@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,400;0,500;1,400&display=swap');

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

body {
    background: #131315;
    color: #ffffff;
    font-family: 'Space Grotesk', sans-serif;
    line-height: 1.5;
    overflow: hidden;
    position: relative;
    height: 100vh;
}

/* Sophisticated background texture */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.005) 50%, transparent 100%),
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 100px,
            rgba(255, 255, 255, 0.002) 102px
        );
    pointer-events: none;
    z-index: -2;
}

/* Top Navigation */
.sidebar-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 2rem;
    background: rgba(11, 11, 11, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 2rem;
}

.nav-dot {
    width: 16px;
    height: 16px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.nav-dot:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

.nav-dot::before {
    content: '';
    position: absolute;
    top: -6px;
    left: -6px;
    width: 28px;
    height: 28px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.nav-dot:hover::before {
    border-color: rgba(255, 255, 255, 0.4);
}

/* Light theme styles */
body.light-theme {
    background: #f0f0f1;
    color: #1a1a1a;
}

body.light-theme::before {
    background:
        linear-gradient(135deg, transparent 0%, rgba(0, 0, 0, 0.005) 50%, transparent 100%),
        repeating-linear-gradient(
            45deg,
            transparent,
            transparent 100px,
            rgba(0, 0, 0, 0.002) 102px
        );
}

.sidebar-nav {
    background: rgba(19, 19, 21, 0.8);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.light-theme .sidebar-nav {
    background: rgba(240, 240, 241, 0.8);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.light-theme .nav-dot {
    background: rgba(0, 0, 0, 0.6);
}

.light-theme .nav-dot:hover {
    background: rgba(0, 0, 0, 0.8);
}

.light-theme .nav-dot::before {
    border-color: rgba(0, 0, 0, 0.2);
}

.light-theme .nav-dot:hover::before {
    border-color: rgba(0, 0, 0, 0.4);
}

.light-theme .sidebar-nav a {
    color: #1a1a1a;
    opacity: 0.6;
}

.light-theme .sidebar-nav a:hover {
    opacity: 1;
    color: #000000;
}

.light-theme .name-highlight::after {
    background: linear-gradient(90deg, #1a1a1a 0%, transparent 100%);
}

.light-theme .term-highlight {
    background: rgba(0, 0, 0, 0.04);
    border: 1px solid rgba(0, 0, 0, 0.08);
    color: #1a1a1a;
}

.light-theme .term-highlight::before {
    background: rgba(0, 0, 0, 0.4);
}

.light-theme .term-highlight::after {
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1));
}

.light-theme .description-block {
    border-left: 1px solid rgba(0, 0, 0, 0.1);
}

.light-theme .panel-glass {
    background: rgba(240, 240, 241, 0.85);
    backdrop-filter: blur(50px);
    -webkit-backdrop-filter: blur(50px);
    border: 1px solid rgba(0, 0, 0, 0.06);
}

.light-theme .panel-glass:hover {
    background: rgba(240, 240, 241, 0.9);
    border-color: rgba(0, 0, 0, 0.12);
}

.light-theme .keyword-highlight {
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid rgba(0, 0, 0, 0.05);
    color: #1a1a1a;
}

.light-theme .keyword-highlight::after {
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1));
}

.light-theme .card-number {
    color: rgba(0, 0, 0, 0.3);
}

.light-theme .name-highlight {
    color: #1a1a1a;
}

.light-theme .panel-glass h3 {
    color: #1a1a1a;
}

.light-theme .panel-glass p {
    color: rgba(26, 26, 26, 0.9);
}

.light-theme .intro-block::before {
    color: rgba(0, 0, 0, 0.08);
}

.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: row;
    gap: 2rem;
}

.sidebar-nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 300;
    font-size: 0.85rem;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    opacity: 0.6;
    transition: all 0.4s ease;
}

.sidebar-nav a:hover {
    opacity: 1;
    color: #ffffff;
    transform: translateY(-2px);
}

/* Main Container */
.main-container {
    margin-left: 0;
    min-height: 100vh;
}

/* Hero Section */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 2rem 4rem 2rem;
    position: relative;
}

.hero-grid {
    display: flex;
    justify-content: center;
    max-width: 1000px;
    width: 100%;
    align-items: center;
    margin: 0 auto;
}

/* Text Column */
.text-column {
    display: flex;
    flex-direction: column;
    gap: 6rem;
    padding-top: 2rem;
}

.intro-block {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    line-height: 1.6;
    font-weight: 400;
    position: relative;
}

