/* DESIGN SYSTEM
Colors:
Ash #FAF9F5 (light bg)
Depth #16191C (dark bg)
Mist #ECEAE3 (dark-mode text)
Graphite #2B2E30 (light-mode text)
Fog #83898C (secondary text)
Ember low/mid/high (#E4C989/#E2932E/#C94E1E)
Moss #4F7A52 (success/accent)
Rust #8C3A22

Typography:
Fraunces for hero headline and section titles
General Sans for body copy, nav, buttons, captions
*/

:root {
    --ash: #FAF9F5;
    --depth: #16191C;
    --mist: #ECEAE3;
    --graphite: #2B2E30;
    --fog: #83898C;
    --ember-low: #E4C989;
    --ember-mid: #E2932E;
    --ember-high: #C94E1E;
    --moss: #4F7A52;
    --rust: #8C3A22;

    /* Light Theme Defaults */
    --bg-color: var(--ash);
    --text-primary: var(--graphite);
    --text-secondary: var(--fog);
    --btn-bg: var(--depth);
    --btn-text: var(--ash);
    --btn-hover: #000000;
    --border-color: rgba(43, 46, 48, 0.1);
}

[data-theme="dark"] {
    --bg-color: var(--depth);
    --text-primary: var(--mist);
    --text-secondary: var(--fog);
    --btn-bg: var(--mist);
    --btn-text: var(--depth);
    --btn-hover: #FFFFFF;
    --border-color: rgba(236, 234, 227, 0.1);
}

/* System Preference Match */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-color: var(--depth);
        --text-primary: var(--mist);
        --text-secondary: var(--fog);
        --btn-bg: var(--mist);
        --btn-text: var(--depth);
        --btn-hover: #FFFFFF;
        --border-color: rgba(236, 234, 227, 0.1);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'General Sans', sans-serif;
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

h1, h2, h3, .wordmark {
    font-family: 'Fraunces', serif;
    font-weight: 600;
}

/* Nav */
.nav {
    display: flex;
    justify-content: flex-end;
    padding: 1.5rem 2rem;
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    z-index: 10;
}

.theme-toggle button {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.theme-toggle button:hover {
    color: var(--ember-mid);
}

/* Hero Section */
.hero {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
}

.logo-mark {
    margin-bottom: 1.5rem;
}

.logo-light {
    display: block;
    width: 96px;
    height: 96px;
    object-fit: contain;
    border-radius: 20%; /* In case it has a squircle shape, though it's on matched bg now */
}

.logo-dark {
    display: none;
    width: 96px;
    height: 96px;
    object-fit: contain;
    border-radius: 20%;
}

[data-theme="dark"] .logo-light {
    display: none;
}

[data-theme="dark"] .logo-dark {
    display: block;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .logo-light {
        display: none;
    }
    :root:not([data-theme="light"]) .logo-dark {
        display: block;
    }
}

.wordmark {
    font-size: 4.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin-bottom: 3rem;
}

/* Buttons */
.button {
    display: inline-block;
    background-color: var(--btn-bg);
    color: var(--btn-text);
    padding: 1rem 2.5rem;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    border-radius: 2px; /* Flat design */
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.button:hover {
    background-color: var(--btn-hover);
}

.button:active {
    transform: scale(0.98);
}

/* Core Idea */
.core-idea {
    padding: 6rem 2rem;
    background-color: transparent;
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.core-idea h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.core-idea p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Features */
.features {
    padding: 4rem 2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
}

.feature-item {
    text-align: left;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.feature-item p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

.mockup-container {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.mockup-light {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

.mockup-dark {
    display: none;
    width: 100%;
    height: auto;
    object-fit: cover;
}

[data-theme="dark"] .mockup-light {
    display: none;
}

[data-theme="dark"] .mockup-dark {
    display: block;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .mockup-light {
        display: none;
    }
    :root:not([data-theme="light"]) .mockup-dark {
        display: block;
    }
}

/* Download Section */
.download-section {
    padding: 6rem 2rem;
    text-align: center;
}

.download-section h2 {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
}

.download-note {
    margin-top: 2rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.download-note p {
    margin-bottom: 0.25rem;
}

.download-note strong {
    color: var(--text-primary);
}

/* Footer */
.footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer a {
    color: inherit;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 600ms ease-out, transform 600ms ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced Motion Override */
@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: translateY(0);
        transition: none;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .wordmark {
        font-size: 3.5rem;
    }
    
    .core-idea h2, .download-section h2 {
        font-size: 2rem;
    }
    
    .core-idea p {
        font-size: 1.15rem;
    }
    
    .feature-item {
        text-align: center;
    }
    
    .placeholder-screenshot {
        max-width: 280px;
        margin: 0 auto;
    }
}