/* ------------------------------
   GLOBAL THEME VARIABLES
------------------------------ */
:root {
    --bg: #ffffff;
    --text: #000000;
    --card-bg: #f7f7f7;
    --border: #dddddd;
}

body.dark {
    --bg: #121212;
    --text: #ffffff;
    --card-bg: #1e1e1e;
    --border: #333333;
}

/* ------------------------------
   GLOBAL RESET
------------------------------ */
body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
	background: var(--bg);
    color: var(--text);
    transition: background 0.3s, color 0.3s;
}

/* ------------------------------
   CONTENT LAYOUT (PREMIUM)
------------------------------ */
.content {
    padding: 60px 5% 40px 5%;
    max-width: 1400px;
    margin: 0 auto;
    display: block;
    box-sizing: border-box;
}

/* ------------------------------
   TYPOGRAPHY
------------------------------ */
.welcome {
    margin-top: 0;
    font-size: 26px;
    font-weight: bold;
}

.subtitle {
    margin-top: -10px;
    margin-bottom: 30px;
    font-size: 16px;
    opacity: 0.8;
}

/* ------------------------------
   UPLOAD BOX
------------------------------ */
.upload-box {
    background: var(--card-bg);
    padding: 25px;
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 40px;
}

.upload-form {
    margin-bottom: 20px;
}

.upload-form input[type="file"] {
    margin-bottom: 10px;
}

.upload-form button {
    padding: 8px 16px;
    background: #0078ff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.upload-form button:hover {
    background: #005fcc;
}

/* ------------------------------
   DRAG & DROP AREA (OLD)
   (Μένει μόνο αν το χρειάζεσαι αλλού)
------------------------------ */
.drag-area {
    margin-top: 20px;
    padding: 40px;
    border: 2px dashed #888;
    border-radius: 8px;
    text-align: center;
    font-size: 16px;
    opacity: 0.9;
}

/* ------------------------------
   DARK MODE OVERRIDES
------------------------------ */
body.dark .upload-box {
    background: var(--card-bg);
    border-color: var(--border);
}

body.dark .drag-area {
    border-color: #666;
    color: #ddd;
}