:root {
    --bg-dark: #121212;
    --bg-panel: #1e1e1e;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent: #ff3b30; /* Bright red for darts/alerts */
    --accent-hover: #ff5247;
    --border-color: #333333;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    user-select: none; /* Prevent accidental text selection on touch */
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    height: 100vh;
    width: 100vw;
    overflow: hidden;
}

/* Login Screen */
.login-body {
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    background-color: var(--bg-panel);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    text-align: center;
    width: 90%;
    max-width: 400px;
}

.logo {
    margin-bottom: 30px;
}

.logo svg {
    margin-bottom: 10px;
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.login-form input {
    padding: 15px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-dark);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s ease;
}

.login-form input:focus {
    border-color: var(--accent);
}

.login-form button {
    padding: 15px;
    background-color: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-form button:hover {
    background-color: var(--accent-hover);
}

.error-msg {
    color: var(--accent);
    font-size: 14px;
    height: 14px;
    margin-bottom: 5px;
}

/* Main App */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Toolbar */
.toolbar {
    width: 80px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    z-index: 10;
}

.toolbar-top, .toolbar-bottom {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    align-items: center;
}

.tool-btn {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s ease;
}

.tool-btn svg {
    width: 24px;
    height: 24px;
}

.tool-btn:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.tool-btn.active {
    background-color: rgba(255, 59, 48, 0.15);
    color: var(--accent);
}

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

.export-btn:hover {
    background-color: var(--accent-hover);
    color: white;
}

/* Color Palette */
.color-palette {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
}

.color-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid transparent;
    cursor: pointer;
    transition: transform 0.2s, border-color 0.2s;
}

.color-btn:hover {
    transform: scale(1.1);
}

.color-btn.active {
    border-color: #ffffff;
    box-shadow: 0 0 5px rgba(255, 255, 255, 0.5);
}

/* Canvas Area */
.canvas-area {
    flex-grow: 1;
    position: relative;
    background-color: #000; /* Deep black for image contrast */
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden; /* Important for pan/zoom */
}

#drop-message {
    position: absolute;
    text-align: center;
    color: var(--text-secondary);
    pointer-events: none; /* Let clicks pass through */
    z-index: 5;
    border: 2px dashed var(--border-color);
    padding: 40px;
    border-radius: 20px;
    background-color: rgba(30, 30, 30, 0.8);
}

#drop-message.dragover {
    border-color: var(--accent);
    color: var(--accent);
    background-color: rgba(255, 59, 48, 0.1);
}

.canvas-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Quick Text Menu */
#quick-text-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 40px 20px;
}

#quick-text-menu.hidden {
    display: none;
}

.quick-text-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 90%;
    max-width: 600px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.quick-text-header h2 {
    color: #007aff;
    margin: 0;
}

.quick-text-colors {
    display: flex;
    gap: 12px;
    align-items: center;
}

.quick-text-scrollable {
    width: 90%;
    max-width: 600px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 40px;
}

.quick-text-btn {
    width: 100%;
    padding: 15px 20px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: #007aff;
    font-size: 16px;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s ease;
}

.quick-text-btn:hover {
    background-color: #007aff;
    color: white;
    border-color: #007aff;
}

.close-btn {
    padding: 10px 20px;
    background: transparent;
    border: 1px solid var(--text-secondary);
    color: var(--text-secondary);
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
}

/* Gallery Curtain */
.gallery-curtain {
    position: absolute;
    top: 0;
    right: 0;
    width: 350px;
    height: 100%;
    background-color: var(--bg-panel);
    border-left: 1px solid var(--border-color);
    box-shadow: -5px 0 15px rgba(0,0,0,0.5);
    z-index: 40;
    transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.gallery-curtain.closed {
    transform: translateX(100%);
}

.gallery-toggle-btn {
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 30px;
    height: 60px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: 8px 0 0 8px;
    color: var(--text-primary);
    cursor: pointer;
    z-index: 41;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: right 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

/* Move toggle button out when curtain is open */
.gallery-curtain:not(.closed) ~ .gallery-toggle-btn,
.gallery-curtain:not(.closed) + .gallery-toggle-btn,
.gallery-toggle-btn.open {
    right: 350px;
}

.gallery-toggle-btn svg {
    transition: transform 0.3s;
}

.gallery-toggle-btn.open svg {
    transform: rotate(180deg);
}

.gallery-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.gallery-header h2 {
    margin: 0;
    font-size: 16px;
    color: var(--text-primary);
}

.load-photos-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background-color: #007aff;
    color: white;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.load-photos-btn:hover {
    background-color: #0066d6;
}

.load-photos-btn svg {
    width: 16px;
    height: 16px;
}

.gallery-grid {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    align-content: start;
}

.empty-gallery-msg {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    padding: 40px 20px;
}

.gallery-thumbnail {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
    background-color: #111;
}

.gallery-thumbnail:hover {
    border-color: #007aff;
    transform: scale(1.02);
}

.gallery-thumbnail.active {
    border-color: #007aff;
    box-shadow: 0 0 10px rgba(0, 122, 255, 0.5);
}

/* Crop Actions */
#crop-actions {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 15px;
    z-index: 100;
    background-color: var(--bg-panel);
    padding: 10px 20px;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.8);
    border: 1px solid var(--border-color);
}

.crop-action-btn {
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    border: none;
    transition: transform 0.2s;
}

.crop-action-btn:hover {
    transform: scale(1.05);
}

.crop-action-btn.cancel {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.crop-action-btn.apply {
    background-color: #34c759; /* Green */
    color: white;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column-reverse;
    }
    .toolbar {
        width: 100%;
        height: 80px;
        flex-direction: row;
        border-right: none;
        border-top: 1px solid var(--border-color);
        padding: 0 20px;
    }
    .toolbar-top, .toolbar-bottom {
        flex-direction: row;
        width: auto;
    }
    form[action="/logout"] {
        margin-top: 0 !important;
        margin-left: 10px;
    }
}