:root {
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --secondary: #A5B4FC;
    --accent: #E0E7FF;
    --background: #0A0F20;
    --surface: rgba(30, 41, 59, 0.7);
    --surface-hover: rgba(30, 41, 59, 0.9);
    --border: rgba(255, 255, 255, 0.1);
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --success: #10B981;
    --radius: 12px;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--background);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.app-header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.streak-counter {
    background: var(--surface);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    border: 1px solid var(--border);
    font-weight: 600;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Main Content Layout */
.app-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    flex: 1;
}

@media (max-width: 768px) {
    .app-content {
        grid-template-columns: 1fr;
    }
}

/* Glassmorphism Card */
.glass-card {
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

textarea {
    width: 100%;
    min-height: 120px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 1rem;
    resize: vertical;
    transition: var(--transition);
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

/* Preview Section */
.preview-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.preview-header h2, .history-header h2 {
    font-size: 1.25rem;
    color: var(--accent);
}

.template-selector select {
    background: var(--background);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
}

.preview-output {
    background: rgba(15, 23, 42, 0.6);
    border-radius: 8px;
    padding: 1rem;
    min-height: 150px;
    white-space: pre-wrap;
    font-family: monospace;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    border: 1px solid var(--border);
}

.action-buttons {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
}

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

/* History & Calendar */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.view-toggle {
    background: rgba(15, 23, 42, 0.6);
    padding: 2px;
    border-radius: 6px;
    display: flex;
}

.view-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    cursor: pointer;
    border-radius: 4px;
}

.view-btn.active {
    background: var(--surface);
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.history-view {
    min-height: 200px;
}

.history-view.hidden {
    display: none !important;
}

/* Calendar Grid */
#calendar-view {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    text-align: center;
}

.calendar-day-header {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-bottom: 0.5rem;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    cursor: default;
    position: relative;
}

.calendar-day.active {
    background: rgba(99, 102, 241, 0.2);
    color: var(--primary);
    border: 1px solid var(--primary);
    font-weight: bold;
}

.calendar-day:hover {
    background: rgba(255, 255, 255, 0.1);
}

.calendar-day.has-standup::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 4px;
    height: 4px;
    background: var(--success);
    border-radius: 50%;
}

/* Footer */
.app-footer {
    margin-top: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
}