@charset "utf-8";

/* ============================================
   MODERN COLORFUL DESIGN
   ============================================ */

/* Reset and base setup */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    overflow-x: hidden;
}

body {
    /* Gradient background - purple to blue */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Main content wrapper */
main {
    flex: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 15px;
}

/* Header with glass effect */
#header {
    margin: 0 auto;
    max-width: 100%;
    padding: 20px 0;
}

/* Navigation - Modern card style */
.nav {
    font-size: 15px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px;
    margin: 0 10px 20px 10px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.nav ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}

.nav ul li {
    display: inline;
    margin: 0;
    padding: 0;
    position: relative;
}

.nav ul li a {
    display: inline-block;
    color: #667eea;
    padding: 15px 25px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

/* Hover effect with sliding background */
.nav ul li a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav ul li a:hover::before {
    left: 0;
}

.nav ul li a:hover {
    color: white;
    transform: translateY(-2px);
}

/* Content card styling */
h2 {
    font-size: 24px;
    font-weight: 700;
    color: #2d3748;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 20px;
    margin: 0 10px 20px 10px;
    border-radius: 15px;
    border-left: 5px solid #667eea;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Paragraph container with card style */
p {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 25px;
    margin: 0 10px 20px 10px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    font-size: 14px;
    color: #2d3748;
    line-height: 1.8;
    max-width: 100%;
    word-wrap: break-word;
}

/* Styled ordered list */
ol {
    margin: 0;
    padding-left: 0;
    list-style: none;
    counter-reset: custom-counter;
}

ol li {
    counter-increment: custom-counter;
    position: relative;
    padding: 15px 15px 15px 60px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #f6f8fb 0%, #ffffff 100%);
    border-radius: 10px;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

ol li::before {
    content: counter(custom-counter);
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

ol li:hover {
    transform: translateX(5px);
    border-left-color: #667eea;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

/* Links styling */
p a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    word-break: break-word;
}

p a:hover {
    color: #764ba2;
    border-bottom-color: #764ba2;
}

/* Footer - Modern gradient card */
.nav2 {
    font-size: 14px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 15px 15px 0 0;
    margin: 20px 10px 0 10px;
    margin-top: auto;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
}

.nav2 p {
    text-align: center;
    color: #2d3748;
    margin: 0;
    padding: 20px;
    background: transparent;
    box-shadow: none;
    word-wrap: break-word;
    border-radius: 0;
}

.nav2 p a {
    display: inline-block;
    color: #667eea;
    padding: 8px 16px;
    text-decoration: none;
    font-weight: 600;
    margin: 0 5px;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: rgba(102, 126, 234, 0.1);
    border: none;
}

.nav2 p a:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.clear {
    clear: both;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

/* Tablets */
@media screen and (max-width: 768px) {
    body {
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    }

    .nav ul {
        justify-content: center;
    }

    h2 {
        font-size: 20px;
        padding: 18px;
    }

    p {
        font-size: 15px;
        padding: 20px;
    }

    ol li {
        padding: 12px 12px 12px 55px;
    }

    ol li::before {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }
}

/* Mobile phones */
@media screen and (max-width: 480px) {
    .nav, .nav2, h2, p {
        margin: 0 5px 15px 5px;
        border-radius: 12px;
    }

    .nav ul li a {
        padding: 12px 18px;
        font-size: 14px;
    }

    h2 {
        font-size: 18px;
        padding: 15px;
    }

    p {
        font-size: 15px;
        padding: 18px;
    }

    ol li {
        padding: 10px 10px 10px 50px;
        margin-bottom: 10px;
    }

    ol li::before {
        width: 30px;
        height: 30px;
        font-size: 13px;
        left: 10px;
    }
}

/* Very small phones */
@media screen and (max-width: 320px) {
    .nav ul {
        flex-direction: column;
    }

    .nav ul li {
        width: 100%;
    }

    .nav ul li a {
        display: block;
        text-align: center;
        padding: 15px;
    }

    h2 {
        font-size: 16px;
    }

    ol li {
        font-size: 14px;
    }
}

/* Smooth animations */
* {
    transition: background-color 0.3s ease;
}