:root {
    --primary: #e5322d;
    --primary-hover: #cc2b26;
    --dark: #33333b;
    --light: #f5f5fa;
    --gray: #707078;
    --border: #dfdfeb;
    --bg: #f8f9fa;
    --success: #0b9c5b;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--dark);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header & Navbar Global Styles */
.header { background-color: #FFFFFF; padding: 15px 0; box-shadow: 0 1px 3px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
.header-container { display: flex; align-items: center; justify-content: space-between; }
.logo { display: inline-flex; align-items: center; gap: 8px; font-size: 22px; font-weight: 700; color: #333333; text-decoration: none; letter-spacing: -0.5px; }
.logo i { color: #E5322D; font-size: 26px; }
.logo span { color: #E5322D; }
.main-nav { display: flex; gap: 20px; }
.main-nav a { text-decoration: none; color: #333333; font-weight: 500; font-size: 15px; transition: all 0.25s ease-in-out; }
.main-nav a:hover { color: #E5322D; }

/* Home */
.home-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: #f8f9fa;
}

.hero {
    text-align: center;
    padding: 80px 20px;
    max-width: 800px;
}

.hero h1 {
    font-size: 46px;
    margin-bottom: 20px;
    color: var(--dark);
    font-weight: 800;
    letter-spacing: -1px;
}

.hero p {
    font-size: 20px;
    color: var(--gray);
    line-height: 1.6;
    max-width: 600px;
    margin: 0 auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    width: 100%;
    max-width: 900px;
    margin-bottom: 80px;
}

.tool-card {
    background: #fff;
    border-radius: 16px;
    padding: 50px 30px;
    text-align: center;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.tool-card:hover h3 {
    color: var(--primary);
}

.tool-icon {
    color: var(--primary);
    margin-bottom: 25px;
    background: #fff0f0;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tool-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    transition: color 0.3s;
    font-weight: 700;
}

.tool-card p {
    color: var(--gray);
    font-size: 16px;
    line-height: 1.5;
}

/* Tool Pages */
.tool-page {
    background: #f0f0f5;
}

.tool-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-bottom: 40px;
}

.tool-header {
    text-align: center;
    padding: 50px 20px;
}

.tool-header h1 {
    font-size: 40px;
    margin-bottom: 15px;
    color: var(--dark);
    font-weight: 800;
    letter-spacing: -1px;
}

.tool-header p {
    font-size: 20px;
    color: var(--gray);
}

.workspace {
    display: flex;
    flex-direction: column;
    max-width: 1100px;
    width: 100%;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.08);
    overflow: hidden;
}

@media (min-width: 768px) {
    .workspace {
        flex-direction: row;
        min-height: 550px;
    }
}

.main-panel {
    flex: 1;
    padding: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fafafc;
    position: relative;
}

.ilovepdf-dropzone {
    width: 100%;
    max-width: 600px;
    background: transparent;
    border: 3px dashed var(--border);
    border-radius: 20px;
    padding: 80px 20px;
    text-align: center;
    color: var(--dark);
    cursor: pointer;
    transition: transform 0.2s, background 0.3s, border-color 0.3s;
}

.ilovepdf-dropzone:hover {
    background: #fff;
    border-color: var(--primary);
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.drop-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.drop-content svg {
    margin-bottom: 15px;
    color: var(--primary);
}

#dropZoneText {
    font-size: 28px;
    font-weight: 700;
}

.sub-text {
    font-size: 18px;
    opacity: 0.9;
}

.sidebar {
    width: 100%;
    background: #fff;
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    opacity: 0.5;
    pointer-events: none;
    transition: opacity 0.3s;
}

@media (min-width: 768px) {
    .sidebar {
        width: 350px;
    }
}

.sidebar.active {
    opacity: 1;
    pointer-events: auto;
}

.sidebar-header {
    padding: 25px 30px;
    font-size: 20px;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
    background: #fff;
}

.sidebar-content {
    padding: 30px;
    flex: 1;
    overflow-y: auto;
}

.sidebar-footer {
    padding: 25px 30px;
    border-top: 1px solid var(--border);
    background: #fff;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 15px;
    color: var(--dark);
}

textarea, input[type="password"], input[type="text"] {
    width: 100%;
    padding: 15px;
    border: 2px solid var(--border);
    border-radius: 10px;
    box-sizing: border-box;
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.2s;
    background: #fafafc;
}

textarea:focus, input[type="password"]:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
}

textarea {
    resize: vertical;
    height: 140px;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.radio-group label {
    display: flex;
    align-items: center;
    font-weight: 500;
    margin: 0;
    cursor: pointer;
    gap: 10px;
    font-size: 15px;
}

.radio-group input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
}

.btn-action {
    width: 100%;
    padding: 18px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: background 0.2s, transform 0.1s;
}

.btn-action:hover {
    background: var(--primary-hover);
}

.btn-action:active {
    transform: scale(0.98);
}

.preview-area {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px;
    box-sizing: border-box;
}

.preview-box {
    background: #fff;
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.06);
    text-align: center;
    max-width: 100%;
}

.preview-box img {
    max-width: 100%;
    max-height: 350px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.file-name {
    margin-top: 20px;
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    word-break: break-all;
}

.download-area, .result-area {
    text-align: center;
    width: 100%;
    max-width: 500px;
}

.success-message {
    margin-bottom: 30px;
}

.success-message h2 {
    color: var(--success);
    font-size: 32px;
    margin-bottom: 15px;
    font-weight: 800;
}

.success-message p {
    color: var(--gray);
    font-size: 18px;
}

.btn-hero {
    display: inline-block;
    padding: 20px 40px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.2s, background 0.3s;
    box-shadow: 0 10px 25px rgba(229, 50, 45, 0.3);
    margin-bottom: 25px;
    width: 100%;
    box-sizing: border-box;
}

.btn-hero:hover {
    background: var(--primary-hover);
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(229, 50, 45, 0.4);
}

.btn-hero.btn-secondary {
    background: var(--dark);
    box-shadow: 0 10px 25px rgba(51, 51, 59, 0.3);
}

.btn-hero.btn-secondary:hover {
    background: #000;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.link-btn {
    display: inline-block;
    color: var(--gray);
    text-decoration: none;
    font-size: 16px;
    font-weight: 600;
}

.link-btn:hover {
    color: var(--primary);
    text-decoration: underline;
}

.footer { margin-top: auto; background-color: #0B192C; border-top: none; padding: 40px 0 20px; text-align: center; color: #A0ABC0; font-size: 14px; }
.footer-container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }
.footer-links { display: flex; justify-content: center; gap: 25px; margin-bottom: 20px; flex-wrap: wrap; }
.footer-links a { color: #E2E8F0; text-decoration: none; transition: all 0.25s ease-in-out; }
.footer-links a:hover { color: #FFFFFF; }
@media (max-width: 768px) {
    .header-container { flex-direction: column; gap: 15px; }
    .main-nav { flex-wrap: wrap; justify-content: center; gap: 15px; }
}