/* Global Reset and Colors */
:root {
    --bg-main: #0f172a;
    --bg-card: #1e293b;
    --accent-blue: #3b82f6;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    margin: 0;
    padding: 0;
}

/* Header Navigation Styling */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background-color: rgba(15, 23, 42, 0.8);
    position: fixed;
    top: 0;
    width: calc(100% - 80px);
    z-index: 100;
}

.logo {
    font-size: 22px;
    font-weight: 800;
    color: var(--text-main);
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin-right: 25px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.login-btn {
    background: transparent;
    border: 1px solid var(--accent-blue);
    color: var(--text-main);
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 20px;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 56px;
    margin-bottom: 20px;
}

.highlight {
    color: var(--accent-blue);
}

.hero p {
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.6;
    margin-bottom: 40px;
}

.cta-btn, .buy-btn {
    background-color: var(--accent-blue);
    color: white;
    padding: 15px 35px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
}

/* Secondary Sections */
.about-section, .pricing-section {
    padding: 100px 20px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.about-section p {
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1.8;
}

/* Pricing Layout */
.pricing-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 50px 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    max-width: 500px;
    margin: 0 auto;
}

.price {
    font-size: 48px;
    font-weight: 800;
    margin: 20px 0;
}

.price span {
    font-size: 18px;
    color: var(--text-muted);
}

.features {
    list-style: none;
    padding: 0;
    text-align: left;
    margin: 30px auto;
    max-width: 350px;
}

.features li {
    margin-bottom: 15px;
    font-size: 15px;
}

.buy-btn {
    width: 100%;
}

/* Footer Section */
.footer {
    text-align: center;
    padding: 40px;
    border-top: 1px solid #1e293b;
    color: var(--text-muted);
}

.footer a {
    color: var(--accent-blue);
}

/* Custom App Notification System UI Styling */
.app-toast {
    background-color: var(--bg-card);
    border-left: 4px solid var(--accent-blue);
    color: var(--text-main);
    padding: 16px 24px;
    border-radius: 6px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
    font-size: 14px;
    font-weight: 500;
    min-width: 280px;
    max-width: 400px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 15px;
    pointer-events: auto;
    animation: slideInToast 0.3s ease-out forwards;
    transition: all 0.3s ease-in-out;
    flex-direction: column;
}

.app-toast.toast-error {
    border-left-color: #ef4444; /* Dark Red border for failure loops */
}

.app-toast.toast-success {
    border-left-color: #10b981; /* Emerald green border for completions */
}

@keyframes slideInToast {
    from { transform: translateX(120%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fadeOutToast {
    to { transform: translateY(10px); opacity: 0; }
}