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

body {
    font-family: 'Inter', sans-serif; /* Modern Font */
    background-color: #f0f4f8; /* Soft Blue-Grey Background */
    color: #333;
    line-height: 1.6;
    padding: 20px;
    display: flex;
    justify-content: center;
    min-height: 100vh;
}

/* MAIN CONTAINER (Mobile App Feel) */
.app-container {
    width: 100%;
    max-width: 480px; /* Perfect width for mobile view */
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05); /* Soft premium shadow */
    padding: 30px;
    height: fit-content;
}

/* HEADER */
.app-header {
    text-align: center;
    margin-bottom: 25px;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: #2c3e50;
    letter-spacing: -0.5px;
}

.tagline {
    color: #7f8c8d;
    font-size: 14px;
    margin-top: 5px;
}

/* FORM STYLING */
.search-card {
    background-color: #fff;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    color: #34495e;
    margin-bottom: 8px;
}

label span {
    font-weight: 400;
    color: #95a5a6;
    font-size: 12px;
}

/* Professional Input Fields */
input {
    width: 100%;
    padding: 14px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s ease;
    background-color: #f8fafc;
}

input:focus {
    outline: none;
    border-color: #3498db; /* Blue focus color */
    background-color: #fff;
}

/* MAIN BUTTON */
.search-btn {
    width: 100%;
    background-color: #27ae60; /* Professional Green */
    color: white;
    padding: 16px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-shadow: 0 4px 6px rgba(39, 174, 96, 0.2);
}

.search-btn:active {
    transform: scale(0.98); /* Click effect */
}

/* QUICK LIBRARY (Accordion) */
.quick-links {
    margin-top: 30px;
}

.quick-links h3 {
    font-size: 16px;
    color: #7f8c8d;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.accordion {
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    margin-bottom: 10px;
    overflow: hidden;
    background: #fff;
}

.accordion summary {
    padding: 15px;
    background-color: #f8fafc;
    cursor: pointer;
    font-weight: 600;
    color: #2c3e50;
    list-style: none; /* Hide default arrow */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Custom Arrow for Accordion */
.accordion summary::after {
    content: '+';
    font-size: 20px;
    color: #7f8c8d;
}

.accordion[open] summary::after {
    content: '-';
}

.accordion-content {
    padding: 15px;
    border-top: 1px solid #e2e8f0;
}

.accordion-content a {
    display: block;
    padding: 8px 0;
    color: #3498db;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid #f1f1f1;
}

.accordion-content a:last-child {
    border-bottom: none;
}

/* FOOTER */
.app-footer {
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    font-size: 12px;
    color: #95a5a6;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #27ae60;
    border-radius: 50%;
    margin-right: 5px;
}