/* ==========================================================================
   AuraStudy Design System & Theme Stylesheet
   ========================================================================== */

/* --- Custom Variables & Theme Tokens --- */
:root {
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Colors */
    --bg-darker: #060913;
    --bg-dark: #090f1d;
    --bg-card: rgba(15, 23, 42, 0.45);
    --bg-card-hover: rgba(23, 37, 66, 0.55);
    
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-glow: rgba(99, 102, 241, 0.4);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #6366f1; /* Indigo */
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    --color-secondary: #06b6d4; /* Cyan */
    --color-secondary-glow: rgba(6, 182, 212, 0.15);
    
    --color-success: #10b981; /* Emerald */
    --color-success-glow: rgba(16, 185, 129, 0.15);
    --color-warning: #f59e0b; /* Amber */
    --color-warning-glow: rgba(245, 158, 11, 0.15);
    --color-danger: #ef4444; /* Rose */
    --color-danger-glow: rgba(239, 68, 68, 0.15);
    
    --color-high: #ff4757;
    --color-medium: #ffa502;
    --color-low: #2ed573;
    
    /* Layout & Utilities */
    --sidebar-width: 260px;
    --border-radius-lg: 20px;
    --border-radius-md: 12px;
    --border-radius-sm: 8px;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --glow-shadow-indigo: 0 0 20px 2px rgba(99, 102, 241, 0.25);
    --glow-shadow-cyan: 0 0 20px 2px rgba(6, 182, 212, 0.25);
}

/* --- Core Resets --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-darker);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

/* --- Glow Background Blobs --- */
.glow-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.15;
    mix-blend-mode: screen;
    animation: blob-float 20s infinite alternate;
}

.blob-1 {
    top: -10%;
    left: 10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--color-primary) 0%, transparent 80%);
}

.blob-2 {
    bottom: -10%;
    right: 15%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-secondary) 0%, transparent 80%);
    animation-delay: -5s;
}

.blob-3 {
    top: 30%;
    right: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #ec4899 0%, transparent 80%);
    animation-delay: -10s;
}

@keyframes blob-float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 80px) scale(1.15); }
}

/* --- Layout Container --- */
.app-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
}

/* --- Premium Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background-color: rgba(10, 15, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    left: 0;
    top: 0;
    z-index: 100;
    transition: var(--transition-normal);
}

.sidebar-header {
    margin-bottom: 2.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--glow-shadow-indigo);
}

.brand-icon svg {
    width: 22px;
    height: 22px;
}

.brand-name {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #ffffff, #94a3b8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    margin-bottom: 2rem;
}

.avatar-container {
    position: relative;
}

.avatar {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.status-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 10px;
    height: 10px;
    background-color: var(--color-success);
    border-radius: 50%;
    border: 2px solid #090f1d;
}

.user-info h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
}

.user-info p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Nav Menu Links */
.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    flex-grow: 1;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.85rem 1rem;
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
    border: 1px solid transparent;
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.nav-link.active {
    color: var(--text-primary);
    background: var(--color-primary-glow);
    border-color: rgba(99, 102, 241, 0.2);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    top: 25%;
    height: 50%;
    width: 4px;
    background: var(--color-primary);
    border-radius: 0 4px 4px 0;
}

.nav-icon svg {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
}

.badge {
    position: absolute;
    right: 12px;
    padding: 2px 6px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
}

.badge-pending {
    background: var(--color-warning-glow);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-primary {
    background: var(--color-primary-glow);
    color: var(--color-primary);
    border: 1px solid rgba(99, 102, 241, 0.25);
}

.sidebar-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* --- Mobile Bottom Nav Bar (hidden by default) --- */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100vw;
    background: rgba(10, 15, 30, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    z-index: 1000;
    justify-content: space-around;
    align-items: center;
}

.mobile-nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.mobile-nav-link svg {
    width: 20px;
    height: 20px;
}

.mobile-nav-link.active {
    color: var(--color-primary);
}

/* --- Main Panel Layout --- */
.main-panel {
    margin-left: var(--sidebar-width);
    flex-grow: 1;
    padding: 2.5rem 3rem;
    min-height: 100vh;
    padding-bottom: 5rem; /* Space for scroll buffer */
    transition: var(--transition-normal);
}

/* Header bar */
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.header-title-wrapper h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.75px;
    background: linear-gradient(135deg, #ffffff 0%, #cbd5e1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.current-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

/* --- Glassmorphic Cards --- */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--glass-shadow);
    transition: var(--transition-normal);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-glow);
}

.card.clickable {
    cursor: pointer;
}

.card.clickable:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4), 0 0 15px rgba(99, 102, 241, 0.1);
}

/* Panel Layout Cards */
.panel-card {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.panel-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.panel-header p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.panel-body {
    flex-grow: 1;
}

