/* ============================================
   OBSERVATÓRIO LEGAL DA INTELIGÊNCIA ARTIFICIAL
   Design System & Styles
   ============================================ */

/* --- Design Tokens --- */
:root {
    /* Colors */
    --obs-purple: #4B10D4;
    --obs-purple-light: #6C2BFF;
    --obs-navy: #090D2C;
    --obs-navy-light: #10183D;
    --obs-blue: #1A2350;
    --obs-cyan: #5DE1FF;
    --obs-white: #FFFFFF;
    --obs-surface: #F4F7FF;
    --obs-text: #E8ECF5;
    --obs-muted: #9DA9C7;
    --obs-border: rgba(157, 169, 199, 0.15);

    /* Gradients */
    --grad-purple: linear-gradient(135deg, #4B10D4, #6C2BFF);
    --grad-hero: linear-gradient(160deg, #090D2C 0%, #10183D 40%, #1A1040 70%, #090D2C 100%);
    --grad-card: linear-gradient(145deg, rgba(75, 16, 212, 0.08), rgba(108, 43, 255, 0.03));
    --grad-text: linear-gradient(90deg, #6C2BFF, #5DE1FF);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(9, 13, 44, 0.3);
    --shadow-md: 0 8px 32px rgba(9, 13, 44, 0.4);
    --shadow-lg: 0 16px 64px rgba(9, 13, 44, 0.5);
    --shadow-glow: 0 0 30px rgba(75, 16, 212, 0.2);
    --shadow-glow-cyan: 0 0 20px rgba(93, 225, 255, 0.1);

    /* Blur */
    --blur-sm: 8px;
    --blur-md: 16px;
    --blur-lg: 32px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-reveal: 0.8s cubic-bezier(0.16, 1, 0.3, 1);

    /* Content width */
    --max-width: 1280px;
    --max-width-narrow: 900px;

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: var(--font-body);
    background: var(--obs-navy);
    color: var(--obs-text);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg { display: block; max-width: 100%; }

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul { list-style: none; }

/* --- Accessibility --- */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-sm);
    background: var(--obs-purple);
    color: var(--obs-white);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    z-index: 10000;
    font-weight: 600;
}
.skip-link:focus {
    top: var(--space-sm);
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* --- Observatory Grid Background --- */
.obs-grid-bg {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 0;
    background-image:
        linear-gradient(rgba(75, 16, 212, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(75, 16, 212, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
}

/* --- Container --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

@media (max-width: 768px) {
    .container { padding: 0 var(--space-sm); }
}

/* --- Navigation --- */
.nav-header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    z-index: 1000;
    transition: background var(--transition-base), backdrop-filter var(--transition-base);
    padding: var(--space-sm) 0;
}

.nav-header.scrolled {
    background: rgba(9, 13, 44, 0.85);
    backdrop-filter: blur(var(--blur-md));
    -webkit-backdrop-filter: blur(var(--blur-md));
    border-bottom: 1px solid var(--obs-border);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.nav-logo {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
    flex-shrink: 0;
}
.nav-logo .logo-main {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--obs-white);
    letter-spacing: -0.02em;
}
.nav-logo .logo-sub {
    font-size: 0.55rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-muted);
}

.nav-menu {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}
.nav-menu a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--obs-muted);
    transition: color var(--transition-fast);
    position: relative;
    white-space: nowrap;
}
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0;
    height: 1.5px;
    background: var(--grad-purple);
    transition: width var(--transition-base);
}
.nav-menu a:hover, .nav-menu a:focus {
    color: var(--obs-white);
}
.nav-menu a:hover::after, .nav-menu a:focus::after {
    width: 100%;
}

.nav-cta {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--obs-white);
    background: var(--grad-purple);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-xl);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}
.nav-cta:hover { opacity: 0.9; transform: translateY(-1px); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
    flex-direction: column;
    gap: 5px;
    z-index: 1001;
}
.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--obs-white);
    border-radius: 2px;
    transition: var(--transition-base);
}
.nav-toggle.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
}
.nav-toggle.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

@media (max-width: 1024px) {
    .nav-menu, .nav-cta { display: none; }
    .nav-toggle { display: flex; }
}

