/* Import a modern, clean font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #4b5563;
    --background-light: #f9fafb;
    --background-white: #ffffff;
    --text-dark: #1f2937;
    --text-gray: #4b5563;
    --border-radius-lg: 1rem;
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-light);
    color: var(--text-dark);
    margin: 0;
    padding: 0;
    height: 100vh;
}

/* Hero Section */
.hero {
    padding: 2rem 1rem;
    text-align: center;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #5b21b6;
}

.hero .description {
    font-size: 1rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Upload Box */
.upload-box {
    border: 2px dashed #d1d5db;
    border-radius: var(--border-radius-lg);
    padding: 3rem 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    background-color: var(--background-white);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.upload-box:hover {
    border-color: var(--primary-color);
    background-color: #f3f4f6;
}

.upload-box p {
    margin: 0;
    font-weight: 500;
    color: var(--text-gray);
}

.upload-box .upload-icon {
    font-size: 8rem;
    color: var(--primary-color);
}

.upload-box .bi-folder-plus{
     font-size: 4rem;
  color: #5b21b6;
  margin-bottom: 0.5rem;
}

.upload-box  p{
  font-size: 1.0rem;
  font-weight: 400;
  color: #4c1d95;
  margin: 0;
}

/* Loading Spinner */
#loading.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed #ccc;
    border-radius: 12px;
    padding: 2.5rem 1rem;
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}

#loading .spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(0, 0, 0, 0.1);
    border-top: 5px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

#loading .loading-text {
    font-size: 1rem;
    color: var(--text-dark);
}

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

.hidden {
    display: none;
}

/* Workspace Layout */
.workspace {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

/* Preview Frame */
.preview-frame {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    background-color: var(--background-white);
    border: 1px solid #e5e7eb;
}

#pdf-canvas {
    width: 100%;
    height: auto;
    display: block;
}

.watermark-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: move;
}

.watermark-text {
    font-weight: 700;
    color: rgba(0, 0, 0, 0.5);
    user-select: none;
    white-space: nowrap;
}

.resize-handle {
    position: absolute;
    width: 1rem;
    height: 1rem;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: nwse-resize;
}

.resize-handle.br {
    bottom: 0;
    right: 0;
    transform: translate(50%, 50%);
}

/* Controls Panel */
.controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background-color: var(--background-white);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

.controls label {
    font-weight: 600;
    color: var(--text-dark);
}

.controls input[type="text"],
.controls input[type="range"],
.controls select {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid #d1d5db;
    background-color: #f9fafb;
    color: var(--text-dark);
    transition: border-color 0.2s;
}

.controls input:focus,
.controls select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn.gray {
    background-color: var(--secondary-color);
    color: var(--background-white);
}

.btn.gray:hover {
    background-color: var(--text-dark);
}

.btn.green {
    background-color: #10b981;
    color: #ffffff;
}

.btn.green:hover {
    background-color: #059669;
}

/* Unified Guide Section */
.taptopdf-guide-section {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-light); /* Unified background */
    padding: 4rem 1rem;
    color: var(--text-dark);
}

.taptopdf-guide-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 2.5rem;
    color: var(--text-dark); /* Unified text color */
}

.taptopdf-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: stretch; /* All cards will stretch to the same height */
    gap: 1rem;
    margin-bottom: 3rem;
}

.taptopdf-step-card {
    background-color: var(--background-white); /* Unified background */
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
    /* Added flex properties to the card itself */
    flex: 1 1 200px; /* This allows cards to grow but maintain a base width */
    max-width: 250px; /* Set a max-width to prevent them from becoming too wide */
}

.taptopdf-step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.step-number {
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color); /* Unified color */
    color: #ffffff;
    font-weight: 700;
    border-radius: 9999px;
    margin: 0 auto 1rem;
    font-size: 1.25rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.taptopdf-step-card p {
    color: var(--text-gray); /* Unified text color */
    font-size: 1.125rem;
    line-height: 1.5;
}

.tool-explore {
    background-color: var(--text-dark); /* Unified background */
    color: #ffffff;
    border-radius: var(--border-radius-lg);
    padding: 2.5rem 1.5rem;
    text-align: center;
}

.tool-explore h3 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.tool-links {
    display: flex;
    flex-wrap: wrap;
    flex-direction: column; /* Stack buttons vertically on small screens */
    align-items: center; /* Center buttons horizontally */
    gap: 0.5rem;
}

.tool-links a {
    display: flex;
    align-items: center;
    justify-content: center; /* Center the icon and text */
    gap: 0.5rem;
    color: #ffffff;
    background-color: var(--secondary-color); /* Unified color */
    padding: 0.75rem 1.25rem;
    border-radius: 0.75rem;
    text-decoration: none;
    transition: background-color 0.3s ease-in-out, transform 0.3s ease-in-out;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    width: 100%; /* Make buttons full width on small screens */
    max-width: 250px; /* Limit button width on larger screens */
}

.tool-links a:hover {
    background-color: var(--text-gray); /* Unified hover color */
    transform: translateY(-3px);
}

.tool-links i {
    font-size: 1.25rem;
}

/* Media queries for tablets and desktops */
@media (min-width: 768px) {
    .hero {
        padding: 4rem 1.5rem;
    }

    .hero h1 {
        font-size: 3.5rem;
    }

    .hero .description {
        font-size: 1.125rem;
    }

    .workspace {
        flex-direction: row;
    }

    .preview-frame {
        flex: 3;
    }

    .controls {
        flex: 1.5;
    }

    /* Set justify-content to center for larger screens */
    .taptopdf-steps {
        justify-content: center;
    }

    /* Adjust tool links for larger screens */
    .tool-links {
        flex-direction: row; /* Go back to horizontal alignment */
        justify-content: center; /* Center the links on large screens */
    }

    .tool-links a {
        width: auto; /* Revert button width */
    }
}