/*
 * ============================================================================
 * Copyright (c) 2026 ATH SOLUTIONS (PTY) LTD. All rights reserved.
 * KwaZulu-Natal, Republic of South Africa.
 * ============================================================================
 *
 * @BEGIN Developer Log Header Block
 * @FILENAME: loading.css
 * @TITLE: PATHWRITE
 * @DESCRIPTION: Loading skeleton and spinner components.
 * @AUTHOR: Ary van der Pijl
 * @COMPANY: ATH SOLUTIONS (PTY) LTD
 * @WEBSITE: https://www.ath.solutions/
 * @EMAIL: info@ath.solutions
 * @COPYRIGHT: All Rights Reserved
 * @LICENSE: ATH SOLUTIONS - PROPRIETARY SOFTWARE LICENCE AGREEMENT (https://www.ath.solutions/documents/ath_solutions_software_licence_agreement.pdf)
 *
 * BEGIN CHANGELOG
 * @IMPORTANT NOTICE: Developers working on these files MUST update and maintain the Developers Change Log, failure to do is not an option:
 * !==================================================================================================================================================================
 * VERSION 1.0.1
 * - File Modified | Ary van der Pijl | 2026-09-03 | Gap Analysis v4.0 §4.0: added .spinner-border-lg (3rem, was inline style="width:3rem;height:3rem") - a size override for Bootstrap's .spinner-border, distinct from this file's own custom .spinner-sm implementation above. Found while fixing wizard/step5-preview.php's hard-constraint violations. |
 * VERSION 1.0.0
 * + File Created | Ary van der Pijl | 2026-08-06 | Extracted from main.css as part of the Phase 17 CSS architecture split (9-file hierarchy per STD-E). |
 * ==================================================================================================================================================================!
 * END CHANGELOG
 */

/* ─── Loading ────────────────────────────────────────────────────────────── */

.skeleton {
  background: linear-gradient(90deg, var(--color-border) 25%, var(--color-surface-2) 50%, var(--color-border) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-shimmer {
  to {
    background-position: -200% 0;
  }
}

.spinner-sm {
  width: 16px;
  height: 16px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}

/* Size override for Bootstrap's own .spinner-border (different implementation than .spinner-sm
   above) - replaces a repeated inline style="width:3rem;height:3rem" on large centred loading
   spinners. */
.spinner-border-lg {
  width: 3rem;
  height: 3rem;
}

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

/* General-purpose rotation class using the keyframes above - step-survey.php's loading icon
   (class="material-icons-round spin") referenced this class name but it was never actually
   defined anywhere, so the icon never rotated. Real, separate bug found while fixing that file's
   inline style="..." violations (Gap Analysis v4.0 §4.0). */
.spin {
  animation: spin .8s linear infinite;
}