/**
 * Neo-Brutalism Design System
 * 新野兽派设计系统
 *
 * 核心原则: 直接、锐利、清晰
 * Core Principles: Directness, Sharpness, Clarity
 */

/* ============================================
   CSS Variables - Color Palette
   ============================================ */
:root {
    --brand-black: #0a0a0a;
    --brand-white: #f4f4f0;
    --brand-accent: #FF4D00;
    --brand-blue: #0047AB;
    --brand-green: #059669;
    --brand-gray: #8a8a8a;

    /* Grid */
    --grid-line: #e5e5e5;
    --grid-size: 40px;

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

    /* Typography */
    --font-sans: 'Noto Sans SC', 'Inter', sans-serif;
    --font-serif: 'Noto Serif SC', serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* ============================================
   Base Styles
   ============================================ */
body {
    background-color: var(--brand-white);
    color: var(--brand-black);
    font-family: var(--font-sans);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Grid Background Pattern
   ============================================ */
.bg-grid {
    background-image:
        linear-gradient(var(--grid-line) 1px, transparent 1px),
        linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: var(--grid-size) var(--grid-size);
}

/* ============================================
   Typography Classes
   ============================================ */
.display-text {
    letter-spacing: -0.02em;
    line-height: 1.1;
    font-weight: 900;
}

.mono-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.serif-quote {
    font-family: var(--font-serif);
    font-style: italic;
    font-size: 1.25rem;
    line-height: 1.6;
}

/* ============================================
   Bento Box Card System
   ============================================ */
.bento-card {
    background: white;
    border: 1px solid var(--brand-black);
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.bento-card:hover {
    transform: translateY(-4px);
    box-shadow: 8px 8px 0px var(--brand-black);
}

/* Top accent line animation */
.bento-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--brand-black);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.bento-card:hover::after {
    transform: scaleX(1);
}

/* Card variants */
.bento-card--accent {
    background: var(--brand-accent);
    color: white;
}

.bento-card--blue {
    background: var(--brand-blue);
    color: white;
}

.bento-card--black {
    background: var(--brand-black);
    color: white;
}

/* ============================================
   Hard Shadow System (No Blur)
   ============================================ */
.shadow-hard {
    box-shadow: 8px 8px 0px var(--brand-black);
}

.shadow-hard-sm {
    box-shadow: 4px 4px 0px var(--brand-black);
}

.shadow-hard-accent {
    box-shadow: 8px 8px 0px var(--brand-accent);
}

/* ============================================
   Buttons
   ============================================ */
.btn-primary {
    background: var(--brand-black);
    color: white;
    border: 2px solid var(--brand-black);
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-mono);
}

.btn-primary:hover {
    background: var(--brand-accent);
    border-color: var(--brand-accent);
    transform: translateY(-2px);
    box-shadow: 4px 4px 0px var(--brand-black);
}

.btn-secondary {
    background: white;
    color: var(--brand-black);
    border: 2px solid var(--brand-black);
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: var(--font-mono);
}

.btn-secondary:hover {
    background: var(--brand-black);
    color: white;
    transform: translateY(-2px);
    box-shadow: 4px 4px 0px var(--brand-black);
}

/* ============================================
   Marker Highlight Effect
   ============================================ */
.marker-highlight {
    background: linear-gradient(
        120deg,
        rgba(255, 77, 0, 0.15) 0%,
        rgba(255, 77, 0, 0.15) 100%
    );
    background-repeat: no-repeat;
    background-size: 100% 40%;
    background-position: 0 88%;
    transition: background-size 0.25s ease-in;
}

.marker-highlight:hover {
    background-size: 100% 88%;
}

/* ============================================
   Scroll Reveal Animation
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* Staggered reveal for lists */
.reveal-stagger > *:nth-child(1) { transition-delay: 0.1s; }
.reveal-stagger > *:nth-child(2) { transition-delay: 0.2s; }
.reveal-stagger > *:nth-child(3) { transition-delay: 0.3s; }
.reveal-stagger > *:nth-child(4) { transition-delay: 0.4s; }
.reveal-stagger > *:nth-child(5) { transition-delay: 0.5s; }

/* ============================================
   Divider with Center Text
   ============================================ */
.divider-with-text {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.divider-with-text::before,
.divider-with-text::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--brand-black);
    opacity: 0.2;
}

.divider-with-text .accent-dot {
    color: var(--brand-accent);
}

/* ============================================
   Progress Bars
   ============================================ */
.progress-container {
    height: 4px;
    width: 100%;
    background: var(--grid-line);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--brand-accent);
    transition: width 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.progress-bar--green {
    background: var(--brand-green);
}

.progress-bar--blue {
    background: var(--brand-blue);
}

/* ============================================
   Scrollbar Styling
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--brand-white);
}

::-webkit-scrollbar-thumb {
    background: var(--brand-black);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--brand-accent);
}

/* ============================================
   Icon Badge
   ============================================ */
.icon-badge {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: var(--brand-black);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-badge--accent {
    background: var(--brand-accent);
}

.icon-badge--outline {
    background: transparent;
    border: 2px solid var(--brand-black);
    color: var(--brand-black);
}

/* ============================================
   Tag / Pill
   ============================================ */
.tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--brand-black);
    color: white;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 0.25rem;
}

.tag--outline {
    background: transparent;
    border: 2px solid var(--brand-black);
    color: var(--brand-black);
}

.tag--accent {
    background: var(--brand-accent);
}

.tag--personal {
    background: white;
    color: var(--brand-black);
    border: 2px solid var(--brand-black);
}

.tag--reading {
    background: #92400E;
}

.tag--investment {
    background: var(--brand-green);
}

.tag--ai {
    background: var(--brand-blue);
}

.tag--career {
    background: #0891B2;
}

/* ============================================
   Responsive Utilities
   ============================================ */
@media (max-width: 768px) {
    .bento-card:hover {
        transform: translateY(-2px);
        box-shadow: 4px 4px 0px var(--brand-black);
    }

    .shadow-hard {
        box-shadow: 4px 4px 0px var(--brand-black);
    }

    .display-text {
        font-size: 2.5rem;
    }
}

/* ============================================
   Accessibility
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* Focus styles */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 2px solid var(--brand-accent);
    outline-offset: 2px;
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .bg-grid {
        background: white;
    }

    .bento-card {
        box-shadow: none;
        border: 1px solid #000;
    }

    .reveal {
        opacity: 1;
        transform: none;
    }
}