/* Basic Reset & Defaults */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Light Theme Variables */
    --bg-color: #f8f9fa;
    --text-color: #333;
    --container-bg-color: #ffffff;
    --container-shadow-color: rgba(0, 0, 0, 0.08);
    --header-text-color: #212529;
    --subtle-text-color: #495057;
    --separator-color: #e9ecef;
    --link-color: #007bff;
    --link-hover-color: #0056b3;
    --button-gradient-start: #007bff;
    --button-gradient-end: #0056b3;
    --button-text-color: #ffffff;
    --button-shadow-color: rgba(0, 123, 255, 0.3);
    --button-hover-shadow-color: rgba(0, 123, 255, 0.4);
    --not-available-color: #dc3545;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --theme-toggle-bg: #e9ecef;
    --theme-toggle-text: #333;
    --theme-toggle-hover-bg: #d3d9df;
}

html[data-theme="dark"] {
    /* Dark Theme Variables */
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --container-bg-color: #1e1e1e;
    --container-shadow-color: rgba(255, 255, 255, 0.05);
    --header-text-color: #f8f9fa;
    --subtle-text-color: #b0b0b0;
    --separator-color: #3a3a3a;
    --link-color: #58a6ff;
    --link-hover-color: #80baff;
    --button-gradient-start: #58a6ff;
    --button-gradient-end: #388bfd;
    --button-text-color: #ffffff;
    --button-shadow-color: rgba(88, 166, 255, 0.2);
    --button-hover-shadow-color: rgba(88, 166, 255, 0.3);
    --not-available-color: #ff7b72;
    --success-color: #27ae60;
    --error-color: #c0392b;
    --theme-toggle-bg: #3a3a3a;
    --theme-toggle-text: #e0e0e0;
    --theme-toggle-hover-bg: #4f4f4f;
}

html {
    font-size: 16px; /* Base font size */
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column; /* Allow header/footer separation for theme toggle */
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme Toggle Button */
.theme-toggle-button {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--theme-toggle-bg);
    color: var(--theme-toggle-text);
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
    z-index: 1000;
}

.theme-toggle-button:hover {
    background-color: var(--theme-toggle-hover-bg);
    transform: translateY(-1px);
}


/* Main Container */
.container {
    background-color: var(--container-bg-color);
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--container-shadow-color);
    max-width: 600px;
    width: 100%;
    text-align: center;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

/* Header */
header {
    margin-bottom: 30px;
    display: flex; /* For logo and title alignment */
    flex-direction: column;
    align-items: center;
}

.logo {
    max-width: 100px; /* Adjust as needed */
    height: auto;
    margin-bottom: 15px;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--header-text-color);
    transition: color 0.3s ease;
}

/* Main Content */
main p {
    font-size: 1rem;
    color: var(--subtle-text-color);
    margin-bottom: 15px;
    transition: color 0.3s ease;
}

.beta-notice {
    font-weight: 600;
    color: var(--link-color); /* Use link color for beta notice */
    font-size: 1.1rem;
}

/* Sections */
.download-section, .feedback-section {
    margin-top: 35px;
    padding-top: 25px;
    border-top: 1px solid var(--separator-color); /* Subtle separator */
    transition: border-color 0.3s ease;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--header-text-color); /* Same as h1 or slightly less prominent */
    margin-bottom: 20px;
    transition: color 0.3s ease;
}

/* Download Button & Generic Button Styling */
.download-button, .action-button {
    display: inline-block;
    background: linear-gradient(135deg, var(--button-gradient-start) 0%, var(--button-gradient-end) 100%);
    color: var(--button-text-color);
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.3s ease;
    box-shadow: 0 2px 5px var(--button-shadow-color);
    border: none;
    cursor: pointer;
}

.download-button:hover, .action-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--button-hover-shadow-color);
}

.action-button-secondary {
    background: var(--theme-toggle-bg);
    color: var(--text-color);
    padding: 8px 18px;
    font-size: 0.95rem;
    box-shadow: 0 2px 5px var(--container-shadow-color);
}

.action-button-secondary:hover {
    background: var(--theme-toggle-hover-bg);
    color: var(--link-hover-color);
    box-shadow: 0 3px 8px var(--container-shadow-color);
}

.url-display {
    margin-top: 15px;
    font-size: 0.9rem;
    color: var(--subtle-text-color);
    word-break: break-all; /* Prevent long URLs from breaking layout */
}

.url-display a {
    color: var(--link-color);
    text-decoration: none;
}

.url-display a:hover {
    text-decoration: underline;
    color: var(--link-hover-color);
}

.not-available {
    font-style: italic;
    color: var(--not-available-color);
}

/* Links */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    text-decoration: underline;
    color: var(--link-hover-color);
}

/* Footer */
footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--separator-color);
    font-size: 0.85rem;
    color: var(--subtle-text-color);
    transition: border-color 0.3s ease, color 0.3s ease;
}

/* Form Styling for Password Reset */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--subtle-text-color);
}
.form-group input {
    width: 100%;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid var(--separator-color);
    background-color: var(--bg-color);
    color: var(--text-color);
    font-size: 1rem;
}

/* Result Message Styling */
.result-message {
    font-weight: bold;
}
.result-success {
    color: var(--success-color);
}
.result-failure {
    color: var(--error-color);
}
.action-button.u-margin-top-20 {
    margin-top: 20px;
}

/* Google Play Badge Styling */
.play-store-badge {
    display: inline-block;
    margin-top: 1rem;
}
.play-store-badge img {
    height: 7rem; /* A standard, more proportional height for the badge. */
    width: auto;  /* Allow width to scale automatically. */
}


/* Responsive Adjustments */
@media (max-width: 600px) {
    body {
        padding: 15px;
        padding-top: 70px; /* Add padding to prevent overlap with fixed theme toggle */
    }
    .theme-toggle-button {
        top: 10px;
        right: 10px;
        padding: 8px 12px;
    }
    .container {
        padding: 25px 20px;
    }
    header h1 {
        font-size: 1.8rem;
    }
    .logo {
        max-width: 120px;
    }
    h2 {
        font-size: 1.3rem;
    }
    .download-button, .action-button {
        padding: 10px 20px;
        font-size: 1rem;
    }
}