/* Apple-Inspired Design System */
:root {
    /* Colors */
    --color-primary: #007aff;
    --color-primary-light: rgba(0, 122, 255, 0.1);
    --color-primary-border: rgba(0, 122, 255, 0.2);
    --color-primary-focus: rgba(0, 122, 255, 0.1);
    
    --color-text: #1d1d1f;
    --color-text-secondary: #495057;
    --color-background: #fbfbfd;
    --color-surface: #ffffff;
    --color-surface-secondary: #f5f5f7;
    --color-surface-tertiary: #fafafa;
    --color-border: rgba(0, 0, 0, 0.1);
    --color-border-light: rgba(0, 0, 0, 0.05);
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 20px;
    --spacing-xl: 24px;
    --spacing-2xl: 32px;
    --spacing-3xl: 40px;
    --spacing-4xl: 48px;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Transitions */
    --transition-fast: all 0.2s ease;
    --transition-smooth: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

* {
    box-sizing: border-box;
}

html {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-text);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    margin: 0;
    background: var(--color-background);
    min-height: 100vh;
}

/* Utility Classes */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 0.5px solid var(--color-border);
}

.input-base {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 15px;
    transition: var(--transition-fast);
}

.input-base:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-focus);
}

/* Navigation */
nav {
    display: flex;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 0.5px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0 var(--spacing-2xl);
}

nav div {
    padding: var(--spacing-lg) var(--spacing-xl);
    cursor: pointer;
    color: var(--color-text);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition-smooth);
    position: relative;
    border-bottom: 2px solid transparent;
}

nav div:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

nav div.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    background: var(--color-primary-light);
}

/* Logout tab styling */
nav .logout-tab {
    margin-left: auto;
    color: #dc3545;
    border-left: 1px solid var(--color-border);
}

nav .logout-tab:hover {
    background: #f8d7da;
    color: #c82333;
}

/* Tables */
table {
    border-spacing: 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
    margin: var(--spacing-2xl) 0;
    border: 0.5px solid var(--color-border);
}

table thead td {
    font-weight: 600;
    background: var(--color-surface-secondary);
    color: var(--color-text);
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 0.5px solid var(--color-border);
}

table td {
    border: none;
    border-bottom: 0.5px solid var(--color-border-light);
    padding: var(--spacing-lg) var(--spacing-xl);
    transition: background-color 0.2s ease;
}

table tbody tr:last-child td {
    border-bottom: none;
}

table tbody tr:hover td {
    background-color: var(--color-surface-secondary);
}

table tfoot {
    background: var(--color-surface-secondary);
    font-weight: 600;
    color: var(--color-text);
    border-top: 0.5px solid var(--color-border);
}

/* Table alignment utilities - simplified */
[class*="table-align-right-"] td:nth-child(1),
[class*="table-align-right-"] td:nth-child(2),
[class*="table-align-right-"] td:nth-child(3),
[class*="table-align-right-"] td:nth-child(4),
[class*="table-align-right-"] td:nth-child(5),
[class*="table-align-right-"] td:nth-child(6),
[class*="table-align-right-"] td:nth-child(7),
[class*="table-align-right-"] td:nth-child(8),
[class*="table-align-right-"] td:nth-child(9) {
    text-align: right;
}

/* Modal */
#split-activity {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
}

#split-inner {
    width: 480px;
    max-width: 90%;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    border: 0.5px solid var(--color-border);
    animation: modalSlideIn 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

#cancel-split {
    float: right;
    background: var(--color-surface-secondary);
    color: var(--color-text);
    border: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    transition: var(--transition-fast);
}

#cancel-split:hover {
    background: #e5e5e7;
    transform: translateY(-1px);
}

/* Containers */
#home-page-container,
#getting-started-container {
    padding: 0 var(--spacing-4xl) var(--spacing-4xl) var(--spacing-4xl);
    max-width: 1200px;
    margin: 0 auto;
}

/* Time Table Grid */
#time-table {
    display: grid;
    width: 100%;
    gap: 1px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 0.5px solid var(--color-border);
}

#time-table .droppable.highlight {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-border);
}

#time-table > div {
    background: var(--color-surface);
    padding: var(--spacing-xl);
    transition: var(--transition-fast);
}

#time-table > div:hover {
    background: var(--color-surface-secondary);
}

#time-table > div.left,
#time-table > div.top {
    background: var(--color-surface-secondary);
    color: var(--color-text);
    font-weight: 600;
    padding: var(--spacing-xl);
}

