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

:root {
    /* Neon Color Palette */
    --primary-cyan: #00f5ff;
    --primary-magenta: #ff0080;
    --accent-green: #39ff14;
    --accent-purple: #bf00ff;
    --accent-orange: #ff6600;
    
    /* Background Colors */
    --bg-dark: #0a0a0a;
    --bg-light: #f8f9fa;
    --bg-card-dark: rgba(255, 255, 255, 0.05);
    --bg-card-light: rgba(255, 255, 255, 0.8);
    
    /* Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --glass-blur: 10px;
    
    /* Text Colors */
    --text-primary-dark: #ffffff;
    --text-secondary-dark: rgba(255, 255, 255, 0.7);
    --text-primary-light: #2d3748;
    --text-secondary-light: #718096;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Glass Card Effect */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    transition: all var(--transition-normal);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

/* Header */
/* .header, .header-content, .header-controls styling moved to layout.css */
/* .logo-text, .accent, .logo-subtitle styling moved to typography.css */

/* Progress Ring */
.progress-ring {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.progress-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1); /* Default, themes.css will override */
    stroke-width: 3;
}

.progress-fill {
    fill: none;
    stroke: url(#progressGradientDark); /* Default to dark, themes.css will provide light */
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 157; /* Circumference for r=25 */
    stroke-dashoffset: 157; /* Start empty */
    transition: stroke-dashoffset var(--transition-slow);
}

/* .progress-text styling moved to typography.css */

/* Theme Toggle */
.theme-toggle {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(var(--glass-blur));
}

.theme-toggle:hover {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.2);
}

.theme-icon {
    font-size: 1.25rem;
    transition: transform var(--transition-normal);
}

/* Main Content layout moved to layout.css */

/* Navigation Tabs */
/* .nav-tabs, .nav-tab layout moved to layout.css */
/* .tab-icon, .badge styling moved to typography.css */

.nav-tab { /* Remaining interaction styles */
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    /* color will be set by themes.css */
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.1); /* Default, themes.css will override */
}

.nav-tab.active {
    background: linear-gradient(45deg, var(--primary-cyan), var(--primary-magenta)); /* Default, themes.css will override */
    color: white; /* Default, themes.css will override */
}


/* Tab Content */
/* .tab-content, .tab-pane layout moved to layout.css */

@keyframes fadeIn { /* This can stay here or move to an animations.css */
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Daily Header */
/* .daily-header, .day-stats, .stat layout moved to layout.css */
/* .day-title, .day-date, .stat-value, .stat-label styling moved to typography.css */


/* Subject Card */
/* .subject-card, .subject-header, .topic-section layout moved to layout.css */
/* .subject-name, .subject-badge, .topic-title, .topic-description styling moved to typography.css */


/* Checklist */
/* .checklist-section, .checklist, .checklist-item layout moved to layout.css */
/* .checklist-title styling moved to typography.css */

.checklist-item { /* Remaining interaction/visual styles */
    background: rgba(255, 255, 255, 0.05); /* Default, themes.css will override */
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.checklist-item:hover {
    background: rgba(255, 255, 255, 0.1); /* Default, themes.css will override */
}

.checklist-item.completed {
    opacity: 0.6; /* This could also be theme-dependent */
    text-decoration: line-through;
}

.checklist-checkbox { /* Visual style of the checkbox */
    width: 24px;  /* Increased from 20px for better touch target */
    height: 24px; /* Increased from 20px for better touch target */
    border: 2px solid var(--primary-cyan); /* Default, themes.css will override */
    border-radius: 6px; /* Adjusted for new size */
    display: flex; /* For centering the checkmark if it's text/icon */
    align-items: center;
    justify-content: center;
    font-size: 0.9rem; /* For scaling the checkmark icon */
    transition: all var(--transition-fast);
}

.checklist-checkbox.checked {
    background: var(--primary-cyan); /* Default, themes.css will override */
    color: var(--bg-dark); /* Default, themes.css will override */
}

/* Buttons */
/* Base .btn layout (padding, border, radius, cursor, transition, display, gap, text-decoration) */
.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none; /* Assuming buttons are primarily background-styled */
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    display: inline-flex; /* To align icon and text */
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none; /* Remove underline from <a> if used as button */
    /* font-weight and font-size moved to typography.css */
}

/* Specific button types (.btn-primary, .btn-secondary) */
.btn-primary {
    background: linear-gradient(45deg, var(--primary-cyan), var(--primary-magenta)); /* Default, themes.css will override */
    color: white; /* Default, themes.css will override */
}

.btn-primary:hover {
    transform: translateY(-2px); /* Interaction effect */
    box-shadow: 0 8px 25px rgba(0, 245, 255, 0.3); /* Default, themes.css will override for light mode */
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1); /* Default, themes.css will override */
    border: 1px solid rgba(255, 255, 255, 0.2); /* Default, themes.css will override */
    /* color will be set by themes.css */
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2); /* Default, themes.css will override */
}

/* .btn-icon styling moved to typography.css */


/* Topic Actions */
/* .topic-actions layout moved to layout.css */


/* Responsive Design */
/* Media queries for layout adjustments are in layout.css */
/* Media queries for typography adjustments are in typography.css */
/* General component responsive adjustments can stay here or move to components.css */

@media (max-width: 768px) {
    .btn { /* If button itself needs layout change like full-width */
        justify-content: center; /* Center text/icon if it becomes full-width */
    }
}
/* Other responsive rules specific to components not moved can remain or go to components.css */