/* 
 * Med o' Clock - CSS Styles
 * Comprehensive styling for medication reminder app
 */

/* ---------- ROOT VARIABLES & RESET ---------- */
:root {
    /* Color Palette */
    --primary-dark: #05386B;
    --primary: #379683;
    --primary-light: #5CDB95;
    --secondary-light: #8EE4AF;
    --background: #EDF5E1;
    
    /* Dark Mode Colors */
    --dark-bg: #121212;
    --dark-surface: #1E1E1E;
    --dark-primary: #5CDB95;
    --dark-text: #EDF5E1;
    --dark-text-secondary: #BBBBBB;
    
    /* UI Elements */
    --card-bg: #FFFFFF;
    --border-radius: 12px;
    --box-shadow: 0 4px 12px rgba(5, 56, 107, 0.1);
    --transition: all 0.3s ease;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    
    /* Status Colors */
    --success: #4CAF50;
    --warning: #FFC107;
    --error: #F44336;
    --info: #2196F3;
}

/* High Contrast Mode */
.high-contrast {
    --primary-dark: #000066;
    --primary: #0000CC;
    --primary-light: #33CC33;
    --secondary-light: #33FF33;
    --background: #FFFFFF;
    --card-bg: #F0F0F0;
    --success: #006600;
    --warning: #CC6600;
    --error: #CC0000;
    --info: #0000CC;
}

/* Dark Mode */
.dark-mode {
    --primary-dark: #5CDB95;
    --primary: #379683;
    --primary-light: #05386B;
    --secondary-light: #8EE4AF;
    --background: var(--dark-bg);
    --card-bg: var(--dark-surface);
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    color: var(--dark-text);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--background);
    color: var(--primary-dark);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    transition: var(--transition);
}

/* ---------- LAYOUT & CONTAINERS ---------- */
#app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
}

main {
    flex: 1;
    position: relative;
}

.app-screen {
    display: none;
    animation: fadeIn 0.3s ease;
}

.app-screen.active {
    display: block;
}

/* ---------- HEADER & NAVIGATION ---------- */
.logo {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: var(--font-size-xxl);
    font-weight: 700;
    background: linear-gradient(to right, var(--primary-dark), var(--primary-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin: 0;
}

.tagline {
    font-size: var(--font-size-sm);
    color: var(--primary);
    font-weight: 500;
}

nav {
    position: relative;
}

#nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

#nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--primary-dark);
    margin: 5px 0;
    transition: var(--transition);
}

.dark-mode #nav-toggle span {
    background-color: var(--dark-text);
}

#nav-menu {
    display: flex;
    list-style: none;
}

#nav-menu li {
    margin-left: var(--spacing-md);
}

.nav-btn {
    background: none;
    border: none;
    color: var(--primary-dark);
    font-size: var(--font-size-md);
    font-weight: 500;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.dark-mode .nav-btn {
    color: var(--dark-text);
}

.nav-btn:hover {
    background-color: rgba(92, 219, 149, 0.1);
}

.nav-btn.active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.dark-mode .nav-btn.active {
    background-color: var(--primary);
    color: var(--dark-bg);
}

/* ---------- DASHBOARD SCREEN ---------- */
.welcome-message {
    margin-bottom: var(--spacing-lg);
}

.welcome-message h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

#current-date {
    font-size: var(--font-size-md);
    color: var(--primary);
}

.dark-mode #current-date {
    color: var(--dark-primary);
}

.dashboard-container {
    display: flex;
    flex-direction: column;
}

.today-meds {
    margin-bottom: var(--spacing-xl);
}

.today-meds h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.dark-mode .today-meds h3 {
    color: var(--dark-primary);
}

.medication-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.empty-state {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--box-shadow);
    grid-column: 1 / -1;
}

.empty-state p {
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.dark-mode .empty-state p {
    color: var(--dark-text-secondary);
}

.medicamento-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.medicamento-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(5, 56, 107, 0.15);
}

.medicamento-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.dark-mode .medicamento-card h3 {
    color: var(--dark-primary);
}

.medicamento-card p {
    margin-bottom: var(--spacing-sm);
}

.medicamento-card .next-dose {
    font-weight: 600;
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-md);
}

.medicamento-card .next-dose strong {
    color: var(--primary);
}

.dark-mode .medicamento-card .next-dose strong {
    color: var(--dark-primary);
}

.medicamento-card .status-indicator {
    position: absolute;
    top: 0;
    right: 0;
    width: 8px;
    height: 100%;
}

