/* Common Styles for All Tool Pages */

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

:root {
    --primary-color: #FF6B6B;
    --primary-dark: #FF5252;
    --secondary-color: #4ECDC4;
    --text-color: #2D3436;
    --text-light: #636E72;
    --bg-color: #F8F9FA;
    --card-bg: #FFFFFF;
    --border-color: #E1E8ED;
    --success-color: #51CF66;
    --error-color: #FF6B6B;
    --warning-color: #FFC107;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.tool-header {
    background: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

.tool-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--text-color);
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
}

.back-btn {
    background: var(--bg-color);
    color: var(--text-color);
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.back-btn:hover {
    background: var(--primary-color);
    color: white;
}

/* Tool Section */
.tool-section {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

.tool-title {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-color);
}

.tool-description {
    font-size: 16px;
    color: var(--text-light);
    margin-bottom: 30px;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 60px 40px;
    text-align: center;
    background: var(--bg-color);
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(255, 107, 107, 0.05);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(255, 107, 107, 0.1);
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.upload-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
}

.upload-subtext {
    font-size: 14px;
    color: var(--text-light);
}

input[type="file"] {
    display: none;
}

/* Buttons */
.btn {
    padding: 12px 30px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.3);
}

.btn-secondary {
    background: var(--bg-color);
    color: var(--text-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* File Info */
.file-info {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 12px;
    margin: 20px 0;
    display: none;
}

.file-info.show {
    display: block;
}

.file-name {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 5px;
}

.file-size {
    font-size: 14px;
    color: var(--text-light);
}

/* Progress Bar */
.progress-container {
    margin: 20px 0;
    display: none;
}

.progress-container.show {
    display: block;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    width: 0%;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    margin-top: 10px;
    font-size: 14px;
    color: var(--text-light);
}

/* Result Area */
.result-area {
    margin-top: 30px;
    display: none;
}

.result-area.show {
    display: block;
}

/* Alert */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin: 20px 0;
    display: none;
}

.alert.show {
    display: block;
}

.alert-success {
    background: rgba(81, 207, 102, 0.1);
    border: 1px solid var(--success-color);
    color: var(--success-color);
}

.alert-error {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid var(--error-color);
    color: var(--error-color);
}

.alert-warning {
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid var(--warning-color);
    color: #F59F00;
}

/* Options */
.options-section {
    margin: 30px 0;
}

.option-group {
    margin-bottom: 20px;
}

.option-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-color);
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    transition: all 0.3s ease;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

textarea {
    min-height: 200px;
    resize: vertical;
}

/* Features List */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 30px 0;
}

.feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.feature-icon {
    font-size: 24px;
}

.feature-text h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}

.feature-text p {
    font-size: 14px;
    color: var(--text-light);
}

/* Footer */
.tool-footer {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}

.tool-footer a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Loading Spinner */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 20px auto;
    display: none;
}

.spinner.show {
    display: block;
}

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

/* Responsive */
@media (max-width: 768px) {
    .tool-section {
        padding: 30px 20px;
    }

    .tool-title {
        font-size: 24px;
    }

    .upload-area {
        padding: 40px 20px;
    }

    .features {
        grid-template-columns: 1fr;
    }
}