@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;500;700&display=swap');

:root {
    --bg-color: #1a1a1a; 
    --card-bg: rgba(40, 40, 40, 0.6); 
    --text-color: #e0e0e0;
    --text-muted: #a0a0a0;
    --primary-color: #00FFF0; 
    --primary-hover: #00dcd0;
    --primary-active: #00b8a8;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --neumorphic-shadow-light: rgba(60, 60, 60, 0.5);
    --neumorphic-shadow-dark: rgba(10, 10, 10, 0.6);
    --success-color: #4CAF50;
    --error-color: #F44336;
    --font-family: 'Poppins', sans-serif;
    --border-radius: 12px;
    --card-padding: 20px;
    --transition-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 20px auto;
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.main-header {
    text-align: center;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.main-header h1 {
    font-size: 2.5rem;
    margin-bottom: 5px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-header p {
    font-size: 1.1rem;
    color: var(--text-muted);
}

.card {
    border-radius: var(--border-radius);
    padding: var(--card-padding);
    transition: all var(--transition-speed) ease;
    border: 1px solid var(--border-color);
}

.glassmorphic {
    background: var(--card-bg);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%); 
    box-shadow: 0 8px 32px 0 var(--shadow-color);
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.neumorphic-inset {
    background: var(--bg-color);
    box-shadow: inset 5px 5px 10px var(--neumorphic-shadow-dark),
                inset -5px -5px 10px var(--neumorphic-shadow-light);
    border: none; 
}

#upload-area {
    text-align: center;
}

#drop-zone {
    border: 3px dashed var(--primary-color);
    border-radius: var(--border-radius);
    padding: 40px 20px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    position: relative; 
    background-color: rgba(0, 255, 240, 0.05); 
}

#drop-zone:hover,
#drop-zone.drag-over {
    border-style: solid;
    background-color: rgba(0, 255, 240, 0.15);
    transform: scale(1.02); 
    box-shadow: 0 0 20px rgba(0, 255, 240, 0.3);
}

.drop-zone-prompt .icon {
    width: 60px;
    height: 60px;
    color: var(--primary-color);
    margin-bottom: 15px;
    opacity: 0.8;
    transition: all var(--transition-speed) ease;
}

#drop-zone:hover .icon {
    opacity: 1;
    transform: scale(1.1);
}

.drop-zone-prompt p {
    margin: 10px 0;
    color: var(--text-muted);
}

.drop-zone-prompt strong {
    color: var(--text-color);
}

.drop-zone-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    font-weight: bold;
    border-radius: var(--border-radius);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility var(--transition-speed) ease;
    z-index: 10;
}

#drop-zone.uploading .drop-zone-prompt {
    opacity: 0.3;
}
#drop-zone.uploading .drop-zone-overlay {
    opacity: 1;
    visibility: visible;
}

#controls-area {
    padding: 30px;
    
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out, display 0s linear 0.5s; 
    display: none; 
}

#controls-area.visible {
    display: block; 
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out; 
}

#controls-area h2 {
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
    font-weight: 500;
}

.control-group {
    margin-bottom: 20px;
    display: flex;
    flex-wrap: wrap; 
    align-items: center;
    gap: 10px;
}

.control-group label {
    flex-basis: 150px; 
    flex-shrink: 0;
    font-weight: 500;
    color: var(--text-muted);
}

.control-group select,
.control-group input[type="number"],
.control-group input[type="text"] {
    flex-grow: 1;
    padding: 10px 15px;
    
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color); 
    font-family: var(--font-family);
    min-width: 80px; 
    appearance: none; 
    -webkit-appearance: none; 
    -moz-appearance: none; 
    
    background-image: url('data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%2300FFF0%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E');
    background-repeat: no-repeat;
    background-position: right 15px center;
    background-size: 10px 10px;
    padding-right: 40px; 
}

.control-group input[type="number"] {
    width: 100px; 
    flex-grow: 0; 
    
    appearance: textfield; 
    -moz-appearance: textfield; 
    background-image: none; 
    padding-right: 15px; 
}

.control-group input[type="number"]::-webkit-outer-spin-button,
.control-group input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.control-group select:focus,
.control-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 8px rgba(0, 255, 240, 0.3);
}

.control-group small {
    flex-basis: 100%;
    margin-top: 5px;
    color: var(--text-muted);
    font-size: 0.85em;
}

#quality-control {
    align-items: center;
}
#quality-slider {
    flex-grow: 1;
    cursor: pointer;
    appearance: none; 
    -webkit-appearance: none;
    height: 8px;
    background: linear-gradient(to right, var(--primary-hover), var(--primary-color));
    border-radius: 5px;
    outline: none;
    margin: 0 10px; 
}
#quality-slider::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 5px rgba(0, 255, 240, 0.5);
    transition: background var(--transition-speed) ease;
}
#quality-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    box-shadow: 0 0 5px rgba(0, 255, 240, 0.5);
     transition: background var(--transition-speed) ease;
}
#quality-slider:hover::-webkit-slider-thumb { background: var(--primary-hover); }
#quality-slider:hover::-moz-range-thumb { background: var(--primary-hover); }

#quality-value {
    min-width: 40px; 
    text-align: right;
    color: var(--primary-color);
    font-weight: bold;
}

#resize-inputs {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-grow: 1; 
}
#resize-inputs input { width: 120px; flex-grow: 0; } 
#resize-inputs #resize-unit-label { color: var(--text-muted); min-width: 25px;}

