/* ================================================= */
/* GLOBAL STYLES & TYPOGRAPHY */
/* ================================================= */
:root {
    --primary-color: #4CAF50; /* A pleasant green */
    --primary-dark: #45a049;
    --background-start: #E6F5E9; /* Light green start for gradient */
    --background-end: #D0EAD6; /* Slightly darker green end for gradient */
    --card-background: #FFFFFF;
    --text-color: #333;
    --sub-text-color: #666;
    --border-color: #E0E0E0;
    --shadow: 0 4px 14px rgba(0,0,0,0.08);
}

body {
    font-family: 'Roboto', sans-serif;
    /* --- MODIFIED LINE: Added gradient background --- */
    background: linear-gradient(to bottom right, var(--background-start), var(--background-end));
    /* --- END MODIFIED LINE --- */
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

.app-header {
    text-align: center;
    padding: 40px 20px 20px;
}

.app-header h1 {
    font-size: 2.5rem;
    color: var(--primary-dark);
    margin-bottom: 5px;
}

.app-container {
    width: 90%;
    max-width: 800px;
    margin: 20px auto;
    background: var(--card-background);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* ================================================= */
/* UPLOADER SECTION */
/* ================================================= */
.upload-section {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}

.file-uploader {
    display: flex;
    gap: 15px;
    align-items: center;
    width: 100%;
    justify-content: center;
}

/* Custom file input button */
.custom-file-upload {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 24px;
    cursor: pointer;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.3s ease;
    text-align: center;
}

.custom-file-upload:hover {
    background-color: var(--primary-dark);
}

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

.predict-button {
    background-color: #E0E0E0;
    color: #999;
    border: none;
    padding: 12px 24px;
    cursor: not-allowed;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.predict-button:not([disabled]) {
    background-color: #2196F3; /* A nice blue for action */
    color: white;
    cursor: pointer;
}

.predict-button:not([disabled]):hover {
    background-color: #1976D2;
}

.file-name-display {
    font-style: italic;
    color: var(--sub-text-color);
    font-size: 0.9em;
    text-align: center;
}

/* ================================================= */
/* IMAGE PREVIEW */
/* ================================================= */
.image-preview-container {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 15px;
    background-color: #FAFAFA;
}

.image-preview {
    max-width: 100%;
    max-height: 400px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: none; /* Hidden by default */
}

/* ================================================= */
/* DROP ZONE SPECIFIC STYLES */
/* ================================================= */
.drop-zone {
    text-align: center;
    padding: 30px;
}

.drop-zone-text {
    font-size: 1rem;
    color: var(--sub-text-color);
    margin: 0;
}

.drop-zone.drag-over {
    background-color: #E6F5E9; /* Lighter green for drag-over effect */
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(76, 175, 80, 0.4);
}

/* ================================================= */
/* RESULT SECTION */
/* ================================================= */
.result-section {
    border-top: 1px solid var(--border-color);
    padding-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.result-content {
    background-color: #E8F5E9; /* Light green background */
    padding: 20px;
    border-radius: 8px;
    border: 1px solid var(--primary-color);
}

.result-title {
    font-size: 1.5rem;
    color: var(--primary-dark);
    margin: 0 0 10px;
}

.result-detail {
    font-size: 1.1rem;
    color: var(--sub-text-color);
    margin: 0;
}

.result-text {
    font-weight: 700;
    color: #222;
}

.remedy-container {
    background-color: #F5F5F5;
    padding: 20px;
    border-radius: 8px;
}

.remedy-title {
    margin-top: 0;
    font-size: 1.2rem;
    color: var(--text-color);
}

.remedy-text {
    white-space: pre-wrap;
    font-family: inherit;
    margin: 0;
    color: var(--sub-text-color);
}

/* top-predictions section is removed from JS, so no need for specific CSS here,
   but I'll keep the empty styling for robustness in case it's used elsewhere
*/
.top-predictions ul {
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.top-predictions li {
    background-color: #FAFAFA;
    padding: 8px 12px;
    border-radius: 6px;
    margin-bottom: 5px;
    border: 1px solid var(--border-color);
    font-size: 0.9em;
}

.app-note {
    text-align: center;
    font-size: 0.8em;
    color: var(--sub-text-color);
}