body {
    background-color:   var(--background-color);   
}

h1 {
    font-size: clamp(18px, 7vw, 50px);
    text-align: center; 
}
h2 {
    font-size: clamp(12px, 4vw, 24px);
    text-align: center; 
}

.fade-out {
    opacity: 0;
    transition: opacity 0.5s ease;
}






.login-reminder {
    margin-top: 0.8rem;
    font-size: 1.1rem;
    color: #444;
    text-align: center;
}

.login-reminder a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.login-reminder a:hover {
    text-decoration: underline;
}

/* Welcome */
.welcome-section {
    padding: 8vh 20px 20px 20px;

    margin: auto;
}

@media (max-width: 768px) {
    .welcome-section h1 {
        font-size: clamp(25px, 8vw, 48px);
        text-align: left; 
    }
        .welcome-section h2 {
        margin-right:23vw;
        text-align: left; 
    }
}
.welcome-section h2 span {
    color: var(--primary-color);
}

.welcome-section p {
    max-width: 800px;
    margin: 10px auto;
}

.greeting-message {
    color: var(--secondary-color); 
    font-size: 30px; 
    font-weight: 600; 
    margin-bottom: 20px; 
    text-align: center; 
    transition: opacity 0.3s ease-in-out; 
    opacity: 1; 
}
@media (max-width: 768px) {
    .greeting-message {
        font-size: 20px; 
        font-weight: 600; 
        margin: 0; 
        text-align: left; 

    }
}



.greeting-message.hidden {
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}


.practice-section {
    display: flex;
    flex-direction : row;
    margin: auto auto 16px;
    max-width: 800px;
    padding: 16px 15px;
    gap: 3vw;
    color: #666;
}
.practice-section a {
    flex:1 1 0;
    color: inherit;          
    text-decoration: none;   
}
  
.practice-section a:hover {
    text-decoration: none;   
    color: inherit;           
}
@media (max-width: 320px) {
    .practice-section {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
}
.chart-container {
    flex:7;
    max-width: 300px;    
    margin: 0 auto;
    padding: 0;
}
.chart-container canvas {
  width: 100% !important;
  height: auto !important;
}
.practice-summary {
    flex:3;
    display: flex;
    flex-direction : column;
    justify-content: space-between;
    margin: 10px auto;
    max-width: 300px;
    gap: 2vh;
    
}

.summary-box {
    text-align: center;
    flex: 1;
    }

.summary-label {
    font-size: 12px;
    color: #555;
    letter-spacing: 1px;
}

.summary-value {
    font-size: 20px;
    font-weight: bold;
    color: #0077aa;
    margin-top: 5px;
}


.practice-message{
    display:flex; 
    align-items:center; 
    justify-content:space-between;
    gap:12px; 
    text-decoration:none; 
    color:#0077aa; 
    font-weight:600; 
    letter-spacing:.2px;
}
.practice-message:hover{ text-decoration:underline; }
.practice-message .chevron{ font-weight:700; opacity:.75; }


.practice-card{
    display:flex; 
    flex:1 1 100%;
    flex-direction: column;
    align-items:center; 
    justify-content:space-between;
    padding: 4px 5px;
    gap:4px;
    background: #ffffffcc;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
#whiteCardText{
    padding: 10px 5px;
}
.practice-right-card{
    display:flex; 
    align-items:center; 
    gap:10px;
    margin-left:auto;
}
.practice-hint-badge{
    font-size:.78rem; letter-spacing:.2px; opacity:.75;
    padding:3px 8px; border-radius:999px; border:1px solid #cfd8e3;
    background:#f8fafc; 
    white-space:nowrap;
}


/* CTA  */
.cta-section {
    background: none;
    color: var(--white);
    text-align: center;
    display: flex;
    border-radius: 5px;
    flex-direction: column;
    margin: 0 auto 16vh auto;
    padding: 0 15px;
    max-width: 800px;
    height: 15vh;
    justify-content: center;
    align-items: center;
}
.cta-container {
    background-image: linear-gradient(92.88deg, var(--primary-color) 9.16%, var(--button-hover-color) 64.72%);
    border-radius: 8px;
    border-style: none;
    box-sizing: border-box;
    color: var(--white);
    cursor: pointer;
    font-family: "Inter UI","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen,Ubuntu,Cantarell,"Open Sans","Helvetica Neue",sans-serif;
    font-size: 24px;
    font-weight: 500;
    width:100%;
    padding: 0 1.6rem;
    text-align: center;
    text-shadow: rgba(0, 0, 0, 0.25) 0 3px 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 4rem; 
    transition: all 0.2s ease-in-out;
    user-select: none;
    -webkit-user-select: none;
    touch-action: manipulation;
    background-position: left center; 
    background-size: 350% auto;
    position: relative; 
    transition: height 0.4s ease;
}





