/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors - Light Mode */
    --color-bg-primary: #fafafa;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f0f0f5;
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a4a68;
    --color-text-muted: #8888a0;

    /* Accent Colors */
    --color-accent-1: #6c5ce7;
    --color-accent-2: #a29bfe;
    --color-accent-3: #fd79a8;
    --gradient-primary: linear-gradient(135deg, var(--color-accent-1) 0%, var(--color-accent-3) 100%);
    --gradient-text: linear-gradient(135deg, var(--color-accent-1), var(--color-accent-3), var(--color-accent-2));

    /* Surfaces */
    --color-card-bg: rgba(255, 255, 255, 0.8);
    --color-card-border: rgba(0, 0, 0, 0.05);
    --color-glass-bg: rgba(255, 255, 255, 0.25);
    --color-glass-border: rgba(255, 255, 255, 0.3);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(108, 92, 231, 0.15);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    --font-size-6xl: 4.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Layout */
    --container-width: 1200px;
    --header-height: 80px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-full: 9999px;
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --color-bg-primary: #0f0f1a;
    --color-bg-secondary: #1a1a2e;
    --color-bg-tertiary: #252542;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b8b8d0;
    --color-text-muted: #6868a0;

    --color-card-bg: rgba(26, 26, 46, 0.8);
    --color-card-border: rgba(255, 255, 255, 0.05);
    --color-glass-bg: rgba(26, 26, 46, 0.6);
    --color-glass-border: rgba(255, 255, 255, 0.1);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 60px rgba(108, 92, 231, 0.25);
}

/* ============================================
   CSS Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

html {
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    transition: background-color var(--transition-slow), color var(--transition-slow);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section__subtitle {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-accent-1);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section__title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-3xl);
    line-height: 1.2;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {

    0%,
    100% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn--primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 4px 20px rgba(108, 92, 231, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 8px 30px rgba(108, 92, 231, 0.4);
}

.btn--outline {
    border: 2px solid var(--color-accent-1);
    color: var(--color-accent-1);
    background: transparent;
}

.btn--outline:hover {
    background: var(--color-accent-1);
    color: white;
    transform: translateY(-2px);
}

.btn--full {
    width: 100%;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.scrolled {
    background: var(--color-glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-glass-border);
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav__logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
}

.logo-text {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-sm);
    margin-right: var(--spacing-xs);
    font-weight: 700;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-text-primary);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

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

/* Theme Toggle */
.theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--color-accent-1);
    color: white;
    transform: rotate(15deg);
}

.theme-toggle .icon {
    width: 20px;
    height: 20px;
    transition: all var(--transition-base);
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Mobile Menu Toggle */
.nav__toggle {
    display: none;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
}

.hamburger {
    width: 20px;
    height: 2px;
    background: var(--color-text-primary);
    position: relative;
    transition: all var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: inherit;
    transition: all var(--transition-fast);
}

.hamburger::before {
    top: -6px;
}

.hamburger::after {
    top: 6px;
}

.nav__toggle.active .hamburger {
    background: transparent;
}

.nav__toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav__toggle.active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: var(--header-height);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 100%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero__content {
    z-index: 1;
}

.hero__greeting {
    display: block;
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.hero__title {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-muted);
    max-width: 500px;
    margin-bottom: var(--spacing-xl);
}

.hero__buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* Hero Image */
.hero__image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero__blob {
    width: 400px;
    height: 400px;
    background: var(--gradient-primary);
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    animation: blobMorph 8s ease-in-out infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

@keyframes blobMorph {

    0%,
    100% {
        border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    }

    50% {
        border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%;
    }
}

.hero__avatar {
    width: 320px;
    height: 320px;
    background: var(--color-bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.avatar-placeholder {
    font-size: var(--font-size-6xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Floating Elements */
.hero__floating-elements {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    font-size: 2rem;
    animation: float 6s ease-in-out infinite;
}

.floating-element--1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element--2 {
    top: 20%;
    right: 10%;
    animation-delay: 1s;
}

