:root {
    --google-blue: #1b66e8; 
    --google-blue-dark: #1555c5;
    --surface-color: #ffffff;
    --background-color: #f5f5f7; 
    --text-color: #202124; 
    --text-secondary: #5f6368;
    --shadow-elevation: 0 4px 8px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    --border-radius-lg: 30px;
}

body {
    font-family: 'Roboto', 'Noto Sans SC', Arial, sans-serif; 
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
    background: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 0 20px;
    line-height: 1.6; 
}
.page-header {
    width: 100%;
    max-width: 1200px;
    padding-top: 20px;
    padding-bottom: 20px;
    text-align: center;
}

h1 {
    color: var(--text-color);
    margin: 0 0 2.5rem 0; 
    font-size: 2.2rem;
    font-weight: 400; 
    border-bottom: 2px solid var(--google-blue);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.search-box {
    display: flex;
    justify-content: center;
    margin: 0 auto 30px auto;
    box-shadow: var(--shadow-elevation);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    max-width: 500px;
    width: 90%;
}

#search-input {
    padding: 12px 20px;
    font-size: 1rem;
    border: none;
    flex-grow: 1;
    background-color: var(--surface-color);
    outline: none;
    transition: all 0.3s ease;
}

#search-input:focus {
    background-color: #f7f9fc;
}

.search-box button {
    min-width: unset; 
    padding: 12px 25px;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 0; 
    flex-shrink: 0;
}

.no-results {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-top: 50px;
    width: 100%;
    text-align: center;
}

.card-container {
    display: flex;
    flex-wrap: wrap;
    gap: 30px; 
    justify-content: center;
    max-width: 1200px; 
    width: 100%; 
    padding-bottom: 50px;
}
.card {
    background: var(--surface-color);
    padding: 2rem; 
    border-radius: 12px; 
    box-shadow: var(--shadow-elevation); 
    text-align: center;
    width: 90%;
    max-width: 360px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    flex: 1 1 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.card:hover {
    transform: translateY(-5px); 
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1), 0 3px 6px rgba(0, 0, 0, 0.05);
}

.app-logo {
    width: 90px; 
    height: 90px;
    object-fit: contain;
    margin-bottom: 1.5rem;
    border-radius: 50%; 
    border: 3px solid var(--background-color); 
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--text-color);
    margin: 0 0 0.5rem 0; 
}

p {
    font-size: 0.95rem; 
    color: var(--text-secondary);
    margin: 0 0 0.5rem 0; 
    width: 100%;
    word-break: break-all; 
}
p:last-of-type {
    margin-bottom: 2rem; 
}

button {
    background: var(--google-blue);
    color: var(--surface-color);
    border: none;
    padding: 0.8rem 2rem; 
    font-size: 1rem;
    font-weight: 500; 
    border-radius: 6px; 
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15); 
    transition: background 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
    text-transform: uppercase;
    letter-spacing: 0.8px; 
    min-width: 180px; 
}
button:hover {
    background: var(--google-blue-dark);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
button:active {
    transform: scale(0.98); 
}

.progress-container {
    width: 100%;
    background: #e8e8e8; 
    border-radius: 9999px;
    overflow: hidden;
    margin-top: 2rem;
    height: 10px; 
    display: none;
}
.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--google-blue);
    transition: width 0.3s ease;
    border-radius: 9999px;
}
.percent {
    margin-top: 1rem;
    font-size: 1rem; 
    color: var(--text-secondary);
    font-weight: 500;
}