.status-indicator.upcoming {
    background-color: var(--info);
}

.status-indicator.overdue {
    background-color: var(--error);
}

.status-indicator.taken {
    background-color: var(--success);
}

.status-indicator.skipped {
    background-color: var(--warning);
}

.med-actions {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-md);
}

.btn-tomado, .btn-pular {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-tomado {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    margin-right: var(--spacing-sm);
}

.btn-tomado:hover {
    background-color: var(--secondary-light);
}

.btn-pular {
    background-color: #F0F0F0;
    color: #666666;
}

.dark-mode .btn-pular {
    background-color: #333333;
    color: var(--dark-text-secondary);
}

.btn-pular:hover {
    background-color: #E0E0E0;
}

.dark-mode .btn-pular:hover {
    background-color: #444444;
}

.btn-edit {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    text-decoration: underline;
    align-self: flex-end;
}

.dark-mode .btn-edit {
    color: var(--dark-primary);
}

/* ---------- BUTTONS ---------- */
.btn-primary {
    background: linear-gradient(to right, var(--primary), var(--primary-light));
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 8px rgba(55, 150, 131, 0.2);
    align-self: center;
    margin: var(--spacing-md) 0;
}

.btn-primary:hover {
    box-shadow: 0 6px 12px rgba(55, 150, 131, 0.3);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: var(--transition);
}

.dark-mode .btn-secondary {
    color: var(--dark-primary);
    border-color: var(--dark-primary);
}

.btn-secondary:hover {
    background-color: rgba(55, 150, 131, 0.1);
}

.btn-danger {
    background-color: var(--error);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-md);
    cursor: pointer;
    transition: var(--transition);
}

.btn-danger:hover {
    background-color: #D32F2F;
}

.btn-back {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--primary-dark);
    padding: var(--spacing-sm);
    margin-right: var(--spacing-sm);
}

.dark-mode .btn-back {
    color: var(--dark-text);
}

/* ---------- MEDICATION FORM ---------- */
.screen-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.screen-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.med-form {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--primary-dark);
}

.dark-mode .form-group label {
    color: var(--dark-text);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    padding: var(--spacing-md);
    border: 1px solid #DDDDDD;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    transition: var(--transition);
}

.dark-mode .form-group input,
.dark-mode .form-group select,
.dark-mode .form-group textarea {
    background-color: var(--dark-surface);
    border-color: #444444;
    color: var(--dark-text);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 2px rgba(92, 219, 149, 0.2);
}

.frequency-options {
    display: none;
    border-left: 3px solid var(--primary-light);
    padding-left: var(--spacing-md);
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-sm);
}

.times-per-day {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.times-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid #DDDDDD;
    border-radius: var(--border-radius);
    background-color: white;
    cursor: pointer;
    transition: var(--transition);
}

.dark-mode .times-btn {
    background-color: var(--dark-surface);
    border-color: #444444;
    color: var(--dark-text);
}

.times-btn.active {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
    color: var(--primary-dark);
}

.dark-mode .times-btn.active {
    color: var(--dark-bg);
}

.weekdays-selector {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-xs);
}

.weekday {
    position: relative;
}

.weekday-checkbox {
    position: absolute;
    opacity: 0;
}

.weekday-checkbox + label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid #DDDDDD;
    cursor: pointer;
    transition: var(--transition);
}

.dark-mode .weekday-checkbox + label {
    border-color: #444444;
}

.weekday-checkbox:checked + label {
    background-color: var(--primary-light);
    border-color: var(--primary-light);
    color: var(--primary-dark);
}

.dark-mode .weekday-checkbox:checked + label {
    color: var(--dark-bg);
}

.time-slot {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.time-slot input {
    flex: 1;
}

.remove-time {
    background: none;
    border: none;
    color: var(--error);
    cursor: pointer;
    margin-left: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.notification-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.checkbox-label input {
    margin-right: var(--spacing-sm);
}

.form-actions {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-lg);
}

#delete-medication {
    display: none;
}

/* ---------- HISTORY SCREEN ---------- */
.history-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--box-shadow);
}

.filter-group {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 200px;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.history-item {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    box-shadow: var(--box-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.history-info h4 {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-xs);
}

.history-date {
    font-size: var(--font-size-sm);
    color: var(--primary);
}

.dark-mode .history-date {
    color: var(--dark-text-secondary);
}

.history-status {
    display: flex;
    align-items: center;
    font-weight: 500;
}

.status-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: var(--spacing-sm);
}

