@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Libre+Baskerville:wght@400;700&display=swap');

:root {
    --bg-primary: #f7f2ea;
    --bg-secondary: #fbf8f2;
    --bg-tertiary: #efe7da;
    --text-primary: #2a241c;
    --text-secondary: #4a3f31;
    --text-muted: #7a6a58;
    --accent: #b45a3c;
    --accent-hover: #9b4a2f;
    --border: #d9cdbd;
    --success: #5a7a5f;
    --error: #b85c5c;
    --shadow: rgba(34, 24, 16, 0.12);
}

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

body {
    font-family: 'Libre Baskerville', Georgia, 'Times New Roman', serif;
    background:
        radial-gradient(1200px 800px at 10% 0%, rgba(255, 255, 255, 0.6), transparent 60%),
        radial-gradient(900px 700px at 90% 10%, rgba(255, 255, 255, 0.4), transparent 55%),
        linear-gradient(180deg, #f8f3ea 0%, #f3ede2 100%);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 1.25rem 1.25rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    text-align: center;
    margin-bottom: 1.25rem;
    animation: fadeInDown 0.6s ease-out;
}

h1 {
    font-family: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    letter-spacing: 0.02em;
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.upload-area {
    background: var(--bg-secondary);
    border: 2px dashed var(--border);
    border-radius: 1rem;
    padding: 4rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    animation: fadeIn 0.6s ease-out 0.2s both;
    box-shadow: 0 10px 30px var(--shadow);
}

.upload-area.drag-over {
    border-color: var(--accent);
    background: rgba(180, 90, 60, 0.08);
    transform: scale(1.02);
}

.upload-content {
    max-width: 500px;
    margin: 0 auto;
}

.upload-icon {
    width: 80px;
    height: 80px;
    color: var(--accent);
    margin-bottom: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

.upload-area h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.upload-area p {
    color: var(--text-muted);
    margin: 1rem 0;
}

.hint {
    font-size: 0.9rem;
    margin-top: 1.5rem !important;
}

.sample-btn {
    margin-top: 1rem;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: 0 6px 16px rgba(180, 90, 60, 0.25);
    border-color: transparent;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 8px 18px rgba(180, 90, 60, 0.28);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-icon {
    padding: 0.5rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
}

.btn-icon svg {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

.btn-icon:hover {
    background: var(--bg-tertiary);
}

.viewer-area {
    display: flex;
    flex-direction: column;
    gap: 0;
    animation: fadeIn 0.4s ease-out;
    flex: 1;
}

.topbar {
    background: var(--bg-secondary);
    border-radius: 0;
    padding: 0.5rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    box-shadow: none;
    position: sticky;
    top: 0;
    z-index: 5;
}

.topbar-title {
    display: flex;
    align-items: baseline;
    gap: 0.5rem 0.75rem;
    flex-wrap: wrap;
}

.title-text {
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
    font-family: 'Cormorant Garamond', Georgia, 'Times New Roman', serif;
}

.file-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.file-dimensions {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.topbar-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.zoom-level {
    min-width: 60px;
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
}

.divider {
    width: 1px;
    height: 24px;
    background: var(--border);
    margin: 0 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.canvas-container {
    background: var(--bg-secondary);
    border-radius: 1rem;
    overflow: auto;
    position: relative;
    height: auto;
    min-height: 360px;
    box-shadow: 0 4px 12px var(--shadow);
    cursor: grab;
    border: 1px solid var(--border);
}

.canvas-container:active {
    cursor: grabbing;
}

#image-canvas {
    display: block;
    margin: 0 auto;
    transform-origin: top left;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
}

.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1rem;
}

.error-message {
    background: rgba(184, 92, 92, 0.08);
    border: 1px solid var(--error);
    border-radius: 0.5rem;
    padding: 1rem 1.5rem;
    margin-top: 1rem;
    color: var(--error);
    animation: shake 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-10px);
    }
    75% {
        transform: translateX(10px);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0.75rem 0.75rem 1rem;
    }
    
    h1 {
        font-size: 1.6rem;
    }
    
    .canvas-container {
        min-height: 280px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}
.app-footer {
    margin-top: 0.75rem;
    text-align: center;
    opacity: 0.85;
}