@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@200;300;400;500;600;700;800&display=swap');

:root{
    --color-text: #2c3e50;
    --color-text-light: #7f8c8d;
    --color-primary: #0066ff;
    --color-primary-dark: #0052cc;
    --color-primary-light: #0066ff30;
    --color-danger: #e74c3c;
    --color-success: #2ecc71;
    --color-bg: #f8f9fa;
    --color-card: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"]{
    --color-text: #ecf0f1;
    --color-text-light: #95a5a6;
    --color-primary: #3498db;
    --color-primary-dark: #2980b9;
    --color-primary-light: #3498db30;
    --color-danger: #e74c3c;
    --color-success: #2ecc71;
    --color-bg: #1a1a1a;
    --color-card: #2c2c2c;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

*{
    box-sizing: border-box;
}

body{
    margin: 0;
    background-color: var(--color-bg);
    font-family: 'Poppins', sans-serif;
    color: var(--color-text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.theme-toggle{
    position: fixed;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-card);
    border: 2px solid var(--color-primary-light);
    color: var(--color-primary);
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    z-index: 1000;
}

.theme-toggle:hover{
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-lg);
    background-color: var(--color-primary);
    color: var(--color-card);
}

.theme-toggle:active{
    transform: scale(0.95);
}

.container{
    max-width: 600px;
    min-height: 90vh;
    width: 90%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem 0;
}

.logo-header{
    text-align: center;
    margin-bottom: 2rem;
}

.logo{
    font-size: 3.5rem;
    font-weight: 800;
    margin: 0;
    color: var(--color-primary);
    letter-spacing: -2px;
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.05);
}

.tagline{
    font-size: 1rem;
    color: var(--color-text-light);
    margin: 0.5rem 0 0 0;
    font-weight: 400;
}

.card{
    width: 100%;
    background-color: var(--color-card);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-primary-light);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.card h2{
    color: var(--color-text);
    font-weight: 500;
    font-size: 1.2rem;
    margin-top: 0;
    margin-bottom: 1.5rem;
}

.card h2 b{
    color: var(--color-primary);
    font-weight: 600;
}

form{
    display: flex;
    gap: 10px;
    margin-bottom: 1.5rem;
}

form input[type="url"]{
    flex: 1;
    padding: 0.9rem 1.2rem;
    border-radius: 12px;
    border: 2px solid var(--color-primary-light);
    background-color: var(--color-bg);
    color: var(--color-text);
    outline: none;
    font-weight: 400;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

form input[type="url"]:focus{
    border-color: var(--color-primary);
    background-color: var(--color-card);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

form input[type="url"]::placeholder{
    color: var(--color-text-light);
}

.btn-submit{
    background-color: var(--color-primary);
    border: none;
    border-radius: 12px;
    font-weight: 600;
    color: var(--color-card);
    cursor: pointer;
    padding: 0.9rem 2rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-submit:hover:not(:disabled){
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn-submit:active:not(:disabled){
    transform: translateY(0);
}

.btn-submit:disabled{
    background-color: var(--color-primary-light);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn{
    display: block;
    margin-bottom: 1rem;
    padding: 0.8rem 1.5rem;
    background-color: var(--color-primary);
    color: var(--color-card);
    border-radius: 12px;
    text-decoration: none;
    text-align: center;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-family: 'Poppins', sans-serif;
}

.btn:hover{
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.btn:active{
    transform: translateY(0);
}

.btn i{
    margin-right: 0.5rem;
}

.download-btn{
    width: 100%;
}

.content{
    width: 100%;
    border-radius: 16px;
    min-height: 300px;
    background-color: var(--color-bg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    border: 2px dashed var(--color-primary-light);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.content ol{
    color: var(--color-text-light);
    line-height: 1.8;
    padding-left: 1.5rem;
}

.content ol li{
    margin-bottom: 0.5rem;
}

.content ol b{
    color: var(--color-primary);
    font-weight: 600;
}

.examples{
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px dashed var(--color-primary-light);
    text-align: center;
}

.examples p{
    margin: 0 0 0.5rem 0;
    color: var(--color-text-light);
    font-size: 0.85rem;
}

.examples code{
    display: inline-block;
    background-color: var(--color-card);
    color: var(--color-primary);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.75rem;
    margin: 0.2rem 0;
    border: 1px solid var(--color-primary-light);
    font-family: 'Courier New', monospace;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .examples code{
    background-color: var(--color-bg);
}

.content video{
    width: 100%;
    max-width: 350px;
    border-radius: 16px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--color-card);
}

.content img{
    width: 60px;
    height: 60px;
}

footer{
    margin-top: 3rem;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.footer-content{
    text-align: center;
}

.footer-text{
    color: var(--color-text-light);
    font-weight: 400;
    font-size: 0.9rem;
    margin: 0 0 0.3rem 0;
}

.footer-text b{
    font-weight: 600;
    color: var(--color-primary);
}

.version{
    margin: 0 0 0.8rem 0;
    font-size: 0.75rem;
    color: var(--color-text-light);
    opacity: 0.7;
}

.github-link{
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.github-link:hover{
    background-color: var(--color-bg);
    color: var(--color-primary);
}

.github-link i{
    font-size: 1.2rem;
}

.messageError{
    color: var(--color-danger);
    font-weight: 500;
    text-align: center;
}

.error-message{
    text-align: center;
    color: var(--color-text);
}

.error-message i{
    font-size: 4rem;
    color: var(--color-danger);
    margin-bottom: 1rem;
}

.error-message h3{
    color: var(--color-text);
    margin: 0.5rem 0;
    font-weight: 600;
}

.error-message p{
    color: var(--color-text-light);
    margin: 0.5rem 0;
    font-size: 0.9rem;
}

.btn i{
    margin-right: 0.5rem;
}

/* Toast Notifications */
.toast-container{
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast{
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--color-card);
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-left: 4px solid var(--color-primary);
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s ease;
    min-width: 300px;
}

.toast-show{
    opacity: 1;
    transform: translateX(0);
}

.toast-icon{
    font-size: 24px;
    flex-shrink: 0;
}

.toast-message{
    flex: 1;
    color: var(--color-text);
    font-size: 0.9rem;
    line-height: 1.4;
}

.toast-close{
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    font-size: 20px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.toast-close:hover{
    color: var(--color-text);
}

.toast-success{
    border-left-color: var(--color-success);
}

.toast-success .toast-icon{
    color: var(--color-success);
}

.toast-error{
    border-left-color: var(--color-danger);
}

.toast-error .toast-icon{
    color: var(--color-danger);
}

.toast-warning{
    border-left-color: #f39c12;
}

.toast-warning .toast-icon{
    color: #f39c12;
}

.toast-info{
    border-left-color: var(--color-primary);
}

.toast-info .toast-icon{
    color: var(--color-primary);
}

@media screen and (max-width: 600px) {
    .logo{
        font-size: 2.5rem;
    }
    
    .card{
        padding: 1.5rem;
    }
    
    form{
        flex-direction: column;
    }
    
    .btn-submit{
        width: 100%;
    }
    
    .content{
        padding: 1.5rem;
    }
    
    .theme-toggle{
        top: 10px;
        right: 10px;
        width: 45px;
        height: 45px;
        font-size: 20px;
    }
    
    .toast-container{
        top: 70px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
    
    .toast{
        min-width: auto;
    }
}