/* Mobile Menu */
.mobile-menu-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(9, 13, 44, 0.97);
    backdrop-filter: blur(var(--blur-lg));
    -webkit-backdrop-filter: blur(var(--blur-lg));
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-base);
}
.mobile-menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}
.mobile-nav-links {
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}
.mobile-nav-links a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--obs-muted);
    transition: color var(--transition-fast);
}
.mobile-nav-links a:hover { color: var(--obs-white); }
.mobile-cta {
    display: inline-block;
    background: var(--grad-purple);
    color: var(--obs-white) !important;
    padding: 0.75rem 2rem;
    border-radius: var(--radius-xl);
    margin-top: var(--space-sm);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.85rem 2rem;
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    gap: 0.5rem;
    white-space: nowrap;
}
.btn-primary {
    background: var(--grad-purple);
    color: var(--obs-white);
    box-shadow: 0 4px 16px rgba(75, 16, 212, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(75, 16, 212, 0.4);
}
.btn-outline {
    background: transparent;
    color: var(--obs-white);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
}
.btn-outline:hover {
    border-color: var(--obs-purple-light);
    background: rgba(75, 16, 212, 0.1);
}

/* --- Section Shared --- */
.section {
    position: relative;
    z-index: 1;
    padding: var(--space-3xl) 0;
}
.section-header {
    text-align: center;
    max-width: var(--max-width-narrow);
    margin: 0 auto var(--space-xl);
}
.section-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--obs-purple-light);
    margin-bottom: var(--space-sm);
    padding: 0.3rem 1rem;
    border: 1px solid rgba(108, 43, 255, 0.25);
    border-radius: var(--radius-xl);
    background: rgba(108, 43, 255, 0.06);
}
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--obs-white);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}
.section-description {
    font-size: 1.05rem;
    color: var(--obs-muted);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto;
}

/* --- Text Gradient --- */
.text-gradient {
    background: var(--grad-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Reveal Animation --- */
.reveal-el {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-reveal), transform var(--transition-reveal);
}
.reveal-el.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
    background: var(--grad-hero);
    overflow: hidden;
    padding-top: 80px;
}
.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background:
        radial-gradient(ellipse at 30% 50%, rgba(75, 16, 212, 0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 30%, rgba(93, 225, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}
.hero-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    position: relative;
}
.hero-content { position: relative; z-index: 2; }
.hero-tag {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--obs-purple-light);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
}
.hero-headline {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--obs-white);
    margin-bottom: var(--space-md);
    letter-spacing: -0.03em;
}
.hero-subheadline {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: var(--obs-muted);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
    max-width: 520px;
}
.hero-buttons {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}
.hero-indicators {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}
.hero-indicators .indicator {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--obs-muted);
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-xl);
    background: rgba(255, 255, 255, 0.03);
}

.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 500px;
}
#governance-globe {
    width: 100%;
    height: 500px;
    max-width: 550px;
}
.globe-labels {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
}
.globe-label {
    position: absolute;
    font-family: var(--font-heading);
    font-size: 0.6rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-muted);
    opacity: 0.5;
    animation: float-label 6s ease-in-out infinite;
}
.gl-ethics { top: 10%; left: 15%; animation-delay: 0s; }
.gl-law { top: 5%; right: 20%; animation-delay: 1s; }
.gl-society { bottom: 20%; left: 5%; animation-delay: 2s; }
.gl-democracy { bottom: 10%; right: 10%; animation-delay: 3s; }
.gl-innovation { top: 40%; left: 0; animation-delay: 4s; }
.gl-sovereignty { top: 35%; right: 0; animation-delay: 5s; }

@keyframes float-label {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50% { transform: translateY(-8px); opacity: 0.8; }
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
}
.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--obs-purple-light), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}
@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-subheadline { margin-left: auto; margin-right: auto; }
    .hero-buttons { justify-content: center; }
    .hero-indicators { justify-content: center; }
    .hero-visual { min-height: 350px; }
    #governance-globe { height: 350px; }
}
@media (max-width: 430px) {
    .hero-visual { min-height: 280px; }
    #governance-globe { height: 280px; }
}

/* ============================================
   OBSERVATORY / PILLARS
   ============================================ */
.pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}
.pillar-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.pillar-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 2px;
    background: var(--grad-purple);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.pillar-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(108, 43, 255, 0.3);
    transform: translateY(-4px);
}
.pillar-card:hover::before { opacity: 1; }

