/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(203, 213, 225, 0.5); /* subtle border */
    padding: 1rem 0;
    transition: all var(--transition-normal);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand a {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.025em;
}

.navbar-nav {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

.nav-link {
    color: var(--color-text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    position: relative;
    padding-bottom: 0.25rem;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width var(--transition-fast);
    border-radius: 2px;
}

.nav-link:hover {
    color: var(--color-text-main);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--color-primary);
}

.navbar-icons {
    display: flex;
    gap: 1.25rem;
    font-size: 1.25rem;
    color: var(--color-text-muted);
}

.navbar-icons i {
    cursor: pointer;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.navbar-icons i:hover {
    color: var(--color-primary);
    transform: scale(1.1);
}

/* Cards */
.card {
    background-color: var(--color-background);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 2.5rem;
    border: 1px solid rgba(203, 213, 225, 0.4);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* Hero Section */
.hero {
    display: flex;
    align-items: center;
    gap: 4rem;
    background: linear-gradient(120deg, var(--color-secondary) 0%, rgba(248, 250, 252, 0.4) 100%);
    position: relative;
    overflow: hidden;
}

/* Decorative background element */
.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -5%;
    width: 40%;
    height: 80%;
    background: radial-gradient(circle, rgba(129, 140, 248, 0.15) 0%, rgba(255,255,255,0) 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    flex: 1.2;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--color-text-main) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.15;
}

.hero p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
    max-width: 600px;
    line-height: 1.8;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    z-index: 1;
    position: relative;
}

.hero-image::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 10%;
    width: 80%;
    height: 40px;
    background: rgba(79, 70, 229, 0.15);
    filter: blur(20px);
    border-radius: 50%;
    z-index: -1;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    object-fit: cover;
}

/* Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin: 2rem 0;
}

.feature-card {
    text-align: left;
    padding: 2.5rem;
    background: linear-gradient(145deg, #ffffff, var(--color-surface));
    border: none;
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-lg);
    background: rgba(79, 70, 229, 0.1);
    font-size: 1.75rem;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

/* Generator Layout */
.generator-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 3rem;
    margin-top: 1rem;
    align-items: start;
}

.sidebar {
    background: var(--color-background);
    padding: 2rem;
    border-radius: var(--radius-xl);
    border: 1px solid rgba(203, 213, 225, 0.4);
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 100px;
}

.sidebar h3 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--color-text-main);
}

.form-group {
    margin-bottom: 1.5rem;
}

.main-area {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Result Card */
.result-card {
    text-align: center;
    padding: 4rem 3rem;
    background: linear-gradient(135deg, var(--color-background), var(--color-surface));
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 2rem;
    font-size: 8rem;
    color: rgba(79, 70, 229, 0.05);
    font-family: serif;
    line-height: 1;
}

.badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background-color: rgba(244, 63, 94, 0.1); /* Rose tint */
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 2rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.pantun-text {
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.8;
    color: var(--color-text-main);
    margin-bottom: 2rem;
    white-space: pre-line;
    position: relative;
    z-index: 1;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 2rem;
}

.metric-card {
    text-align: center;
    padding: 2rem;
    background: var(--color-background);
    border: 1px solid rgba(203, 213, 225, 0.4);
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.05em;
}

.metric-label {
    color: var(--color-text-muted);
    font-size: 1rem;
    font-weight: 500;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Spinner */
.spinner {
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top: 3px solid white;
    width: 20px;
    height: 20px;
    -webkit-animation: spin 1s linear infinite; /* Safari */
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 0.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hidden {
    display: none !important;
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.toast {
    background-color: var(--color-text-main);
    color: white;
    padding: 1.25rem 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 992px) {
    .generator-layout {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
}

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 4rem 5vw;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        margin: 0 auto 2.5rem;
    }
    
    .navbar-nav {
        display: none;
    }
    
    .pantun-text {
        font-size: 1.25rem;
    }
}