/* ========================================================================
   ระบบทะเบียนนักศึกษา - Main Stylesheet
   ======================================================================== */

body {
    font-family: 'Sarabun', sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    background-attachment: fixed;
    overflow-x: hidden;
    position: relative;
}

/* Subtle Pattern Overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(90deg, rgba(255,255,255,0.03) 0px, transparent 1px, transparent 40px, rgba(255,255,255,0.03) 41px),
        repeating-linear-gradient(0deg, rgba(255,255,255,0.03) 0px, transparent 1px, transparent 40px, rgba(255,255,255,0.03) 41px);
    pointer-events: none;
    z-index: 0;
}

/* Ensure content stays above pattern */
#wrapper {
    position: relative;
    z-index: 1;
}

/* ==================================================
   Select2
   ================================================== */
.select2-container--bootstrap-5 .select2-selection {
    font-family: 'Sarabun', sans-serif;
}

/* ==================================================
   Animations
   ================================================== */
.anim-shake {
    animation: shake 0.2s ease-in-out 0s 2;
}

@keyframes shake {
    0%   { margin-left: 0; }
    25%  { margin-left: 5px; }
    75%  { margin-left: -5px; }
    100% { margin-left: 0; }
}

/* ==================================================
   Rotate Hint Card (Portrait - ไม่บังคับหมุนจอ)
   สำหรับหน้าบัตรนักศึกษาเท่านั้น
   ================================================== */
.rotate-hint-card {
    display: none;
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    border: 2px solid #ffc107;
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    color: #856404;
    font-size: 0.9rem;
    font-weight: 600;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 4px 10px rgba(255, 193, 7, 0.2);
}

.rotate-hint-card i {
    color: #ffc107;
    font-size: 1.2rem;
}

/* Portrait: แสดงคำแนะนำ (ไม่ซ่อนบัตร) */
@media (orientation: portrait) and (max-width: 768px) {
    .rotate-hint-card {
        display: flex !important;
    }
}

/* Landscape หรือ Desktop: ซ่อนคำแนะนำ */
@media (orientation: landscape), (min-width: 769px) {
    .rotate-hint-card {
        display: none !important;
    }
}