.floating-element--3 {
    bottom: 20%;
    left: 20%;
    animation-delay: 2s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(10deg);
    }
}

/* Scroll Indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 2px solid var(--color-accent-1);
    border-bottom: 2px solid var(--color-accent-1);
    transform: rotate(45deg);
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(10px);
    }
}

/* ============================================
   About Section
   ============================================ */
.about__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.about__text {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.about__stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat__label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Skills */
.about__skills-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.skill-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.skill-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent-1);
}

.skill-card__icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.skill-card__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.skill-card__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ============================================
   Projects Section
   ============================================ */
.projects {
    background: var(--color-bg-secondary);
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-xl);
}

.project-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    backdrop-filter: blur(10px);
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-card__image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-placeholder span {
    font-size: 4rem;
    filter: grayscale(100%) brightness(200%);
}

.project-card__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-card__overlay {
    opacity: 1;
}

.project-card__link {
    width: 50px;
    height: 50px;
    background: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.8);
    transition: transform var(--transition-base);
}

.project-card__link svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent-1);
}

.project-card:hover .project-card__link {
    transform: scale(1);
}

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

.project-card__title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.project-card__description {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

.project-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-accent-1);
}

/* ============================================
   Contact Section
   ============================================ */
.contact__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact__info-title {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.contact__info-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

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

.contact__icon {
    width: 48px;
    height: 48px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.contact__label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.contact__value {
    font-weight: 500;
}

.contact__value:hover {
    color: var(--color-accent-1);
}

/* Social Links */
.contact__socials {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--color-accent-1);
    color: white;
    transform: translateY(-4px);
}

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

/* Contact Form */
.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form__group {
    position: relative;
}

.form__input {
    width: 100%;
    padding: var(--spacing-lg);
    padding-top: var(--spacing-xl);
    background: var(--color-bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    outline: none;
}

.form__input:focus {
    border-color: var(--color-accent-1);
    background: var(--color-bg-secondary);
}

.form__label {
    position: absolute;
    left: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: var(--font-size-base);
    pointer-events: none;
    transition: all var(--transition-base);
}

.form__input:focus+.form__label,
.form__input:not(:placeholder-shown)+.form__label {
    top: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--color-accent-1);
}

.form__textarea {
    min-height: 150px;
    resize: vertical;
}

.form__textarea+.form__label {
    top: var(--spacing-xl);
    transform: none;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    border-top: 1px solid var(--color-card-border);
}

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

.footer__logo {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.footer__text {
    color: var(--color-text-muted);
    max-width: 400px;
    margin: 0 auto;
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-card-border);
}

.footer__copy {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.footer__back-to-top {
    width: 44px;
    height: 44px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.footer__back-to-top:hover {
    background: var(--color-accent-1);
    color: white;
    transform: translateY(-4px);
}

.footer__back-to-top svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Responsive Styles
   ============================================ */
@media (max-width: 1024px) {
    .hero__title {
        font-size: var(--font-size-5xl);
    }

    .hero__blob {
        width: 350px;
        height: 350px;
    }

    .hero__avatar {
        width: 280px;
        height: 280px;
    }
}

@media (max-width: 768px) {
    .nav__list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        border-bottom: 1px solid var(--color-card-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav__list.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__toggle {
        display: flex;
    }

    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__content {
        order: 2;
    }

    .hero__image {
        order: 1;
    }

    .hero__title {
        font-size: var(--font-size-4xl);
    }

    .hero__description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__blob {
        width: 280px;
        height: 280px;
    }

    .hero__avatar {
        width: 220px;
        height: 220px;
    }

    .about__content,
    .contact__content {
        grid-template-columns: 1fr;
    }

    .about__stats {
        justify-content: center;
    }

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

    .section__title {
        font-size: var(--font-size-3xl);
    }

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

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

@media (max-width: 480px) {
    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .hero__subtitle {
        font-size: var(--font-size-lg);
    }

