/* Base styles and CSS variables */
:root {
    /* Light mode colors (default) */
    --bg-color: #f9f9f9;
    --container-bg: #ffffff;
    --text-color: #444444;
    --heading-color: #2c3e50;
    --border-color: #e0e0e0;
    --accent-color: #3498db;
    --accent-hover: #2980b9;
    --drop-area-bg: #f7fafc;
    --drop-area-border: #c8d6e5;
    --drop-area-hover-bg: #e3f2fd;
    --drop-area-hover-border: #3498db;
    --textarea-bg: #f9f9f9;
    --textarea-border: #ddd;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --shadow-hover: rgba(0, 0, 0, 0.1);
}

/* Dark mode colors - Rosé Pine palette */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #191724; /* base */
        --container-bg: #1f1d2e; /* surface */
        --text-color: #e0def4; /* text */
        --heading-color: #e0def4; /* text */
        --border-color: #6e6a86; /* muted */
        --accent-color: #31748f; /* pine */
        --accent-hover: #9ccfd8; /* foam */
        --drop-area-bg: #26233a; /* overlay */
        --drop-area-border: #6e6a86; /* muted */
        --drop-area-hover-bg: #26233a; /* overlay */
        --drop-area-hover-border: #c4a7e7; /* iris */
        --textarea-bg: #26233a; /* overlay */
        --textarea-border: #6e6a86; /* muted */
        --shadow-color: rgba(25, 23, 36, 0.3); /* base with opacity */
        --shadow-hover: rgba(25, 23, 36, 0.4); /* base with opacity */
    }
}

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

/* Apply variable colors */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    max-width: 900px;
    margin: 0 auto;
    padding: 25px;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    background-color: var(--container-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

h1 {
    color: var(--heading-color);
    font-weight: 600;
    font-size: 2.2rem;
    margin: 0;
}

.drop-area {
    border: 2px dashed var(--drop-area-border);
    border-radius: 12px;
    padding: 50px 40px;
    text-align: center;
    cursor: pointer;
    margin-bottom: 30px;
    margin-top: 30px;
    transition: all 0.3s ease;
    background-color: var(--drop-area-bg);
}

.drop-area:hover, .drop-area.dragover {
    background-color: var(--drop-area-hover-bg);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--shadow-color);
}

.drop-area p {
    margin: 0;
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 500;
}
#resultCanvas {
    max-width: 100%;
    margin: 20px auto;
    display: none; /* Hide the canvas, we'll use the copyable image instead */
    box-shadow: 0 15px 35px var(--shadow-color), 0 5px 15px var(--shadow-color);
}

.hidden {
    display: none;
}

.actions-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin: 25px auto 15px;
}

.action-btn {
    background-color: var(--accent-color);
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 30px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px var(--shadow-color), 0 1px 3px var(--shadow-color);
    letter-spacing: 0.025em;
}

.action-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 7px 14px var(--shadow-hover), 0 3px 6px var(--shadow-hover);
}

.action-btn.hidden {
    display: none;
}
.results-container {
    text-align: center;
}

#copyImageContainer {
    margin: 30px auto;
}

.copy-instruction {
    margin: 0;
    color: var(--text-color);
    font-style: italic;
    font-size: 0.95rem;
}

#copyableImage {
    max-width: 100%;
    box-shadow: 0 15px 35px var(--shadow-color), 0 5px 15px var(--shadow-color);
    cursor: context-menu;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#copyableImage:hover {
    transform: translateY(-3px);
    box-shadow: 0 18px 35px var(--shadow-hover), 0 8px 15px var(--shadow-hover);
}

.watermark {
    margin-top: 25px;
    margin-bottom: 30px;
    font-size: 0.85rem;
    color: var(--text-color);
    opacity: 0.6;
    text-align: center;
}

#textExifContainer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

#textExifContainer h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: var(--heading-color);
    font-weight: 600;
}

#exifTextArea {
    width: 100%;
    height: 120px;
    padding: 12px;
    border: 1px solid var(--textarea-border);
    border-radius: 4px;
    background-color: var(--textarea-bg);
    color: var(--text-color);
    font-family: monospace;
    resize: vertical;
    margin-bottom: 15px;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}