.pillar-icon {
    width: 48px; height: 48px;
    margin: 0 auto var(--space-md);
    color: var(--obs-purple-light);
}
.pillar-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-xs);
}
.pillar-text {
    font-size: 0.9rem;
    color: var(--obs-muted);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .pillars-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 430px) {
    .pillars-grid { grid-template-columns: 1fr; }
}

/* ============================================
   INDICATORS — Policy Intelligence Cards
   ============================================ */
.section-indicators {
    background: linear-gradient(180deg, var(--obs-navy) 0%, var(--obs-navy-light) 100%);
}
.indicators-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
}
.indicator-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.indicator-card::after {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 40px; height: 40px;
    background: radial-gradient(circle, rgba(75, 16, 212, 0.15), transparent 70%);
    pointer-events: none;
}
.indicator-card:hover {
    border-color: rgba(108, 43, 255, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}
.indicator-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}
.indicator-number {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--obs-purple-light);
    letter-spacing: 0.1em;
}
.indicator-status {
    font-size: 0.55rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--obs-cyan);
    padding: 0.15rem 0.5rem;
    border: 1px solid rgba(93, 225, 255, 0.2);
    border-radius: var(--radius-sm);
}
.indicator-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-sm);
}
.indicator-bar {
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    margin-bottom: var(--space-xs);
    overflow: hidden;
}
.indicator-fill {
    height: 100%;
    background: var(--grad-purple);
    border-radius: 2px;
    transition: width 1.5s ease;
}
.indicator-coord {
    font-size: 0.6rem;
    font-family: var(--font-heading);
    color: rgba(157, 169, 199, 0.4);
    letter-spacing: 0.05em;
}

@media (max-width: 1024px) {
    .indicators-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 430px) {
    .indicators-grid { grid-template-columns: 1fr; }
}

/* ============================================
   AI POLICY MONITOR
   ============================================ */
.section-policy {
    background: linear-gradient(180deg, var(--obs-navy-light), var(--obs-navy));
}
.policy-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-md);
}
.policy-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}
.policy-card:hover {
    border-color: rgba(108, 43, 255, 0.3);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}
.policy-flag {
    width: 40px;
    margin-bottom: var(--space-sm);
}
.policy-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--obs-white);
    margin-bottom: var(--space-md);
}
.policy-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}
.policy-field {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}
.policy-label {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-muted);
}
.policy-value {
    font-size: 0.85rem;
    color: var(--obs-text);
    font-weight: 500;
}
.policy-date { color: var(--obs-muted); font-size: 0.8rem; }

.status-active { color: #4ADE80; }
.status-progress { color: #FBBF24; }
.status-partial { color: #FB923C; }
.status-early { color: var(--obs-muted); }

.maturity-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.06);
    border-radius: 2px;
    overflow: hidden;
}
.maturity-fill {
    height: 100%;
    background: var(--grad-purple);
    border-radius: 2px;
    transition: width 1.5s ease;
}

/* ============================================
   RESEARCH
   ============================================ */
.research-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}
.research-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.research-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
    background: var(--grad-purple);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}
.research-card:hover::before { transform: scaleX(1); }
.research-card:hover {
    border-color: rgba(108, 43, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.research-category {
    display: inline-block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-cyan);
    margin-bottom: var(--space-sm);
}
.research-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}
.research-summary {
    font-size: 0.9rem;
    color: var(--obs-muted);
    line-height: 1.7;
    flex: 1;
}
.research-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--obs-border);
}
.research-footer time {
    font-size: 0.8rem;
    color: var(--obs-muted);
}
.research-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--obs-purple-light);
    transition: color var(--transition-fast);
}
.research-link:hover { color: var(--obs-cyan); }

@media (max-width: 1024px) {
    .research-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 430px) {
    .research-grid { grid-template-columns: 1fr; }
}