    .hero__blob {
        width: 220px;
        height: 220px;
    }

    .hero__avatar {
        width: 180px;
        height: 180px;
    }

    .stat__number {
        font-size: var(--font-size-3xl);
    }

    .btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }
}

/* ============================================
   Moo Theme (Highland Cow Valentine)
   ============================================ */
body.moo-theme {
    --color-bg-primary: #fff9f0;
    /* Creamy white */
    --color-bg-secondary: #fff0e5;
    /* Soft peach */
    --color-bg-tertiary: #ffe4d6;
    /* Darker peach */
    --color-text-primary: #5d4037;
    /* Warm brown */
    --color-text-secondary: #795548;
    /* Lighter brown */
    --color-accent-1: #ff8a80;
    /* Soft red/pink */
    --color-accent-2: #ffcc80;
    /* Soft orange */
    --color-accent-3: #8d6e63;
    /* Brown accent */
    --gradient-primary: linear-gradient(135deg, #ff8a80 0%, #ffcc80 100%);

    background-image: url('../assets/images/pattern.png');
    background-size: 400px;
    background-blend-mode: multiply;
}

body.moo-theme .nav__logo .logo-text {
    background: #5d4037;
    color: #fff9f0;
}

/* Moo Overlay */
.moo-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(93, 64, 55, 0.9);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.moo-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}

.moo-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 90%;
    max-width: 500px;
}

.moo-cow {
    width: 180px;
    margin-bottom: -40px;
    z-index: 2;
    /* Blend multiply to remove white/light pixels if any remain, and drop shadow */
    mix-blend-mode: multiply;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
    animation: cowFloat 3s ease-in-out infinite;
}

@keyframes cowFloat {

    0%,
    100% {
        transform: translateY(0) rotate(-2deg);
    }

    50% {
        transform: translateY(-10px) rotate(2deg);
    }
}

.moo-card {
    background: #fff9f0;
    padding: 3rem 2rem 2rem;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    text-align: center;
    width: 100%;
    position: relative;
    border: 4px solid #5d4037;
    z-index: 1;
    /* Ensure card is above cow's mix-blend backdrop if needed */
}

.moo-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 2rem;
    color: #8d6e63;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
}

.game-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.game-step.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.moo-title {
    font-family: 'Comic Sans MS', 'Chalkboard SE', sans-serif;
    /* Playful font fallbacks */
    font-size: 2rem;
    color: #5d4037;
    margin-bottom: 1rem;
}

.moo-text {
    font-size: 1.1rem;
    color: #795548;
    margin-bottom: 2rem;
}

.moo-options {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn--moo {
    background: #5d4037;
    color: #fff9f0;
    border: 2px solid #5d4037;
}

.btn--moo:hover {
    background: #795548;
    transform: translateY(-2px);
}

.btn--moo-outline {
    background: transparent;
    color: #5d4037;
    border: 2px solid #5d4037;
}

.btn--moo-outline:hover {
    background: #5d4037;
    color: #fff9f0;
}

.btn--moo-blue {
    background: #3498db;
    color: #fff;
    border: 2px solid #3498db;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

.btn--moo-blue:hover {
    background: #2980b9;
    border-color: #2980b9;
    transform: translateY(-2px);
}

/* Confetti Canvas */
#confetti-canvas {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 10;
}

/* Floating Hearts */
.floating-hearts {
    display: flex;
    justify-content: center;
    gap: 1rem;
    font-size: 2.5rem;
    margin-top: 1rem;
}

.floating-hearts span {
    animation: heartFloat 2s ease-in-out infinite;
}

.floating-hearts span:nth-child(2) {
    animation-delay: 0.2s;
}

.floating-hearts span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes heartFloat {

