/* style.css */
:root {
    --primary-color: #6200EE;
    --primary-variant-color: #3700B3;
    --secondary-color: #03DAC6;
    --background-color: #FFFFFF;
    --surface-color: #FFFFFF;
    --error-color: #B00020;
    --on-primary-color: #FFFFFF;
    --on-secondary-color: #000000;
    --on-background-color: #000000;
    --on-surface-color: #000000;
    --text-muted-color: #6c757d;
    --glow-color: var(--secondary-color);
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --primary-color: #BB86FC;
    --primary-variant-color: #3700B3; /* Kept for consistency or can be adjusted */
    --secondary-color: #03DAC5;
    --background-color: #121212;
    --surface-color: #1E1E1E; /* Slightly lighter than background for cards */
    --error-color: #CF6679;
    --on-primary-color: #000000;
    --on-secondary-color: #000000;
    --on-background-color: #FFFFFF;
    --on-surface-color: #FFFFFF;
    --text-muted-color: #adb5bd;
    --glow-color: #03DAC5;
    --shadow-color: rgba(255, 255, 255, 0.05);
}

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    background-color: var(--background-color);
    color: var(--on-background-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

#app-container {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    max-width: 100%;
    margin: 0 auto;
    /* For mobile-app feel, remove max-width and width 100% if header/footer are fixed */
}


header {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
    padding: 1rem;
    text-align: center;
    box-shadow: 0 2px 4px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    margin: 0;
    font-size: 1.5em;
    flex-grow: 1;
    text-align: left; /* Adjusted for balance with theme switcher */
}

header #auth-links a {
    color: var(--on-primary-color);
    text-decoration: none;
    margin-left: 10px;
}

main {
    flex-grow: 1;
    padding: 1rem;
    padding-bottom: 70px; /* Space for bottom nav */
    overflow-y: auto; /* Allows content to scroll if it overflows */
}

.view {
    padding: 10px;
    animation: fadeIn 0.5s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Form Styles */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--on-surface-color);
}

.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: calc(100% - 20px);
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    background-color: var(--surface-color);
    color: var(--on-surface-color);
    box-sizing: border-box;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(var(--primary-color-rgb, 98, 0, 238), 0.25); /* Needs JS to set --primary-color-rgb or use a fixed one */
}
body.dark-mode .form-group input:focus, 
body.dark-mode .form-group select:focus,
body.dark-mode .form-group textarea:focus {
     box-shadow: 0 0 5px var(--glow-color);
}


.btn {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
    text-transform: uppercase;
}

.btn:hover {
    background-color: var(--primary-variant-color);
    box-shadow: 0 2px 5px var(--shadow-color);
}
body.dark-mode .btn:hover {
    box-shadow: 0 0 8px var(--glow-color);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--on-secondary-color);
}
.btn-secondary:hover {
    opacity: 0.9;
}
body.dark-mode .btn-secondary:hover {
    box-shadow: 0 0 8px var(--primary-color);
}


/* Card Styles */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}
.card {
    background-color: var(--surface-color);
    color: var(--on-surface-color);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px var(--shadow-color);
}
body.dark-mode .card {
    border: 1px solid rgba(255,255,255,0.1);
}
body.dark-mode .card:hover {
     box-shadow: 0 0 10px -2px var(--glow-color);
}

.card h3 {
    margin-top: 0;
    color: var(--primary-color);
}
.card p {
    font-size: 0.9em;
    margin-bottom: 0.5rem;
}
.card small {
    color: var(--text-muted-color);
}

/* Tabs */
.tabs {
    display: flex;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--shadow-color);
}
.tab-link {
    padding: 10px 15px;
    cursor: pointer;
    border: none;
    background-color: transparent;
    color: var(--on-surface-color);
    font-size: 1em;
    opacity: 0.7;
}
.tab-link.active {
    border-bottom: 2px solid var(--primary-color);
    opacity: 1;
    font-weight: bold;
    color: var(--primary-color);
}
.tab-content {
    display: none;
    animation: fadeIn 0.3s;
}
.tab-content.active {
    display: block;
}