/* ============================================
   CARTA ABERTA
   ============================================ */
.section-letter {
    background: linear-gradient(180deg, var(--obs-navy), var(--obs-navy-light));
}
.letter-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-xl);
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}
.letter-visual {
    display: flex;
    justify-content: center;
}
.letter-doc {
    width: 180px;
    padding: var(--space-lg) var(--space-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-md);
    display: flex;
    flex-direction: column;
    gap: 10px;
    position: relative;
}
.letter-doc-line {
    height: 3px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 2px;
}
.letter-doc-line.short { width: 60%; }
.letter-doc-seal {
    width: 40px; height: 40px;
    margin: var(--space-sm) auto 0;
}
.letter-content .section-tag { margin-bottom: var(--space-sm); }
.letter-text {
    font-size: 1rem;
    color: var(--obs-muted);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}
.letter-buttons {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .letter-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .letter-buttons { justify-content: center; }
}

/* ============================================
   PUBLICATIONS
   ============================================ */
.section-publications {
    background: var(--obs-navy-light);
}
.publications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}
.pub-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
}
.pub-card:hover {
    border-color: rgba(108, 43, 255, 0.3);
    transform: translateY(-3px);
}
.pub-type {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-purple-light);
    background: rgba(108, 43, 255, 0.08);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-xs);
    align-self: flex-start;
}
.pub-date {
    font-size: 0.75rem;
    color: var(--obs-muted);
    margin-bottom: var(--space-sm);
}
.pub-title {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}
.pub-summary {
    font-size: 0.88rem;
    color: var(--obs-muted);
    line-height: 1.7;
    flex: 1;
}
.pub-meta {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-md);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--obs-border);
    font-size: 0.78rem;
    color: var(--obs-muted);
}

@media (max-width: 1024px) {
    .publications-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 430px) {
    .publications-grid { grid-template-columns: 1fr; }
}

/* ============================================
   OBSERVATORY INSIGHTS
   ============================================ */
.section-insights {
    background: var(--obs-navy);
}
.insights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}
.insight-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    position: relative;
    transition: all var(--transition-base);
}
.insight-card:hover {
    border-color: rgba(93, 225, 255, 0.2);
    box-shadow: var(--shadow-glow-cyan);
}
.insight-icon-area {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: var(--space-sm);
}
.insight-line {
    width: 24px;
    height: 1px;
    background: var(--obs-cyan);
    opacity: 0.5;
}
.insight-dot {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--obs-cyan);
}
.insight-label {
    display: block;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-cyan);
    margin-bottom: var(--space-xs);
}
.insight-text {
    font-size: 0.95rem;
    color: var(--obs-text);
    line-height: 1.7;
    font-style: italic;
}

@media (max-width: 768px) {
    .insights-grid { grid-template-columns: 1fr; }
}

/* ============================================
   GLOBAL MAP
   ============================================ */
.section-map {
    background: linear-gradient(180deg, var(--obs-navy), var(--obs-navy-light));
}
.world-map-container {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    aspect-ratio: 2 / 1;
    position: relative;
}
#world-map {
    width: 100%;
    height: 100%;
}

/* ============================================
   PROJECTS
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}
.project-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}
.project-card:hover {
    border-color: rgba(93, 225, 255, 0.2);
    transform: translateY(-3px);
}
.project-card-placeholder {
    border-style: dashed;
    opacity: 0.5;
}
.project-icon {
    width: 32px; height: 32px;
    margin-bottom: var(--space-sm);
}
.project-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-xs);
}
.project-card p {
    font-size: 0.9rem;
    color: var(--obs-muted);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .projects-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 430px) {
    .projects-grid { grid-template-columns: 1fr; }
}

/* ============================================
   EVENTS
   ============================================ */
.section-events {
    background: var(--obs-navy-light);
}
.events-timeline {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    position: relative;
}
.events-timeline::before {
    content: '';
    position: absolute;
    left: 60px;
    top: 0; bottom: 0;
    width: 1px;
    background: var(--obs-border);
}
.event-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
    position: relative;
    padding-left: 0;
}
.event-date-block {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}
.event-date-block::after {
    content: '';
    position: absolute;
    right: -28px;
    top: 12px;
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--obs-purple);
    border: 2px solid var(--obs-navy-light);
}
.event-month {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--obs-purple-light);
}
.event-day {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--obs-white);
    line-height: 1.1;
}
.event-year {
    font-size: 0.7rem;
    color: var(--obs-muted);
}
.event-content {
    flex: 1;
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}
.event-content:hover {
    border-color: rgba(108, 43, 255, 0.2);
}
.event-type {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-cyan);
    margin-bottom: var(--space-xs);
}
.event-content h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-xs);
    line-height: 1.3;
}
.event-details {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--obs-muted);
}
.event-details span:not(:last-child)::after {
    content: '·';
    margin-left: var(--space-sm);
    color: var(--obs-border);
}

