/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Minimal dark theme with Hunch yellow */
    --background: #0a0a0e;
    --background-gradient: radial-gradient(
        circle at 50% 0%,
        rgba(255, 191, 0, 0.1),
        transparent 60%
    );
    --surface: rgba(255, 255, 255, 0.03);
    --surface-elevated: rgba(255, 255, 255, 0.05);
    --surface-hover: rgba(255, 255, 255, 0.08);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);
    --accent: #ffbf00;
    --accent-hover: #ffd633;
    --link: #ffbf00;
    --border: rgba(255, 255, 255, 0.1);
    --border-subtle: rgba(255, 255, 255, 0.05);

    /* Typography - System monospace font like Hunch app */
    --font-family:
        ui-monospace, "SF Mono", Monaco, "Cascadia Code", "Roboto Mono",
        Consolas, "Courier New", monospace;
    --font-size-xs: 0.625rem;
    --font-size-sm: 0.75rem;
    --font-size-base: 0.875rem;
    --font-size-lg: 1rem;
    --font-size-xl: 1.125rem;
    --font-size-2xl: 1.25rem;
    --font-size-3xl: 1.5rem;
    --font-size-4xl: 2rem;

    /* Spacing - Compact but minimal */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-base: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-base: 0.5rem;
    --radius-lg: 0.75rem;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--background);
    background-attachment: fixed;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    letter-spacing: 0.01em;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-base);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
}

.logo {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    font-family: var(--font-family);
    opacity: 0.8;
}

.download-link {
    display: flex;
    align-items: center;
}

/* Main content */
.main {
    flex: 1;
    padding: var(--space-3xl) 0;
}

/* Hero section */
.hero {
    text-align: center;
    margin-bottom: var(--space-3xl);
    padding: var(--space-3xl) 0 var(--space-xl);
    position: relative;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    letter-spacing: -0.02em;
    line-height: 1.2;
    font-family: var(--font-family);
}

.hero-subtitle {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    max-width: 520px;
    margin: 0 auto var(--space-xl) auto;
    line-height: 1.7;
    font-weight: 400;
    font-family: var(--font-family);
    opacity: 0.9;
}

.hero-cta {
    margin-top: var(--space-xl);
}

/* Features section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.feature {
    background: var(--surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-base);
    padding: var(--space-xl);
    transition: all 0.2s ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.feature:hover {
    background: var(--surface-hover);
    border-color: rgba(255, 191, 0, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.feature h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-base);
    font-family: var(--font-family);
}

.feature p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    opacity: 0.9;
}

.wiki-link {
    color: var(--accent);
    font-family: var(--font-family);
    font-size: 0.9em;
}

/* Embedding demo section */
.embedding-demo {
    background: var(--surface);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--space-3xl);
    border-radius: var(--radius-base);
    margin-bottom: var(--space-3xl);
    border: 1px solid var(--border-subtle);
    position: relative;
}

.embedding-demo h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    text-align: center;
    font-family: var(--font-family);
}

.embedding-demo > p {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.embedding-example {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin: var(--space-lg) 0;
    flex-wrap: wrap;
}

.embedding-text {
    background: var(--surface-elevated);
    padding: var(--space-base) var(--space-lg);
    border-radius: var(--radius-base);
    color: var(--text-primary);
    font-style: italic;
    border: 1px solid var(--border-subtle);
    min-width: 300px;
    font-size: var(--font-size-sm);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.embedding-arrow {
    color: var(--text-muted);
    font-size: var(--font-size-lg);
    font-weight: 400;
    opacity: 0.7;
}

.embedding-vector {
    background: var(--surface-elevated);
    padding: var(--space-base) var(--space-lg);
    border-radius: var(--radius-base);
    border: 1px solid var(--border-subtle);
    max-width: 440px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
}

.vector-label {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: 500;
    display: block;
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-family);
}

.vector-numbers {
    font-family: var(--font-family);
    font-size: var(--font-size-xs);
    color: var(--accent);
    word-break: break-all;
    line-height: 1.6;
    opacity: 0.9;
}

.embedding-explanation {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    max-width: 520px;
    margin: 0 auto;
    font-family: var(--font-family);
    opacity: 0.9;
    line-height: 1.6;
}

/* Waitlist section */
.waitlist {
    text-align: center;
    background: var(--surface);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--space-3xl);
    border-radius: var(--radius-base);
    margin-bottom: var(--space-3xl);
    border: 1px solid var(--border-subtle);
}

.waitlist h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    font-family: var(--font-family);
}

.waitlist-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    opacity: 0.9;
}

.waitlist-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-base);
    max-width: 400px;
    margin: 0 auto;
}

.form-row {
    display: flex;
    gap: var(--space-base);
}

.waitlist-form input {
    padding: var(--space-sm) var(--space-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    background: var(--surface-elevated);
    color: var(--text-primary);
    font-size: var(--font-size-sm);
    font-family: inherit;
    transition: all 0.2s ease;
    flex: 1;
    min-height: 44px; /* Better touch target for mobile */
    -webkit-appearance: none;
    appearance: none;
}

.waitlist-form input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 191, 0, 0.1);
}

