/* ==========================================================================
   Liberum — Minimalist Industrial Design System
   Eye-friendly matte dark palette, zero fluorescent/neon colors, zero glow fatigue
   ========================================================================== */

:root {
    --bg-primary: #0b0c0e;
    --bg-surface: #121418;
    --bg-elevated: #171a20;
    --border-subtle: #22262f;
    --border-hover: #323846;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --liberum-red: #c81e1e;
    --liberum-red-hover: #a81818;
    --liberum-red-muted: rgba(200, 30, 30, 0.12);
    --status-valid: #2e7d32;
    --status-error: #c81e1e;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
    font-feature-settings: "cv02", "cv03", "cv04", "cv11";
}

/* 3D Globe Container — Centered symmetrically with the max-w-7xl layout */
#globeViz,
#globeViz * {
    pointer-events: none !important;
    user-select: none;
}

#globeViz {
    position: absolute;
    top: 0;
    right: max(0px, calc((100% - 80rem) / 2 - 5rem));
    width: min(60%, 54rem);
    height: 100vh;
    z-index: 0;
}

@media (max-width: 1024px) {
    #globeViz {
        right: 0;
        width: 100%;
        opacity: 0.4;
    }
}

/* Matte Surface Panels (Replaces flashy glassmorphism) */
.matte-panel {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    transition: border-color 0.2s ease, background-color 0.2s ease;
}

.matte-panel-interactive:hover {
    border-color: var(--border-hover);
    background-color: var(--bg-elevated);
}

/* Subtle technical grid background */
.tech-grid-bg {
    background-image: 
        linear-gradient(to right, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 32px 32px;
}

/* ==========================================================================
   Minimalist Monochrome + Crimson Circuit Lines (Bottom -> Up)
   ========================================================================== */
.circuit-line {
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    vector-effect: non-scaling-stroke;
}

.circuit-base {
    stroke: #252934;
    stroke-width: 1.5;
}

.circuit-pulse {
    stroke: #8b949e;
    stroke-width: 1.5;
    stroke-dasharray: 16 184;
    animation: flow-up 3.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

.circuit-pulse-red {
    stroke: var(--liberum-red);
    stroke-width: 1.75;
    stroke-dasharray: 18 182;
    animation: flow-up 3.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes flow-up {
    0% {
        stroke-dashoffset: 200;
        opacity: 0;
    }
    20% {
        opacity: 0.85;
    }
    80% {
        opacity: 0.85;
    }
    100% {
        stroke-dashoffset: 0;
        opacity: 0;
    }
}

/* Protocol logos in full original color */
.protocol-logo {
    opacity: 0.95;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.group\/protocol:hover .protocol-logo {
    opacity: 1;
    transform: scale(1.02);
}

/* ==========================================================================
   Native <dialog> Modal & Modern Form Validation (:user-invalid / :user-valid)
   ========================================================================== */
dialog#downloadModal {
    background: transparent;
    border: none;
    padding: 0;
    max-width: 34rem;
    width: calc(100% - 2rem);
    color: var(--text-primary);
    margin: auto;
}

dialog#downloadModal::backdrop {
    background: rgba(7, 8, 10, 0.82);
    backdrop-filter: blur(4px);
}

dialog#downloadModal[open] {
    animation: modal-fade-in 0.18s ease-out;
}

@keyframes modal-fade-in {
    from {
        opacity: 0;
        transform: translateY(6px) scale(0.99);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Form Controls */
.form-input {
    width: 100%;
    background-color: #0e1014;
    border: 1px solid var(--border-subtle);
    border-radius: 0.375rem;
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: border-color 0.15s ease;
    outline: none;
}

.form-input:focus {
    border-color: #525b6d;
}

.form-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.field-error-msg {
    display: none;
    font-size: 0.75rem;
    color: #e05252;
    margin-top: 0.35rem;
}

/* Only show validation error state after user interaction (:user-invalid) */
.form-input:user-invalid,
.form-input.user-invalid-fallback {
    border-color: var(--status-error);
    background-color: rgba(200, 30, 30, 0.05);
}

.form-input:user-invalid + .field-error-msg,
.form-input.user-invalid-fallback + .field-error-msg {
    display: block;
}

.form-input:user-valid,
.form-input.user-valid-fallback {
    border-color: #2f4f3e;
}