:root {
    --bg-app: #F2F2F7;
    --bg-toolbar: rgba(255, 255, 255, 0.9);
    --border-light: rgba(0, 0, 0, 0.1);
    --text-primary: #000000;
    --accent: #007AFF;
    --danger: #FF3B30;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --radius: 12px;
}

[data-theme="dark"] {
    --bg-app: #1C1C1E;
    --bg-toolbar: rgba(40, 40, 40, 0.9);
    --border-light: rgba(255, 255, 255, 0.15);
    --text-primary: #FFFFFF;
    --accent: #0A84FF;
    --shadow: 0 4px 20px rgba(0,0,0,0.5);
}

body {
    margin: 0; padding: 0; height: 100vh; overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-app); color: var(--text-primary);
    user-select: none; transition: background 0.3s;
}

/* Toolbar Container */
.toolbar-wrapper {
    position: absolute; top: 20px; left: 0; right: 0;
    display: flex; justify-content: center; z-index: 1000;
    pointer-events: none;
}

.glass-bar {
    pointer-events: auto;
    background: var(--bg-toolbar);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
    border-radius: 18px;
    padding: 8px 16px; /* Etwas breiter für den Titel */
    display: flex; align-items: center; gap: 10px;
    box-shadow: var(--shadow);
}

/* APP TITLE */
.app-brand {
    font-weight: 700; font-size: 1rem; color: var(--text-primary);
    margin-right: 10px; cursor: pointer; white-space: nowrap;
    opacity: 0.8; transition: opacity 0.2s;
}
.app-brand:hover { opacity: 1; color: var(--accent); }

.divider { width: 1px; height: 24px; background: var(--border-light); margin: 0 4px; }
.hidden { display: none !important; }

/* Buttons */
.btn-icon {
    width: 38px; height: 38px;
    border-radius: var(--radius); border: none;
    background: transparent; color: var(--text-primary);
    cursor: pointer; display: flex; justify-content: center; align-items: center;
    font-size: 1.2rem; transition: all 0.2s;
}
.btn-icon:hover { background: var(--border-light); }
.btn-icon.active { background: var(--accent); color: white; box-shadow: 0 2px 10px rgba(0,122,255,0.3); }
.btn-icon.danger { color: var(--danger); }

/* File Upload */
.file-upload-label {
    width: 38px; height: 38px;
    border-radius: var(--radius); border: 1px solid var(--border-light);
    display: flex; justify-content: center; align-items: center;
    cursor: pointer; background: transparent; font-size: 1.2rem;
}
.file-upload-label:hover { background: var(--border-light); }
input[type="file"] { display: none; }

/* Font Input */
.num-input {
    width: 50px; height: 38px; border: 1px solid var(--border-light);
    border-radius: var(--radius); background: transparent;
    color: var(--text-primary); text-align: center; font-weight: 600;
    font-size: 0.9rem; -moz-appearance: textfield;
}
.num-input:focus { border-color: var(--accent); outline: none; }

.zoom-display { font-size: 0.85rem; font-weight: 600; min-width: 45px; text-align: center; }

/* User Avatar */
.user-avatar {
    width: 32px; height: 32px; border-radius: 50%;
    object-fit: cover; cursor: pointer; border: 2px solid transparent;
}
.user-avatar:hover { border-color: var(--accent); }

.dropdown-menu {
    position: absolute; top: 60px; right: 0; width: 180px;
    background: var(--bg-toolbar); backdrop-filter: blur(30px);
    border: 1px solid var(--border-light); border-radius: 12px;
    padding: 6px; display: none; flex-direction: column;
    box-shadow: var(--shadow);
}
.dropdown-menu.show { display: flex; }
.dropdown-item {
    background: none; border: none; text-align: left; padding: 10px;
    color: var(--text-primary); cursor: pointer; border-radius: 6px;
}
.dropdown-item:hover { background: var(--border-light); }

/* WORKSPACE */
#workspace {
    height: 100%; overflow: auto;
    padding: 100px 0;
    display: flex; flex-direction: column; align-items: center;
}

.page-wrapper {
    position: relative; margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    background: white; 
    transform-origin: center top; /* Wichtig für Zoom */
}
.drawing-layer {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; z-index: 10;
}

/* Cursor Styles */
.mode-cursor .drawing-layer { cursor: default; }
.mode-text .drawing-layer { cursor: text; }
.mode-highlight .drawing-layer { cursor: crosshair; }

/* Elements */
.el-text {
    position: absolute; padding: 2px 4px;
    font-family: Helvetica, sans-serif; color: black; line-height: 1.2;
    border: 1px solid transparent; cursor: move; white-space: nowrap;
    transform-origin: top left;
}
.el-text:focus {
    cursor: text; background: rgba(255,255,255,0.9);
    border: 1px solid var(--accent); outline: none;
}

.el-highlight {
    position: absolute; background: rgba(255, 235, 59, 0.4);
    mix-blend-mode: multiply; cursor: pointer;
}
.el-highlight.selected { border: 2px solid var(--accent); }

/* Loader */
#loader {
    position: fixed; inset: 0; background: var(--bg-app); z-index: 2000;
    display: flex; justify-content: center; align-items: center; flex-direction: column;
}
.spinner {
    width: 30px; height: 30px; border: 3px solid var(--border-light);
    border-top-color: var(--accent); border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to {transform: rotate(360deg);} }