.waitlist-form input::placeholder {
    color: var(--text-muted);
}

.waitlist-success {
    background: var(--surface-elevated);
    border: 1px solid rgba(255, 191, 0, 0.3);
    border-radius: var(--radius-base);
    padding: var(--space-xl);
    color: var(--text-primary);
    font-family: var(--font-family);
    animation: successSlideIn 0.6s ease-out;
    text-align: center;
}

.waitlist-success p {
    margin: var(--space-base) 0 0 0;
    font-size: var(--font-size-base);
    font-weight: 500;
    opacity: 0.9;
}

.checkmark-container {
    display: flex;
    justify-content: center;
    margin-bottom: var(--space-base);
}

.checkmark-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: checkmarkPop 0.4s ease-out;
    box-shadow: 0 2px 8px rgba(255, 191, 0, 0.2);
}

.checkmark-svg {
    width: 20px;
    height: 20px;
    fill: var(--background);
    opacity: 0;
    animation: checkmarkFadeIn 0.3s ease-out 0.2s forwards;
}

.checkmark-path {
    stroke: var(--background);
    stroke-width: 2.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@keyframes checkmarkPop {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    80% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes checkmarkFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes successSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-xs) var(--space-sm);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-family);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
    min-height: 44px; /* Better touch target for mobile */
    -webkit-tap-highlight-color: transparent;
}

.btn::before {
    content: "";
    position: absolute;
    inset: 0;
    padding: 1px;
    background: linear-gradient(
        135deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    border-radius: inherit;
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask-composite: subtract;
    -webkit-mask-composite: xor;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: var(--accent);
    color: var(--background);
    font-weight: 600;
    font-family: var(--font-family);
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    font-family: var(--font-family);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    color: var(--text-primary);
    border-color: var(--border);
}

.btn-large {
    padding: var(--space-sm) var(--space-base);
    font-size: var(--font-size-sm);
}

.btn-full {
    width: 100%;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--space-xl) 0;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    margin-top: auto;
}


/* Smooth page transitions and animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.hero {
    animation: fadeInUp 0.6s ease-out;
}

.features {
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.embedding-demo {
    animation: scaleIn 0.6s ease-out 0.2s both;
}

.waitlist {
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* Loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

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

/* Responsive design */

/* Large tablets and small desktops */
@media (max-width: 1024px) {
    .container {
        max-width: 960px;
        padding: 0 var(--space-lg);
    }

    .features {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: var(--space-xl);
    }

    .embedding-demo,
    .waitlist {
        padding: var(--space-2xl);
    }
}

/* Tablets */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-base);
    }

    .header {
        padding: var(--space-base) 0;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .main {
        padding: var(--space-2xl) 0;
    }

    .hero {
        padding: var(--space-2xl) 0 var(--space-lg);
        margin-bottom: var(--space-2xl);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
        margin-bottom: var(--space-lg);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
        max-width: 90%;
    }

    .features {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        margin-bottom: var(--space-2xl);
    }

    .feature {
        padding: var(--space-lg);
    }

    .embedding-demo,
    .waitlist {
        padding: var(--space-xl);
        margin-bottom: var(--space-2xl);
    }

    .embedding-example {
        flex-direction: column;
        gap: var(--space-base);
        align-items: stretch;
    }

    .embedding-arrow {
        transform: rotate(90deg);
        align-self: center;
    }

    .embedding-text,
    .embedding-vector {
        min-width: unset;
        max-width: 100%;
    }

    .waitlist-form {
        max-width: 100%;
    }

    .form-row {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

/* Large phones */
@media (max-width: 640px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .hero-title {
        font-size: var(--font-size-xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-sm);
        max-width: 100%;
    }

    .btn-large {
        padding: var(--space-base) var(--space-lg);
        font-size: var(--font-size-base);
    }
}

/* Small phones */
@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-base);
    }

    .main {
        padding: var(--space-lg) 0;
    }

    .hero {
        padding: var(--space-lg) 0;
        margin-bottom: var(--space-lg);
    }

    .hero-title {
        font-size: var(--font-size-lg);
        margin-bottom: var(--space-base);
    }

    .hero-subtitle {
        margin-bottom: var(--space-base);
    }

    .features {
        margin-bottom: var(--space-lg);
    }

    .feature {
        padding: var(--space-base);
    }

    .embedding-demo,
    .waitlist {
        padding: var(--space-base);
        margin-bottom: var(--space-lg);
    }

    .embedding-demo h3,
    .waitlist h3 {
        font-size: var(--font-size-base);
        margin-bottom: var(--space-base);
    }

    .waitlist-description {
        margin-bottom: var(--space-base);
    }

    .embedding-text,
    .embedding-vector {
        padding: var(--space-xs) var(--space-sm);
        font-size: var(--font-size-xs);
    }

    .vector-numbers {
        font-size: 0.65rem;
        line-height: 1.4;
    }

    .btn-large {
        padding: var(--space-sm) var(--space-base);
        font-size: var(--font-size-sm);
    }
}

/* Extra small phones */
@media (max-width: 360px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .hero-title {
        font-size: var(--font-size-base);
    }

    .hero-subtitle {
        font-size: var(--font-size-xs);
    }

    .embedding-demo h3,
    .waitlist h3 {
        font-size: var(--font-size-sm);
    }

    .waitlist-form input {
        padding: var(--space-sm) var(--space-base);
        font-size: var(--font-size-sm);
        min-height: 48px; /* Larger touch target on small screens */
    }
}