/* ===== CARDS ===== */
.card, .subject-card, .schedule-card, .task-card, .alert-card {
    background: white;
    padding: 1.5rem;
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.card::before, .subject-card::before, .schedule-card::before, .task-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 4px;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 14px 0 0 14px;
}

.card:hover, .subject-card:hover, .schedule-card:hover, .task-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

body.dark .card, body.dark .subject-card, body.dark .schedule-card, body.dark .task-card, body.dark .alert-card {
    background: var(--dark-card);
    border-color: var(--dark-border);
}

.card.success::before, .task-card.done::before { 
    background: linear-gradient(180deg, var(--success), #059669); 
}

.card.warning::before, .task-card.today::before { 
    background: linear-gradient(180deg, var(--warning), #d97706); 
}

.card.danger::before, .task-card.overdue::before { 
    background: linear-gradient(180deg, var(--danger), #dc2626); 
}

.subject-card.high::before { 
    background: linear-gradient(180deg, var(--danger), #dc2626); 
}

.subject-card.medium::before { 
    background: linear-gradient(180deg, var(--warning), #d97706); 
}

.subject-card.low::before { 
    background: linear-gradient(180deg, var(--success), #059669); 
}

#subjectList {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

#taskList { 
    display: grid; 
    gap: 1.2rem; 
}

.subject-card, .schedule-card, .task-card { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
}

.task-card { 
    align-items: flex-start; 
}

.task-card.done { 
    opacity: 0.7; 
}

.strike { 
    text-decoration: line-through; 
    opacity: 0.6; 
}

/* ===== FORMS ===== */
form {
    display: grid;
    gap: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 16px;
    background: white;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

body.dark form { 
    background: var(--dark-card); 
    border-color: var(--dark-border); 
}

input, select {
    padding: 0.9rem 1.2rem;
    border-radius: 10px;
    border: 2px solid var(--border);
    font-size: 0.95rem;
    background: white;
    color: var(--text);
    transition: var(--transition);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(8, 145, 178, 0.15);
}

body.dark input, body.dark select { 
    background: var(--dark-bg); 
    border-color: var(--dark-border); 
    color: #e2e8f0; 
}

/* ===== BUTTONS ===== */
button {
    padding: 0.9rem 1.5rem;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    transition: var(--transition);
}

button:hover { 
    transform: translateY(-2px); 
    box-shadow: 0 4px 12px rgba(8, 145, 178, 0.4); 
}

button.danger { 
    background: linear-gradient(135deg, var(--danger), #dc2626); 
}

button.success { 
    background: linear-gradient(135deg, var(--success), #059669); 
}

.view-btn { 
    background: white; 
    color: #64748b; 
    border: 2px solid var(--border); 
    box-shadow: none; 
}

.view-btn:hover { 
    border-color: var(--primary); 
    color: var(--primary); 
}

.view-btn.active { 
    background: linear-gradient(135deg, var(--primary), var(--secondary)); 
    color: white; 
    border: none; 
}

body.dark .view-btn { 
    background: var(--dark-card); 
    color: #cbd5e0; 
    border-color: var(--dark-border); 
}

.card-actions, .view-toggle, .task-filters { 
    display: flex; 
    gap: 0.5rem; 
    flex-wrap: wrap; 
}

.view-toggle, .task-filters { 
    margin-bottom: 1.5rem; 
}

/* ===== TEXT STYLES ===== */
.schedule-title, .day-title { 
    color: var(--text); 
    font-weight: 600; 
    margin-bottom: 1.5rem; 
}

body.dark .schedule-title, body.dark .day-title { 
    color: #e2e8f0; 
}

.day-title { 
    color: var(--primary); 
    padding-bottom: 0.5rem; 
    border-bottom: 2px solid var(--border); 
}

.task-type { 
    font-size: 0.85rem; 
    font-weight: 600; 
    color: var(--primary); 
    text-transform: uppercase; 
}

.empty-msg { 
    text-align: center; 
    color: #94a3b8; 
    padding: 3rem 2rem; 
}

/* ===== CHARTS ===== */
.bar-container { 
    width: 100%; 
    background: var(--border); 
    border-radius: 10px; 
    height: 22px; 
}

.bar { 
    height: 22px; 
    border-radius: 10px; 
    transition: width 0.8s; 
}

.bar.completed { 
    background: linear-gradient(90deg, var(--success), #059669); 
}

.bar.high { 
    background: linear-gradient(90deg, var(--danger), #dc2626); 
}

.bar.medium { 
    background: linear-gradient(90deg, var(--warning), #d97706); 
}

.bar.low { 
    background: linear-gradient(90deg, var(--primary), var(--secondary)); 
}

canvas { 
    max-width: 100%; 
    height: auto; 
}

/* ===== FOOTER ===== */
.footer {
    text-align: center;
    padding: 1.5rem 2rem;
    background: white;
    border-top: 2px solid var(--primary);
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    position: relative;
    bottom: 0;
    z-index: 2;
}

.footer p {
    color: var(--text);
    font-size: 0.875rem;
    font-weight: 600;
}

body.dark .footer {
    background: var(--dark-card);
    border-top-color: var(--primary);
}

body.dark .footer p {
    color: #94a3b8;
}