/* --- Welcome Banner Card --- */
.welcome-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%), var(--bg-card);
    border: 1px solid rgba(99, 102, 241, 0.3);
    margin-bottom: 2rem;
}

.welcome-text h2 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.welcome-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 600px;
}

.welcome-illustration {
    font-size: 4rem;
    animation: wave-hand 2.5s infinite ease-in-out;
}

@keyframes wave-hand {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(15deg) scale(1.1); }
}

/* --- Dashboard Views Switching --- */
.view-section {
    display: none;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.view-section.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* --- Metrics Grid --- */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.metric-card {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-icon svg {
    width: 24px;
    height: 24px;
}

.subjects-icon {
    background: var(--color-primary-glow);
    color: var(--color-primary);
}

.assignments-icon {
    background: var(--color-warning-glow);
    color: var(--color-warning);
}

.attendance-icon {
    background: var(--color-success-glow);
    color: var(--color-success);
}

.exams-icon {
    background: var(--color-danger-glow);
    color: var(--color-danger);
}

.metric-details {
    display: flex;
    flex-direction: column;
}

.metric-title {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 1.75rem;
    font-weight: 800;
    margin-top: 0.1rem;
}

/* --- Dashboard Split Panel --- */
.dashboard-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* SVG Circular Progress Ring */
.circular-progress-wrapper {
    position: relative;
    width: 160px;
    height: 160px;
}

.circular-progress-svg {
    transform: rotate(-90deg);
}

.circular-progress-svg circle {
    fill: none;
    stroke-width: 8;
}

.circular-progress-svg .bg-circle {
    stroke: rgba(255, 255, 255, 0.05);
}

.circular-progress-svg .fg-circle {
    stroke: url(#indigo-gradient);
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease-in-out;
}

/* Fallback stroke colors directly via classes when grads fail */
#dashboard-attendance-ring {
    stroke: var(--color-primary);
}

.circular-progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.circular-progress-text span {
    font-size: 2rem;
    font-weight: 800;
}

.circular-progress-text .subtext {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.attendance-verdict {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    background: rgba(255, 255, 255, 0.02);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    width: 100%;
}

.attendance-verdict strong {
    color: var(--text-primary);
}

/* Progress bar utilities */
.progress-bar-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: 4px;
    transition: width 0.6s ease;
}

/* Dashboard dynamic task checklist styling */
.dashboard-task-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dashboard-task-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
}

.dashboard-task-item.completed {
    opacity: 0.6;
}

.dashboard-task-item.completed span {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.task-dot.high { background: var(--color-high); }
.task-dot.medium { background: var(--color-medium); }
.task-dot.low { background: var(--color-low); }

/* Urgent Assignments List */
.dashboard-assignment-list, .dashboard-notes-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.dash-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
}

.dash-list-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.15);
}

.dash-item-info h5 {
    font-size: 0.9rem;
    font-weight: 600;
}

.dash-item-info p {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.dash-item-meta {
    text-align: right;
}

.countdown-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 20px;
    font-weight: 600;
}

.countdown-danger {
    background: var(--color-danger-glow);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.countdown-warning {
    background: var(--color-warning-glow);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

/* Empty states */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    width: 100%;
}

/* --- Controls Row (Filter, Search, Add btns) --- */
.controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex-grow: 1;
    max-width: 380px;
}

.search-box input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background: rgba(10, 15, 30, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
    background: rgba(10, 15, 30, 0.85);
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
}

.search-icon svg {
    width: 16px;
    height: 16px;
}

/* Filters Group buttons */
.filters-group {
    display: flex;
    background: rgba(10, 15, 30, 0.4);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: var(--border-radius-md);
    gap: 4px;
}

.filter-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover {
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--color-primary);
    color: white;
}

/* --- Dynamic Items Layout Grid (Assignments, Subjects, Notes) --- */
.items-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

/* --- Assignment Card Custom Elements --- */
.assignment-card {
    position: relative;
    border-top: 4px solid var(--color-primary);
}

.assignment-card.priority-high { border-top-color: var(--color-high); }
.assignment-card.priority-medium { border-top-color: var(--color-medium); }
.assignment-card.priority-low { border-top-color: var(--color-low); }

.assignment-card.completed-status {
    opacity: 0.7;
    border-top-color: var(--color-success);
}

.card-header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.subject-tag {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--color-primary);
    background: var(--color-primary-glow);
    padding: 2px 8px;
    border-radius: 12px;
}

.priority-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.priority-badge.high { background: rgba(255, 71, 87, 0.15); color: var(--color-high); }
.priority-badge.medium { background: rgba(255, 165, 2, 0.15); color: var(--color-medium); }
.priority-badge.low { background: rgba(46, 213, 115, 0.15); color: var(--color-low); }

