold);
    margin-bottom: var(--spacing-md);
}

.projects-header p {
    font-size: 1.125rem;
    opacity: 0.8;
}

.view-toggle {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.view-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 2px solid var(--bu-purple);
    background: transparent;
    color: var(--bu-white);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-btn:hover,
.view-btn.active {
    background: var(--bu-purple);
    color: var(--bu-white);
    border-color: var(--bu-purple);
}

/* Projects Content */
.projects-content {
    transition: opacity 0.3s ease;
}

.loading {
    text-align: center;
    padding: var(--spacing-xxl);
    color: var(--bu-gray);
    font-size: 1.125rem;
}

/* Grid View */
.grid-view {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: rgba(79, 54, 116, 0.1);
    border: 1px solid rgba(214, 168, 0, 0.2);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--bu-gold);
}

.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.project-info {
    padding: var(--spacing-lg);
}

.project-title {
    color: var(--bu-gold);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.project-excerpt {
    color: var(--bu-white);
    opacity: 0.8;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* List View */
.list-view {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.list-item {
    display: flex;
    gap: var(--spacing-lg);
    background: rgba(79, 54, 116, 0.1);
    border: 1px solid rgba(214, 168, 0, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    cursor: pointer;
}

.list-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--bu-gold);
}

.list-image {
    flex-shrink: 0;
    width: 200px;
    height: 150px;
    object-fit: cover;
    border-radius: var(--radius-md);
}

.list-content {
    flex: 1;
}

.list-title {
    color: var(--bu-gold);
    margin-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.list-synopsis {
    color: var(--bu-white);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.list-skills {
    color: var(--bu-gray);
    font-size: 0.9rem;
}

.list-skills strong {
    color: var(--bu-gold);
}

.skills-content {
    margin-top: var(--spacing-xs);
}

.skills-content ul {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.skills-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.4;
}

.skills-content strong {
    color: var(--bu-gold);
    font-weight: 600;
}

/* =========================
   About Section
   ========================= */
.section {
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: var(--bu-black);
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.about-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.about-header h2 {
    color: var(--bu-gold);
}

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

.about-visual {
    background: rgba(79, 54, 116, 0.1);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(214, 168, 0, 0.2);
}

.profile-headshot {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: block;
}

.quick-facts {
    margin-bottom: var(--spacing-xl);
}

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

.fact-label {
    font-weight: 600;
    color: var(--bu-gold);
    display: block;
    margin-bottom: 2px;
}

.fact-value {
    color: var(--bu-white);
}

.about-info h3 {
    color: var(--bu-gold);
    margin-bottom: var(--spacing-lg);
}

.resume-list {
    list-style: none;
    padding: 0;
}

.resume-list li {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--bu-purple);
}

.resume-list strong {
    color: var(--bu-gold);
}

.edu-list {
    list-style: none;
    padding: 0;
}

.edu-list li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--bu-purple);
}

/* =========================
   Contact Section
   ========================= */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-header {
    margin-bottom: var(--spacing-xxl);
}

.contact-header h2 {
    color: var(--bu-gold);
}

.social-links h4 {
    color: var(--bu-white);
    margin-bottom: var(--spacing-lg);
}

.social-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background: rgba(79, 54, 116, 0.1);
    border: 2px solid var(--bu-purple);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-btn:hover {
    background: var(--bu-purple);
    border-color: var(--bu-gold);
    transform: scale(1.1);
}

.social-btn svg {
    width: 24px;
    height: 24px;
    fill: var(--bu-white);
}

/* =========================
   Footer
   ========================= */
.footer {
    background: rgba(0, 0, 0, 0.9);
    padding: var(--spacing-lg);
    text-align: center;
    border-top: 1px solid rgba(214, 168, 0, 0.2);
}

.footer-copyright {
    color: var(--bu-gray);
    font-size: 0.9rem;
}

/* =========================
   Scroll to Top
   ========================= */
.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--bu-purple);
    color: var(--bu-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.scroll-to-top.visible {
    opacity: 1;
    visibility: visible;
}

/* =========================
   Responsive Design
   ========================= */
@media (max-width: 768px) {
    .header {
        padding: 0;
        flex-direction: column;
        height: auto;
        min-height: 7vh;
    }

    .logo-container {
        flex-direction: column;
        gap: var(--spacing-xs);
        width: 100%;
        padding: var(--spacing-sm);
    }

    .logo {
        height: 10vh !important;
        width: 90vw !important;
        margin: 0 auto;
    }

    .main-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(10px);
        -webkit-backdrop-filter: blur(10px);
        flex-direction: column;
        gap: var(--spacing-sm);
        padding: var(--spacing-md);
        margin-top: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .main-menu.active {
        display: flex;
    }

    .menu-toggle {
        display: flex;
        position: absolute;
        top: var(--spacing-sm);
        right: var(--spacing-sm);
        z-index: 1001;
    }

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

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

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .projects-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .grid-view {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .list-item {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .list-image {
        width: 100%;
        height: 200px;
    }

    .about-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-visual {
        padding: var(--spacing-lg);
        text-align: center;
    }

    .social-buttons {
        gap: var(--spacing-md);
    }

    .social-btn {
        width: 50px;
        height: 50px;
    }

    .social-btn svg {
        width: 20px;
        height: 20px;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .hero-content h1 {
        font-size: 1.75rem;
    }

    .projects-section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }

    .view-toggle {
        flex-direction: column;
        align-items: center;
    }

    .view-btn {
        width: 100%;
        max-width: 200px;
    }

    .section {
        padding: var(--spacing-xl) var(--spacing-sm);
    }
}

/* =========================
   Accessibility & Motion
   ========================= */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states */
.view-btn:focus,
.social-btn:focus,
.cta-button:focus {
    outline: 2px solid var(--bu-gold);
    outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
    :root {
        --bu-purple: #000000;
        --bu-gold: #ffffff;
    }
}