/* =====================================================
   UI MOTION TOKENS
   ค่ากลางสำหรับการเคลื่อนไหวและ Skeleton Loading
   ===================================================== */
:root {
    --motion-fast: 140ms;
    --motion-normal: 220ms;
    --motion-slow: 300ms;
    --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
    --motion-ease-standard: ease;
    --skeleton-base: #e7ece9;
    --skeleton-highlight: rgba(255, 255, 255, 0.62);
}

[hidden] {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* =====================================================
   SKELETON LOADING
   รูปร่างพื้นฐานที่นำไปประกอบตาม Layout จริงของแต่ละหน้า
   ===================================================== */
.skeleton {
    position: relative;
    display: block;
    overflow: hidden;
    background: var(--skeleton-base);
    border-radius: 10px;
    color: transparent;
    pointer-events: none;
}

.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--skeleton-highlight) 50%,
        transparent 100%
    );
    animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

.skeleton-circle {
    border-radius: 50%;
}

.skeleton-text {
    width: 100%;
    height: 12px;
    border-radius: 999px;
}

.skeleton-title {
    width: 100%;
    height: 20px;
    border-radius: 999px;
}

.skeleton-image {
    width: 100%;
    min-height: 220px;
}

.skeleton-button {
    width: 100%;
    height: 40px;
    border-radius: 999px;
}

.skeleton-width-30 { width: 30%; }
.skeleton-width-40 { width: 40%; }
.skeleton-width-50 { width: 50%; }
.skeleton-width-60 { width: 60%; }
.skeleton-width-70 { width: 70%; }
.skeleton-width-80 { width: 80%; }

.notification-badge.is-loading {
    width: 16px;
    min-width: 16px;
    height: 16px;
    overflow: hidden;
    background: var(--skeleton-base);
    color: transparent;
}

.notification-badge.is-loading::after {
    content: "";
    position: absolute;
    inset: 0;
    transform: translateX(-100%);
    background: linear-gradient(
        90deg,
        transparent,
        var(--skeleton-highlight),
        transparent
    );
    animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

@keyframes skeleton-shimmer {
    to {
        transform: translateX(100%);
    }
}

/* =====================================================
   REVEAL และ PAGE ENTER
   เล่นเฉพาะ Section หลักหรือข้อมูลที่เพิ่งแสดงผล
   ===================================================== */
.ui-reveal {
    opacity: 0;
    transform: translateY(12px);
    transition:
        opacity var(--motion-normal) var(--motion-ease-standard),
        transform var(--motion-normal) var(--motion-ease);
    transition-delay: var(--reveal-delay, 0ms);
}

.ui-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.page-enter {
    animation: page-enter 260ms var(--motion-ease) both;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================================================
   INTERACTION และ DATA UPDATE
   การตอบสนองสั้น ๆ โดยไม่หน่วงการใช้งาน
   ===================================================== */
.ui-pressable {
    transition:
        transform var(--motion-fast) var(--motion-ease-standard),
        box-shadow var(--motion-fast) var(--motion-ease-standard),
        background-color var(--motion-fast) var(--motion-ease-standard),
        border-color var(--motion-fast) var(--motion-ease-standard);
}

.ui-pressable:active:not(:disabled) {
    transform: scale(0.97);
}

.ui-pressable:disabled {
    transform: none;
    cursor: not-allowed;
}

.data-updated {
    animation: data-updated var(--motion-normal) var(--motion-ease-standard);
}

@keyframes data-updated {
    50% {
        transform: scale(1.05);
    }
}

/* =====================================================
   DROPDOWN และ MODAL
   Utility สำหรับองค์ประกอบที่เปิดและปิดด้วย class .show
   ===================================================== */
.ui-dropdown-motion {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px) scale(0.98);
    transition:
        opacity var(--motion-fast) var(--motion-ease-standard),
        transform var(--motion-fast) var(--motion-ease),
        visibility var(--motion-fast) var(--motion-ease-standard);
}

.ui-dropdown-motion.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.ui-modal-motion {
    opacity: 0;
    transition: opacity var(--motion-normal) var(--motion-ease-standard);
}

.ui-modal-motion .modal-dialog {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
    transition:
        opacity var(--motion-normal) var(--motion-ease-standard),
        transform var(--motion-normal) var(--motion-ease);
}

.ui-modal-motion.show,
.ui-modal-motion.show .modal-dialog {
    opacity: 1;
}

.ui-modal-motion.show .modal-dialog {
    transform: translateY(0) scale(1);
}

/* =====================================================
   ERROR STATE
   ใช้ร่วมกันเมื่อ Backend ไม่สามารถส่งข้อมูลกลับมาได้
   ===================================================== */
.ui-error-state {
    display: grid;
    justify-items: center;
    gap: 10px;
    padding: 36px 20px;
    text-align: center;
}

.ui-error-state i {
    color: #7a3f3f;
    font-size: 28px;
}

.ui-error-state h3,
.ui-error-state p {
    margin: 0;
}

.ui-error-state p {
    color: #66736d;
    font-size: 14px;
}

/* =====================================================
   REDUCED MOTION
   เคารพการตั้งค่าลดการเคลื่อนไหวของผู้ใช้
   ===================================================== */
@media (prefers-reduced-motion: reduce) {
    .skeleton::after {
        animation: none;
    }

    .notification-badge.is-loading::after {
        animation: none;
    }

    .ui-reveal,
    .ui-dropdown-motion,
    .ui-modal-motion,
    .ui-modal-motion .modal-dialog,
    .ui-pressable {
        transition: none;
    }

    .ui-reveal {
        opacity: 1;
        transform: none;
    }

    .page-enter,
    .data-updated {
        animation: none;
    }
}