/* Custom styles for Image Compressor */

/* ===== Global Styles ===== */


/* ===== Preview Area Styles ===== */
.preview-area {
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #dee2e6;
    border-radius: 0.5rem;
    padding: 1rem;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.preview-area:hover {
    border-color: #adb5bd;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Responsive preview area heights */
@media (min-width: 768px) {
    .preview-area {
        min-height: 300px;
    }
}

@media (min-width: 992px) {
    .preview-area {
        min-height: 350px;
    }
}

.preview-area img {
    max-width: 100%;
    max-height: 300px;
    object-fit: contain;
    border-radius: 0.375rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.preview-area img:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

@media (min-width: 768px) {
    .preview-area img {
        max-height: 350px;
    }
}

@media (min-width: 992px) {
    .preview-area img {
        max-height: 400px;
    }
}

.preview-area p {
    margin: 0;
    color: #6c757d;
    font-size: 1.1rem;
    font-weight: 500;
}

/* ===== Button Styles ===== */
.btn {
    transition: all 0.3s ease;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.btn:active:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.5);
}

/* ===== Form Control Styles ===== */
.form-control {
    transition: all 0.3s ease;
    border: 2px solid #dee2e6;
    border-radius: 0.5rem;
}

.form-control:hover:not(:disabled) {
    border-color: #86b7fe;
    box-shadow: 0 2px 8px rgba(13, 110, 253, 0.15);
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
    transform: translateY(-1px);
}

/* ===== Range Slider Styles ===== */
.form-range {
    transition: all 0.3s ease;
}

.form-range:not(:disabled) {
    cursor: pointer;
}

.form-range:hover:not(:disabled) {
    opacity: 0.9;
}

.form-range::-webkit-slider-thumb {
    transition: all 0.3s ease;
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 8px rgba(13, 110, 253, 0.1);
}

.form-range::-moz-range-thumb {
    transition: all 0.3s ease;
}

.form-range::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 0 8px rgba(13, 110, 253, 0.1);
}

/* ===== Card Styles ===== */
.card {
    transition: all 0.3s ease;
    border: none;
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

.card-header {
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    padding: 0.75rem 1rem;
    border-radius: 1rem 1rem 0 0 !important;
    font-weight: 600;
}

@media (min-width: 768px) {
    .card-header {
        padding: 1rem 1.5rem;
    }
}

.card-body {
    border-radius: 0 0 1rem 1rem;
}

/* ===== Badge Styles ===== */
.badge {
    font-weight: 600;
    letter-spacing: 0.5px;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.badge.bg-secondary {
    background: linear-gradient(135deg, #6c757d 0%, #495057 100%) !important;
}

.badge.bg-info {
    background: linear-gradient(135deg, #0dcaf0 0%, #0891b2 100%) !important;
}

/* ===== Loading Indicator ===== */
.loading {
    position: relative;
}

.loading::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(2px);
    z-index: 10;
    border-radius: 0.5rem;
}

.loading::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin: -25px 0 0 -25px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #667eea;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    z-index: 11;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
}

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

/* ===== Alert Styles ===== */
.alert {
    border-radius: 0.5rem;
    border: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    animation: slideIn 0.3s ease;
}

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

/* ===== Smooth Transitions for UI Updates ===== */
.preview-area,
.badge,
.btn,
.card,
.form-control,
.form-range,
#qualityValue,
#originalSize,
#compressedSize,
#reductionPercent {
    transition: all 0.3s ease;
}

/* Fade in animation for images */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.preview-area img {
    animation: fadeIn 0.4s ease;
}

/* ===== Focus Styles for Accessibility ===== */
*:focus-visible {
    outline: 3px solid rgba(13, 110, 253, 0.5);
    outline-offset: 2px;
    border-radius: 0.25rem;
}

/* ===== Utility Classes ===== */
.shadow-sm {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08) !important;
}

/* ===== Responsive Adjustments ===== */
@media (max-width: 767px) {
    h1 {
        font-size: 1.75rem;
    }
    
    .card-body {
        padding: 1rem !important;
    }
    
    .badge {
        font-size: 0.875rem !important;
        padding: 0.4rem 0.8rem;
    }
}