.card-body-section h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.assignment-card.completed-status .card-body-section h4 {
    text-decoration: line-through;
    color: var(--text-muted);
}

.card-meta-row {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.deadline-text {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.deadline-text svg {
    width: 14px;
    height: 14px;
}

.card-actions-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

/* Switch styling for complete status toggles */
.switch-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.switch-checkbox {
    display: none;
}

.switch-slider {
    width: 36px;
    height: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    position: relative;
    transition: var(--transition-fast);
}

.switch-slider::before {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--text-secondary);
    left: 2px;
    top: 2px;
    transition: var(--transition-fast);
}

.switch-checkbox:checked + .switch-slider {
    background: var(--color-success);
}

.switch-checkbox:checked + .switch-slider::before {
    transform: translateX(16px);
    background: white;
}

.btn-card-action {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.btn-card-action:hover {
    color: var(--color-high);
    background: rgba(255, 71, 87, 0.1);
}

.btn-edit-action:hover {
    color: var(--color-secondary);
    background: rgba(6, 182, 212, 0.1);
}

/* --- Attendance View Banner & Cards --- */
.overall-attendance-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1) 0%, rgba(16, 185, 129, 0.1) 100%), var(--bg-card);
    border-left: 5px solid var(--color-success);
}

.banner-metric {
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.banner-metric .percentage {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1;
}

.status-badge {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

.status-good { background: var(--color-success-glow); color: var(--color-success); border: 1px solid rgba(16, 185, 129, 0.2); }
.status-warning { background: var(--color-warning-glow); color: var(--color-warning); border: 1px solid rgba(245, 158, 11, 0.2); }
.status-danger { background: var(--color-danger-glow); color: var(--color-danger); border: 1px solid rgba(239, 68, 68, 0.2); }

.attendance-card {
    display: flex;
    flex-direction: column;
}

.attendance-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

.attendance-card-header h4 {
    font-size: 1.15rem;
    font-weight: 700;
}

.attendance-count-box {
    display: flex;
    align-items: baseline;
    gap: 4px;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0.5rem 0 1rem 0;
}

.attendance-count-box .denominator {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.attendance-percent-badge {
    font-size: 1.1rem;
    font-weight: 800;
}

.attendance-percent-badge.good { color: var(--color-success); }
.attendance-percent-badge.warning { color: var(--color-warning); }
.attendance-percent-badge.danger { color: var(--color-danger); }

/* Quick log buttons in attendance */
.attendance-log-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-log {
    border: 1px solid var(--border-color);
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.btn-log.btn-attended:hover {
    background: var(--color-success-glow);
    border-color: var(--color-success);
    color: var(--color-success);
}

.btn-log.btn-missed:hover {
    background: var(--color-danger-glow);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* --- Study Planner Split Cards --- */
.planner-grid {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 1.5rem;
}

.planner-stats-card {
    height: fit-content;
}

.task-circle-container {
    display: flex;
    justify-content: center;
    padding: 1.5rem 0;
}

.progress-ring-lg {
    position: relative;
    width: 140px;
    height: 140px;
}

.progress-ring-lg svg {
    transform: rotate(-90deg);
}

.progress-ring-lg svg circle {
    fill: none;
    stroke-width: 8;
}

.progress-ring-lg .bg-circle {
    stroke: rgba(255, 255, 255, 0.05);
}

.progress-ring-lg .fg-circle {
    stroke: var(--color-secondary);
    stroke-linecap: round;
    transition: stroke-dashoffset 0.6s ease;
}

.progress-ring-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.75rem;
    font-weight: 800;
}

.planner-numbers-row {
    display: flex;
    justify-content: space-between;
    text-align: center;
}

.num-item {
    flex-grow: 1;
}

.num-item.border-side {
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.count-label {
    font-size: 0.65rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: block;
    margin-bottom: 4px;
}

.num-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
}

/* Quick add forms styling */
.quick-add-form {
    display: flex;
    gap: 0.5rem;
    background: rgba(10, 15, 30, 0.3);
    padding: 6px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
}

.quick-add-form input {
    flex-grow: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    padding: 0.5rem;
    font-family: inherit;
    font-size: 0.9rem;
}

.quick-add-form input:focus {
    outline: none;
}

.select-inline {
    background: rgba(10, 15, 30, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    padding: 0 0.5rem;
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
}

.select-inline:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* Checklist task list */
.task-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    transition: var(--transition-fast);
}

.task-item:hover {
    background: rgba(255, 255, 255, 0.04);
}

.task-item-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.checkbox-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-muted);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.task-item.completed-task .checkbox-custom {
    background: var(--color-success);
    border-color: var(--color-success);
}

.checkbox-custom svg {
    width: 12px;
    height: 12px;
    stroke: white;
    stroke-width: 3;
    display: none;
}