.button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: 500;
    font-size: 1rem;
    transition: all var(--transition-speed) ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-align: center;
}
.button .icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0; 
}

.button.primary {
    background-color: var(--primary-color);
    color: var(--bg-color);
    box-shadow: 0 4px 15px rgba(0, 255, 240, 0.2);
}
.button.primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 240, 0.3);
}
.button.primary:active {
    background-color: var(--primary-active);
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(0, 255, 240, 0.2);
}

.button.secondary {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}
.button.secondary:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}
.button.secondary:active {
    background-color: rgba(255, 255, 255, 0.15);
}

.button.large {
    padding: 15px 30px;
    font-size: 1.1rem;
    width: 100%; 
    margin-top: 20px; 
}
.button.large .icon {
    width: 20px;
    height: 20px;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
    background-color: var(--text-muted) !important; 
    color: var(--bg-color) !important;
    border-color: transparent !important;
}
button.primary:disabled:hover {
    background-color: var(--text-muted) !important; 
}

#image-previews {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 10px; 
}

.image-card {
    display: flex;
    flex-direction: column;
    overflow: hidden; 
    position: relative; 
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-color);
    gap: 10px; 
}

.filename {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    
    flex-grow: 1; 
}

.remove-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 5px; 
    border-radius: 50%;
    transition: all var(--transition-speed) ease;
    flex-shrink: 0; 
}
.remove-btn .icon { width: 20px; height: 20px; }
.remove-btn:hover {
    color: var(--error-color);
    background-color: rgba(244, 67, 54, 0.1);
    transform: scale(1.1);
}

.card-body {
    display: flex;
    gap: 15px;
    flex-grow: 1; 
}

.thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    flex-shrink: 0; 
}

.image-info p {
    font-size: 0.9rem;
    margin-bottom: 5px;
    color: var(--text-muted);
    word-break: break-word; 
}
.image-info p strong {
    color: var(--text-color);
    min-width: 85px; 
    display: inline-block;
    margin-right: 5px;
}
.image-info .output-info { color: var(--primary-color); }
.image-info .output-details { font-weight: bold; }

.card-actions {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end; 
    gap: 10px;
}

.progress-bar-container {
    width: 100%;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    overflow: hidden;
    height: 10px; 
    margin-top: 15px;
    position: relative; 
}
#global-progress { 
    height: 15px;
    border-radius: 8px;
    margin-top: 20px; 
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--primary-hover), var(--primary-color));
    background-size: 200% 100%; 
    border-radius: 5px;
    transition: width 0.5s ease-out;
    animation: progress-animation 2s linear infinite;
}

@keyframes progress-animation {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-color); 
    font-size: 0.8em;
    font-weight: bold;
    white-space: nowrap;
    opacity: 0; 
    transition: opacity 0.3s ease;
    width: 90%; 
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
}
#global-progress .progress-text { opacity: 1; } 

#notifications {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 300px; 
    max-width: calc(100% - 40px); 
}

.notification {
    padding: 15px;
    border-radius: var(--border-radius);
    color: var(--bg-color); 
    font-weight: 500;
    box-shadow: 0 4px 15px var(--shadow-color);
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.27, 1.55); 
    border-left: 5px solid;
    position: relative; 
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    word-wrap: break-word; 
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

.notification.success {
    background-color: rgba(76, 175, 80, 0.9); 
    border-left-color: #388E3C;
}

.notification.error {
    background-color: rgba(244, 67, 54, 0.9); 
    border-left-color: #D32F2F;
}

.notification.info {
    background-color: rgba(0, 255, 240, 0.9); 
    border-left-color: var(--primary-active);
}

@media (max-width: 768px) {
    body { padding: 10px; }
    .container { gap: 20px; }
    .main-header h1 { font-size: 2rem; }
    .main-header p { font-size: 1rem; }

    #drop-zone { padding: 30px 15px; }
    .drop-zone-prompt .icon { width: 50px; height: 50px; }

    #controls-area { padding: 20px; }
    .control-group { flex-direction: column; align-items: stretch; gap: 8px; } 
    .control-group label { flex-basis: auto; margin-bottom: 5px; text-align: left; }
    .control-group select,
    .control-group input[type="number"],
    .control-group input[type="text"] {
        width: 100%; 
        flex-grow: unset; 
    }
    
     .control-group input[type="number"] {
        width: 100%; 
    }

    #resize-inputs { width: 100%; justify-content: space-between; } 
    #resize-inputs input { width: calc(50% - 25px); } 
    #resize-inputs #resize-height { display: inline-block !important; } 

    #quality-control { flex-direction: row; align-items: center; } 
    #quality-control label { margin-bottom: 0; }
    #quality-slider { flex-grow: 1; }

    #image-previews {
        grid-template-columns: 1fr; 
        gap: 15px;
    }
    .card-body { flex-direction: column; } 
    .thumbnail { width: 100%; height: 150px; margin-bottom: 10px; } 

    #notifications { width: calc(100% - 20px); right: 10px; top: 10px; }
}

@media (max-width: 480px) {
    .main-header h1 { font-size: 1.8rem; }
    .button { font-size: 0.9rem; padding: 8px 15px; }
    .button.large { padding: 12px 25px; }
    #resize-inputs input { width: calc(50% - 20px); }
    .image-info p strong { min-width: 75px; }
}

.spin { animation: spin 1s linear infinite; }
@keyframes spin { 100% { transform: rotate(360deg); } }

.removing {
    transition: opacity 0.3s ease, transform 0.3s ease !important;
    opacity: 0;
    transform: scale(0.9);
}