@media (max-width: 768px) {
    .events-timeline::before { left: 10px; }
    .event-date-block { width: 50px; }
    .event-date-block::after { right: -18px; }
    .event-item { gap: var(--space-md); }
}

/* ============================================
   PRESS
   ============================================ */
.press-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}
.press-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    transition: all var(--transition-base);
}
.press-card:hover {
    border-color: rgba(108, 43, 255, 0.2);
    transform: translateY(-2px);
}
.press-type {
    display: inline-block;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-purple-light);
    margin-bottom: var(--space-xs);
}
.press-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-xs);
}
.press-card p {
    font-size: 0.88rem;
    color: var(--obs-muted);
    line-height: 1.6;
}
.press-cta {
    text-align: center;
}
.press-note {
    margin-top: var(--space-sm);
    font-size: 0.88rem;
    color: var(--obs-muted);
}

@media (max-width: 768px) {
    .press-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 430px) {
    .press-grid { grid-template-columns: 1fr; }
}

/* ============================================
   NEWSLETTER
   ============================================ */
.section-newsletter {
    background: linear-gradient(180deg, var(--obs-navy), var(--obs-navy-light));
}
.newsletter-wrapper {
    background: var(--grad-card);
    border: 1px solid rgba(108, 43, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}
.newsletter-wrapper::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at 50% 50%, rgba(75, 16, 212, 0.08), transparent 50%);
    pointer-events: none;
}
.newsletter-headline {
    font-family: var(--font-heading);
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    font-weight: 700;
    color: var(--obs-white);
    line-height: 1.3;
    margin-bottom: var(--space-sm);
    position: relative;
}
.newsletter-text {
    font-size: 0.95rem;
    color: var(--obs-muted);
    margin-bottom: var(--space-lg);
    position: relative;
}
.newsletter-form {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    justify-content: center;
    position: relative;
}
.form-group input {
    font-family: var(--font-body);
    font-size: 0.9rem;
    padding: 0.85rem 1.25rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--obs-border);
    border-radius: var(--radius-xl);
    color: var(--obs-white);
    outline: none;
    transition: border-color var(--transition-fast);
    width: 200px;
}
.form-group input::placeholder { color: var(--obs-muted); }
.form-group input:focus {
    border-color: var(--obs-purple-light);
    background: rgba(255, 255, 255, 0.08);
}
.btn-newsletter {
    padding: 0.85rem 1.5rem;
}

@media (max-width: 430px) {
    .form-group input { width: 100%; }
    .newsletter-form { flex-direction: column; align-items: stretch; }
}

/* ============================================
   CONTACT
   ============================================ */
.contact-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    text-align: center;
}
.contact-name {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--obs-white);
    margin-bottom: var(--space-sm);
}
.contact-link {
    display: block;
    font-size: 0.95rem;
    color: var(--obs-muted);
    margin-bottom: var(--space-xs);
    transition: color var(--transition-fast);
}
.contact-link:hover { color: var(--obs-purple-light); }
.contact-buttons {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: #060920;
    border-top: 1px solid var(--obs-border);
    padding: var(--space-xl) 0 var(--space-lg);
    position: relative;
    z-index: 1;
}
.footer-main {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}
.footer-logo .logo-main {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--obs-white);
}
.footer-logo .logo-sub {
    font-size: 0.5rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--obs-muted);
    display: block;
}
.footer-tagline {
    font-size: 0.88rem;
    color: var(--obs-muted);
    max-width: 350px;
    margin-top: var(--space-sm);
    line-height: 1.6;
}
.footer-nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-md);
}
.footer-nav a {
    font-size: 0.85rem;
    color: var(--obs-muted);
    transition: color var(--transition-fast);
}
.footer-nav a:hover { color: var(--obs-white); }
.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid var(--obs-border);
    text-align: center;
    font-size: 0.8rem;
    color: var(--obs-muted);
}

@media (max-width: 768px) {
    .footer-main {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .footer-tagline { margin-left: auto; margin-right: auto; }
    .footer-nav ul { justify-content: center; }
}