.status-taken {
    background-color: var(--success);
    color: white;
}

.status-skipped {
    background-color: var(--warning);
    color: var(--primary-dark);
}

.status-pending {
    background-color: var(--info);
    color: white;
}

.history-summary {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
}

.history-summary h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.dark-mode .history-summary h3 {
    color: var(--dark-primary);
}

.weekly-summary {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid #EEEEEE;
}

.dark-mode .summary-item {
    border-bottom-color: #333333;
}

.summary-med {
    font-weight: 500;
}

.summary-stats {
    display: flex;
    gap: var(--spacing-md);
}

.stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.stat-taken {
    color: var(--success);
}

.stat-skipped {
    color: var(--warning);
}

.stat-pending {
    color: var(--info);
}

/* ---------- SETTINGS SCREEN ---------- */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.setting-item {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.setting-info h3 {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-xs);
}

.setting-info p {
    font-size: var(--font-size-sm);
    color: var(--primary);
}

.dark-mode .setting-info p {
    color: var(--dark-text-secondary);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #CCCCCC;
    transition: var(--transition);
    border-radius: 34px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: var(--transition);
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background-color: var(--primary-light);
}

input:checked + .toggle-slider:before {
    transform: translateX(26px);
}

.time-format-selector {
    display: flex;
    border: 1px solid #DDDDDD;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.dark-mode .time-format-selector {
    border-color: #444444;
}

.format-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    background-color: white;
    cursor: pointer;
    transition: var(--transition);
    flex: 1;
}

.dark-mode .format-btn {
    background-color: var(--dark-surface);
    color: var(--dark-text);
}

.format-btn.active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.dark-mode .format-btn.active {
    color: var(--dark-bg);
}

.danger-zone {
    border-left: 3px solid var(--error);
}

.app-info {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--box-shadow);
    text-align: center;
}

.app-info h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
}

.app-info p {
    margin-bottom: var(--spacing-sm);
}

/* ---------- FOOTER ---------- */
footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    color: var(--primary);
    font-size: var(--font-size-sm);
}

.dark-mode footer {
    color: var(--dark-text-secondary);
}

footer a {
    color: var(--primary-dark);
    text-decoration: none;
    transition: var(--transition);
}

.dark-mode footer a {
    color: var(--dark-primary);
}

footer a:hover {
    text-decoration: underline;
}

/* ---------- ANIMATIONS ---------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.animate-fadeIn {
    animation: fadeIn 0.5s ease forwards;
}

.animate-slideIn {
    animation: slideIn 0.5s ease forwards;
}

/* ---------- RESPONSIVE DESIGN ---------- */
@media (max-width: 768px) {
    :root {
        --font-size-xxl: 1.75rem;
        --font-size-xl: 1.25rem;
        --font-size-lg: 1.125rem;
    }
    
    #app-container {
        padding: 0 var(--spacing-sm);
    }
    
    header {
        margin-bottom: var(--spacing-md);
    }
    
    #nav-toggle {
        display: block;
    }
    
    #nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        right: 0;
        flex-direction: column;
        background-color: var(--card-bg);
        border-radius: var(--border-radius);
        box-shadow: var(--box-shadow);
        z-index: 10;
        width: 200px;
    }
    
    #nav-menu.active {
        display: flex;
    }
    
    #nav-menu li {
        margin: 0;
    }
    
    .nav-btn {
        width: 100%;
        text-align: left;
        padding: var(--spacing-md);
    }
    
    .medication-list {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .form-actions button {
        width: 100%;
    }
    
    .history-filters {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .setting-info {
        margin-bottom: var(--spacing-md);
    }
    
    .toggle-switch, .time-format-selector {
        align-self: flex-start;
    }
}

/* ---------- ACCESSIBILITY ENHANCEMENTS ---------- */
:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.dark-mode :focus {
    outline-color: var(--dark-primary);
}

button, input, select, textarea {
    font-family: var(--font-family);
}

/* Screen reader only class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* High contrast mode enhancements */
.high-contrast button,
.high-contrast input,
.high-contrast select,
.high-contrast textarea {
    border: 2px solid black;
}

.high-contrast .btn-primary,
.high-contrast .btn-danger,
.high-contrast .btn-tomado,
.high-contrast .status-indicator,
.high-contrast .status-icon {
    border: 2px solid black;
}

.high-contrast .toggle-switch {
    border: 2px solid black;
}

.high-contrast :focus {
    outline: 3px solid black;
}