/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Piazzolla:ital,wght@0,400;0,700;1,400;1,700&family=Rethink+Sans:wght@400;500;700&display=swap');

/* CSS Custom Properties for Dark Mode */
:root {
    --bg-color: #F2F1ED;
    --text-color: #000;
    --border-color: #ddd;
    --accent-color: #000;
    --image-placeholder: #e5e5e5;
    --nav-bg: rgba(242, 241, 237, 0.95);
    --card-bg: rgba(255, 255, 255, 0.8);
    --shadow-light: rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #f0f0f0;
    --border-color: #333;
    --accent-color: #fff;
    --image-placeholder: #333;
    --nav-bg: rgba(26, 26, 26, 0.95);
    --card-bg: rgba(42, 42, 42, 0.8);
    --shadow-light: rgba(255, 255, 255, 0.1);
}

/* Global Styles */
html, body {
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Rethink Sans', sans-serif;
    line-height: 1.6;
    letter-spacing: -0.02em;
    box-sizing: border-box;
    width: 100%;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

*, *:before, *:after {
    box-sizing: inherit;
}

.app {
    display: grid;
    grid-template-rows: auto 1fr auto;
    gap: 48px;
    padding: 30px;
    width: 100%;
    min-height: 100vh;
}

/* Navigation */
.navigation {
    position: relative;
    width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: 20px;
    border: 1px solid var(--border-color);
}

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

.logo {
    font-weight: 700;
    font-size: 1.8rem;
    cursor: pointer;
    transition: opacity 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo:hover {
    opacity: 0.7;
}

.logo-img {
    height: 32px;
    width: auto;
}

/* Dark mode - invert colors to make black become white */
[data-theme="dark"] .logo-img {
    filter: brightness(0) invert(1);
}

.menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-color);
    cursor: pointer;
    font-family: inherit;
    font-size: 1.4rem;
    color: var(--text-color);
    padding: 8px;
    transition: background-color 0.2s;
}

.menu-toggle:hover {
    background-color: var(--image-placeholder);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
    padding: 0;
    margin: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    transition: opacity 0.2s;
    font-weight: 400;
    padding: 8px 12px;
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    opacity: 0.6;
    background-color: var(--image-placeholder);
}

.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    color: var(--text-color);
    padding: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 44px;
    overflow: hidden;
    position: relative;
}

/* Theme Toggle Animation Container */
.theme-toggle-container {
    position: relative;
    width: 40px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(0, 0, 0, 0.02);
    transition: background 0.6s ease;
}
.theme-toggle:hover, .theme-toggle:focus {
    background: none;
    outline: none;
}
[data-theme="dark"] .theme-toggle-container {
    background: rgba(255, 255, 255, 0.03);
}

.sun-moon-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Sun and Moon positioning */
.sun, .moon {
    position: absolute;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
}

.sun svg, .moon svg {
    width: 16px;
    height: 16px;
    color: var(--text-color);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light mode - Sun visible, Moon hidden below */
.sun {
    top: 2px;
    opacity: 1;
}

.moon {
    top: 35px;
    opacity: 0;
}

/* Dark mode - Moon rises, Sun dips */
[data-theme="dark"] .sun {
    top: 35px;
    opacity: 0;
    transform: translateX(-50%) scale(0.8);
}

[data-theme="dark"] .moon {
    top: 2px;
    opacity: 1;
    transform: translateX(-50%) scale(1);
}

/* Hover effects for extra delight */
.theme-toggle:hover .sun {
    transform: translateX(-50%) scale(1.1);
}

.theme-toggle:hover .moon {
    transform: translateX(-50%) scale(1.1);
}

[data-theme="dark"] .theme-toggle:hover .sun {
    transform: translateX(-50%) scale(0.9);
}

[data-theme="dark"] .theme-toggle:hover .moon {
    transform: translateX(-50%) scale(1.1);
}

/* SVG color transitions */
.sun svg {
    color: var(--text-color);
}

.moon svg {
    color: var(--text-color);
}

/* Subtle opacity changes for extra visual feedback */
[data-theme="dark"] .sun svg {
    opacity: 0.6;
}

[data-theme="light"] .moon svg {
    opacity: 0.6;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    text-align: center;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    padding: 20px;
    margin-top: 40px;
}

.footer-content p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Main Content Area */
.main-content {
    width: 100%;
    min-height: 70vh;
}

/* Page Headers */
.page-header {
    margin-bottom: 40px;
}

.page-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 500;
    line-height: 1.1;
    margin: 0 0 1rem 0;
}

/* Accent Font Styles */
blockquote, .accent-text {
    font-family: 'Piazzolla', serif;
    font-style: italic;
    font-size: 1.6rem;
    margin: 40px 0;
    padding-left: 25px;
    border-left: 3px solid var(--accent-color);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-large {
    font-size: 1.2rem;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-40 {
    margin-bottom: 40px;
}

.mt-20 {
    margin-top: 20px;
}

.mt-40 {
    margin-top: 40px;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, var(--image-placeholder) 25%, transparent 50%, var(--image-placeholder) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Selection colors */
::selection {
    background-color: var(--accent-color);
    color: var(--bg-color);
}