/* Enhanced Form Loading Overlay */
.form-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    width: 100%; /* Fallback for iOS */
    height: 100vh;
    height: 100%; /* Fallback for iOS */
    min-height: 100vh;
    min-height: -webkit-fill-available; /* iOS Safari fix */
    z-index: 99999; /* Increased for iOS */
    background: linear-gradient(135deg, rgba(245, 247, 250, 0.95) 0%, rgba(235, 237, 240, 0.95) 100%);
    pointer-events: auto;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    display: none;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px); /* iOS Safari prefix */
    /* iOS Safari stacking context fix */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: opacity;
}

.form-loading-overlay.show {
    opacity: 1 !important;
    display: flex !important;
    visibility: visible !important;
    animation: fadeIn 0.3s ease-out;
    -webkit-animation: fadeIn 0.3s ease-out; /* iOS Safari prefix */
    /* Force visibility on iOS */
    position: fixed !important;
    z-index: 99999 !important;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.loading-content {
    text-align: center;
    animation: slideUp 0.4s ease-out 0.1s both;
    -webkit-animation: slideUp 0.4s ease-out 0.1s both; /* iOS Safari prefix */
    /* iOS Safari animation fix */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@-webkit-keyframes slideUp {
    from {
        -webkit-transform: translateY(20px);
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        -webkit-transform: translateY(0);
        transform: translateY(0);
        opacity: 1;
    }
}

.loading-spinner {
    width: 70px;
    height: 70px;
    border: 6px solid #e8ecef;
    border-top: 6px solid #1976d2;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    -webkit-animation: spin 0.8s linear infinite; /* iOS Safari prefix */
    margin: 0 auto 24px;
    position: relative;
    box-shadow: 0 4px 12px rgba(25, 118, 210, 0.2);
    /* iOS Safari animation fix */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
    will-change: transform;
}

/* Add inner glow effect */
.loading-spinner::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    -webkit-transform: translate(-50%, -50%); /* iOS Safari prefix */
    width: 50%;
    height: 50%;
    border: 3px solid transparent;
    border-top-color: #42a5f5;
    border-radius: 50%;
    animation: spin 1.2s linear infinite;
    -webkit-animation: spin 1.2s linear infinite; /* iOS Safari prefix */
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@-webkit-keyframes spin {
    0% { -webkit-transform: rotate(0deg); transform: rotate(0deg); }
    100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

/* Department-specific colors */

/* Emergency - Red (#dc3545) */
.form-loading-overlay.emergency .loading-spinner {
    border-top-color: #dc3545;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.2);
}

.form-loading-overlay.emergency .loading-spinner::before {
    border-top-color: #dc3545;
}

.form-loading-overlay.emergency .loading-dots span {
    background: #dc3545;
}

/* Burn - Orange (#fd7e14) */
.form-loading-overlay.burn .loading-spinner {
    border-top-color: #fd7e14;
    box-shadow: 0 4px 12px rgba(253, 126, 20, 0.2);
}

.form-loading-overlay.burn .loading-spinner::before {
    border-top-color: #fd7e14;
}

.form-loading-overlay.burn .loading-dots span {
    background: #fd7e14;
}

/* Ward - Blue (#3a8dff) */
.form-loading-overlay.ward .loading-spinner {
    border-top-color: #3a8dff;
    box-shadow: 0 4px 12px rgba(58, 141, 255, 0.2);
}

.form-loading-overlay.ward .loading-spinner::before {
    border-top-color: #3a8dff;
}

.form-loading-overlay.ward .loading-dots span {
    background: #3a8dff;
}

/* Purple - Dark Purple (#241d2b) */
.form-loading-overlay.purple .loading-spinner {
    border-top-color: #241d2b;
    box-shadow: 0 4px 12px rgba(36, 29, 43, 0.2);
}

.form-loading-overlay.purple .loading-spinner::before {
    border-top-color: #241d2b;
}

.form-loading-overlay.purple .loading-dots span {
    background: #241d2b;
}

.loading-text {
    font-size: 1.3rem;
    color: #333;
    font-weight: 600;
    text-align: center;
    animation: pulse 2s ease-in-out infinite;
    -webkit-animation: pulse 2s ease-in-out infinite; /* iOS Safari prefix */
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@-webkit-keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Department-specific text pulse colors */
.form-loading-overlay.emergency .loading-text {
    color: #dc3545 !important;
}

.form-loading-overlay.burn .loading-text {
    color: #fd7e14 !important;
}

.form-loading-overlay.ward .loading-text {
    color: #3a8dff !important;
}

.loading-dots {
    display: inline-flex;
    gap: 8px;
    margin-top: 12px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background: #1976d2;
    border-radius: 50%;
    animation: dotPulse 1.4s ease-in-out infinite;
    -webkit-animation: dotPulse 1.4s ease-in-out infinite; /* iOS Safari prefix */
}

.loading-dots span:nth-child(1) {
    animation-delay: 0s;
}

.loading-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes dotPulse {
    0%, 80%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    40% {
        transform: scale(1.2);
        opacity: 1;
    }
}

@-webkit-keyframes dotPulse {
    0%, 80%, 100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0.5;
    }
    40% {
        -webkit-transform: scale(1.2);
        transform: scale(1.2);
        opacity: 1;
    }
}

/* Success checkmark animation (optional) */
.loading-checkmark {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: none;
}

.loading-checkmark.show {
    display: block;
}

.checkmark-circle {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: #4caf50;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
    animation: popIn 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes popIn {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.checkmark-svg {
    width: 35px;
    height: 35px;
}

.checkmark-path {
    stroke: #fff;
    stroke-width: 4;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
    stroke-dasharray: 36;
    stroke-dashoffset: 36;
    animation: drawCheck 0.6s 0.3s forwards;
}

@keyframes drawCheck {
    to {
        stroke-dashoffset: 0;
    }
}

/* iOS Safari specific fixes */
@supports (-webkit-touch-callout: none) {
    .form-loading-overlay {
        /* Force hardware acceleration on iOS */
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
        /* Ensure overlay is on top */
        position: fixed !important;
        z-index: 99999 !important;
        /* iOS viewport fix */
        min-height: -webkit-fill-available !important;
        height: 100vh !important;
        height: -webkit-fill-available !important;
    }
    
    .form-loading-overlay.show {
        /* Force display on iOS - maximum priority */
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
        width: 100% !important;
        width: 100vw !important;
        height: 100% !important;
        height: 100vh !important;
        min-height: 100vh !important;
        min-height: -webkit-fill-available !important;
        z-index: 99999 !important;
        /* Force all properties */
        pointer-events: auto !important;
        -webkit-backface-visibility: visible !important;
        backface-visibility: visible !important;
    }
    
    .loading-spinner {
        /* Force hardware acceleration for spinner */
        -webkit-transform: translate3d(0, 0, 0);
        transform: translate3d(0, 0, 0);
        /* Ensure spinner is visible */
        visibility: visible !important;
        opacity: 1 !important;
    }
    
    .loading-content {
        /* Ensure content is visible */
        visibility: visible !important;
        opacity: 1 !important;
        display: block !important;
    }
}

/* Mobile responsive */
@media (max-width: 768px) {
    .loading-spinner {
        width: 60px;
        height: 60px;
        border-width: 5px;
    }
    
    .loading-text {
        font-size: 1.1rem;
    }
}

@media (max-width: 576px) {
    .loading-spinner {
        width: 55px;
        height: 55px;
        border-width: 4px;
    }
    
    .loading-text {
        font-size: 1rem;
    }
    
    .loading-dots span {
        width: 6px;
        height: 6px;
    }
}