/* Fonts imported via index.html for better reliability */

:root {
    --bg-color: #f6f4ee;
    /* Soft Cream background like a16z */
    --text-color: #111111;
    /* Sharp off-black */
    --secondary-text: #555555;
    --border-color: #e2e0d9;
    --jade: #005a4e;
    /* Deep editorial green */
    --jade-muted: rgba(0, 90, 78, 0.05);

    /* Sleek Typography */
    --font-serif: 'Cormorant Garamond', serif;
    --font-body: 'Spectral', serif;
    --font-ui: 'Space Grotesk', sans-serif;

    --container-max-width: 1240px;
    --main-column-width: 720px;
    --sidebar-width: 240px;
    --gap: 120px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    font-weight: 300;
    /* Lighter weight for sleek feel */
    line-height: 1.6;
    margin: 0;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-size: 1.125rem;
}

@media (max-width: 600px) {
    body {
        zoom: 1 !important;
        /* Reset zoom on mobile for consistent behavior */
    }
}

/* Removed zoom in favor of standardized rem units */
.site-scale-wrapper {
    width: 100%;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 40px;
}

header {
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.15) 0%, rgba(0, 0, 0, 0) 60px);
    padding: 30px 40px 0;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    text-align: center;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), background 0.4s ease;
}

header.header--hidden {
    transform: translateY(-100%);
}

/* Gradient is now on base header by default */

.site-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-decoration: none;
    color: var(--text-color);
    text-transform: uppercase;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    /* Subtle lift against images if needed */
}

.layout-grid {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    gap: var(--gap);
    padding: 150px 0;
    align-items: start;
}

aside {
    position: sticky;
    top: 180px;
    /* Offset for header + padding */
}

.sidebar-h1,
h2,
h3,
.name-title {
    font-family: var(--font-serif);
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.sidebar-mission {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--secondary-text);
    line-height: 1.6;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 40px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 15px;
    border-top: 1px solid var(--border-color);
    padding-top: 40px;
}

.nav-item {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--secondary-text);
    text-decoration: none;
    padding-left: 20px;
    border-left: 2px solid transparent;
    transition: all 0.2s ease;
    position: relative;
    z-index: 10;
    pointer-events: auto !important;
    cursor: pointer;
}

.nav-item:active {
    opacity: 0.7;
}

.nav-item:hover,
.nav-item.active {
    color: var(--jade);
}

main {
    max-width: var(--main-column-width);
}

article header {
    background: transparent;
    border: none;
    padding: 0;
    margin-bottom: 60px;
    text-align: left;
    position: static;
}

h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 4vw, 3.8rem);
    font-weight: 300;
    /* a16z light-weight H1 */
    line-height: 1.15;
    letter-spacing: -0.04em;
    margin-bottom: 20px;
}

.cta-button {
    display: inline-block;
    padding: 12px 30px;
    border: 1px solid var(--jade);
    color: var(--jade);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    z-index: 10;
    pointer-events: auto !important;
    cursor: pointer;
}

.cta-button:active {
    transform: translateY(1px);
    opacity: 0.8;
}

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--jade);
    color: white;
    padding: 12px 24px;
    border-radius: 4px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 2000;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

/* AI Twin Chat UI */
.chat-trigger {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--jade);
    color: white;
    padding: 15px 25px;
    border-radius: 50px;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(51, 109, 93, 0.3);
    z-index: 1500;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.chat-trigger:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 40px rgba(51, 109, 93, 0.4);
}

/* AI Invitation Notification */
.ai-invitation {
    position: fixed;
    bottom: 95px;
    right: 30px;
    width: 320px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    z-index: 1400;
    transform: translateY(20px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.ai-invitation.show {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

.ai-invitation::after {
    content: '';
    position: absolute;
    bottom: -8px;
    right: 35px;
    width: 16px;
    height: 16px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    transform: rotate(45deg);
}

.ai-invitation-content {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-color);
    margin-bottom: 12px;
}

