:root {
    /* -------------------------------------------------------
       COLOR SYSTEM — RED + BLACK (SUBTLY AGGRESSIVE)
       ------------------------------------------------------- */
    /* Backgrounds Do not use directly */
    --bg-0: #0b0b10; /* near-black page background */
    --bg-1: #15151c; /* dark surface */
    --bg-2: #1e1e25; /* elevated surface */
    --bg-3: #2a2a33; /* hover surface */
    /* Text  Do not use directly */
    --text-0: #f5f5f5; /* primary text */
    --text-1: #d7d7d7; /* secondary text */
    --text-2: #9e9e9e; /* muted text */
    /* Reds (primary accent) */
    --highlight-0: #e53935; /* primary red */
    --highlight-1: #ff5252; /* bright accent red */
    --highlight-2: #1c1c1c; /* deep red shadow */
    /* Borders */
    --border-0: #262633;
    --border-1: #3a3a45;
    /* Semantic Colors */
    /* -------------------------------------------------------
       TYPOGRAPHY
       ------------------------------------------------------- */

    --font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 600;
    /* -------------------------------------------------------
       SPACING SCALE
       ------------------------------------------------------- */

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    /* -------------------------------------------------------
       RADIUS + SHADOWS
       ------------------------------------------------------- */

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --shadow-0: 0 2px 6px rgba(0, 0, 0, 0.35);
    --shadow-1: 0 4px 12px rgba(0, 0, 0, 0.45);
    --shadow-2: 0 6px 18px rgba(0, 0, 0, 0.55);
    /* -------------------------------------------------------
       TRANSITIONS
       ------------------------------------------------------- */

    --transition-fast: 0.15s ease;
    --transition: 0.25s ease;
}


/* ALL OUR NEW INTERACTIVE STUFF ---------------------------------------------------- */

.interactive {
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

    .interactive:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-1);
    }

    .interactive:active {
        transform: translateY(0px) scale(0.97);
        box-shadow: var(--shadow-2);
    }

.floating {
    animation: floaty 6s ease-in-out infinite;
}

@keyframes floaty {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-6px);
    }

    100% {
        transform: translateY(0px);
    }
}

.neon-focus:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--bg-1), 0 0 12px var(--highlight-1), 0 0 24px var(--highlight-2);
    transition: box-shadow var(--transition-fast);
}

.btn-ripple {
    position: relative;
    overflow: hidden;
}

    .btn-ripple::after {
        content: "";
        position: absolute;
        width: 10px;
        height: 10px;
        background: var(--highlight-1);
        border-radius: 50%;
        opacity: 0;
        transform: scale(1);
        transition: transform 0.6s, opacity 0.6s;
    }

    .btn-ripple:active::after {
        opacity: 0.4;
        transform: scale(18);
        transition: 0s;
    }

.underline-animate {
    position: relative;
    display: inline-block;
}

    .underline-animate::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: -2px;
        width: 0%;
        height: 2px;
        background: var(--highlight-1);
        transition: width var(--transition-fast);
    }

    .underline-animate:hover::after {
        width: 100%;
    }

.gradient-border {
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    background: linear-gradient(var(--bg-2), var(--bg-2)) padding-box, linear-gradient(135deg, var(--highlight-0), var(--highlight-2)) border-box;
}

.glow-pulse {
    animation: pastel-ping 2.5s infinite ease-in-out;
}

@keyframes pastel-ping {
    0% {
        box-shadow: 0 0 0px rgba(255, 233, 125, 0.0);
    }

    50% {
        box-shadow: 0 0 18px rgba(255, 233, 125, 0.35);
    }

    100% {
        box-shadow: 0 0 0px rgba(255, 233, 125, 0.0);
    }
}

/* ALL OUR NEW INTERACTIVE STUFF ---------------------------------------------------- */
/* Base page styling */
body {
    background: var(--bg-0);
    color: var(--text-0);
    font-family: var(--font-family);
}

/* Slide-up animation */
.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--transition), transform var(--transition);
}

    .slide-up.visible {
        opacity: 1;
        transform: translateY(0);
    }

/* Hero */
.hero {
    padding: var(--space-6) var(--space-4);
    text-align: center;
    background: var(--bg-0);
}

    .hero .subtitle {
        font-size: var(--font-size-lg);
        color: var(--text-1);
    }

    .hero .lead {
        max-width: 700px;
        margin: var(--space-4) auto 0;
        font-size: var(--font-size-md);
        color: var(--text-1);
    }

/* Cards */
.card-grid {
    display: grid;
    gap: var(--space-5);
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    margin-top: var(--space-5);
}

.card {
    background: var(--bg-1);
    padding: var(--space-5);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    border: 1px solid var(--border-0);
    transition: transform var(--transition-fast), background var(--transition-fast);
}

    .card:hover {
        transform: translateY(-4px);
        background: var(--bg-2);
    }
.card-link {
    display: block;
    color: var(--text-0);
    text-decoration: none;
}

    .card-link:hover {
        text-decoration: none;
    }

/* Split sections */
.split-section {
    display: flex;
    gap: var(--space-6);
    align-items: center;
    padding: var(--space-6) var(--space-4);
}

    .split-section.reverse {
        flex-direction: row-reverse;
    }

.split-text {
    flex: 1;
}

    .split-text ul {
        margin-top: var(--space-4);
        color: var(--text-1);
    }

.split-visual {
    flex: 1;
    min-height: 260px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-2);
    background: var(--bg-2);
    border: 1px solid var(--border-1);
}

/* Placeholder visuals */
.db-visual {
    background: linear-gradient(135deg, var(--highlight-0), var(--highlight-1));
}

.dotnet-visual {
    background: linear-gradient(135deg, #6a00ff, #b300ff);
}

.server-visual {
    background: linear-gradient(135deg, #009688, #00bfa5);
}

/* Timeline */
.timeline {
    border-left: 3px solid var(--highlight-0);
    margin-left: var(--space-4);
    padding-left: var(--space-5);
}

.timeline-item {
    margin-bottom: var(--space-5);
}

    .timeline-item h3 {
        margin: 0;
    }

/* CTA */
.cta {
    text-align: center;
    padding: var(--space-6) var(--space-4);
    background: var(--bg-1);
    border-top: 1px solid var(--border-1);
}

.primary-cta {
    background: var(--highlight-0);
    color: var(--text-0);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-md);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

    .primary-cta:hover {
        background: var(--highlight-1);
        transform: translateY(-2px);
    }