.task-item.completed-task .checkbox-custom svg {
    display: block;
}

.task-item-text {
    font-size: 0.9rem;
    font-weight: 500;
}

.task-item.completed-task .task-item-text {
    text-decoration: line-through;
    color: var(--text-muted);
}

.task-prio-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    display: inline-block;
}

.task-prio-dot.high { background: var(--color-high); }
.task-prio-dot.medium { background: var(--color-medium); }
.task-prio-dot.low { background: var(--color-low); }

/* --- Notes Custom Styling Grid --- */
.notes-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.note-card {
    display: flex;
    flex-direction: column;
    height: 240px;
}

.note-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.note-card-title {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.25;
}

.note-card-body {
    flex-grow: 1;
    overflow: hidden;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
    mask-image: linear-gradient(100% 80%, white, transparent);
    -webkit-mask-image: linear-gradient(to bottom, black 60%, transparent 100%);
    white-space: pre-wrap;
}

.note-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
    margin-top: auto;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* --- Modals Backdrop System --- */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(5, 7, 13, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
    opacity: 1;
    pointer-events: auto;
}

.modal {
    width: 100%;
    max-width: 480px;
    background: #0d1323;
    border: 1px solid var(--border-color-glow);
    padding: 2rem;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
}

.modal-backdrop.active .modal {
    transform: scale(1);
}

.note-modal-wide {
    max-width: 720px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h3 {
    font-size: 1.35rem;
    font-weight: 700;
}

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.btn-close:hover {
    color: var(--color-high);
}

/* Modal Inputs & Forms Layout */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input, 
.form-group select, 
.form-group textarea {
    padding: 0.75rem 1rem;
    background: rgba(10, 15, 30, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.form-group input:focus, 
.form-group select:focus, 
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.form-group-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.form-group-checkbox input {
    cursor: pointer;
    accent-color: var(--color-primary);
}

.row-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.row-split-3 {
    display: flex;
    gap: 1rem;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 2rem;
}

/* --- Inputs Inline Utilities --- */
.input-inline {
    background: rgba(10, 15, 30, 0.5);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--border-radius-sm);
    padding: 0.25rem 0.5rem;
    font-family: inherit;
    font-size: 0.85rem;
    width: 60px;
    text-align: center;
}

.input-inline:focus {
    outline: none;
    border-color: var(--color-primary);
}

/* --- Buttons Design --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #4f46e5);
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.45);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.15), transparent);
    transform: rotate(45deg);
    transition: var(--transition-normal);
    opacity: 0;
}

.btn-glow:hover::after {
    left: 120%;
    opacity: 1;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-logout {
    width: 100%;
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
    border-color: rgba(239, 68, 68, 0.15);
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--color-danger);
}

.btn-sm {
    padding: 0.4rem 0.85rem;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

/* --- Floating Toasts --- */
.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 1200;
    pointer-events: none;
}

.toast {
    background: rgba(13, 20, 35, 0.9);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1rem 1.25rem;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    color: var(--text-primary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 280px;
    max-width: 360px;
    transform: translateY(20px);
    opacity: 0;
    pointer-events: auto;
    animation: toast-fade-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toast-fade-in {
    to { transform: translateY(0); opacity: 1; }
}

.toast.toast-success { border-left: 4px solid var(--color-success); }
.toast.toast-warning { border-left: 4px solid var(--color-warning); }
.toast.toast-danger { border-left: 4px solid var(--color-danger); }
.toast.toast-info { border-left: 4px solid var(--color-primary); }

.toast-close {
    margin-left: auto;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.1rem;
}

/* General helper spacing classes */
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.flex-center-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* --- Scrollbars styling --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   Responsive Breakpoints & Media Queries
   ========================================================================== */

/* Tablet view styling rules */
@media screen and (max-width: 1024px) {
    :root {
        --sidebar-width: 220px;
    }
    .main-panel {
        padding: 2rem;
    }
    .dashboard-split {
        grid-template-columns: 1fr;
    }
    .planner-grid {
        grid-template-columns: 1fr;
    }
}

/* Mobile view styling rules */
@media screen and (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        pointer-events: none;
        width: 0;
        padding: 0;
        border: none;
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .main-panel {
        margin-left: 0;
        padding: 1.5rem 1rem;
        padding-bottom: 6rem; /* Ensure bottom nav buffer */
    }

    .main-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }

    .header-actions {
        width: 100%;
    }

    .header-actions button {
        width: 100%;
    }

    .welcome-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        padding: 1.25rem;
    }

    .welcome-illustration {
        display: none;
    }

    .items-grid {
        grid-template-columns: 1fr;
    }
    
    .row-split-3 {
        flex-direction: column;
        gap: 0;
    }
}