.cta-container:hover {
    background-color: var(--button-hover-color);
    box-shadow: rgba(0, 121, 107, 0.5) 0 1px 10px;
    transition-duration: 0.1s;
    background-image: linear-gradient(45deg, var(--primary-color) 0%, var(--secondary-color) 10%, var(--white) 51%, var(--secondary-color) 90%, var(--primary-color) 100%);
    background-position: right center; 
    transition: background-position 0.2s ease-in-out, box-shadow 0.3s ease;
    color: var(--white);
    box-shadow: rgba(0, 121, 107, 0.5) 0 1px 10px;
}
.cta-container:not(:hover) {
    background-image: linear-gradient(45deg, var(--primary-color) 0%, var(--secondary-color) 51%, var(--primary-color) 100%);
}
.cta-container:active {
    transform: translateY(-3px); 
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); 
    transition: transform 0.3s ease-in-out;
}
.cta-container.clicked {
    transform: translateY(-3px); 
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2); 
}
.cta-container.clicked::after {
    transform: scaleX(1.2) scaleY(1.4);
    opacity: 0; 
    transition: all 0.4s ease-in-out;
}
.cta-container::after {
    content: "";
    display: block; 
    height: 100%;
    width: 100%;
    border-radius: 8px; 
    position: absolute;
    top: 0;
    left: 0;
    z-index: -1; 
    transition: all 0.4s;
    background-color: var(--primary-color); 
    opacity: 0.5; 
}
@media (min-width: 768px) {
    .cta-container {
        padding: 0 2.6rem;
    }
}
.btn-animated.clicked {
    animation: pulse 0.4s ease;
}
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(0.96); }
    100% { transform: scale(1); }
}














/* 網頁功能介紹 */
.features-section {
    background-color: var(--white);
    padding: 20px;
    margin: 20px auto;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.features-section h3 {
    text-align: center;
    margin-bottom: 20px;
}

.features-section ul {
    list-style: none;
    padding: 0;
}

.features-section li {
    margin: 10px 0;
    font-size: 16px;
}

.features-section i {
    color: var(--primary-color);
    margin-right: 10px;
}

/* 重要資訊區域 */
.important-info-section {
    background-color: var(--input-border-color);
    padding: 20px;
    margin: 20px auto;
    border-left: 5px solid var(--primary-color);
}

.important-info-section h3 {
    margin-top: 0;
}

.important-info-section a {
    color: var(--primary-color);
    text-decoration: none;
}

.important-info-section a:hover {
    color: var(--hover-color);
    text-decoration: underline;
}

/* 使用者引導 */
.user-guide-section {
    padding: 20px;
    margin: 20px auto;
    background-color: var(--white);
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.user-guide-section h3 {
    text-align: center;
    margin-bottom: 20px;
}

.user-guide-section ol {
    padding-left: 20px;
}

.user-guide-section ol li {
    margin: 10px 0;
}

/* 使用者評論 */
.testimonials-section {
    padding: 20px;
    margin: 20px auto;
    text-align: center;
}

.testimonials-section h3 {
    margin-bottom: 20px;
}

.testimonials-section blockquote {
    background-color: var(--input-border-color);
    border-left: 5px solid var(--secondary-color);
    padding: 10px 20px;
    margin: 10px auto;
    font-style: italic;
    color: var(--text-color);
}

.testimonials-section blockquote em {
    display: block;
    margin-top: 10px;
    font-weight: bold;
    color: var(--text-color);
}

/* 輸入功能區域 */
.input-section {
    padding: 20px;
    margin: 20px auto;
    text-align: center;
}

.input-container {
    margin-top: 10px;
}

.input-container label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.input-container input {
    padding: 10px;
    font-size: 16px;
    border-radius: 5px;
    border: 1px solid var(--input-border-color);
    width: 200px;
    margin-right: 10px;
}

.input-container button {
    padding: 10px 20px;
    font-size: 16px;
    border: none;
    border-radius: 5px;
    background-color: var(--primary-color);
    color: var(--white);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.input-container button:hover {
    background-color: var(--hover-color);
}

.pill-link {
    background:#f5f7fb;
    border:1px solid #e5ecf6;
    border-radius:999px;
    padding:10px 14px;
    display:block;
    text-align:center;
    text-decoration:none;
    color:#0f4c81;
    font-weight:600;
}
.pill-link:hover { background:#eaf2fb; }
@media (prefers-color-scheme:dark) {
    .pill-link { background:#1e293b; border-color:#334155; color:#e2e8f0; }
    .pill-link:hover { background:#0f172a; }
}