:root {
    --bg-color: #0b0f19;
    --card-bg: #151c2c;
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --border-color: #1e293b;
    --success-color: #10b981;
}

body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    border-bottom: 1px solid var(--border-color);
    background: #0b0f19;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    cursor: pointer;
}

.site-logo {
    height: 40px; 
    width: auto;
    object-fit: contain;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-left: 25px;
    font-size: 15px;
    transition: color 0.3s;
    cursor: pointer;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent-color);
}

/* Containers & Sections */
.container {
    max-width: 1100px;
    margin: 50px auto;
    padding: 0 20px;
}

.page-section {
    display: none;
}

.page-section.active-section {
    display: block;
}

.hero {
    text-align: center;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 42px;
    margin-bottom: 10px;
    color: #ffffff;
}

.hero p {
    color: var(--text-muted);
    font-size: 18px;
}

/* Home Grid & Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: transform 0.3s, border-color 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
}

.card-icon {
    font-size: 35px;
    margin-bottom: 15px;
}

.card h3 {
    font-size: 22px;
    margin: 0 0 10px 0;
    color: #ffffff;
}

.card p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 20px;
}

/* Buttons */
.btn {
    display: block;
    text-align: center;
    background-color: var(--accent-color);
    color: #000;
    padding: 10px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    font-size: 15px;
    transition: background 0.3s;
    border: none;
    width: 100%;
    cursor: pointer;
    box-sizing: border-box;
}

.btn:hover {
    background-color: var(--accent-hover);
    color: #fff;
}

/* Inner Page Boxes */
.content-box {
    max-width: 650px;
    margin: 20px auto;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 35px;
}

.content-box h2 {
    margin-top: 0;
    color: #fff;
}

/* Tools Internal Styles */
textarea {
    width: 100%;
    height: 150px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    padding: 12px;
    box-sizing: border-box;
    resize: none;
    font-size: 15px;
    margin-top: 15px;
}

textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

.stats {
    display: flex;
    gap: 20px;
    margin-top: 20px;
}

.stat-box {
    background-color: var(--bg-color);
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    flex: 1;
    text-align: center;
    font-weight: bold;
}

.stat-box span {
    display: block;
    font-size: 24px;
    color: var(--accent-color);
}

.result-box {
    display: flex;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    align-items: center;
    justify-content: space-between;
    margin-top: 15px;
}

.result-box input {
    background: none;
    border: none;
    color: #ffffff;
    font-size: 16px;
    width: 100%;
    outline: none;
}

.settings-row {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 15px;
}

/* Task Layout */
ol { padding-left: 20px; color: var(--text-muted); }
ol li { margin-bottom: 12px; }
.thumbnail { width: 100%; border-radius: 8px; border: 2px solid var(--accent-color); margin: 20px 0; }
.task-btn { background-color: var(--success-color); color: #fff; }
.task-btn:hover { background-color: #059669; }

/* Footer */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 14px;
    border-top: 1px solid var(--border-color);
    margin-top: 80px;
}