.intro-block::before {
    content: '"';
    font-size: 8rem;
    font-family: 'Playfair Display', serif;
    color: rgba(255, 255, 255, 0.08);
    position: absolute;
    left: -3rem;
    top: -2rem;
    z-index: -1;
}

.description-block {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1rem, 2.2vw, 1.2rem);
    line-height: 1.8;
    font-weight: 300;
    opacity: 0.9;
    margin-left: 2rem;
    padding-left: 2rem;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}

.name-highlight {
    font-style: italic;
    font-weight: 500;
    color: #ffffff;
    position: relative;
}

.name-highlight::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, #ffffff 0%, transparent 100%);
    opacity: 0.3;
}

.term-highlight {
    background: rgba(255, 255, 255, 0.04);
    padding: 0.02rem 0.15rem;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(12px);
    font-weight: 400;
    color: #ffffff;
    position: relative;
}

.term-highlight::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -6px;
    transform: translateY(-50%);
    width: 2px;
    height: 2px;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
}

.term-highlight::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.term-highlight:hover::after {
    transform: scaleX(1);
}


/* Content Cards Section */
.content-cards {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 10;
}

/* V4 Style Cards */
.text-panel {
    position: absolute;
    transform-style: preserve-3d;
    transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    pointer-events: auto;
    width: min(450px, 40vw);
    height: auto;
}

.card-1 {
    top: 50%;
    left: 0;
    transform: translateY(-50%) translateX(-30vw) rotate(-2deg);
}

.card-2 {
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) translateY(20vh) rotate(1deg);
}

.card-3 {
    top: 50%;
    right: 0;
    transform: translateY(-50%) translateX(30vw) rotate(-1deg);
}

.panel-glass {
    background: rgba(19, 19, 21, 0.85);
    backdrop-filter: blur(50px);
    -webkit-backdrop-filter: blur(50px);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    width: 100%;
    height: auto;
}

.panel-glass:hover {
    background: rgba(19, 19, 21, 0.9);
    border-color: rgba(255, 255, 255, 0.12);
}

.card-number {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.3);
    letter-spacing: 1px;
}

.panel-glass h3 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.3rem, 3vw, 1.8rem);
    font-weight: 500;
    margin-bottom: 1rem;
    color: #ffffff;
    line-height: 1.3;
}

.panel-glass p {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    font-weight: 300;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.9);
}

.keyword-highlight {
    position: relative;
    font-weight: 400;
    color: #ffffff;
    background: rgba(255, 255, 255, 0.03);
    padding: 0.02rem 0.15rem;
    border-radius: 3px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.keyword-highlight::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.1));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.keyword-highlight:hover::after {
    transform: scaleX(1);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-container {
        margin-left: 0;
    }

    .sidebar-nav {
        position: static;
        transform: none;
        padding: 2rem;
        background: rgba(11, 11, 11, 0.95);
        backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-container {
        justify-content: center;
    }

    .sidebar-nav ul {
        flex-direction: row;
        gap: 2rem;
    }

    .sidebar-nav a {
        writing-mode: horizontal-tb;
        text-orientation: unset;
        transform: none;
    }

    .sidebar-nav a:hover {
        transform: translateY(-2px);
    }

    .hero-grid {
        justify-content: center;
    }

    .content-cards {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 2rem;
    }

    .card-1, .card-2, .card-3 {
        justify-self: center;
        max-width: 500px;
        transform: none;
    }

    .card-3 {
        grid-column: unset;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 1rem;
    }

    .intro-block::before {
        display: none;
    }

    .description-block {
        margin-left: 0;
        padding-left: 1rem;
    }

    .content-cards {
        padding: 2rem 1rem;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-dot {
        display: none;
    }

    .sidebar-nav ul {
        gap: 1rem;
    }

    .text-panel {
        width: min(350px, 80vw);
    }

    .panel-glass {
        padding: 1.5rem;
    }

    .card-1 {
        transform: translateY(-50%) translateX(-70vw) rotate(-2deg);
    }

    .card-2 {
        transform: translateX(-50%) translateY(15vh) rotate(1deg);
    }

    .card-3 {
        transform: translateY(-50%) translateX(70vw) rotate(-1deg);
    }

    .panel-glass h3 {
        font-size: 1.2rem;
    }

    .panel-glass p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .card-number {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 1rem;
    }

    .text-column {
        gap: 2rem;
    }

    .floating-panel {
        padding: 1.5rem;
    }

    .intro-block {
        font-size: 1.5rem;
    }

    .description-block {
        font-size: 1rem;
    }

    .card-1, .card-2, .card-3 {
        margin-left: 3vw;
        margin-right: 3vw;
    }

    .panel-glass {
        padding: 1.5rem;
        border-radius: 16px;
    }
}