:root {
    --color-m: #10B981;
    /* Green */
    --color-t: #3B82F6;
    /* Blue */
    --color-n: #F97316;
    /* Orange */
    --color-tn: #14B8A6;
    /* Teal */
    --color-lr: #D8B4FE;
    /* Light Purple */
    --color-descanso: #FFFFFF;
    /* White */

    --bg-dark: #0f172a;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
}

body {
    margin: 0;
    font-family: 'Outfit', 'Inter', system-ui, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    background: radial-gradient(circle at top left, #1e293b, #0f172a);
    overflow-x: hidden;
}

.screen {
    display: none;
    min-height: 100vh;
    animation: fadeIn 0.4s ease-out;
}

.screen.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Utilities */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.36);
}

.btn-primary {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: inherit;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.full-width {
    width: 100%;
}

.text-secondary {
    color: var(--text-secondary);
}

.error-msg {
    color: #f87171;
    margin-bottom: 1rem;
    min-height: 1.2em;
    font-size: 0.9em;
}

/* Login Screen */
.login-container {
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.login-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    margin-top: 0;
    background: linear-gradient(to right, #fff, #94a3b8);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-input {
    width: 100%;
    padding: 12px;
    margin-bottom: 1rem;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.2);
    color: white;
    font-size: 1rem;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.3s;
}

.login-input:focus {
    border-color: #6366f1;
}

/* Calendar Layout */
.app-container {
    width: 100%;
    max-width: 1200px;
    padding: 2rem;
    box-sizing: border-box;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1.5rem;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.header-controls {
    display: flex;
    gap: 0.5rem;
}

h2 {
    margin: 0;
    font-weight: 400;
    font-size: 1.5rem;
}

.year-select {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    font-family: inherit;
    outline: none;
}

.year-select option {
    background: var(--bg-dark);
    color: white;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.stats-value {
    color: var(--color-m);
    font-weight: 600;
    font-size: 1.1rem;
}

.year-btn {
    /* Only for Logout now */
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.year-btn:hover {
    display: flex;
    flex-direction: column;
    transition: transform 0.2s;
}

.month-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.08);
}

.month-title {
    text-align: center;
    margin-bottom: 1rem;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--text-primary);
    cursor: default;
    background: transparent;
}

.days-grid {
    display: grid;
    grid-template-columns: 2.5rem repeat(7, 1fr) 2.5rem;
    gap: 4px;
}

.day-label {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding-bottom: 8px;
    font-weight: 500;
}

.day-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.1s;
    user-select: none;
    color: #1e293b;
    font-weight: 600;
}

.day-cell.week-number {
    background: transparent;
    color: var(--color-tn);
    font-size: 0.75rem;
    font-weight: 400;
    cursor: default;
    border: 1px solid var(--glass-border);
}

.day-cell.weekly-total {
    background: transparent;
    color: #fbbf24;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: default;
    border: 1px solid var(--glass-border);
}

.day-cell.holiday {
    border: 3px solid #ef4444 !important;
}

.day-cell.empty {
    cursor: default;
    background: transparent;
}

.day-cell.default {
    background: transparent;
    color: var(--text-secondary);
    font-weight: 400;
}

.day-cell.default:hover {
    background: transparent;
}

/* Shift Classes */
.day-cell.shift-m {
    background-color: var(--color-m);
    color: white;
}

.day-cell.shift-t {
    background-color: var(--color-t);
    color: white;
}

.day-cell.shift-n {
    background-color: var(--color-n);
    color: white;
}

.day-cell.shift-tn {
    background-color: var(--color-tn);
    color: white;
}

.day-cell.shift-lr {
    background-color: var(--color-lr);
    color: #4c1d95;
}

.day-cell.shift-v {
    background-color: #dc2626;
    /* Darker Red for Vacaciones */
    color: white;
}

.day-cell.shift-dc {
    background-color: #000000;
    /* Black */
    color: white;
}

.day-cell.shift-descanso {
    background-color: var(--color-descanso);
    color: #0f172a;
}

.day-cell.shift-descanso {
    background-color: var(--color-descanso);
    color: #0f172a;
}

.legend {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1.5rem;
    padding: 1rem 2rem;
    z-index: 100;
    flex-wrap: wrap;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.legend-dot.m {
    background: var(--color-m);
}

.legend-dot.t {
    background: var(--color-t);
}

.legend-dot.n {
    background: var(--color-n);
}

.legend-dot.tn {
    background: var(--color-tn);
}

.legend-dot.lr {
    background: var(--color-lr);
}

.legend-dot.f {
    background: #ef4444;
}

.legend-dot.v {
    background: #dc2626;
    /* Darker Red for Vacaciones */
    border: none;
}

.legend-dot.dc {
    background: #000000;
}

.day-cell.third-sunday {
    border: 3px solid #EAB308 !important;
    /* Yellow Border */
}

.legend-dot.d3 {
    background: #EAB308;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .app-container {
        padding: 0.5rem;
    }

    .calendar-grid {
        grid-template-columns: 1fr;
    }

    .header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
        padding: 1rem;
    }

    .header-left {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }

    .header-controls {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
        width: 100%;
    }

    .btn-secondary {
        flex: 1 1 45%;
        /* Buttons take approx half width */
        font-size: 0.8rem;
        padding: 8px;
        /* Reduce padding */
        white-space: nowrap;
        text-overflow: ellipsis;
        overflow: hidden;
    }

    /* Make explicit breaks for certain groups if needed */
    .year-display {
        width: 100%;
        text-align: center;
        margin-bottom: 0.5rem;
        font-size: 1.5rem;
        font-weight: bold;
        display: block;
    }

    .legend {
        width: 90%;
        bottom: 1rem;
        padding: 0.75rem;
        gap: 0.5rem;
        font-size: 0.75rem;
        border-radius: 12px;
    }

    .legend-item {
        font-size: 0.75rem;
        gap: 4px;
    }

    .legend-dot {
        width: 10px;
        height: 10px;
    }
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 1;
    transition: opacity 0.3s;
}

.modal.hidden {
    display: none;
    opacity: 0;
    pointer-events: none;
}

.modal-content {
    background: var(--bg-dark);
    padding: 2rem;
    width: 90%;
    max-width: 400px;
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    border-radius: 12px;
}

.modal-content h3 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--text-primary);
}

.input-group {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.modal-input {
    flex: 1;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.05);
    color: white;
    outline: none;
}

.holidays-list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    background: rgba(0, 0, 0, 0.2);
}

.holiday-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 12px;
    border-bottom: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

.holiday-item:last-child {
    border-bottom: none;
}

.delete-btn {
    background: transparent;
    border: none;
    color: #ef4444;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0 4px;
    transition: transform 0.2s;
}

.delete-btn:hover {
    transform: scale(1.1);
}

/* Notes Feature Styles */
.modal-textarea {
    width: 100%;
    height: 120px;
    padding: 12px;
    margin-bottom: 1rem;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.05);
    color: white;
    font-family: inherit;
    font-size: 0.95rem;
    resize: vertical;
    box-sizing: border-box;
    outline: none;
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.btn-danger {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid #ef4444;
    color: #fca5a5;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
}

.day-cell {
    position: relative;
    /* For positioning the indicator */
}

/* Note Indicator (small dot in corner) */
.note-indicator {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 6px;
    height: 6px;
    background-color: #fbbf24;
    /* Amber/Yellow to stand out */
    border-radius: 50%;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
    pointer-events: none;
    /* Let clicks pass through to the cell */
}