#time-table > div.top {
    position: sticky;
    top: 0;
    z-index: 10;
    border-bottom: 0.5px solid var(--color-border);
}

#time-table > div.left {
    border-right: 0.5px solid var(--color-border);
}

#time-table > div:not(.top) {
    min-height: 20rem;
}

#time-table > div.right {
    padding: var(--spacing-xl);
    background: var(--color-surface-tertiary);
    border-left: 0.5px solid var(--color-border);
}

/* Activity Styling */
.activity-container {
    border-radius: var(--radius-lg);
    margin: var(--spacing-sm) 0;
    transition: var(--transition-fast);
}

.activity-container.active {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-border);
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-lg);
}

.activity-container:not(.active) {
    text-decoration: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    color: var(--color-primary);
}

.activity-container:not(.active):hover {
    background: var(--color-primary-light);
    transform: translateX(4px);
}

.activity-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.activity-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 15px;
    transition: var(--transition-fast);
    background: var(--color-surface);
}

.activity-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-focus);
}

.hours-input {
    text-align: right;
}

.hours-input,
.minutes-input {
    width: 60px;
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    font-size: 15px;
    transition: var(--transition-fast);
    background: var(--color-surface);
}

.hours-input:focus,
.minutes-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-focus);
}

.activity-add {
    display: flex;
    padding: var(--spacing-2xl);
    justify-content: center;
}

/* Form Inputs */
input[type=text] {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 15px;
    transition: var(--transition-fast);
}

input[type=text]:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-focus);
}

/* Joy Factor & Hourly Value - consolidated */
#joy-factor,
#hourly-value {
    display: grid;
    gap: var(--spacing-xl);
    padding: var(--spacing-2xl);
}

#joy-factor .droppable.highlight,
#hourly-value .droppable.highlight {
    background: var(--color-primary-light);
    border: 1px solid var(--color-primary-border);
}

#joy-factor .joy-heading,
#hourly-value .hourly-heading {
    font-weight: 600;
    color: var(--color-text);
    font-size: 20px;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

#joy-factor > div,
#hourly-value > div {
    border: 0.5px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    transition: var(--transition-fast);
}

#joy-factor > div:hover,
#hourly-value > div:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

#joy-factor > div > div,
#hourly-value > div > div {
    margin: var(--spacing-sm);
    background: var(--color-surface-secondary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
}

#result-slider-grid {
    display: grid;
    margin: var(--spacing-2xl);
    gap: var(--spacing-2xl);
}

/* Range Input Styling */
input[type=range] {
    appearance: none;
    background: #e5e5e7;
    border-radius: var(--radius-sm);
    height: 6px;
    outline: none;
}

input[type=range]::-webkit-slider-thumb,
input[type=range]::-moz-range-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 24px;
    height: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
    transition: var(--transition-fast);
}

input[type=range]::-webkit-slider-thumb:hover,
input[type=range]::-moz-range-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

/* Report Section */
@media screen {
    #logo {
        display: none;
    }
}

#logo {
    text-align: center;
    padding-bottom: var(--spacing-2xl);
}

#logo img {
    width: 400px;
    filter: drop-shadow(0 4px 16px rgba(0, 0, 0, 0.1));
}

#report-container {
    padding: var(--spacing-3xl);
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 0.5px solid var(--color-border);
    margin: var(--spacing-2xl);
}

/* Print Styles */
@media print {
    nav,
    button,
    input[type=button] {
        display: none !important;
    }
    body {
        background: white !important;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        padding: 0 var(--spacing-md);
        flex-direction: column;
    }
    
    nav div {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    #home-page-container,
    #getting-started-container {
        padding: 0 var(--spacing-xl) var(--spacing-xl) var(--spacing-xl);
    }
    
    #split-inner {
        width: 95%;
        padding: var(--spacing-xl);
    }
    
    #time-table > div {
        padding: var(--spacing-lg);
    }
    
    #time-table > div:not(.top) {
        min-height: 16rem;
    }
    
    #report-container {
        margin: var(--spacing-md);
        padding: var(--spacing-xl);
    }
}

/* Time Study Links - Apple-style card links */
.time-study-link {
    text-decoration: none;
    color: inherit;
    display: block;
    transition: var(--transition-smooth);
    margin: var(--spacing-sm) 0;
}

