/* =========================================================
   NOESOR UI POLISH - COMMIT 3
   Accesibilidad, estados de carga, microinteracciones y
   consistencia responsive para Visitante y Free.
   ========================================================= */

:root {
    --focus-ring: 0 0 0 3px rgba(96, 165, 250, .32);
    --surface-highlight: rgba(255, 255, 255, .045);
    --motion-enter: 520ms cubic-bezier(.22, 1, .36, 1);
}

/* Accesibilidad y navegación por teclado */
:where(a, button, input, textarea, select, summary):focus-visible {
    outline: 2px solid var(--primary-light);
    outline-offset: 3px;
    box-shadow: var(--focus-ring);
}

:where(input, textarea, select):focus {
    border-color: var(--border-strong);
}

button:disabled,
.button:disabled,
.button[aria-disabled="true"] {
    opacity: .52;
    filter: saturate(.65);
}

/* Entrada visual consistente */
.projects-page,
.history-page,
.analysis-page {
    animation: noesor-page-enter var(--motion-enter) both;
}

/*
 * Analizar contiene overlays position:fixed (registro/refinamiento).
 * Mantener transform con animation-fill-mode:both convierte .analyze-page
 * en containing block y puede dejar el modal fuera del viewport cuando el
 * usuario está desplazado hacia la parte inferior del análisis.
 */
.analyze-page {
    animation: noesor-analyze-page-enter var(--motion-enter);
}

@keyframes noesor-page-enter {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes noesor-analyze-page-enter {
    from { opacity: 0; }
    to { opacity: 1; }
}

#refinamiento-inteligente {
    scroll-margin-top: 110px;
}

/* Microinteracciones comunes */
.project-card,
.history-card,
.project-stat-card,
.history-summary article,
.free-plan-dashboard,
.workspace-banner,
.projects-toolbar,
.history-toolbar {
    will-change: transform;
}

.project-card,
.history-card {
    isolation: isolate;
}

.project-card::after,
.history-card::after {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0;
    background: radial-gradient(circle at 80% 0, rgba(96, 165, 250, .11), transparent 38%);
    transition: opacity var(--transition);
}

.project-card:hover::after,
.history-card:hover::after,
.project-card:focus-within::after,
.history-card:focus-within::after {
    opacity: 1;
}

.project-card:focus-within,
.history-card:focus-within {
    border-color: var(--border-hover);
}

.project-actions summary,
.project-modal-close,
.project-card-links a,
.history-card-footer a {
    transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.project-card-links a:hover,
.history-card-footer a:hover {
    color: var(--cyan-light);
}

.project-modal-backdrop {
    animation: noesor-backdrop-in 180ms ease-out both;
}

.project-modal {
    animation: noesor-modal-in 260ms cubic-bezier(.22, 1, .36, 1) both;
}

@keyframes noesor-backdrop-in { from { opacity: 0; } }
@keyframes noesor-modal-in {
    from { opacity: 0; transform: translateY(14px) scale(.985); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* Skeletons compartidos */
.noesor-loading-state {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: 22px;
    background: var(--gradient-surface);
    box-shadow: var(--shadow-small);
}

.noesor-loading-heading {
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 13px;
}

.noesor-loading-heading > div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.noesor-loading-heading strong { color: var(--text); }
.noesor-loading-heading span:last-child { color: var(--text-muted); font-size: .82rem; }

.noesor-spinner {
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    border: 3px solid rgba(255, 255, 255, .09);
    border-top-color: var(--primary-light);
    border-radius: 50%;
    animation: noesor-spin .8s linear infinite;
}

@keyframes noesor-spin { to { transform: rotate(360deg); } }

.noesor-skeleton-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.noesor-skeleton-card {
    min-height: 230px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 13px;
    overflow: hidden;
    border: 1px solid var(--border-soft);
    border-radius: 19px;
    background: rgba(8, 20, 37, .68);
}

.noesor-skeleton {
    position: relative;
    display: block;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(148, 163, 184, .105);
}

.noesor-skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-110%);
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .08), transparent);
    animation: noesor-shimmer 1.35s ease-in-out infinite;
}

@keyframes noesor-shimmer { to { transform: translateX(110%); } }

.noesor-skeleton-badge { width: 72px; height: 23px; }
.noesor-skeleton-icon { width: 48px; height: 42px; margin-top: 6px; border-radius: 12px; }
.noesor-skeleton-title { width: 68%; height: 18px; margin-top: 5px; }
.noesor-skeleton-line { width: 100%; height: 10px; }
.noesor-skeleton-line.short { width: 62%; }
.noesor-skeleton-progress { width: 100%; height: 7px; margin-top: auto; }

/* Estados vacíos y mensajes */
.projects-empty-state,
.history-empty-state {
    position: relative;
    overflow: hidden;
}

.projects-empty-state::before,
.history-empty-state::before {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    left: 50%;
    top: -145px;
    transform: translateX(-50%);
    border-radius: 50%;
    background: rgba(37, 99, 235, .09);
    filter: blur(2px);
    pointer-events: none;
}

.projects-message,
.project-dialog-error {
    animation: noesor-message-in 260ms ease-out both;
}

@keyframes noesor-message-in {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Controles táctiles y responsive */
@media (max-width: 1000px) {
    .noesor-skeleton-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 760px) {
    .noesor-loading-state { padding: 18px; }
    .noesor-skeleton-grid { grid-template-columns: 1fr; }
    .noesor-skeleton-card:nth-child(n+3) { display: none; }

    .projects-hero-actions,
    .history-hero-actions {
        width: 100%;
    }

    .projects-hero-actions .button,
    .history-hero-actions .button {
        min-height: 46px;
        justify-content: center;
    }

    .projects-search,
    .history-search,
    .projects-sort select,
    .history-sort select {
        min-height: 48px;
    }
}

@media (max-width: 520px) {
    .projects-page,
    .history-page {
        padding-bottom: 64px;
    }

    .projects-hero-meta,
    .history-hero-meta {
        gap: 7px;
    }

    .projects-hero-meta span,
    .history-hero-meta span {
        padding: 7px 9px;
    }

    .project-card,
    .history-card {
        padding: 18px;
        border-radius: 18px;
    }
}

/* Respeta preferencias del sistema */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }

    .project-card:hover,
    .history-card:hover,
    .project-stat-card:hover,
    .history-summary article:hover {
        transform: none;
    }
}