    0%,
    100% {
        transform: translateY(0) scale(1);
    }

    50% {
        transform: translateY(-10px) scale(1.1);
    }
}
/* ============================================
   Moo Theme (Highland Cow Valentine)
   ============================================ */
body.moo-theme {
    --color-bg-primary: #fff9f0; /* Creamy white */
    --color-bg-secondary: #fff0e5; /* Soft peach */
    --color-bg-tertiary: #ffe4d6; /* Darker peach */
    --color-text-primary: #5d4037; /* Warm brown */
    --color-text-secondary: #795548; /* Lighter brown */
    --color-accent-1: #ff8a80; /* Soft red/pink */
    --color-accent-2: #ffcc80; /* Soft orange */
    --color-accent-3: #8d6e63; /* Brown accent */
    --gradient-primary: linear-gradient(135deg, #ff8a80 0%, #ffcc80 100%);
    
    background-image: url('../assets/images/pattern.png');
    background-size: 400px;
    background-blend-mode: normal; /* Removed multiply to see pattern better */
}

body.moo-theme .nav__logo .logo-text {
    background: #5d4037;
    color: #fff9f0;
}

/* Moo Overlay */
.moo-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(93, 64, 55, 0.7); /* Slightly reduced background opacity */
    backdrop-filter: blur(4px); /* Reduced blur */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

.moo-overlay:not(.hidden) {
    opacity: 1;
    pointer-events: auto;
}

.moo-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 90%;
    max-width: 500px;
}

.moo-cow {
    width: 180px;
    margin-bottom: -40px;
    z-index: 2;
    /* Blend multiply to remove white/light pixels if any remain, and drop shadow */
    /* Removed mix-blend-mode: multiply since background is now solid cream matching the card */
    filter: drop-shadow(0 4px 8px rgba(0,0,0,0.1));
    animation: cowFloat 3s ease-in-out infinite;
}

@keyframes cowFloat {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50% { transform: translateY(-10px) rotate(2deg); }
}

.moo-card {
    background: #fff9f0;
    padding: 3rem 2rem 2rem;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    text-align: center;
    width: 100%;
    position: relative;
    border: 4px solid #5d4037;
    z-index: 1; /* Ensure card is above cow's mix-blend backdrop if needed */
}

.moo-close {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 2rem;
    color: #8d6e63;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
}

.game-step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.game-step.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.moo-title {
    font-family: 'Comic Sans MS', 'Chalkboard SE', sans-serif; /* Playful font fallbacks */
    font-size: 2rem;
    color: #5d4037;
    margin-bottom: 1rem;
}

.moo-text {
    font-size: 1.1rem;
    color: #795548;
    margin-bottom: 2rem;
}

.moo-options {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Updated button styles to look uniform initially */
.btn--moo, .btn--moo-outline {
    background: #fff9f0;
    color: #5d4037;
    border: 2px solid #5d4037;
}

.btn--moo:hover, .btn--moo-outline:hover {
    background: #5d4037;
    color: #fff9f0;
    transform: translateY(-2px);
}

.btn--moo-blue {
    background: #3498db;
    color: #fff;
    border: 2px solid #3498db;
    box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
}

.btn--moo-blue:hover {
    background: #2980b9;
    border-color: #2980b9;
    transform: translateY(-2px);
}

/* Password Input Styles */
.moo-input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
    width: 100%;
}

.moo-input {
    padding: 12px 20px;
    border: 2px solid #5d4037;
    border-radius: 99px;
    background: #fff;
    color: #5d4037;
    font-size: 1rem;
    text-align: center;
    width: 100%;
    max-width: 280px;
    outline: none;
}

.moo-input:focus {
    border-color: #ff8a80;
    box-shadow: 0 0 0 3px rgba(255, 138, 128, 0.2);
}

/* Ensure cow is absolutely on top of EVERYTHING */
.moo-cow {
    width: 180px;
    margin-bottom: -40px;
    position: relative;
    z-index: 9999 !important; /* Force to top */
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.15));
    animation: cowFloat 3s ease-in-out infinite;
    pointer-events: none; /* Let clicks pass through if needed, though card handles them */
}

/* Ensure overlay is extremely high z-index */
.moo-overlay {
    z-index: 10000;
}