/* Bottom Navigation */
#bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--surface-color);
    box-shadow: 0 -2px 5px var(--shadow-color);
    display: flex;
    justify-content: space-around;
    padding: 5px 0;
    z-index: 1000;
}
#bottom-nav .nav-item {
    background: none;
    border: none;
    color: var(--on-surface-color);
    opacity: 0.7;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 5px 10px;
    cursor: pointer;
    font-size: 0.8em;
}
#bottom-nav .nav-item .material-icons {
    font-size: 24px; /* Material Icons default size */
    margin-bottom: 2px;
}
#bottom-nav .nav-item.active {
    color: var(--primary-color);
    opacity: 1;
}
body.dark-mode #bottom-nav .nav-item.active {
    text-shadow: 0 0 5px var(--glow-color);
}


/* Theme Switcher */
.theme-switcher {
    display: flex;
    align-items: center;
    margin-left: auto; /* Pushes to the right */
}
.theme-switcher .material-icons {
    margin-right: 8px;
    cursor: default; /* If the icon itself is not clickable */
}
.switch {
    position: relative;
    display: inline-block;
    width: 50px; /* Adjusted width */
    height: 24px; /* Adjusted height */
}
.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
}
.slider:before {
    position: absolute;
    content: "";
    height: 18px; /* Adjusted size */
    width: 18px;  /* Adjusted size */
    left: 3px;    /* Adjusted position */
    bottom: 3px;  /* Adjusted position */
    background-color: white;
    transition: .4s;
}
input:checked + .slider {
    background-color: var(--secondary-color);
}
input:focus + .slider {
    box-shadow: 0 0 1px var(--secondary-color);
}
body.dark-mode input:focus + .slider {
     box-shadow: 0 0 5px var(--glow-color);
}
input:checked + .slider:before {
    transform: translateX(26px); /* Adjusted transform distance */
}
.slider.round {
    border-radius: 24px; /* Adjusted for new height */
}
.slider.round:before {
    border-radius: 50%;
}

/* Modal */
.modal {
    display: none; 
    position: fixed; 
    z-index: 1001; 
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto; 
    background-color: rgba(0,0,0,0.4);
    animation: fadeInModal 0.3s;
}
@keyframes fadeInModal { from {opacity: 0;} to {opacity: 1;} }

.modal-content {
    background-color: var(--surface-color);
    color: var(--on-surface-color);
    margin: 15% auto; 
    padding: 20px;
    border: 1px solid #888;
    border-radius: 8px;
    width: 80%;
    max-width: 500px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    position: relative;
    animation: slideInModal 0.3s;
}
@keyframes slideInModal { from {transform: translateY(-50px); opacity: 0;} to {transform: translateY(0); opacity: 1;} }


.close-button {
    color: var(--text-muted-color);
    float: right;
    font-size: 28px;
    font-weight: bold;
}
.close-button:hover,
.close-button:focus {
    color: var(--on-surface-color);
    text-decoration: none;
    cursor: pointer;
}

/* Helper classes */
.text-danger { color: var(--error-color); }
.text-success { color: var(--secondary-color); } /* Or a dedicated success color */
.mt-1 { margin-top: 1rem; }

/* Spinner */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}
.spinner {
    border: 5px solid var(--surface-color); /* Light grey */
    border-top: 5px solid var(--primary-color); /* Blue */
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}
body.dark-mode .spinner {
    border: 5px solid var(--surface-color);
    border-top: 5px solid var(--glow-color);
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Messages */
.toast {
    visibility: hidden;
    min-width: 250px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 4px;
    padding: 16px;
    position: fixed;
    z-index: 10000;
    left: 50%;
    bottom: 30px;
    transform: translateX(-50%);
    font-size: 17px;
    opacity: 0;
    transition: opacity 0.5s, visibility 0.5s, bottom 0.5s;
}
.toast.show {
    visibility: visible;
    opacity: 1;
    bottom: 50px; /* Slide up */
}
.toast.success { background-color: var(--secondary-color); color: var(--on-secondary-color); }
.toast.error { background-color: var(--error-color); color: var(--on-primary-color); } /* Assuming error on primary is white */

body.dark-mode .toast.success { background-color: var(--secondary-color); color: var(--on-secondary-color); }
body.dark-mode .toast.error { background-color: var(--error-color); color: var(--on-primary-color); }


/* Responsive adjustments */
@media (min-width: 768px) {
    #app-container {
        max-width: 960px; /* Or your preferred desktop width */
    }
    main {
        padding-bottom: 1rem; /* No bottom nav on desktop typically */
    }
    #bottom-nav {
        display: none; /* Hide bottom nav on larger screens */
    }
    /* Could add a sidebar nav for desktop here */
}