.time-study-link:hover {
    transform: translateY(-2px);
}

.time-study-link:focus {
    outline: none;
}

.time-study-link:focus .time-study-card {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.time-study-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.time-study-link:hover .time-study-card {
    border-color: var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.time-study-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.time-study-link:hover .time-study-card::before {
    transform: scaleX(1);
}

.time-study-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 var(--spacing-sm) 0;
    line-height: 1.3;
}

.time-study-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    font-size: 14px;
    color: var(--color-text-secondary);
}

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

.time-study-duration {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
}

.time-study-arrow {
    position: absolute;
    right: var(--spacing-xl);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-secondary);
    font-size: 16px;
    transition: var(--transition-smooth);
    opacity: 0.6;
}

.time-study-link:hover .time-study-arrow {
    opacity: 1;
    transform: translateY(-50%) translateX(4px);
    color: var(--color-primary);
}

/* Time Study Grid Layout */
.time-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-2xl) 0;
}

.time-studies-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-2xl) 0;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .time-studies-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .time-study-card {
        padding: var(--spacing-lg);
    }
    
    .time-study-arrow {
        right: var(--spacing-lg);
    }
}

/* Action Plan Container Styling */
#action-plan-container {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-3xl);
    margin: var(--spacing-2xl);
    box-shadow: var(--shadow-sm);
    border: 0.5px solid var(--color-border);
}

#action-plan-container h2 {
    color: var(--color-text);
    font-size: 28px;
    font-weight: 600;
    margin: 0 0 var(--spacing-2xl) 0;
    line-height: 1.3;
    letter-spacing: -0.5px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    #action-plan-container {
        margin: var(--spacing-md);
        padding: var(--spacing-xl);
    }
    
    #action-plan-container h2 {
        font-size: 24px;
        margin-bottom: var(--spacing-lg);
    }
}

/* Button Styling */
button {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
    font-family: inherit;
    outline: none;
}

button:hover {
    background: var(--color-surface-secondary);
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

button:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-focus);
}

/* Primary button variant */
button.btn-primary {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
    box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

button.btn-primary:hover {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    box-shadow: 0 6px 24px rgba(0, 122, 255, 0.4);
    transform: translateY(-2px);
}

button.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

/* Secondary button variant */
button.btn-secondary {
    background: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

button.btn-secondary:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

button.btn-secondary:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Small button variant */
button.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 12px;
}

/* Large button variant */
button.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 16px;
}

/* Disabled state */
button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

button:disabled:hover {
    background: var(--color-surface);
    border-color: var(--color-border);
    transform: none;
}

/* Footer */
.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 0.5px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-2xl);
    display: flex;
    justify-content: center;
    z-index: 99;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.footer-buttons {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.footer button {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 16px;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-smooth);
    min-width: 120px;
}

.footer button:hover {
    background: var(--color-primary-hover, #0056cc);
    border-color: var(--color-primary-hover, #0056cc);
    box-shadow: 0 6px 24px rgba(0, 122, 255, 0.4);
    transform: translateY(-2px);
}

.footer button:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
}

/* Add bottom padding to main content to account for fixed footer */
#content > div:last-child {
    padding-bottom: 100px;
}

/* Activities Simple Component */
.activities-simple {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 0.5px solid var(--color-border);
    overflow: hidden;
}

.activities-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-bottom: 0.5px solid var(--color-border);
    background: var(--color-surface-secondary);
}

.activities-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text);
}

.total-time {
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.activities-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.activities-table th {
    background: var(--color-surface-tertiary);
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-bottom: 0.5px solid var(--color-border);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.activities-table td {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 0.5px solid var(--color-border-light);
    vertical-align: middle;
}

.activity-row:hover {
    background: var(--color-surface-secondary);
}

.activity-row.clickable {
    cursor: pointer;
    transition: var(--transition-fast);
}

.activity-row.clickable:hover {
    background: var(--color-primary-light);
}

.activity-row.editing {
    background: var(--color-primary-light);
}

.activity-row.empty {
    text-align: center;
}

.activity-input,
.time-input,
.frequency-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 14px;
    transition: var(--transition-fast);
    background: var(--color-surface);
}

.activity-input:focus,
.time-input:focus,
.frequency-select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-focus);
}

.time-input {
    width: 60px;
    text-align: center;
}

.frequency-select {
    min-width: 120px;
}

.btn-add {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-add:hover {
    background: var(--color-primary);
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-delete,
.btn-cancel {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: 16px;
    transition: var(--transition-fast);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-delete:hover,
.btn-cancel:hover {
    background: #ff3b30;
    color: white;
}