.ai-invitation-close {
    position: absolute;
    top: 10px;
    right: 12px;
    cursor: pointer;
    opacity: 0.3;
    transition: opacity 0.2s;
}

.ai-invitation-close:hover {
    opacity: 1;
}

.chat-window {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 450px;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-color);
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    z-index: 3000;
    transform: translateX(100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.chat-window.active {
    transform: translateX(0);
}

.chat-header {
    padding: 30px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-header h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    color: var(--text-color);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    max-width: 85%;
    padding: 12px 18px;
    border-radius: 12px;
    font-size: 0.95rem;
    /* Better readability */
}

/* Mobile Adjustments */
@media (max-width: 600px) {
    body.chat-open {
        overflow: hidden;
    }

    .chat-window {
        --mobile-bottom: 0px;
        --mobile-height: 100dvh;
        width: 100% !important;
        max-width: 100% !important;
        height: var(--mobile-height) !important;
        bottom: var(--mobile-bottom) !important;
        top: 0 !important;
        right: 0 !important;
        left: 0 !important;
        border-radius: 0 !important;
        border: none !important;
        box-shadow: none !important;
        transform: translateY(110%);
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1) !important;
    }

    .chat-window.active {
        transform: translateY(0) !important;
    }

    .chat-header {
        padding: 20px !important;
    }

    .chat-messages {
        padding: 20px !important;
    }
}

.message.ai {
    align-self: flex-start;
    background: white;
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.message.user {
    align-self: flex-end;
    background: var(--jade);
    color: white;
}

.chat-input-area {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: white;
}

.chat-input {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 15px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.chat-input:focus {
    border-color: var(--jade);
}

.suggestion-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.pill {
    padding: 8px 16px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--secondary-text);
}

.pill:hover {
    border-color: var(--jade);
    color: var(--jade);
}

.typing-indicator {
    font-size: 0.8rem;
    color: var(--secondary-text);
    margin-left: 20px;
    margin-bottom: 10px;
    display: none;
}

.category-tag {
    color: var(--jade);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 30px;
    /* Precise align with sidebar mission (150+30=180px) */
    margin-bottom: 20px;
    display: block;
}

section {
    margin-bottom: 100px;
}

h2 {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    font-weight: 400;
    margin: 60px 0 30px;
    letter-spacing: -0.02em;
}

p {
    margin-bottom: 1.5rem;
}

blockquote {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    line-height: 1.25;
    font-style: italic;
    margin: 80px 0;
    padding: 80px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    letter-spacing: -0.02em;
}

.experience-item {
    margin-bottom: 60px;
    border-left: 2px solid var(--border-color);
    padding-left: 30px;
}

.meta {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--jade);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

h3 {
    font-family: var(--font-sans);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 5px;
}

a {
    color: var(--jade);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--text-color);
}

footer {
    padding: 80px 40px;
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: 0.85rem;
    color: var(--secondary-text);
}

@media (max-width: 1000px) {
    .layout-grid {
        grid-template-columns: 1fr;
        padding-top: 150px;
    }

    aside {
        position: static;
        margin-bottom: 60px;
    }

    h1 {
        font-size: 2.5rem;
    }
}

/* Additional Mobile Optimizations */
@media (max-width: 600px) {
    /* Merged with main chat-window media query above for cleaner overrides */

    .ai-invitation {
        width: calc(100% - 40px);
        right: 20px;
        left: 20px;
        bottom: 80px;
        padding: 15px;
    }

    .ai-invitation::after {
        right: 40px;
    }

    .chat-trigger {
        bottom: 20px;
        right: 20px;
        padding: 12px 20px;
    }

    blockquote {
        font-size: 1.5rem !important;
        padding: 40px 20px !important;
        margin: 40px 0 !important;
    }

    h2 {
        font-size: 1.75rem !important;
    }

    .experience-item {
        padding-left: 20px !important;
    }

    h1 {
        font-size: 2.2rem !important;
    }
}